Northern Islands Family 3D/Compute Register Reference Guide

Revision 1.0
April 26, 2011
Radeon Cayman 3D Register Reference
Guide
© 2011 Advanced Micro Devices, Inc.
Proprietary
1
Revision 1.0
April 26, 2011
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1.
VERTEX GROUPER AND TESSELLATOR REGISTERS .......................................................................................... 4
2.
PRIMITIVE ASSEMBLY REGISTERS ................................................................................................................ 36
3.
GENERAL SHADER REGISTERS ...................................................................................................................... 61
4.
SHADER INSTRUCTIONS ............................................................................................................................... 69
5.
SHADER VERTEX RESOURCE CONSTANTS................................................................................................... 128
6.
SHADER TEXTURE RESOURCE CONSTANTS ................................................................................................ 131
7.
SHADER TEXTURE SAMPLER CONSTANTS .................................................................................................. 137
8.
SHADER CONSTANT REGISTERS ................................................................................................................. 141
9.
SHADER PROGRAM SETUP REGISTERS ....................................................................................................... 145
10.
SHADER INTERPOLATOR REGISTERS ...................................................................................................... 153
11.
SHADER EXPORT REGISTERS .................................................................................................................. 160
12.
CACHE CONTROL REGISTERS ................................................................................................................. 163
13.
TEXTURE PIPE REGISTERS ...................................................................................................................... 165
14.
DEPTH BUFFER REGISTERS ..................................................................................................................... 172
15.
COLOR BUFFER REGISTERS .................................................................................................................... 190
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1. Vertex Grouper and Tessellator Registers
VGT:VGT_CACHE_INVALIDATION · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x88c4
DESCRIPTION: VGT cache invalidation
Field Name
Bits
Default
Description
CACHE_INVALIDATION
1:0
none
Indicates whether VC or TC is used for cache invalidation
POSSIBLE VALUES:
00 - VC_ONLY: VC_ONLY
01 - TC_ONLY: TC_ONLY
02 - VC_AND_TC: VC_AND_TC
VS_NO_EXTRA_BUFFER
5
0x0
if set to one then disable gs_on bit
AUTO_INVLD_EN
7:6
0x0
0 = no auto invalidates, 1 = ES auto invalidates, 2 = GS
auto invalidates, 3 = ES and GS auto invalidate
VGT:VGT_CNTL_STATUS · [R] · 32 bits · Access: 32 · GpuF0MMReg:0x88f0
DESCRIPTION: Status Bits
Field Name
Bits
Default
Description
VGT_OUT_INDX_BUSY
0
none
If set, the Output Index block within the VGT is busy
VGT_OUT_BUSY
1
none
If set, the Output block within the VGT is busy
VGT_PT_BUSY
2
none
If set, the Pass-thru block within the VGT is busy
VGT_TE_BUSY
3
none
If set, the Tessellation Engine block within the VGT is
busy
VGT_VR_BUSY
4
none
If set, the Vertex Reuse Block within the VGT is busy
VGT_PI_BUSY
5
none
VGT_INVLD_BUSY
6
none
VGT_GS_BUSY
7
none
If set, VGT GS is actively processing
VGT_HS_BUSY
8
none
If set, VGT HS block (this could be compute shader,
local shader, or hull shader) within the VGT is busy
VGT_TE11_BUSY
9
none
If set, VGT TE11 (DX11 tessellation) block is busy
VGT_BUSY
10
none
If set, VGT is busy
VGT:VGT_DMA_BASE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x287e8
DESCRIPTION: VGT DMA Base Address
Field Name
Bits
Default
Description
BASE_ADDR
31:0
none
VGT DMA Base Address
This address must be naturally aligned to a 16-bit word.
Therefore, bit 0 of this register must be 0
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VGT:VGT_DMA_BASE_HI · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x287e4
DESCRIPTION: VGT DMA Base Address : upper 8-bits of 40 bit address
Field Name
Bits
Default
Description
BASE_ADDR
7:0
none
This specfies upper 8-bits of 40-bits of DMA address
VGT:VGT_DMA_INDEX_TYPE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a7c
DESCRIPTION: VGT DMA Index Type and Mode
Field Name
Bits
Default
Description
INDEX_TYPE
1:0
none
VGT DMA Index Type
POSSIBLE VALUES:
00 - VGT_INDEX_16: VGT_INDEX_16 16-bit
index
01 - VGT_INDEX_32: VGT_INDEX_32 32-bit
index
SWAP_MODE
3:2
none
DMA Swap mode
POSSIBLE VALUES:
00 - VGT_DMA_SWAP_NONE:
VGT_DMA_SWAP_NONE No swap
01 - VGT_DMA_SWAP_16_BIT:
VGT_DMA_SWAP_16_BIT 16-bit swap
0xAABBCCDD -> 0xBBAADDCC
02 - VGT_DMA_SWAP_32_BIT:
VGT_DMA_SWAP_32_BIT 32-bit swap
0xAABBCCDD -> 0xDDCCBBAA
03 - VGT_DMA_SWAP_WORD:
VGT_DMA_SWAP_WORD word swap
0xAABBCCDD -> 0xCCDDAABB
VGT:VGT_DMA_MAX_SIZE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a78
DESCRIPTION: This is a write-only register. This register is used for handling index out of bound issue. It is
expected that driver set this register to less than or equal to VGT_DMA_SIZE, specifying how many actual good
data to be read from index buffer. If VGT_MAX_SIZE < VGT_DMA_SIZE, the reset of fetched indices are set to
zero in VGT
Field Name
Bits
Default
Description
MAX_SIZE
31:0
none
VGT DMA maximum number of indices until out of
bound index buffer is accessed
VGT:VGT_DMA_NUM_INSTANCES · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a88
DESCRIPTION: VGT DMA Number of Instances
Field Name
Bits
Default
Description
NUM_INSTANCES
31:0
none
VGT DMA Number of Instances, minimum value is 1
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VGT:VGT_DMA_SIZE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a74
DESCRIPTION: VGT DMA Size
Field Name
Bits
Default
Description
NUM_INDICES
31:0
none
VGT DMA Number of indices
VGT:VGT_DRAW_INITIATOR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x287f0
DESCRIPTION: Draw Initiator
Field Name
Bits
Default
Description
SOURCE_SELECT
1:0
none
Input Source Select.
If the Source Select field is set to `Auto-increment Index`
mode and the Primitive Type is set to `Tri List w/Flags`,
then the draw initiator is processed as just a regular `Tri
List`.
POSSIBLE VALUES:
00 - DI_SRC_SEL_DMA: VGT DMA Data
01 - DI_SRC_SEL_IMMEDIATE: Immediate Data
02 - DI_SRC_SEL_AUTO_INDEX: Auto-increment
Index
03 - DI_SRC_SEL_RESERVED: Reserved - unused
MAJOR_MODE
3:2
none
Major Mode
POSSIBLE VALUES:
00 - DI_MAJOR_MODE_0: DI_MAJOR_MODE_0
Normal (Implicit) Mode -- applies only to prim types 021. Some VGT state registers are ignored (their values
implied) in this mode.
01 - DI_MAJOR_MODE_1: DI_MAJOR_MODE_1
Explicit Mode -- Configuration completely specified by
state registers.
NOT_EOP
5
none
This bit indicates that this draw initiator should not
generate an end-of-packet signal because it will be
followed by one or more chained draw initiators. Care
must be taken so that this draw initiator is immediately
followed, at the hardware interface, by a chained draw
initiator. (In other words, chained draw initiators cannot
be separated over driver buffer boundaries that can be
interrupted. This bit is primarily intended to be set by the
CP to improve the processing parallelism of small 2D
blits.)
POSSIBLE VALUES:
00 - normal eop
01 - suppress eop
USE_OPAQUE
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none
This bit indicates that this draw call is a opaque draw call
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POSSIBLE VALUES:
00 - non-opaque draw
01 - opaque draw
VGT:VGT_ENHANCE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a50
DESCRIPTION: Used for Late Additions of Control Bits.
Field Name
Bits
Default
Description
MISC
31:0
none
Misc bit
VGT:VGT_ES_PER_GS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a58
DESCRIPTION: Maximum ES vertices per GS thread
Field Name
Bits
Default
Description
ES_PER_GS
10:0
none
Maximum number of ES vertices per GS thread
VGT:VGT_EVENT_ADDRESS_REG · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x287f8
DESCRIPTION: This register is written only if extended_event is enabled in event_initiator. It will be stored as
FIFO
Field Name
Bits
Default
Description
ADDRESS_LOW
27:0
none
address bit 31:4 for zpass event
VGT:VGT_EVENT_INITIATOR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a90
DESCRIPTION: Ring-specific: Event Inititiator
Field Name
Bits
Default
Description
EVENT_TYPE
5:0
none
Event Type (also called Event ID)
POSSIBLE VALUES:
00 - Reserved
01 - SAMPLE_STREAMOUTSTATS1: Sample
Streamout1 Statitics counters -- Inserted by the driver to
request the GPU to sample counters associated with
streamout. The CP will subsequently write them to
memory.
02 - SAMPLE_STREAMOUTSTATS2: Sample
Streamout2 Statitics counters -- Inserted by the driver to
request the GPU to sample counters associated with
streamout. The CP will subsequently write them to
memory.
03 - SAMPLE_STREAMOUTSTATS3: Sample
Streamout3 Statitics counters -- Inserted by the driver to
request the GPU to sample counters associated with
streamout. The CP will subsequently write them to
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memory.
04 - CACHE_FLUSH_TS: Destination Cache Flush
with Timestamp -- Inserted by the driver to cause the
CBs, DBs, and SX to flush all prior rendering in any
destination cache, wait for write confirm, then signal the
CP.
05 - CONTEXT_DONE: GFXDEC Context Done -Inserted by the CP on the first GFXDEC state update
after a draw. The 8 contexts are now shared with
compute shaders and therefore, the done applies to the
most recent state used for GFX, as opposed to being used
for CS (compute shaders).
06 - CACHE_FLUSH: Destination Caches Flushed -Inserted by the driver to cause the CBs, DBs, and SX to
flush all prior rendering in any destination cache to
memory (No Timestamp is Generated).
07 - CS_PARTIAL_FLUSH: Used to flush Compute
Shader work after the CP in the VGT, SPI, SQ such that
all previous CS work launched prior to this event will
complete execution in the shader core and free all shader
resources.
08 - VGT_STREAMOUT_SYNC: Generated and
consumed by the VGT for use when syncing shader
engines. The driver should not insert this event.
09 - Reserved_0x09: Reserved -- was used for
SC_WAIT_WC
10 - Reserved
11 - Reserved
12 - Reserved
13 - RST_PIX_CNT: Reset SPI`s auto Pixel Counter
-- Inserted by the driver.
14 - Reserved
15 - VS_PARTIAL_FLUSH: Used to flush all work
between the CP and the ES, GS, VS shaders including
the VGT.
16 - PS_PARTIAL_FLUSH: Used to flush all work
between the CP and the ES, GS, VS, PS shaders
including scan conversion, primitive assembly, and
VGT.
17 - FLUSH_HS_OUTPUT: Flush Hull Shader
Output -- Sent by the VGT after an HS threadgroup.
Used to make sure all HS threadgroup data is processed
before the corresponding DS threadgroup begins.
18 - FLUSH_LS_OUTPUT: Flush Local Shader
Output -- Sent by the VGT after an LS threadgroup.
Used to make sure all LS threadgroup data is processed
before the corresponding HS threadgroup begins.
19 - Reserved
20 - CACHE_FLUSH_AND_INV_TS_EVENT:
Destination Cache Flush and Invalidate with Timestamp
-- Inserted by the driver to cause the CBs, DBs, and SX
to flush and invalidate all prior rendering in any
destination cache, wait for write confirm, then signal the
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CP.
21 - ZPASS_DONE: Write ZPASS counts to
memory -- Inserted by the driver to instruct the DBs to
write out the ZPASS counters to memory. Used to
support DX10 occlusion queries.
22 - CACHE_FLUSH_AND_INV_EVENT:
Destination Cache Flush and Invalidate -- Inserted by the
driver to cause the CBs, DBs, and SX to flush and
invalidated all prior rendering in any destination cache to
memory (No Timestamp is Generated).
23 - PERFCOUNTER_START: Start enabled event
based Performance counters -- Inserted by the driver.
24 - PERFCOUNTER_STOP: Stop enabled event
based Performance counters that are event-enabled -Inserted by the driver.
25 - PIPELINESTAT_START: Start
pipeline/strmout stat -- Inserted by the driver.
26 - PIPELINESTAT_STOP: Stop pipeline/strmout
stat -- Inserted by the driver.
27 - PERFCOUNTER_SAMPLE: Sample the
performance counters of all blocks -- Inserted by the
driver to read the performance counters.
28 - FLUSH_ES_OUTPUT: Flush Export Shader
Output -- Inserted by the VGT to instruct the SX to flush
all the ES output to memory.
29 - FLUSH_GS_OUTPUT: Flush Geometry Shader
Output -- Inserted by the VGT to instruct the SX to flush
all the GS output to memory.
30 - SAMPLE_PIPELINESTAT: Sample Pipeline
Statistics counters -- Inserted by the driver to request the
GPU to sample counters associated with pipelinestats.
The CP will subsequently write them to memory.
31 - SO_VGTSTREAMOUT_FLUSH: VGT
Streamout Flush -- This event will cause VGT to update
the read only offsets registers and then send a
VGT_CP_strmout_flushed to instruct the CP to read the
offsets.
32 - SAMPLE_STREAMOUTSTATS: Sample
Streamout0 Statitics counters -- Inserted by the driver to
request the GPU to sample counters associated with
streamout. The CP will subsequently write them to
memory.
33 - RESET_VTX_CNT: Reset Vertex Count -Inserted by the driver to reset the auto index count for
vertex count. There are tow counters one for gs and nongs and these should be reset seperately
34 - BLOCK_CONTEXT_DONE: Block Managed
State (SQCONSDEC) Context Done -- Inserted by the
CP on the first SQCONSDEC constant update after a
draw.
35 - CS_CONTEXT_DONE: GFXDEC Context
Done for CS (compute shaders) -- Converted to
CONTEXT_DONE event by the VGT before it sends it
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as an event down the pipe. Therefore, for R8xx, only the
CP and VGT must be aware of this event. Inserted by the
CP on the first GFXDEC state update for CS after a draw
that is being used to run compute shaders. This applies to
the same 8 context states as the CONTEXT_DONE
event, except that it applies to the most recent context
that is being used for running compute shaders
36 - VGT_FLUSH: VGT Flush - Inserted by the
driver to cause the VGT to be flushed. Used when GS
ring buffer sizes are changed
37 - Reserved
38 - SQ_NON_EVENT: SQ Non-Event -- This event
is reserved for SQ
39 - SC_SEND_DB_VPZ: SC Send Depth Block
VPort Z -- Inserted by the SC when it sends the vport
array Zmin and Zmax values to the DBs.
40 - BOTTOM_OF_PIPE_TS: Bottom of the Pipe
Timestamp -- Inserted by the driver to request a bottom
of pipe timestamp be sent to memory, no flushing
required.
41 - FLUSH_SX_TS: Flush SX Timestamp - Inserted
by the driver to cause the SX to flush its caches, then
signal the CP. The other destination caches must also
signal the CP for this event. All responses to the CP must
be in the order the TS were received, regardless if the
cache is required to otherwise act upon it.
42 - DB_CACHE_FLUSH_AND_INV: DB Flush
and Invalidate - Inserted by the driver when the depth
surface is paged out of memory.
43 - FLUSH_AND_INV_DB_DATA_TS: Flush and
Invalidate DB`s Data Cache Only - Inserted by the driver
to cause the DB to flush and invalidate only its data
cache, wait for write confirm, then signal the CP. The
other destination caches must also signal the CP for this
event. All responses to the CP must be in the order the
TS were received, regardless if the cache is required to
otherwise act upon it.
44 - FLUSH_AND_INV_DB_META: Flush and
Invalidate DB`s Meta (htile) Only - Inserted by the driver
to cause the DB to flush and invalidate only its Meta
cache.
45 - FLUSH_AND_INV_CB_DATA_TS: Flush and
Invalidate CB`s Data Cache Only - Inserted by the driver
to cause the CB to flush and invalidate only its data
cache, wait for write confirm, then signal the CP. The
other destination caches must also signal the CP for this
event. All responses to the CP must be in the order the
TS were received, regardless if the cache is required to
otherwise act upon it.
46 - FLUSH_AND_INV_CB_META: Flush and
Invalidate CB`s Meta (cmask/fmask) Only - Inserted by
the driver to cause the CB to flush and invalidate only its
Meta cache.
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47 - CS_DONE: Inserted by the driver using an
EVENT_WRITE_EOS packet. The SQ, in response, will
generate a signal to indicate that all CS work prior to this
point has completed.
48 - PS_DONE: Inserted by the driver using an
EVENT_WRITE_EOS packet. The SQ, in response, will
generate a signal to indicate that all PS work prior to this
point has completed.
49 - FLUSH_AND_INV_CB_PIXEL_DATA: Flush
and invalidate CB`s pixel (render target) data in color
cache. Does not guarantee UAV(RAT) flush-and-inv,
and does not flush the cmask/fmask cache either.
Typically would be inserted by the driver before
resolving or expanding an MSAA buffer. No wait-idle is
necessary between this flush and the subsequent
resolve/expand draw command.
50 - SX_CB_RAT_ACK_REQUEST: HW generated
event by the SX to signify an ack request to the CB.
ADDRESS_HI
26:18
none
address bits 39:31 for zpass event
EXTENDED_EVENT
27
none
0 for single DW event, 1 for two DW event
VGT:VGT_GROUP_DECR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a2c
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register contains the amount by which the draw initiator index count is decremented for all groups taken from the
input stream except for the first group.
Field Name
Bits
Default
Description
DECR
3:0
none
Decrement amount for groups except the first
VGT:VGT_GROUP_FIRST_DECR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a28
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register contains the amount by which the draw initiator index count is decremented for the first group taken from
the input stream.
Field Name
Bits
Default
Description
FIRST_DECR
3:0
none
Decrement amount for the first group
VGT:VGT_GROUP_PRIM_TYPE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a24
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register contains the prim type output by the grouper stage of the VGT
Please note the following restrictions in the use of this register
1.1. The PRIM_ORDER settings of VGT_GRP_FAN, VGT_GRP_LOOP, and VGT_GRP_POLYGON are not
permitted if the VGT_OUTPUT_PATH_CNTL register is set to VGT_OUTPATH_PASSTHRU. Implementing these
primitive orders correctly would require the VGT Passthru Block to have storage for the worst-case compoundindex.
2.2. If the VGT_OUTPUT_PATH_CNTL register is set to VGT_OUTPATH_PASSTHRU, then the PRIM_TYPE
setting of VGT_GRP_3D_QUAD (with a PRIM_ORDER of either VGT_GRP_LIST or VGT_GRP_STRIP) will not
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necessarily have the correct order for flat shading for either Direct3D or OpenGL. (This restriction does NOT apply
to quads that are processed through the Vertex Reuse Block.)
3.3. If the VGT_OUTPUT_PATH_CNTL register is set to VGT_OUTPATH_PASSTHRU and the PRIM_TYPE field
of the VGT_GROUP_PRIM_TYPE register is set to VGT_GRP_3D_QUAD, then each quad primitive will be
decomposed into two triangles regardless of the setting of the RETAIN_QUADS field in the
VGT_GROUP_PRIM_TYPE register.
Field Name
Bits
Default
Description
PRIM_TYPE
4:0
none
Prim type output by grouper stage of the VGT.
POSSIBLE VALUES:
00 - VGT_GRP_3D_POINT:
VGT_GRP_3D_POINT
01 - VGT_GRP_3D_LINE: VGT_GRP_3D_LINE
02 - VGT_GRP_3D_TRI: VGT_GRP_3D_TRI
03 - VGT_GRP_3D_RECT: VGT_GRP_3D_RECT
04 - VGT_GRP_3D_QUAD:
VGT_GRP_3D_QUAD
05 - VGT_GRP_2D_COPY_RECT_V0:
VGT_GRP_2D_COPY_RECT_V0
06 - VGT_GRP_2D_COPY_RECT_V1:
VGT_GRP_2D_COPY_RECT_V1
07 - VGT_GRP_2D_COPY_RECT_V2:
VGT_GRP_2D_COPY_RECT_V2
08 - VGT_GRP_2D_COPY_RECT_V3:
VGT_GRP_2D_COPY_RECT_V3
09 - VGT_GRP_2D_FILL_RECT:
VGT_GRP_2D_FILL_RECT
10 - VGT_GRP_2D_LINE: VGT_GRP_2D_LINE
11 - VGT_GRP_2D_TRI: VGT_GRP_2D_TRI
12 - VGT_GRP_PRIM_INDEX_LINE:
VGT_GRP_PRIM_INDEX_LINE
13 - VGT_GRP_PRIM_INDEX_TRI:
VGT_GRP_PRIM_INDEX_TRI
14 - VGT_GRP_PRIM_INDEX_QUAD:
VGT_GRP_PRIM_INDEX_QUAD
15 - VGT_GRP_3D_LINE_ADJ:
VGT_GRP_3D_LINE_ADJ
16 - VGT_GRP_3D_TRI_ADJ:
VGT_GRP_3D_TRI_ADJ
17 - VGT_GRP_3D_PATCH:
VGT_GRP_3D_PATCH
RETAIN_ORDER
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14
none
Resetting this bit to zero causes the Grouper within the
VGT to convert strips, fans, loops, and polygons into
regular lists in the vgt_grouper block. It also causes the
primitive indices to be re-ordered to have the provoking
vertex in the correct position. This bit should be set to
zero if the VGT_OUTPUT_PATH_CNTL register
specifies VGT_OUTPATH_VTX_REUSE or
VGT_OUTPATH_TESS_EN and the
VGT_DRAW_INITIATOR prim type is between 0 and
15, inclusive, (tri list, tri strip, tri fan, etc...). This bit is
implied to be zero for VGT_DRAW_INITIATOR prim
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types 0 thru 15 if the Major Mode of the
VGT_DRAW_INIITIATOR is 0. If this bit is set for
prim types 0 thru 15, then the primitive index order from
the grouper will be retained and the indices will be
incorrect for loops, fans, and polygons. Note that if the
VGT_DRAW_INITIATOR.MAJOR_MODE is set to
MAJOR_MODE_1 and VGT_OUTPUT_PATH_CNTL
is set to VGT_OUTPATH_PASSTHRU and the
VGT_GROUP_PRIM_TYPE.PRIM_TYPE is set to
VGT_GRP_3D_TRI or VGT_GRP_2D_TRI and
VGT_GROUP_PRIM_TYPE.PRIM_ORDER is set to
VGT_GRP_STRIP, then the passthru block will perform
DX/OpenGL index re-ordering for tri-strips.
POSSIBLE VALUES:
00 - Reorder strip/fan/loop/polygon into lists with
correct provoking vertex
01 - Retain primitive index order as they appear in
the input stream
RETAIN_QUADS
15
none
This bit can only be legally set if the
VGT_OUTPUT_PATH_CNTL register specifies the
Tessellation Engine and the Major Mode of the
VGT_DRAW_INITATOR is 1. The RETAIN_QUADS
bit indicates that quads should be passed intact to the
tessellation engine. If this bit is not set, then the quads
will be decomposed into triangles.
POSSIBLE VALUES:
00 - Decompose quads into triangles
01 - Retain quads (legal only for tessellation engine)
PRIM_ORDER
18:16
none
Prim order output by grouper stage of the VGT.
POSSIBLE VALUES:
00 - VGT_GRP_LIST: VGT_GRP_LIST
01 - VGT_GRP_STRIP: VGT_GRP_STRIP
02 - VGT_GRP_FAN: VGT_GRP_FAN
03 - VGT_GRP_LOOP: VGT_GRP_LOOP
04 - VGT_GRP_POLYGON:
VGT_GRP_POLYGON
VGT:VGT_GROUP_VECT_0_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a30
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register indicates, with bits flags, which components are relevant for vector 0 of a group. At least one component of
vector 0 must be indicated. This register also contains the stride of vector 0 (in 16-bit words) in the input stream and
the amount to shift the input stream (in 16-bit words) after extracting the vector.
Field Name
Bits
Default
Description
COMP_X_EN
0
none
Indicates that component X will be output from the
grouper for vector 0
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POSSIBLE VALUES:
00 - disable
01 - enable
COMP_Y_EN
1
none
Indicates that component Y will be output from the
grouper for vector 0
POSSIBLE VALUES:
00 - disable
01 - enable
COMP_Z_EN
2
none
Indicates that component Z will be output from the
grouper for vector 0
POSSIBLE VALUES:
00 - disable
01 - enable
COMP_W_EN
3
none
Indicates that component W will be output from the
grouper for vector 0
POSSIBLE VALUES:
00 - disable
01 - enable
STRIDE
15:8
none
The stride of vector 0 data in the input stream (in 16-bit
words). Zero is NOT a legal value for an active vector.
See the programming guidelines for the situation in
which a vector uses no data from the shifter.
SHIFT
23:16
none
The amount to shift the input stream after extracting
vector 0 (in 16-bit words). This field must be less than or
equal to the STRIDE field for proper shifter operation.
VGT:VGT_GROUP_VECT_0_FMT_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a38
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register indicates how the value each component of vector 0 will be determined. If the
VGT_GROUP_VECT_0_CNTL register indicates that a particular component is not selected for output from the
grouper, then that component`s format control fields are ignored.
Field Name
Bits
Default
Description
X_CONV
3:0
none
X Component Determination.
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
© 2011 Advanced Micro Devices, Inc.
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bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
X_OFFSET
7:4
none
X Component Offset. This field is the offset, in 16-bit
words, of the X component in the input cycle.
Y_CONV
11:8
none
Y Component Determination. See the X component
determination field for description.
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
Y_OFFSET
15:12
none
Y Component Offset. This field is the offset, in 16-bit
words, of the Y component in the input cycle.
Z_CONV
19:16
none
Z Component Determination. See the X component
determination field for description.
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
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VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
Z_OFFSET
23:20
none
Z Component Offset. This field is the offset, in 16-bit
words, of the Z component in the input cycle.
W_CONV
27:24
none
W Component Determination. See the X component
determination field for description.
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
W_OFFSET
31:28
none
W Component Offset. This field is the offset, in 16-bit
words, of the Z component in the input cycle.
VGT:VGT_GROUP_VECT_1_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a34
© 2011 Advanced Micro Devices, Inc.
Proprietary
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Revision 1.0
April 26, 2011
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register is identical to VGT_GROUP_VECT_0_CNTL except that it applies to vector 1 of the group instead of
vector 0. Also, vector 0 is required to have at least one component set; however, vector 1 may have none set.
Field Name
Bits
Default
Description
COMP_X_EN
0
none
POSSIBLE VALUES:
00 - disable
01 - enable
COMP_Y_EN
1
none
POSSIBLE VALUES:
00 - disable
01 - enable
COMP_Z_EN
2
none
POSSIBLE VALUES:
00 - disable
01 - enable
COMP_W_EN
3
none
POSSIBLE VALUES:
00 - disable
01 - enable
STRIDE
15:8
none
SHIFT
23:16
none
VGT:VGT_GROUP_VECT_1_FMT_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a3c
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register is identical to VGT_GROUP_VECT_0_FMT_CNTL except that it controls the formatting of output vector 1
instead of output vector 0.
Field Name
Bits
Default
Description
X_CONV
3:0
none
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
X_OFFSET
7:4
none
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Y_CONV
11:8
none
Y_OFFSET
15:12
none
Z_CONV
19:16
none
Z_OFFSET
23:20
none
W_CONV
27:24
none
© 2011 Advanced Micro Devices, Inc.
Proprietary
April 26, 2011
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
POSSIBLE VALUES:
00 - VGT_GRP_INDEX_16:
VGT_GRP_INDEX_16 16 bits from stream with index
offset and clamp
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01 - VGT_GRP_INDEX_32:
VGT_GRP_INDEX_32 32 bits from stream with index
offset and clamp
02 - VGT_GRP_UINT_16: VGT_GRP_UINT_16 16
bits from stream as unsigned int
03 - VGT_GRP_UINT_32: VGT_GRP_UINT_32 32
bits from stream as unsigned int
04 - VGT_GRP_SINT_16: VGT_GRP_SINT_16 16
bits from stream as signed int
05 - VGT_GRP_SINT_32: VGT_GRP_SINT_32 32
bits from stream as signed int
06 - VGT_GRP_FLOAT_32:
VGT_GRP_FLOAT_32 32 bits from stream as float
07 - VGT_GRP_AUTO_PRIM:
VGT_GRP_AUTO_PRIM 24 bits from auto primitive
counter
08 - VGT_GRP_FIX_1_23_TO_FLOAT:
VGT_GRP_FIX_1_23_TO_FLOAT 24 bit barycentric
value from tessellation engine
W_OFFSET
31:28
none
VGT:VGT_GS_INSTANCE_CNT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b90
DESCRIPTION: Specifies the amount of GS prim instancing
Field Name
Bits
Default
Description
ENABLE
0
none
Enable GS instancing
POSSIBLE VALUES:
00 - gs_instance_disable
01 - gs_instance_enable
CNT
8:2
none
Number of GS prim instances, if set to 0 gs instancing is
treated as off, no instance id provided
VGT:VGT_GS_MAX_VERT_OUT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b38
DESCRIPTION: VGT max verts output by the GS for each prim
Field Name
Bits
Default
Description
MAX_VERT_OUT
10:0
none
The number of max verts that can be emitted from a
geometry shader instance, legal values are 1 - 1024
VGT:VGT_GS_MODE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a40
DESCRIPTION: VGT GS Enable Mode
Field Name
Bits
Default
Description
MODE
1:0
none
Lower two bits of MODE, This value combined with
MODE_HI indicates which of GS scenerios are enabled
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POSSIBLE VALUES:
00 - GS_OFF: GS_OFF
01 - GS_SCENARIO_A: GS_SCENARIO_A
02 - GS_SCENARIO_B: GS_SCENARIO_B
03 - GS_SCENARIO_G: GS_SCENARIO_G
04 - GS_SCENARIO_C: GS_SCENARIO_C
05 - SPRITE_EN: SPRITE_EN
ES_PASSTHRU
2
none
sets to one if VS shader is passthru when GS scenario G is
used
POSSIBLE VALUES:
00 - passthru_dis
01 - passthru_en
CUT_MODE
4:3
none
00: more than 512 gs emit vertices, 01: more than 256 and
less than equal to 512 emit vertices, 10:more than 128 and
less than or equal to 256 gs emit vertices, 11: less than or
equal to 128 gs emit vertices
POSSIBLE VALUES:
00 - GS_CUT_1024: GS_CUT_1024
01 - GS_CUT_512: GS_CUT_512
02 - GS_CUT_256: GS_CUT_256
03 - GS_CUT_128: GS_CUT_128
MODE_HI
8
none
Upper bit of MODE field, see description of MODE
VGT:VGT_GS_OUT_PRIM_TYPE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a6c
DESCRIPTION: VGT GS output primitive type
Field Name
Bits
Default
Description
OUTPRIM_TYPE
5:0
none
GS output primitive type
POSSIBLE VALUES:
00 - POINTLIST: POINTLIST
01 - LINESTRIP: LINESTRIP
02 - TRISTRIP: TRISTRIP
VGT:VGT_GS_PER_ES · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a54
DESCRIPTION: Maximum GS prims per ES thread
Field Name
Bits
Default
Description
GS_PER_ES
10:0
none
Maximum number of GS prims per ES thread
VGT:VGT_GS_PER_VS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a5c
DESCRIPTION: Maximum GS threads per VS thread
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
20
Revision 1.0
GS_PER_VS
3:0
none
April 26, 2011
Maximum number of GS threads per VS thread
VGT:VGT_GS_VERTEX_REUSE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x88d4
DESCRIPTION: reuseability for GS path, it has nothing to do with number of good simd
Field Name
Bits
Default
Description
VERT_REUSE
4:0
none
Reusability number for GS input prims. Can be set to
either 0, or from 4-16 in normal GS G mode of
operation, but it must be at least 4 if the tessellation
output is piped to the GS path
VGT:VGT_HOS_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a14
DESCRIPTION: This register controls the behavior of the Tessellation Engine block at the backend of the VGT.
This register is relevant only if the VGT_OUTPUT_PATH_CNTL register specifies the Tessellation Engine block for
the VGT backend path. Note that the tessellation engine is enabled by selecting the tessellation engine path in the
VGT_OUTPUT_PATH_CNTL register as opposed to the single enable bit that was used in previous architectures.
Field Name
Bits
Default
Description
TESS_MODE
1:0
none
Tessellation Mode
0 : Discrete
1 : Continuous
2 : Adaptive
VGT:VGT_HOS_MAX_TESS_LEVEL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a18
DESCRIPTION: When using the tessellator: For continuous and discrete tessellation modes, this register contains
the tessellation level. For adaptive tessellation, this register contains the maximum tessellation level. The adaptive
tessellation levels will be clamped less-than or equal to this level by the tessellation engine. In all cases, the format
of this register is 32-bit IEEE floating point. This register is relevant only when the VGT_OUT_CNTL register
specifies `Tessellation Engine` in the Path Select field.
When using the Dx11 tessellator: This register specifies a Max tessellation level clamp that the hardware will apply
to fetched Tess Factors.
Field Name
Bits
Default
Description
MAX_TESS
31:0
none
For adaptive tessellation mode, this is the maximum
tessellation clamp value.
For continuous and discrete tessellation modes, this is the
tessellation level.
For discrete modes, values in the range (1.0, 14.0) are
legal.
For non-discrete modes, values in the range (1.0, 15.0)
are legal.
MAX_TESS must be greater than or equal to
MIN_TESS.
When using the Dx11 tessellator values in the range (0.0,
64.0) are legal. If the incoming factor is a Nan, a
negative number or Zero, it is not clamped against this
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value.
VGT:VGT_HOS_MIN_TESS_LEVEL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a1c
DESCRIPTION: When using the tessellator: For continuous and discrete tessellation modes, this register is not
applicable. For adaptive tessellation, this register contains the minimum tessellation level. The adaptive tessellation
levels will be clamped greater-than or equal to this level by the tessellation engine. The format of this register is 32bit IEEE floating point. This register is relevant only when the VGT_OUT_CNTL register specifies `Tessellation
Engine` in the Path Select field and the VGT_HOS_CNTL register specifies adaptive tessellation mode.
When using the Dx11 tessellator: This register specifies a Min tessellation level clamp that the hardware will apply
to fetched Tess Factors.
Field Name
Bits
Default
Description
MIN_TESS
31:0
none
For adpative tessellation mode, this is the minimum
tessellation clamp value.
For continuous and discrete tessellartion modes, this
register is not applicable.
For discrete modes values in the range (1.0, 14.0) are
legal.
For non-discrete modes, values in the range (1.0, 15.0)
are legal.
MIN_TESS must be less than or equal to MAX_TESS.
When using the Dx11 tessellator values in the range (0.0,
64.0) are legal. If the incoming factor is a Nan, a
negative number or Zero, it is not clamped against this
value.
VGT:VGT_HOS_REUSE_DEPTH · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a20
DESCRIPTION: This register tells the tessellation how many of most recently submitted vertices it can reuse.
This register is relevant only when the VGT_OUT_CNTL register specifies `Tessellation Engine` in the Path Select
field.
Field Name
Bits
Default
Description
REUSE_DEPTH
7:0
none
Set this register to 2 more than the desired reuse depth.
Ideally this should be set to 16 and not changed
VGT:VGT_IMMED_DATA · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x287f4
DESCRIPTION: VGT Immediate Data
Field Name
Bits
Default
Description
DATA
31:0
none
Data written to this address is written into the VGT
Immediate Data FIFO.
VGT:VGT_INDEX_TYPE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x895c
DESCRIPTION: VGT Index Type
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Field Name
Bits
Default
Description
INDEX_TYPE
1:0
none
Index Type (applicable to prim types 0-28 only).
If the Source Select field is set to `Auto-increment Index`
mode, then this field is ignored and the index type is 32bits per index
POSSIBLE VALUES:
00 - DI_INDEX_SIZE_16_BIT:
DI_INDEX_SIZE_16_BIT 16 bits per index
01 - DI_INDEX_SIZE_32_BIT:
DI_INDEX_SIZE_32_BIT 32 bits per index
VGT:VGT_INDX_OFFSET · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28408
DESCRIPTION: For components that are that are specified to be indices (see the
VGT_GROUP_VECT_0_FMT_CNTL register), this register is the offset value. Offsetting occurs prior to clamping
and fix->flt conversion.
Field Name
Bits
Default
Description
INDX_OFFSET
31:0
none
Index offset value (32-bit adder), extend it to 32-bits
VGT:VGT_INSTANCE_STEP_RATE_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28aa0
DESCRIPTION: This register defines the first instance step rate
Field Name
Bits
Default
Description
STEP_RATE
31:0
none
Instance step rate
VGT:VGT_INSTANCE_STEP_RATE_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28aa4
DESCRIPTION: This register defines the second instance step rate
Field Name
Bits
Default
Description
STEP_RATE
31:0
none
Instance step rate
VGT:VGT_LAST_COPY_STATE · [R] · 32 bits · Access: 32 · GpuF0MMReg:0x88c0
DESCRIPTION: This register retains the data from the last GFX_COPY_STATE command.
Field Name
Bits
Default
Description
SRC_STATE_ID
2:0
none
Source context from last GFX_COPY_STATE
command.
DST_STATE_ID
18:16
none
Destination context from last GFX_COPY_STATE
command.
VGT:VGT_LS_HS_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b58
DESCRIPTION: Used to specify LS/HS control values
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Field Name
Bits
Default
Description
NUM_PATCHES
7:0
none
Indicates number of patches in a threadgroup
HS_NUM_INPUT_CP
13:8
none
Number of control points in HS input patch
HS_NUM_OUTPUT_CP
19:14
none
Number of control points in HS output patch
VGT:VGT_MAX_VTX_INDX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28400
DESCRIPTION: For components that are that are specified to be indices (see the
VGT_GROUP_VECT_0_FMT_CNTL register), this register is the maximum clamp value. Clamping occurs after
offsetting and prior to fix->flt conversion.
Field Name
Bits
Default
Description
MAX_INDX
31:0
none
maximum clamp value for index clamp, exten it to 32-bit
VGT:VGT_MIN_VTX_INDX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28404
DESCRIPTION: For components that are that are specified to be indices (see the
VGT_GROUP_VECT_0_FMT_CNTL register), this register is the minimum clamp value. Clamping occurs after
offsetting and prior to fix->flt conversion.
Field Name
Bits
Default
Description
MIN_INDX
31:0
none
minimum clamp value for index clamp, extend it to 32bits
VGT:VGT_MULTI_PRIM_IB_RESET_EN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a94
DESCRIPTION: This register enabling reseting of prim based on reset index
Field Name
Bits
Default
Description
RESET_EN
0
none
IF SET, THEN RESET INDEX IS USED FOR
RESETING A PRIM
POSSIBLE VALUES:
00 - multi_prim reset off
01 - multi_prim reset on
VGT:VGT_MULTI_PRIM_IB_RESET_INDX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2840c
DESCRIPTION: This register specifies the 32-bit index value used to reset the primitive order (strip/fan/polygon)
Field Name
Bits
Default
Description
RESET_INDX
31:0
none
If this value matches an index in the IB, a new primitive
set is started.
VGT:VGT_NUM_INDICES · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x8970
DESCRIPTION: VGT Number of Indices
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
24
Revision 1.0
NUM_INDICES
31:0
none
April 26, 2011
This field indicates the number of indices to process for
this draw initiator. Note this count is not necessarily the
count of the primitives. It is also not the index buffer size
in memory.When using Dx11 compute shaders, this
register needs to be written by the driver to the product
of x,y,z which are the 3 dimensions that define a
compute shader threadgroup size.
VGT:VGT_NUM_INSTANCES · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x8974
DESCRIPTION: VGT Number of Instances
Field Name
Bits
Default
Description
NUM_INSTANCES
31:0
none
Number of instances in a draw call, if set to zero, it is
interpreted as 1. The maximum value is 2^32-1
VGT:VGT_OUTPUT_PATH_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a10
DESCRIPTION: THIS REGISTER IS IGNORED IN MAJOR MODE 0 FOR PRIM TYPES 0 THRU 21 !! This
register selects which backend path will be used by the VGT block.
Field Name
Bits
Default
Description
PATH_SELECT
2:0
none
This field indicates the VGT back-end path to be used.
POSSIBLE VALUES:
00 - VGT_OUTPATH_VTX_REUSE:
VGT_OUTPATH_VTX_REUSE
01 - VGT_OUTPATH_TESS_EN:
VGT_OUTPATH_TESS_EN
02 - VGT_OUTPATH_PASSTHRU:
VGT_OUTPATH_PASSTHRU
03 - VGT_OUTPATH_GS_BLOCK:
VGT_OUTPATH_GS_BLOCK
04 - VGT_OUTPATH_HS_BLOCK:
VGT_OUTPATH_HS_BLOCK
VGT:VGT_OUT_DEALLOC_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c5c
DESCRIPTION: This register controls, within a process vector, when the previous process vector is de-allocated.
Field Name
Bits
Default
Description
DEALLOC_DIST
6:0
none
From r7xx onwards this register should only be set to 16
VGT:VGT_PRIMITIVEID_EN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a84
DESCRIPTION: This register specifies the 32-bit start primitiveID value specified by user which is incremented
for each new primitive
Field Name
Bits
Default
Description
PRIMITIVEID_EN
0
none
PrimitiveID generation is enabled
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POSSIBLE VALUES:
00 - suppress PrimitiveID output
01 - output primitiveID
VGT:VGT_PRIMITIVE_TYPE · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x8958
DESCRIPTION: VGT Primitive Type
Field Name
Bits
Default
Description
PRIM_TYPE
5:0
none
Primitive Type.
This field is only used in Major mode 0. For Major Mode
1, the prim type specified in the
VGT_GRP_PRIM_TYPE register is used
POSSIBLE VALUES:
00 - DI_PT_NONE: DI_PT_NONE None (does not
create draw trigger)
01 - DI_PT_POINTLIST: DI_PT_POINTLIST Point
List
02 - DI_PT_LINELIST: DI_PT_LINELIST Line List
03 - DI_PT_LINESTRIP: DI_PT_LINESTRIP Line
Strip
04 - DI_PT_TRILIST: DI_PT_TRILIST Tri List
05 - DI_PT_TRIFAN: DI_PT_TRIFAN Tri Fan
06 - DI_PT_TRISTRIP: DI_PT_TRISTRIP Tri Strip
07 - DI_PT_UNUSED_0: DI_PT_UNUSED_0
Reserved 1
08 - DI_PT_UNUSED_1: DI_PT_UNUSED_1
Reserved 2
09 - DI_PT_PATCH: DI_PT_PATCH Patch prim
type used in conjuction with HS_NUM_INPUT_CP
10 - DI_PT_LINELIST_ADJ:
DI_PT_LINELIST_ADJ Adjacent Line List
11 - DI_PT_LINESTRIP_ADJ:
DI_PT_LINESTRIP_ADJ Adjacent Line Strip
12 - DI_PT_TRILIST_ADJ: DI_PT_TRILIST_ADJ
Adjacent Tri List
13 - DI_PT_TRISTRIP_ADJ:
DI_PT_TRISTRIP_ADJ Adjacent Tri Strip
14 - DI_PT_UNUSED_3: DI_PT_UNUSED_3
Reserved 3
15 - DI_PT_UNUSED_4: DI_PT_UNUSED_4
Reserved 4
16 - DI_PT_TRI_WITH_WFLAGS:
DI_PT_TRI_WITH_WFLAGS Tri List w/Flags (legacy
R128)
17 - DI_PT_RECTLIST: DI_PT_RECTLIST Rect
List
18 - DI_PT_LINELOOP: DI_PT_LINELOOP Line
LOOP
19 - DI_PT_QUADLIST: DI_PT_QUADLIST Quad
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List
20 - DI_PT_QUADSTRIP: DI_PT_QUADSTRIP
Quad Strip
21 - DI_PT_POLYGON: DI_PT_POLYGON
Polygon
22 - DI_PT_2D_COPY_RECT_LIST_V0:
DI_PT_2D_COPY_RECT_LIST_V0 2D Copy Rect List
V0
23 - DI_PT_2D_COPY_RECT_LIST_V1:
DI_PT_2D_COPY_RECT_LIST_V1 2D Copy Rect List
V1
24 - DI_PT_2D_COPY_RECT_LIST_V2:
DI_PT_2D_COPY_RECT_LIST_V2 2D Copy Rect List
V2
25 - DI_PT_2D_COPY_RECT_LIST_V3:
DI_PT_2D_COPY_RECT_LIST_V3 2D Copy Rect List
V3
26 - DI_PT_2D_FILL_RECT_LIST:
DI_PT_2D_FILL_RECT_LIST 2D Fill Rect List
27 - DI_PT_2D_LINE_STRIP:
DI_PT_2D_LINE_STRIP 2D Line Strip
28 - DI_PT_2D_TRI_STRIP:
DI_PT_2D_TRI_STRIP 2D Triangle Strip
VGT:VGT_REUSE_OFF · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ab4
DESCRIPTION: This register will turn off reuse in for VS process vector generation. Note that we will never turn
off reuse for ES process vector. Reuse will be turned off for streamout and viewport
Field Name
Bits
Default
Description
REUSE_OFF
0
none
reuse is off (set to 1)
POSSIBLE VALUES:
00 - Reuse on
01 - Reuse off
VGT:VGT_SHADER_STAGES_EN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b54
DESCRIPTION: This is used to specify what shader stages are enabled. A VGT_FLUSH or PIPE FLUSH maybe
required when changing to/from some combinations
Field Name
Bits
Default
Description
LS_EN
1:0
none
Controls the behavior of the LS stage
POSSIBLE VALUES:
00 - LS_STAGE_OFF: LS shader stage is Off
01 - LS_STAGE_ON: LS shader stage is On
02 - CS_STAGE_ON: Dx11 Compute shader is On
03 - RESERVED_LS: RESERVED
HS_EN
© 2011 Advanced Micro Devices, Inc.
Proprietary
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none
Controls the behavior of the HS stage
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POSSIBLE VALUES:
00 - HS_STAGE_OFF: HS Stage is Off
01 - HS_STAGE_ON: HS Stage is On
ES_EN
4:3
none
Controls the behavior of the ES stage
POSSIBLE VALUES:
00 - ES_STAGE_OFF: ES Stage is Off
01 - ES_STAGE_DS: ES Stage is On, the ES is the
DS Shader for tessellation eveluation
02 - ES_STAGE_REAL: ES Stage is On, and a real
ES is being used in conjuction with a GS
03 - RESERVED_ES: RESERVED
GS_EN
5
none
Controls the behavior of the GS stage
POSSIBLE VALUES:
00 - GS_STAGE_OFF: GS Stage is Off
01 - GS_STAGE_ON: GS Stage is On,
VGT_GS_MODE.bits.MODE must be set to
SCENARIO_G
VS_EN
7:6
none
Controls the behavior of the VS stage
POSSIBLE VALUES:
00 - VS_STAGE_REAL: VS Stage is On, writes to
the parameter cache (Dx9 mode)
01 - VS_STAGE_DS: VS Stage is On, acts as an
evaluation shader (DS) for Dx11 tessellation
02 - VS_STAGE_COPY_SHADER: VS Stage is On,
the VS is a copy shader for fetching from the GS ring
and writing to the parameter cache
03 - RESERVED_VS: RESERVED
DYNAMIC_HS
8
none
Indicates whether the output of the HS stages always
stays on-chip (evergreen mode) or whether its
dynamically decided to use off-chip memory and thus
use multiple SIMDs to execute subsequent DS waves
from the threadgroup
POSSIBLE VALUES:
00 - hs_onchip
01 - hs_dynamic_off_chip
VGT:VGT_STRMOUT_BASE_OFFSET_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b10
DESCRIPTION: Stream out base_0 + offset_0. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
31:0
none
DWORD base+offset for given stream out buffer. Set by
CP or driver.
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VGT:VGT_STRMOUT_BASE_OFFSET_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b14
DESCRIPTION: Stream out base_1 + offset_1. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
31:0
none
DWORD base+offset for given stream out buffer. Set by
CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b18
DESCRIPTION: Stream out base_2 + offset_2. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
31:0
none
DWORD base+offset for given stream out buffer. Set by
CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b1c
DESCRIPTION: Stream out base_3 + offset_3. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
31:0
none
DWORD base+offset for given stream out buffer. Set by
CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_HI_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b44
DESCRIPTION: Upper 6-bits of 40-bits Stream out base_0 + offset_0. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
5:0
none
Upper 6-bits of 40-bits DWORD base+offset for given
stream out buffer. Set by CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_HI_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b48
DESCRIPTION: Upper 6-bits of 40-bits Stream out base_1 + offset_1. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
5:0
none
Upper 6-bits of 40-bits DWORD base+offset for given
stream out buffer. Set by CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_HI_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b4c
DESCRIPTION: Upper 6-bits of 40-bits Stream out base_2 + offset_2. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
5:0
none
Upper 6-bits of 40-bits DWORD base+offset for given
stream out buffer. Set by CP or driver.
VGT:VGT_STRMOUT_BASE_OFFSET_HI_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b50
© 2011 Advanced Micro Devices, Inc.
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DESCRIPTION: Upper 6-bits of 40-bits Stream out base_3 + offset_3. This register is owned by SQ.
Field Name
Bits
Default
Description
BASE_OFFSET
5:0
none
Upper 6-bits of 40-bits DWORD base+offset for given
stream out buffer. Set by CP or driver.
VGT:VGT_STRMOUT_BUFFER_BASE_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ad8
DESCRIPTION: Stream-out base.
Field Name
Bits
Default
Description
BASE
31:0
none
256-byte aligned buffer base for given stream out buffer.
Bits 31:0 corresponds to 39:8 of memory address. This
data can be stored in the coherency registers. This
register is snooped by CP.
VGT:VGT_STRMOUT_BUFFER_BASE_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ae8
DESCRIPTION: Stream-out base.
Field Name
Bits
Default
Description
BASE
31:0
none
256-byte aligned buffer base for given stream out buffer.
Bits 31:0 corresponds to 39:8 of memory address. This
data can be stored in the coherency registers. This
register is snooped by CP.
VGT:VGT_STRMOUT_BUFFER_BASE_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28af8
DESCRIPTION: Stream-out base.
Field Name
Bits
Default
Description
BASE
31:0
none
256-byte aligned buffer base for given stream out buffer.
Bits 31:0 corresponds to 39:8 of memory address. This
data can be stored in the coherency registers. This
register is snooped by CP.
VGT:VGT_STRMOUT_BUFFER_BASE_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b08
DESCRIPTION: Stream-out base.
Field Name
Bits
Default
Description
BASE
31:0
none
256-byte aligned buffer base for given stream out buffer.
Bits 31:0 corresponds to 39:8 of memory address. This
data can be stored in the coherency registers. This
register is snooped by CP.
VGT:VGT_STRMOUT_BUFFER_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b98
DESCRIPTION: Stream out enable bits. CP will use for SO coherency register validness.
Field Name
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Proprietary
Bits
Default
Description
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STREAM_0_BUFFER_EN
3:0
0x0
Bind buffers for stream 0. Bit 0 set to on indicates buffer
0 is bound, bit 1 for buffer 1, bit 2 for buffer 2 and bit 3
for buffer 3
STREAM_1_BUFFER_EN
7:4
0x0
Bind buffers for stream 1. Bit 0 set to on indicates buffer
0 is bound, bit 1 for buffer 1, bit 2 for buffer 2 and bit 3
for buffer 3
STREAM_2_BUFFER_EN
11:8
0x0
Bind buffers for stream 2. Bit 0 set to on indicates buffer
0 is bound, bit 1 for buffer 1, bit 2 for buffer 2 and bit 3
for buffer 3
STREAM_3_BUFFER_EN
15:12
0x0
Bind buffers for stream 3. Bit 0 set to on indicates buffer
0 is bound, bit 1 for buffer 1, bit 2 for buffer 2 and bit 3
for buffer 3
VGT:VGT_STRMOUT_BUFFER_FILLED_SIZE_0 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8960
DESCRIPTION: Stream-out adjusted size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Sum of (SO_BufferOffset +
BufDwordWritten) for given buffer. Read Only. To read
this register the VGT needs to be flushed to the point
BufDwordWritten counts are maintained.
VGT:VGT_STRMOUT_BUFFER_FILLED_SIZE_1 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8964
DESCRIPTION: Stream-out adjusted size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Sum of (SO_BufferOffset +
BufDwordWritten) for given buffer. Read Only. To read
this register the VGT needs to be flushed to the point
BufDwordWritten counts are maintained.
VGT:VGT_STRMOUT_BUFFER_FILLED_SIZE_2 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8968
DESCRIPTION: Stream-out adjusted size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Sum of (SO_BufferOffset +
BufDwordWritten) for given buffer. Read Only. To read
this register the VGT needs to be flushed to the point
BufDwordWritten counts are maintained.
VGT:VGT_STRMOUT_BUFFER_FILLED_SIZE_3 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x896c
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DESCRIPTION: Stream-out adjusted size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Sum of (SO_BufferOffset +
BufDwordWritten) for given buffer. Read Only. To read
this register the VGT needs to be flushed to the point
BufDwordWritten counts are maintained.
VGT:VGT_STRMOUT_BUFFER_OFFSET_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28adc
DESCRIPTION: Stream out offset.
Field Name
Bits
Default
Description
OFFSET
31:0
none
DWORD offset for given stream out buffer. Writing this
register will cause the VGT to load a Zero into
BufDwordWritten[4] and SO_CurVertIndex.
VGT:VGT_STRMOUT_BUFFER_OFFSET_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28aec
DESCRIPTION: Stream out offset.
Field Name
Bits
Default
Description
OFFSET
31:0
none
DWORD offset for given stream out buffer. Writing this
register will cause the VGT to load a Zero into
BufDwordWritten[4] and SO_CurVertIndex.
VGT:VGT_STRMOUT_BUFFER_OFFSET_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28afc
DESCRIPTION: Stream out offset.
Field Name
Bits
Default
Description
OFFSET
31:0
none
DWORD offset for given stream out buffer. Writing this
register will cause the VGT to load a Zero into
BufDwordWritten[4] and SO_CurVertIndex.
VGT:VGT_STRMOUT_BUFFER_OFFSET_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b0c
DESCRIPTION: Stream out offset.
Field Name
Bits
Default
Description
OFFSET
31:0
none
DWORD offset for given stream out buffer. Writing this
register will cause the VGT to load a Zero into
BufDwordWritten[4] and SO_CurVertIndex.
VGT:VGT_STRMOUT_BUFFER_SIZE_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ad0
DESCRIPTION: Stream-out size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Buffer size for given stream out buffer.
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VGT:VGT_STRMOUT_BUFFER_SIZE_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ae0
DESCRIPTION: Stream-out size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Buffer size for given stream out buffer.
VGT:VGT_STRMOUT_BUFFER_SIZE_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28af0
DESCRIPTION: Stream-out size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Buffer size for given stream out buffer.
VGT:VGT_STRMOUT_BUFFER_SIZE_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b00
DESCRIPTION: Stream-out size.
Field Name
Bits
Default
Description
SIZE
31:0
none
DWORD Buffer size for given stream out buffer.
VGT:VGT_STRMOUT_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b94
DESCRIPTION: This register enables streaming out
Field Name
Bits
Default
Description
STREAMOUT_0_EN
0
0x0
If set, stream output to stream 0 is enabled
STREAMOUT_1_EN
1
0x0
If set, stream output to stream 1 is enabled
STREAMOUT_2_EN
2
0x0
If set, stream output to stream 2 is enabled
STREAMOUT_3_EN
3
0x0
If set, stream output to stream 3 is enabled
RAST_STREAM
6:4
0x0
Streamed for which rasterization is enabled, If bit[6] is
set then rasterization is not enabled for any stream
VGT:VGT_STRMOUT_DRAW_OPAQUE_BUFFER_FILLED_SIZE · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28b2c
DESCRIPTION: Draw opaque size.
Field Name
Bits
Default
Description
SIZE
31:0
none
This will be loaded by the CP for a DrawOpaque call by
fetching a memory address containing last
bufferfilledsize associated with the previous stream out
buffer bound to the IA.
VGT:VGT_STRMOUT_DRAW_OPAQUE_OFFSET · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28b28
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DESCRIPTION: Draw opaque offset.
Field Name
Bits
Default
Description
OFFSET
31:0
none
pOffsets from the IASetVertexBuffers binding of a
stream out buffer that is to be used as src data. The
retrived BufferFilledSize minus this poffset if positive,
will determine the amount of data from which primitives
can be created.
VGT:VGT_STRMOUT_DRAW_OPAQUE_VERTEX_STRIDE · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28b30
DESCRIPTION: Draw opaque vertex stride.
Field Name
Bits
Default
Description
VERTEX_STRIDE
8:0
none
vertex stride used for draw opaque call
VGT:VGT_STRMOUT_VTX_STRIDE_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ad4
DESCRIPTION: Stream out stride.
Field Name
Bits
Default
Description
STRIDE
9:0
none
DWORD stride between vertices in given stream-out
buffer. From stream output declarations details of dx10
spec, the max stride 2048 bytes or 512 words defined to
be the spacing between the beginning of each vertex.
VGT:VGT_STRMOUT_VTX_STRIDE_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ae4
DESCRIPTION: Stream out stride.
Field Name
Bits
Default
Description
STRIDE
9:0
none
DWORD stride between vertices in given stream-out
buffer. From stream output declarations details of dx10
spec, the max stride 2048 bytes or 512 words defined to
be the spacing between the beginning of each vertex.
VGT:VGT_STRMOUT_VTX_STRIDE_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28af4
DESCRIPTION: Stream out stride.
Field Name
Bits
Default
Description
STRIDE
9:0
none
DWORD stride between vertices in given stream-out
buffer. From stream output declarations details of dx10
spec, the max stride 2048 bytes or 512 words defined to
be the spacing between the beginning of each vertex.
VGT:VGT_STRMOUT_VTX_STRIDE_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b04
DESCRIPTION: Stream out stride.
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Field Name
Bits
Default
Description
STRIDE
9:0
none
DWORD stride between vertices in given stream-out
buffer. From stream output declarations details of dx10
spec, the max stride 2048 bytes or 512 words defined to
be the spacing between the beginning of each vertex.
VGT:VGT_SYS_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x898c
DESCRIPTION: Used to specify system constraints
Field Name
Bits
Default
Description
DUAL_CORE_EN
0
0x1
Set if dual cores are present
MAX_LS_HS_THDGRP
6:1
0x8
Reserved.
VGT:VGT_VERTEX_REUSE_BLOCK_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c58
DESCRIPTION: This register controls the behavior of the Vertex Reuse block at the backend of the VGT. This
register is relevant only if the VGT_OUTPUT_PATH_CNTL register (or the prim type in Major Mode 0) specifies
the Vertex Reuse Block for the VGT backend path.
Field Name
Bits
Default
Description
VTX_REUSE_DEPTH
7:0
none
From r7xx onwards, the reuse depth should be set to 14.
It can also be set to 15 (if prim type is line) and 16 (if
prim type is points)
VGT:VGT_VTX_CNT_EN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ab8
DESCRIPTION: This register specifies auto-index generation in reuse mode. The y component of first vector
output will have auto index value. The auto-index value is reset to zero by an event sent to VGT.
Field Name
Bits
Default
Description
VTX_CNT_EN
0
none
Set to one if auto index generation is enabled. This is for
import by the vertex shader over the y channel. It is
different than DRAW_INDEX_AUTO
POSSIBLE VALUES:
00 - Auto off
01 - Auto on
VGT:VGT_VTX_VECT_EJECT_REG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x88b0
DESCRIPTION: This register defines the number of primitives that are allowed to pass during the assembly of a
single vertex vector. After this number of primitives have passed, the vertex vector is submitted to the shaders for
processing even if it is not full.
Field Name
Bits
Default
Description
PRIM_COUNT
9:0
0x7F
This is the count of primitives allowed to pass during the
assembly of a single vertex vector.
© 2011 Advanced Micro Devices, Inc.
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2. Primitive Assembly Registers
PA:PA_CL_CLIP_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28810
DESCRIPTION: Clipper Control Bits
Field Name
Bits
Default
Description
UCP_ENA_0
0
none
Enable User-Clip Plane 0
UCP_ENA_1
1
none
Enable User-Clip Plane 1
UCP_ENA_2
2
none
Enable User-Clip Plane 2
UCP_ENA_3
3
none
Enable User-Clip Plane 3
UCP_ENA_4
4
none
Enable User-Clip Plane 4
UCP_ENA_5
5
none
Enable User-Clip Plane 5
PS_UCP_Y_SCALE_NEG
13
none
PS_UCP_MODE
15:14
none
0 = Cull using distance from center of point
1 = Cull using radius-based distance from center of
point
2 = Cull using radius-based distance from center of
point, Expand and Clip on intersection
3 = Always expand and clip as trifan
CLIP_DISABLE
16
none
Disables clip code generation and clipping process for
TCL
UCP_CULL_ONLY_ENA
17
none
Cull Primitives against UCPS, but don`t clip
BOUNDARY_EDGE_FLAG_ENA
18
none
Currently unused: Pending Delete. Left as placeholder
for now.
DX_CLIP_SPACE_DEF
19
none
Clip space is defined as:
0: -W < X < W, -W < Y < W, -W < Z < W (OpenGL
Definition)
1: -W < X < W, -W < Y < W, 0 < Z < W (DirectX
Definition)
DIS_CLIP_ERR_DETECT
20
none
Disables culling of primitives for which the clipped
detects an error. Default is 0
VTX_KILL_OR
21
none
Used if Vertex Kill flags are exported from Vertex
Shader. If clear, ALL vertices for current primitive
must be set to kill the primitive ( AND MODE). If
set, if ANY vertices for current primitive are set, the
the primitive will be killed ( OR MODE).
DX_RASTERIZATION_KILL
22
none
DX_LINEAR_ATTR_CLIP_ENA
24
none
VTE_VPORT_PROVOKE_DISABLE 25
none
ZCLIP_NEAR_DISABLE
26
none
ZCLIP_FAR_DISABLE
27
none
PA:PA_CL_CNTL_STATUS · [R] · 32 bits · Access: 32 · GpuF0MMReg:0x8a10
© 2011 Advanced Micro Devices, Inc.
Proprietary
36
Revision 1.0
April 26, 2011
DESCRIPTION: Status Bits
Field Name
Bits
Default
Description
CL_BUSY
31
none
Busy Status Bit
PA:PA_CL_ENHANCE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8a14
DESCRIPTION: Used for Late Additions of Control Bits
Field Name
Bits
Default
Description
CLIP_VTX_REORDER_ENA
0
none
Enables vertex-order-independent clipping
NUM_CLIP_SEQ
2:1
none
Number of Clip Sequences Active (+1). Should be set to
3 (4 sequences) for best performance
CLIPPED_PRIM_SEQ_STALL
3
none
Forces a faster clip path if NUM_CLIP_SEQ is set to 0
(which should only be if 3 does not work)
VE_NAN_PROC_DISABLE
4
none
PA:PA_CL_GB_HORZ_CLIP_ADJ · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28bf0
DESCRIPTION: Horizontal Guard Band Clip Adjust Register
Field Name
Bits
Default
Description
DATA_REGISTER
31:0
none
32-bit floating point value. Should be set to 1.0 for no
guard band.
PA:PA_CL_GB_HORZ_DISC_ADJ · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28bf4
DESCRIPTION: Horizontal Guard Band Discard Adjust Register
Field Name
Bits
Default
Description
DATA_REGISTER
31:0
none
32-bit floating point value. Should be set to 1.0 for no
guard band.
PA:PA_CL_GB_VERT_CLIP_ADJ · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28be8
DESCRIPTION: Vertical Guard Band Clip Adjust Register
Field Name
Bits
Default
Description
DATA_REGISTER
31:0
none
32-bit floating point value. Should be set to 1.0 for no
guard band.
PA:PA_CL_GB_VERT_DISC_ADJ · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28be8c
DESCRIPTION: Vertical Guard Band Discard Adjust Register
Field Name
Bits
Default
Description
DATA_REGISTER
31:0
none
32-bit floating point value. Should be set to 1.0 for no
guard band.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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April 26, 2011
PA:PA_CL_NANINF_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28820
Field Name
Bits
Default
VTE_XY_INF_DISCARD
0
none
VTE_Z_INF_DISCARD
1
none
VTE_W_INF_DISCARD
2
none
VTE_0XNANINF_IS_0
3
none
VTE_XY_NAN_RETAIN
4
none
VTE_Z_NAN_RETAIN
5
none
VTE_W_NAN_RETAIN
6
none
VTE_W_RECIP_NAN_IS_0
7
none
VS_XY_NAN_TO_INF
8
none
VS_XY_INF_RETAIN
9
none
VS_Z_NAN_TO_INF
10
none
VS_Z_INF_RETAIN
11
none
VS_W_NAN_TO_INF
12
none
VS_W_INF_RETAIN
13
none
VS_CLIP_DIST_INF_DISCARD 14
none
VTE_NO_OUTPUT_NEG_0
none
20
Description
PA:PA_CL_POINT_CULL_RAD · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x287e0
DESCRIPTION: Point Sprite Culling Radius Expansion SQRT(XRadExp^2 + YRadExp^2)
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_POINT_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x287dc
DESCRIPTION: Point Sprite Constant Size
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_POINT_X_RAD · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x287d4
DESCRIPTION: Point Sprite X Radius Expansion
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_POINT_Y_RAD · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x287d8
DESCRIPTION: Point Sprite Y Radius Expansion
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
38
Revision 1.0
DATA_REGISTER
31:0
April 26, 2011
none
PA:PA_CL_UCP_[0-5]_W · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x285c8-0x28618
DESCRIPTION: User Clip Plane Data
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_UCP_[0-5]_X · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x285bc-0x2860c
DESCRIPTION: User Clip Plane Data
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_UCP_[0-5]_Y · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x285c0-0x28610
DESCRIPTION: User Clip Plane Data
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_UCP_[0-5]_Z · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x285c4-0x28614
DESCRIPTION: User Clip Plane Data
Field Name
Bits
Default
DATA_REGISTER
31:0
none
Description
PA:PA_CL_VPORT_XOFFSET_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28440-0x285a8
DESCRIPTION: Viewport Transform X Offset - 1-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_XOFFSET
31:0
none
Viewport Offset for X coordinates. An IEEE float.
PA:PA_CL_VPORT_XSCALE_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2843c-0x285a4
DESCRIPTION: Viewport Transform X Scale Factor - 1-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_XSCALE
31:0
none
Viewport Scale Factor for X coordinates. An IEEE float.
PA:PA_CL_VPORT_YOFFSET_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28448-0x285b0
DESCRIPTION: Viewport Transform Y Offset - 1-15 For WGF ViewportId
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
39
Revision 1.0
VPORT_YOFFSET
31:0
none
April 26, 2011
Viewport Offset for Y coordinates. An IEEE float.
PA:PA_CL_VPORT_YSCALE_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28444-0x285ac
DESCRIPTION: Viewport Transform Y Scale Factor - 1-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_YSCALE
31:0
none
Viewport Scale Factor for Y coordinates. An IEEE float.
PA:PA_CL_VPORT_ZOFFSET_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28450-0x285b8
DESCRIPTION: Viewport Transform Z Offset - 1-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_ZOFFSET
31:0
none
Viewport Offset for Z coordinates. An IEEE float.
PA:PA_CL_VPORT_ZSCALE_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2844c-0x285b4
DESCRIPTION: Viewport Transform Z Scale Factor - 1-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_ZSCALE
31:0
none
Viewport Scale Factor for Z coordinates. An IEEE float.
PA:PA_CL_VS_OUT_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2881c
DESCRIPTION: Vertex Shader Output Control
Field Name
Bits
Default Description
CLIP_DIST_ENA_0
0
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_1
1
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_2
2
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_3
3
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_4
4
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_5
5
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CLIP_DIST_ENA_6
6
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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April 26, 2011
CLIP_DIST_ENA_7
7
none
Enable ClipDistance# to be used for user-defined
clipping. Requires VS_OUT_CCDIST#_ENA to be
set.
CULL_DIST_ENA_0
8
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_1
9
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_2
10
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_3
11
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_4
12
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_5
13
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_6
14
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
CULL_DIST_ENA_7
15
none
Enable CullDistance# to be used for user-defined clip
discard. Requires VS_OUT_CCDIST#_ENA to be set.
If all verts of a primitive are outside (culldist<0), then
primitive is discarded, else just let through (i.e. NOT
clipped).
USE_VTX_POINT_SIZE
16
none
Use the PointSize output from the VS (in the x channel
of VS_OUT_MISC_VEC).
USE_VTX_EDGE_FLAG
17
none
Use the EdgeFlag output from the VS (in the y channel
of VS_OUT_MISC_VEC).
USE_VTX_RENDER_TARGET_INDX 18
none
Use the RenderTargetArrayIndx output from the VS (in
the z channel of VS_OUT_MISC_VEC). Only valid
© 2011 Advanced Micro Devices, Inc.
Proprietary
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for WGF Geometry Shader
USE_VTX_VIEWPORT_INDX
19
none
Use the ViewportArrayIndx output from the VS (in the
w channel of VS_OUT_MISC_VEC). Only valid for
WGF Geometry Shader
USE_VTX_KILL_FLAG
20
none
Use the KillFlag output from the VS (in the z channel
of VS_OUT_MISC_VEC). Mutually exclusive from
RTarrayindx
VS_OUT_MISC_VEC_ENA
21
none
Output the VS output misc vector from the VS (SX) to
the PA (primitive assembler). Should be set if any of
the fields are to be used
VS_OUT_CCDIST0_VEC_ENA
22
none
Output the VS output ccdist0 vector from the VS (SX)
to the PA (primitive assembler). Should be set if any of
the fields are to be used
VS_OUT_CCDIST1_VEC_ENA
23
none
Output the VS output ccdist1 vector from the VS (SX)
to the PA (primitive assembler). Should be set if any of
the fields are to be used
PA:PA_CL_VTE_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28818
DESCRIPTION: Viewport Transform Engine Control
Field Name
Bits
Default
Description
VPORT_X_SCALE_ENA
0
none
Viewport Transform Scale Enable for X component
VPORT_X_OFFSET_ENA
1
none
Viewport Transform Offset Enable for X component
VPORT_Y_SCALE_ENA
2
none
Viewport Transform Scale Enable for Y component
VPORT_Y_OFFSET_ENA
3
none
Viewport Transform Offset Enable for Y component
VPORT_Z_SCALE_ENA
4
none
Viewport Transform Scale Enable for Z component
VPORT_Z_OFFSET_ENA
5
none
Viewport Transform Offset Enable for Z component
VTX_XY_FMT
8
none
Indicates that the incoming X, Y have already been
multiplied by 1/W0.
If OFF, the Setup Engine will multiply the X, Y
coordinates by 1/W0.,
VTX_Z_FMT
9
none
Indicates that the incoming Z has already been multiplied
by 1/W0.
If OFF, the Setup Engine will multiply the Z coordinate
by 1/W0.
VTX_W0_FMT
10
none
Indicates that the incoming W0 is not 1/W0.
If ON, the Setup Engine will perform the reciprocal to get
1/W0.
PA:PA_SC_AA_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28be0
DESCRIPTION: Multisample Antialiasing Control
Field Name
Bits
Default
Description
MSAA_NUM_SAMPLES
2:0
none
Specifies the number of samples to use for MSAA Detail
Sampling. 0 = 1-sample, 1 = 2-sample, 2 = 4-sample, 3 =
© 2011 Advanced Micro Devices, Inc.
Proprietary
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Revision 1.0
April 26, 2011
8-sample, 4 = 16-sample.
AA_MASK_CENTROID_DTMN 4
none
Specifies whether to apply the MSAA Mask before or
after the centroid determination. 0 = before; 1 = after.
MAX_SAMPLE_DIST
16:13
none
Specifies the maximum distance (in subpixels) between
the pixel center and the outermost subpixel sample. This
value is used to optimize coarse walk and quad identity.
Should be set to 0 when not anti-aliasing. Max value for
R600 should be 8(16ths).
MSAA_EXPOSED_SAMPLES
22:20
none
Specifies the number of samples the pixel shader can see
from the primitive`s coverage in the pixel.
DETAIL_TO_EXPOSED_MODE 25:24
none
Specifies the mode to use when converting from a higher
detail sample mask to a lower exposed mask. 0 = if result
of MASK off higher samples = 0, then OR, 1 = MASK
off higher samples, 2 = OR.
PA:PA_SC_AA_MASK_X0Y0_X1Y0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c38
DESCRIPTION: Multisample AA Mask Pixel X0,Y0 (Upper Left) and X1,Y0 (Upper Right) of Quad
Field Name
Bits
Default
Description
AA_MASK_X0Y0
15:0
none
16-bit mask applied to pixel X0,Y0(ULC) as follows:
LSB is Sample0, MSB is Sample15.
AA_MASK_X1Y0
31:16
none
16-bit mask applied to pixel X1,Y0(URC) as follows:
LSB is Sample0, MSB is Sample15.
PA:PA_SC_AA_MASK_X0Y1_X1Y1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c3c
DESCRIPTION: Multisample AA Mask Pixel X0,Y1 (Lower Left) and X1,Y1 (Lower Right) of Quad
Field Name
Bits
Default
Description
AA_MASK_X0Y1
15:0
none
16-bit mask applied to pixel X0,Y1(LLC) as follows:
LSB is Sample0, MSB is Sample15.
AA_MASK_X1Y1
31:16
none
16-bit mask applied to pixel X1,Y1(LRC) as follows:
LSB is Sample0, MSB is Sample15.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_0 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28bf8
DESCRIPTION: Multi-Sample Programmable Sample Locations 0-3 for Pixel X0,Y0 (Upper Left) of Quad - Used
by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S0_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S0_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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Revision 1.0
April 26, 2011
S3_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_1 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28bfc
DESCRIPTION: Multi-Sample Programmable Sample Locations 4-7 for Pixel X0,Y0 (Upper Left) of Quad - Used
by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S4_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S4_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_2 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c00
DESCRIPTION: Multi-Sample Programmable Sample Locations 8-11 for Pixel X0,Y0 (Upper Left) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S8_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S8_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y0_3 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c04
DESCRIPTION: Multi-Sample Programmable Sample Locations 12-15 for Pixel X0,Y0 (Upper Left) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S12_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S12_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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April 26, 2011
S14_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_0 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c18
DESCRIPTION: Multi-Sample Programmable Sample Locations 0-3 for Pixel X0,Y1 (Lower Left) of Quad - Used
by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S0_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S0_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_1 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c1c
DESCRIPTION: Multi-Sample Programmable Sample Locations 4-7 for Pixel X0,Y1 (Lower Left) of Quad - Used
by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S4_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S4_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_2 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c20
DESCRIPTION: Multi-Sample Programmable Sample Locations 8-11 for Pixel X0,Y1 (Lower Left) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S8_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S8_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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April 26, 2011
S9_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X0Y1_3 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c24
DESCRIPTION: Multi-Sample Programmable Sample Locations 12-15 for Pixel X0,Y1 (Lower Left) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S12_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S12_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_0 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c08
DESCRIPTION: Multi-Sample Programmable Sample Locations 0-3 for Pixel X1,Y0 (Upper Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S0_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S0_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_1 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c0c
DESCRIPTION: Multi-Sample Programmable Sample Locations 4-7 for Pixel X1,Y0 (Upper Right) of Quad Used by SC, SPI, DB, CB
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
46
Revision 1.0
April 26, 2011
S4_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S4_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_2 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c10
DESCRIPTION: Multi-Sample Programmable Sample Locations 8-11 for Pixel X1,Y0 (Upper Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S8_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S8_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y0_3 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c14
DESCRIPTION: Multi-Sample Programmable Sample Locations 12-15 for Pixel X1,Y0 (Upper Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S12_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S12_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_0 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c28
© 2011 Advanced Micro Devices, Inc.
Proprietary
47
Revision 1.0
April 26, 2011
DESCRIPTION: Multi-Sample Programmable Sample Locations 0-3 for Pixel X1,Y1 (Lower Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S0_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S0_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S1_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S2_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S3_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_1 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c2c
DESCRIPTION: Multi-Sample Programmable Sample Locations 4-7 for Pixel X1,Y1 (Lower Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S4_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S4_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S5_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S6_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S7_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_2 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c30
DESCRIPTION: Multi-Sample Programmable Sample Locations 8-11 for Pixel X1,Y1 (Lower Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S8_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S8_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S9_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S10_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S11_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
© 2011 Advanced Micro Devices, Inc.
Proprietary
48
Revision 1.0
April 26, 2011
PA:PA_SC_AA_SAMPLE_LOCS_PIXEL_X1Y1_3 · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28c34
DESCRIPTION: Multi-Sample Programmable Sample Locations 12-15 for Pixel X1,Y1 (Lower Right) of Quad Used by SC, SPI, DB, CB
Field Name
Bits
Default
Description
S12_X
3:0
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S12_Y
7:4
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_X
11:8
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S13_Y
15:12
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_X
19:16
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S14_Y
23:20
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_X
27:24
none
4b signed offset from pixel center. Range -8/16 to 7/16.
S15_Y
31:28
none
4b signed offset from pixel center. Range -8/16 to 7/16.
PA:PA_SC_CENTROID_PRIORITY_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28bd4
DESCRIPTION: Sample Locations Sorted in Centroid Priority; Driver must sort sample location distances from
closest to furthest, puts closest sample location number in DISTANCE_0, next in DISTANCE_1, and so on
Field Name
Bits
Default
Description
DISTANCE_0
3:0
none
1st closest sample location to center
DISTANCE_1
7:4
none
2nd closest sample location to center
DISTANCE_2
11:8
none
3rd closest sample location to center
DISTANCE_3
15:12
none
3rd closest sample location to center
DISTANCE_4
19:16
none
4th closest sample location to center
DISTANCE_5
23:20
none
5th closest sample location to center
DISTANCE_6
27:24
none
6th closest sample location to center
DISTANCE_7
31:28
none
7th closest sample location to center
PA:PA_SC_CENTROID_PRIORITY_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28bd8
DESCRIPTION: Sample Locations Sorted in Centroid Priority; Driver must sort sample location distances from
closest to furthest, puts closest sample location number in DISTANCE_0, next in DISTANCE_1, and so on
Field Name
Bits
Default
DISTANCE_8
3:0
none
DISTANCE_9
7:4
none
DISTANCE_10
11:8
none
DISTANCE_11
15:12
none
DISTANCE_12
19:16
none
DISTANCE_13
23:20
none
DISTANCE_14
27:24
none
DISTANCE_15
31:28
none
© 2011 Advanced Micro Devices, Inc.
Proprietary
Description
49
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PA:PA_SC_CLIPRECT_[0-3]_BR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28214-0x2822c
DESCRIPTION: Clip Rectangle Bottom-Right Specification
Field Name
Bits
Default
Description
BR_X
14:0
none
Right x value of clip rectangle. 15 bits unsigned. Valid
range 0-16384. Exclusive for BOTTOM_RIGHT
BR_Y
30:16
none
Bottom y value of clip rectangle. 15 bits unsigned. Valid
range 0-16384. Exclusive for BOTTOM_RIGHT
PA:PA_SC_CLIPRECT_[0-3]_TL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28210-0x28228
DESCRIPTION: Clip Rectangle Top-Left Specification
Field Name
Bits
Default
Description
TL_X
14:0
none
Left x value of clip rectangle. 15 bits unsigned. Valid
range 0-16383. Inclusive for UPPER_LEFT
TL_Y
30:16
none
Top y value of clip rectangle. 15 bits unsigned. Valid
range 0-16383. Inclusive for UPPER_LEFT
PA:PA_SC_CLIPRECT_RULE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2820c
DESCRIPTION: OpenGL Clip boolean function
Field Name
Bits
Default
Description
CLIP_RULE
15:0
none
OpenGL Clip boolean function. The `inside` flags for
each of the four clip rectangles form a 4-bit binary
number. The corresponding bit in this 16-bit number
specifies whether the pixel is visible.
PA:PA_SC_EDGERULE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28230
DESCRIPTION: Edge Rule Specification
Field Name
Bits
Default
Description
ER_TRI
3:0
none
Edge rule for triangles; L:R:T:B -> 1 = in, 0 = out
ER_POINT
7:4
none
Edge rule for points; L:R:T:B -> 1 = in, 0 = out
ER_RECT
11:8
none
Edge rule for rects; L:R:T:B -> 1 = in, 0 = out
ER_LINE_LR
17:12
none
Edge rule for left-right lines;
TB_L:TB_R:BT_L:BT_R:HT:HB -> 1 = in, 0 = out. If
PA_SC_LINE_CNTL.DX10_DIAMOND_TEST_ENA
is set (only available on RV730/RV710/RV740, not
available on RV770, this field needs to be set to a 0x1A
ER_LINE_RL
23:18
none
Edge rule for right-left lines;
TB_L:TB_R:BT_L:BT_R:HT:HB -> 1 = in, 0 = out. If
PA_SC_LINE_CNTL.DX10_DIAMOND_TEST_ENA
is set (only available on RV730/RV710/RV740, not
available on RV770, this field needs to be set to a 0x26
ER_LINE_TB
27:24
none
Edge rule for top-bottom lines;
© 2011 Advanced Micro Devices, Inc.
Proprietary
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Revision 1.0
April 26, 2011
LR_L:LR_R:RL_L:RL_R -> 1 = in, 0 = out. If
PA_SC_LINE_CNTL.DX10_DIAMOND_TEST_ENA
is set (only available on RV730/RV710/RV740, not
available on RV770, this field needs to be set to a 0xA
ER_LINE_BT
31:28
none
Edge rule for bottom-top lines;
LR_L:LR_R:RL_L:RL_R -> 1 = in, 0 = out. If
PA_SC_LINE_CNTL.DX10_DIAMOND_TEST_ENA
is set (only available on RV730/RV710/RV740, not
available on RV770, this field needs to be set to a 0xA
PA:PA_SC_GENERIC_SCISSOR_BR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28244
DESCRIPTION: Generic Scissor rectangle specification. Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
BR_X
14:0
none
Right hand edge of scissor rectangle. 15 bits unsigned.
Valid range 0-16384. Exclusive for BOTTOM_RIGHT.
BR_Y
30:16
none
Lower edge of scissor rectangle. 15 bits unsigned. Valid
range 0-16384. Exclusive for BOTTOM_RIGHT.
PA:PA_SC_GENERIC_SCISSOR_TL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28240
DESCRIPTION: Generic Scissor rectangle specification. Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
TL_X
14:0
none
Left hand edge of scissor rectangle. 15-bits unsigned.
Valid range 0-16383. Inclusive for UPPER_LEFT.
TL_Y
30:16
none
Upper edge of scissor rectangle. 15-bits unsigned. Valid
range 0-16383. Inclusive for UPPER_LEFT.
none
If set, generic scissor is not offset by the
WINDOW_OFFSET register values.
WINDOW_OFFSET_DISABLE 31
PA:PA_SC_LINE_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28bdc
DESCRIPTION: Line Drawing Control
Field Name
Bits
Default
Description
EXPAND_LINE_WIDTH
9
none
If set, the line width will be expanded by the 1/cos(a)
where a the minimum angle from horz or vertical. This
bit most likely should be set whenever
MSAA_ENABLE is set or Line Antialiasing is being
done in pixel shader.
LAST_PIXEL
10
none
If set, the last pixel of a line will not be killed by the
diamond exit rule.
PERPENDICULAR_ENDCAP_ENA 11
none
This functionality is only available on
RV730/RV710/RV740, not available on RV770. If set,
line endcaps will be perpendicular instead of axis-
© 2011 Advanced Micro Devices, Inc.
Proprietary
51
Revision 1.0
April 26, 2011
aligned.
DX10_DIAMOND_TEST_ENA
12
none
This functionality is only available on
RV730/RV710/RV740, not available on RV770. If set,
lines will follow DX10 line diamond conformance.
When this bit is set the following fields in
PA_SC_EDGERULE need to be programmed as
follows: ER_LINE_LR = 0x1A; ER_LINE_RL = 0x26;
ER_LINE_TB = 0xA; ER_LINE_BT = 0xA
PA:PA_SC_LINE_STIPPLE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a0c
DESCRIPTION: Line Stipple Control
Field Name
Bits
Default
Description
LINE_PATTERN
15:0
none
16-bit pattern
REPEAT_COUNT
23:16
none
Pattern bit repeat count (minus 1). Field has a valid range
of 0-255 which maps to OGL api values of 1-256.
PATTERN_BIT_ORDER
28
none
Bit Ordering of Pattern Bits:
0 = Little Bit Order,
1 = Big Bit Order
AUTO_RESET_CNTL
30:29
none
Auto reset control of current pattern count/pointer.
0 = Never reset current pattern count/pointer.
1 = Reset current pattern count/pointer at each primitive
(line list).
2 = Reset current pattern count/pointer at each packet
(line strip).
PA:PA_SC_LINE_STIPPLE_STATE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8b10
DESCRIPTION: Current values for Line Stipple
Field Name
Bits
Default
Description
CURRENT_PTR
3:0
none
Indicates current state of pattern pointer (can be set w/ a
register write).
CURRENT_COUNT
15:8
none
Current state of the repeat counter (can be set w/a
register write).
PA:PA_SC_MODE_CNTL_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a48
DESCRIPTION: SC Mode Control Register for Various Enables
Field Name
Bits
Default
Description
MSAA_ENABLE
0
none
Enable MultiSample AA in DX10 and below. Used for
lines in DX10.1 and above.
VPORT_SCISSOR_ENABLE
1
none
Enables viewport scissors
LINE_STIPPLE_ENABLE
2
none
Enable line stipple processing
© 2011 Advanced Micro Devices, Inc.
Proprietary
52
Revision 1.0
April 26, 2011
PA:PA_SC_SCREEN_SCISSOR_BR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28034
DESCRIPTION: Screen Scissor rectangle specification. This scissor is NOT affected by WINDOW_OFFSET.
Negative numbers clamped to 0, so reads will mismatch on negative values.
Field Name
Bits
Default
Description
BR_X
15:0
none
Right hand edge of scissor rectangle. 16 bits signed.
Valid range -32K to 16384. Exclusive for
BOTTOM_RIGHT.
BR_Y
31:16
none
Lower edge of scissor rectangle. 16 bits signed. Valid
range -32K to 16384. Exclusive for BOTTOM_RIGHT.
PA:PA_SC_SCREEN_SCISSOR_TL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28030
DESCRIPTION: Screen Scissor rectangle specification. This scissor is NOT affected by WINDOW_OFFSET.
Negative numbers clamped to 0, so reads will mismatch on negative values.
Field Name
Bits
Default
Description
TL_X
15:0
none
Left hand edge of scissor rectangle. 16 bits signed. Valid
range -32K to 16383. Inclusive for UPPER_LEFT.
TL_Y
31:16
none
Upper edge of scissor rectangle. 16 bits signed. Valid
range -32K to 16383. Inclusive for UPPER_LEFT.
PA:PA_SC_VPORT_SCISSOR_[0-15]_BR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x282540x282cc
DESCRIPTION: WGF ViewportID Scissor rectangle specification(0-15). Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
BR_X
14:0
none
Right hand edge of scissor rectangle. 15 bits unsigned.
Valid range 0-16384. Exclusive for BOTTOM_RIGHT.
BR_Y
30:16
none
Lower edge of scissor rectangle. 15 bits unsigned. Valid
range 0-16384. Exclusive for BOTTOM_RIGHT.
PA:PA_SC_VPORT_SCISSOR_[0-15]_TL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x282500x282c8
DESCRIPTION: WGF ViewportId Scissor rectangle specification(0-15). Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
TL_X
14:0
none
Left hand edge of scissor rectangle. 15-bits unsigned.
Valid range 0-16383. Inclusive for UPPER_LEFT.
TL_Y
30:16
none
Upper edge of scissor rectangle. 15-bits unsigned. Valid
range 0-16383. Inclusive for UPPER_LEFT.
none
If set, viewportId scissor is not offset by the
WINDOW_OFFSET register values.
WINDOW_OFFSET_DISABLE 31
© 2011 Advanced Micro Devices, Inc.
Proprietary
53
Revision 1.0
April 26, 2011
PA:PA_SC_VPORT_ZMAX_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x282d4-0x2834c
DESCRIPTION: Viewport Transform Z Max Clamp - 0-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_ZMAX
31:0
none
Maximum Z Value from Viewport Transform. Z values
will be clamped by the DB to this value.
PA:PA_SC_VPORT_ZMIN_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x282d0-0x28348
DESCRIPTION: Viewport Transform Z Min Clamp - 0-15 For WGF ViewportId
Field Name
Bits
Default
Description
VPORT_ZMIN
31:0
none
Minimum Z Value from Viewport Transform. Z values
will be clamped by the DB to this value.
PA:PA_SC_WINDOW_OFFSET · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28200
DESCRIPTION: Offset from screen coords to window coords. Vertices will be offset by these values if
PA_SU_SC_MODE_CNTL.VTX_WINDOW_OFFSET_ENABLE is et. The WINDOW_SCISSOR will be offset by
these values if the WINDOW_SCISSOR_TL.WINDOW_OFFSET_DISABLE is clear. If this value allows the window
to extend beyond the Front Buffer (Surface) dimensions, it is expected that the SCREEN_SCISSOR is used to limit to
FB surface.
Field Name
Bits
Default
Description
WINDOW_X_OFFSET
15:0
none
Offset in x-direction from screen to window coords. 16bit 2`s comp signed value. Valid Range +/- 32K.
WINDOW_Y_OFFSET
31:16
none
Offset in y-direction from screen to window coords. 16bit 2`s comp signed value. Valid Range +/- 32K.
PA:PA_SC_WINDOW_SCISSOR_BR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28208
DESCRIPTION: Window Scissor rectangle specification. Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
BR_X
14:0
none
Right hand edge of scissor rectangle. 15 bits unsigned.
Valid range 0-16384. Exclusive for BOTTOM_RIGHT.
BR_Y
30:16
none
Lower edge of scissor rectangle. 15 bits unsigned. Valid
range 0-16384. Exclusive for BOTTOM_RIGHT.
PA:PA_SC_WINDOW_SCISSOR_TL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28204
DESCRIPTION: Window Scissor rectangle specification. Scissor is conditionally (See
WINDOW_OFFSET_ENABLE) offset by WINDOW_OFFSET.
Field Name
Bits
Default
Description
TL_X
14:0
none
Left hand edge of scissor rectangle. 15-bits unsigned.
Valid range 0-16383. Inclusive for UPPER_LEFT.
TL_Y
30:16
none
Upper edge of scissor rectangle. 15-bits unsigned. Valid
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range 0-16383. Inclusive for UPPER_LEFT.
WINDOW_OFFSET_DISABLE 31
none
If set, window scissor is not offset by the
WINDOW_OFFSET register values.
PA:PA_SU_CNTL_STATUS · [R] · 32 bits · Access: 32 · GpuF0MMReg:0x8a50
DESCRIPTION: Status Bits
Field Name
Bits
Default
Description
SU_BUSY
31
none
Busy Status Bit
PA:PA_SU_HARDWARE_SCREEN_OFFSET · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28234
DESCRIPTION: Hardware Screen Offset to Center Guardband
Field Name
Bits
Default
Description
HW_SCREEN_OFFSET_X
4:0
none
Hardware screen offset in X from 0 to 8K in units of 256
pixels.
HW_SCREEN_OFFSET_Y
12:8
none
Hardware screen offset in Y from 0 to 8K in units of 256
pixels.
PA:PA_SU_LINE_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a08
DESCRIPTION: Line control
Field Name
Bits
Default
Description
WIDTH
15:0
none
1/2 width of line, in subpixels; (16.0) fixed format.
PA:PA_SU_LINE_STIPPLE_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28824
DESCRIPTION: Set-Up Engine Line Stipple Control
Field Name
Bits
Default
Description
LINE_STIPPLE_RESET
1:0
none
line stipple reset mode: 0-no reset, 1-end of prim, 2-end
of packet, 3-end of polymode line.
EXPAND_FULL_LENGTH
2
none
for antialiased line stipple, calculate stipple distance
using true distance (not major).
FRACTIONAL_ACCUM
3
none
for antialiased line stipple, calculate stipple using
travelled distance including fractional bits.
DIAMOND_ADJUST
4
none
for aliased line stipple, adjust stipple pattern to account
for start vertex diamond exit .
PA:PA_SU_LINE_STIPPLE_SCALE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28828
DESCRIPTION: Set-Up Engine Line Stipple Scale Factor
Field Name
Bits
Default
Description
LINE_STIPPLE_SCALE
31:0
none
floating point scale factor used to derive stipple start and
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end point.
PA:PA_SU_LINE_STIPPLE_VALUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8a60
DESCRIPTION: Current value for Set-Up Engine Line Stipple
Field Name
Bits
Default
Description
LINE_STIPPLE_VALUE
23:0
none
Current value for line stipple with 8 fractional.
PA:PA_SU_POINT_MINMAX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a04
DESCRIPTION: Specifies maximum and minimum point & sprite sizes for per vertex size specification.
Field Name
Bits
Default
Description
MIN_SIZE
15:0
none
Minimum point & sprite radius size to allow. fixed point
(12.4), 12 bits integer, 4 bits fractional pixels
MAX_SIZE
31:16
none
Maximum point & sprite radius size to allow. fixed point
(12.4), 12 bits integer, 4 bits fractional pixels
PA:PA_SU_POINT_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28a00
DESCRIPTION: Dimensions for Points
Field Name
Bits
Default
Description
HEIGHT
15:0
none
1/2 Height (Vertical Radius) of point; fixed (12.4), 12
bits integer, 4 bits fractional pixels.
WIDTH
31:16
none
1/2 Width (Horizontal Radius)of point; fixed (12.4), 12
bits integer, 4 bits fractional pixels.
PA:PA_SU_POLY_OFFSET_BACK_OFFSET · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b8c
DESCRIPTION: Back-Facing Polygon Offset Offset
Field Name
Bits
Default
Description
OFFSET
31:0
none
Specifies polygon offset offset for back-facing polygons;
32b IEEE float format.
PA:PA_SU_POLY_OFFSET_BACK_SCALE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b88
DESCRIPTION: Back-Facing Polygon Offset Scale
Field Name
Bits
Default
Description
SCALE
31:0
none
Specifies polygon offset scale for back-facing polygons;
32-bit IEEE float format.
PA:PA_SU_POLY_OFFSET_CLAMP · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b7c
DESCRIPTION: Clamp Value for Polygon Offset
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Field Name
Bits
Default
Description
CLAMP
31:0
none
Specifies the maximum (if clamp is positive) or
minimum (if clamp is negative) value clamp for the
polygon offset result.
PA:PA_SU_POLY_OFFSET_DB_FMT_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b78
DESCRIPTION: Polygon Offset Depth Buffer Format Control
Field Name
Bits
Default Description
POLY_OFFSET_NEG_NUM_DB_BITS 7:0
none
Specifies the number of bits in the depth buffer format.
Specified as a negative value typically. For fixed point
formats, should be number of bits (i.e. -16, -24), for
float formats should be number of mantissa bits (i.e. 23). This is a signed 8b value, range -128,127
POLY_OFFSET_DB_IS_FLOAT_FMT 8
none
Specifies whether the depth buffer format is fixed or
float. The NEG_NUM_DB_BITS is used differently
(i.e. different POLY_OFFSET equation for fixed vs.
float buffer formats.
PA:PA_SU_POLY_OFFSET_FRONT_OFFSET · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b84
DESCRIPTION: Front-Facing Polygon Offset Offset
Field Name
Bits
Default
Description
OFFSET
31:0
none
Specifies polygon offset offset for front-facing polygons;
32b IEEE float format.
PA:PA_SU_POLY_OFFSET_FRONT_SCALE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b80
DESCRIPTION: Front-Facing Polygon Offset Scale
Field Name
Bits
Default
Description
SCALE
31:0
none
Specifies polygon offset scale for front-facing polygons;
32-bit IEEE float format.
PA:PA_SU_PRIM_FILTER_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2882c
DESCRIPTION: Set-Up Engine Primitive Filter Control
Field Name
Bits
Default
Description
TRIANGLE_FILTER_DISABLE
0
none
for triangle primitive type, disable primitive filters.
LINE_FILTER_DISABLE
1
none
for line primitive type, disable primitive filters.
POINT_FILTER_DISABLE
2
none
for point primitive type, disable primitive filters.
RECTANGLE_FILTER_DISABLE 3
none
for rectangle primitive type, disable primitive filters.
TRIANGLE_EXPAND_ENA
4
none
for triangle primitive type, expand primitive bounding
box for prim filters.
LINE_EXPAND_ENA
5
none
for line primitive type, expand primitive bounding box
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for prim filters.
POINT_EXPAND_ENA
6
none
for point primitive type, expand primitive bounding box
for prim filters.
RECTANGLE_EXPAND_ENA
7
none
for rectangle primitive type, expand primitive bounding
box for prim filters.
PRIM_EXPAND_CONSTANT
15:8
none
constant [4.4] to expand each edge of bounding box
before prim filter test.
PA:PA_SU_SC_MODE_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28814
DESCRIPTION: SU/SC Controls for Facedness Culling, Polymode, Polygon Offset, and various Enables
Field Name
Bits
Default
Description
CULL_FRONT
0
none
Enable for front-face culling.
POSSIBLE VALUES:
00 - Do not cull front-facing triangles.
01 - Cull front-facing triangles.
CULL_BACK
1
none
Enable for back-face culling.
POSSIBLE VALUES:
00 - Do not cull back-facing triangles.
01 - Cull back-facing triangles.
FACE
2
none
X-Ored with cross product sign to determine positive
facing
POSSIBLE VALUES:
00 - Positive cross product is front (CCW).
01 - Negative cross product is front (CW).
POLY_MODE
4:3
none
Polygon mode enable.
POSSIBLE VALUES:
00 - Disable poly mode (render triangles).
01 - Dual mode (send 2 sets of 3 polys with
specified poly type).
02 - Reserved
POLYMODE_FRONT_PTYPE
7:5
none
Specifies how to render front-facing polygons.
POSSIBLE VALUES:
00 - Draw points.
01 - Draw lines.
02 - Draw triangles.
03 - Reserved 3 - 7.
POLYMODE_BACK_PTYPE
10:8
none
Specifies how to render back-facing polygons.
POSSIBLE VALUES:
00 - Draw points.
01 - Draw lines.
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02 - Draw triangles.
03 - Reserved 3 - 7.
POLY_OFFSET_FRONT_ENABLE 11
none
Enables front facing polygon`s offset.
POSSIBLE VALUES:
00 - Disable front offset.
01 - Enable front offset.
POLY_OFFSET_BACK_ENABLE
12
none
Enables back facing polygon`s offset.
POSSIBLE VALUES:
00 - Disable back offset.
01 - Enable back offset.
POLY_OFFSET_PARA_ENABLE
13
none
Enables polygon offset for non-triangle primitives.
POSSIBLE VALUES:
00 - Disable front offset for parallelograms.
01 - Enable front offset for parallelograms.
VTX_WINDOW_OFFSET_ENABLE 16
none
Enables addition of PA_SC_WINDOW_OFFSET
values to vertex data.
PROVOKING_VTX_LAST
none
Defines which vertex of a primitive is used for attribute
components when flat shading is enabled
19
POSSIBLE VALUES:
00 - 0 = First Vtx (D3D)
01 - 1 = Last Vtx (OGL)
PERSP_CORR_DIS
20
none
Disables perspective correction for all attributes
MULTI_PRIM_IB_ENA
21
none
Enables multiple primitive sets to be placed in a single
index buffer, separated by RESET_INDX indices
PA:PA_SU_VTX_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28be4
DESCRIPTION: Miscellaneous SU Control
Field Name
Bits
Default
Description
PIX_CENTER
0
none
Specifies where the pixel center of the incoming vertex
is. The drawing engine itself has pixel centers @ 0.5, so
if this bit is `0`, 0.5 will be added to the X,Y coordinates
to move the incoming vertex onto our internal grid.
POSSIBLE VALUES:
00 - 0 = Pixel Center @ 0.0 (D3D)
01 - 1 = Pixel Center @ 0.5 (OGL)
ROUND_MODE
2:1
none
Controls conversion of X,Y coordinates from IEEE to
fixed-point
POSSIBLE VALUES:
00 - 0 = Truncate (OGL)
01 - 1 = Round
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02 - 2 = Round to Even (D3D)
03 - 3 = Round to Odd
QUANT_MODE
5:3
none
Controls conversion of X,Y coordinates from IEEE to
fixed-point
POSSIBLE VALUES:
00 - 0 = 1/16th ( 4 fractional bits)
01 - 1 = 1/8th ( 3 fractional bits)
02 - 2 = 1/4th ( 2 fractional bits)
03 - 3 = 1/2 ( 1 fractional bit)
04 - 4 = 1 ( 0 fractional bits)
05 - 5 = 1/256th ( 8 fractional bits)
06 - 6 = 1/1024th (10 fractional bits)
07 - 7 = 1/4096th (12 fractional bits)
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3. General Shader Registers
SQ:SQ_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c00
DESCRIPTION: (1-state) SQ config options. The graphics pipe must be idle to change these.
Field Name
Bits
Default
Description
VC_ENABLE
0
0x0
Vertex Cache (VC) is present; set to zero to disable VC.
When VC is disabled, all vertex fetches go through the
TC rather than VC regardless of the instruction bit which
selects TC/VC, and also disables global data sharing.
EXPORT_SRC_C
1
0x1
Export mode: 0=do not allow tex/vtx fetch to use src-c
export; 1 = allow opportunistic src-c tex/vtx exports.
GFX_PRIO
3:2
0x0
A value between 0 and 3 indicating the relative priority
of waves from the GFX ring. A higher value gives higher
priority.
CS1_PRIO
5:4
0x0
A value between 0 and 3 indicating the relative priority
of waves from the CS1 ring. A higher value gives higher
priority.
CS2_PRIO
7:6
0x0
A value between 0 and 3 indicating the relative priority
of waves from the CS2 ring. A higher value gives higher
priority.
SQ:SQ_ESGS_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c40
DESCRIPTION: (1-state) Memory base address of the ES->GS ring buffer (256-byte aligned)
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_ESGS_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28900
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the ES->GS ring buffer (in DWORDs).
Itemsize is the true count, not count-1 and represents [0..255] dwords.
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_ESGS_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c44
DESCRIPTION: (1-state) Memory region size address of the ES->GS ring buffer (in units of 256-bytes). For
multi-SE chips, the buffer size should be a multiple of 512-bytes because it is automatically split by hardware. True
size, not size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
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SQ:SQ_ESTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c50
DESCRIPTION: (1-state) Memory base address of the ES Temp buffer (256-byte aligned). On multi-SE chips, each
SE needs to have an unique ring base.
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_ESTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28908
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the ES Temp buffer (in DWORDs).
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_ESTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c54
DESCRIPTION: (1-state) Memory region size address of the ES Temp buffer (in units of 256-bytes). True size, not
size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_EX_ALLOC_TABLE_SLOTS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8e48
DESCRIPTION: Maximum number of export allocation table entries the SQ will use.
Field Name
Bits
Default
Description
PIX_SLOTS
6:0
0x20
Color buffer export.
POS_SLOTS
14:8
0x10
Position export.
SMX_SLOTS
22:16
0x20
Memory export and RAT.
SQ:SQ_GLOBAL_GPR_RESOURCE_MGMT_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c10
DESCRIPTION: Partition global gprs per shader stage. Field values are addresses, not counts and may overlap
Field Name
Bits
Default
Description
PS_GGPR_BASE
7:0
0x0
PS global gpr base address
VS_GGPR_BASE
15:8
0x0
VS global gpr base address
GS_GGPR_BASE
23:16
0x0
GS global gpr base address
ES_GGPR_BASE
31:24
0x0
ES global gpr base address
SQ:SQ_GLOBAL_GPR_RESOURCE_MGMT_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c14
DESCRIPTION: Partition global gprs per shader stage. Field values are addresses, not counts and may overlap
Field Name
Bits
Default
Description
HS_GGPR_BASE
7:0
0x0
HS global gpr base address
LS_GGPR_BASE
15:8
0x0
LS global gpr base address
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CS_GGPR_BASE
23:16
0x0
April 26, 2011
CS global gpr base address
SQ:SQ_GPR_RESOURCE_MGMT_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c04
DESCRIPTION: (1-state) Defines how GPR space is divided among the shader stages. All ES, VS, and GS work
must be flushed before writing this register. PS work must also be flushed prior to changing NUM_PS_GPRS or
NUM_CLAUSE_TEMP_GPRS.
Field Name
Bits
Default
Description
NUM_PS_GPRS
7:0
0x0
Number of GPRs (per SIMD) assigned to the PS stage
[0..255].
NUM_VS_GPRS
23:16
0x0
Number of GPRs (per SIMD) assigned to the VS stage
[0..255].
NUM_CLAUSE_TEMP_GPRS
31:28
0x0
Number of GPRs reserved for clause temporaries [0-15].
This is the number of GPRs available to a single thread,
so the hardware will reserve twice this many physical
registers (for even & odd clauses).
SQ:SQ_GSTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c58
DESCRIPTION: (1-state) Memory base address of the GS Temp buffer (256-byte aligned). On multi-SE chips,
each SE needs to have an unique ring base.
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_GSTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2890c
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the GS Temp buffer (in DWORDs).
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_GSTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c5c
DESCRIPTION: (1-state) Memory region size address of the GS Temp buffer (in units of 256-bytes). True size, not
size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_GSVS_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c48
DESCRIPTION: (1-state) Memory base address of the GS->ES ring buffer (256-byte aligned)
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
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SQ:SQ_GSVS_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28904
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the GS->ES ring buffer (in DWORDs). This
defines the max number of dwords a single invocation of the GS can output to the ring buffer: [0..16363] dwords.
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_GSVS_RING_OFFSET_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2892c
DESCRIPTION: Offset for Stream1 from SQ_GSVS_RING_BASE
Field Name
Bits
Default
Description
OFFSET
14:0
0x0
In Dwords. Maximum output of one prim for stream_0
1024 * 32 dwords = 32k
SQ:SQ_GSVS_RING_OFFSET_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28930
DESCRIPTION: Offset for Stream2 from SQ_GSVS_RING_BASE
Field Name
Bits
Default
Description
OFFSET
14:0
0x0
In Dwords. Maximum output of one prim for stream_0 +
Maximum output of one prim for stream_1 2*1024 * 32
dwords = 64k
SQ:SQ_GSVS_RING_OFFSET_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28934
DESCRIPTION: Offset for Stream3 from SQ_GSVS_RING_BASE
Field Name
Bits
Default
Description
OFFSET
14:0
0x0
In Dwords. Maximum output of one prim for stream_0 +
Maximum output of one prim for stream_1 + Maximum
output of one prim for stream_2 2*1024 * 32 dwords =
96k
SQ:SQ_GSVS_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c4c
DESCRIPTION: (1-state) Memory region size address of the GS->ES ring buffer (in units of 256-bytes). True size,
not size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_GS_VERT_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2891c
DESCRIPTION: (8-state) Space allocated to a single GS output vertex in GS Temp Buffer. This defines the size of
a single vertex output by the GS. Multiple vertices can be output so long as the total output size does not exceed
SQ_GSVS_RING_ITEMSIZE.
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
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SQ:SQ_GS_VERT_ITEMSIZE_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28920
DESCRIPTION: Offset for vert itemsize
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
This defines the size in dwords of a single vertex output
by the GS to stream 1. (used by SX, not SQ)
SQ:SQ_GS_VERT_ITEMSIZE_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28924
DESCRIPTION: Offset for vert itemsize
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
This defines the size in dwords of a single vertex output
by the GS to stream 2. (used by SX, not SQ)
SQ:SQ_GS_VERT_ITEMSIZE_3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28928
DESCRIPTION: Offset for vert itemsize
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
This defines the size in dwords of a single vertex output
by the GS to stream 3. (used by SX, not SQ)
SQ:SQ_HSTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8e18
DESCRIPTION: (1-state) Memory base address of the HS Temp buffer (256-byte aligned). On multi-SE chips,
each SE needs to have an unique ring base.
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_HSTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28834
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the HS Temp buffer (in DWORDs).
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_HSTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8e1c
DESCRIPTION: (1-state) Memory region size address of the HS Temp buffer (in units of 256-bytes). True size, not
size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
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SQ:SQ_LSTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8e10
DESCRIPTION: (1-state) Memory base address of the LS/CS Temp buffer (256-byte aligned). On multi-SE chips,
each SE needs to have an unique ring base. A separate value is stored at this address for each CP ring.
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_LSTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28830
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the LS/CS Temp buffer (in DWORDs).
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_LSTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8e14
DESCRIPTION: (1-state) Memory region size address of the LS/CS Temp buffer (in units of 256-bytes). True size,
not size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_PSTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c68
DESCRIPTION: (1-state) Memory base address of the PS Temp buffer (256-byte aligned). On multi-SE chips, each
SE needs to have an unique ring base.
Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
SQ:SQ_PSTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28914
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the PS Temp buffer (in DWORDs)
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_PSTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c6c
DESCRIPTION: (1-state) Memory region size address of the PS Temp buffer (in units of 256-bytes). True size, not
size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_VSTMP_RING_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c60
DESCRIPTION: (1-state) Memory base address of the VS Temp buffer (256-byte aligned). On multi-SE chips, each
SE needs to have an unique ring base.
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Field Name
Bits
Default
Description
MEM_BASE
31:0
0x0
Format is [39:8]
April 26, 2011
SQ:SQ_VSTMP_RING_ITEMSIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28910
DESCRIPTION: (8-state) Space allocated to a single pixel/vertex in the VS Temp buffer (in DWORDs)
Field Name
Bits
Default
Description
ITEMSIZE
14:0
0x0
Format is [16:2]
SQ:SQ_VSTMP_RING_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8c64
DESCRIPTION: (1-state) Memory region size address of the VS Temp buffer (in units of 256-bytes). True size, not
size -1. Setting to zero disables.
Field Name
Bits
Default
Description
MEM_SIZE
31:0
0x0
Format is [39:8]
SQ:SQ_VTX_BASE_VTX_LOC · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3cff0
DESCRIPTION: (64-state) Vertex fetch base location. can be used as an index offset for vertex fetch. one entry per
state (up to 64 states).
Field Name
Bits
Default
Description
OFFSET
31:0
0x0
Vertex Base location for vertex fetching
SQ:SQ_VTX_SEMANTIC_[0-31] · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x28380-0x283fc
DESCRIPTION: (8-state) Vertex Fetch Semantic Name. Used for semantic-based vertex fetches. 32 entries
provided (8 states). The address in which the semantic occurs dictates which GPR the named element goes to in the
vertex shader. Note that the hardware does not interpret this value, other than simply compare these 8 bits versus
the 8-bit semantic in the vertex fetch instruction. These registers are readable/writable.
Field Name
Bits
Default
Description
SEMANTIC_ID
7:0
0x0
8-bit semantic id
SQ:SQ_VTX_SEMANTIC_CLEAR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x288f0
DESCRIPTION: (8-state) This register is used to clear the contents of the vertex semantic table. Entries can be
cleared independently -- each has one bit in this register to clear or leave alone. This register is write-only (not
readable).
Field Name
Bits
Default
Description
CLEAR
31:0
0x0
clear or preserve table entry
SQ:SQ_VTX_START_INST_LOC · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3cff4
DESCRIPTION: (64-state) Vertex fetch instance offset. can be used as an index offset for vertex fetch. one entry
per state (up to 64 states, but probably less than base_vtx_loc).
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Field Name
Bits
Default
Description
OFFSET
31:0
0x0
Instance start location for vertex fetching
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4. Shader Instructions
SQ_MICRO:SQ_CF_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 0. This word is the default representation for CF instructions.
Field Name
Bits
Default
Description
ADDR
23:0
none
Bits [26:3] of the byte offset (producing a QUAD-wordaligned value) of the clause to execute (clause
instructions only). Bits [26:3] of the byte offset
(producing a QUAD-word-aligned value) of the control
flow address to jump to (instructions that can jump).
Offsets are relative to the byte address specified by
PGM_START. Texture and Vertex clauses must start on
16-byte aligned addresses.
JUMPTABLE_SEL
26:24
none
Select the source of the offset used for
CF_INST_JUMPTABLE instructions. Not meaningful
for other instructions.
POSSIBLE VALUES:
00 - SQ_CF_JUMPTABLE_SEL_CONST_A: use
element A of jumptable constant selected by
CF_CONST.
01 - SQ_CF_JUMPTABLE_SEL_CONST_B: use
element B of jumptable constant selected by
CF_CONST.
02 - SQ_CF_JUMPTABLE_SEL_CONST_C: use
element C of jumptable constant selected by
CF_CONST.
03 - SQ_CF_JUMPTABLE_SEL_CONST_D: use
element D of jumptable constant selected by
CF_CONST.
04 - SQ_CF_JUMPTABLE_SEL_INDEX_0: use
index0.
05 - SQ_CF_JUMPTABLE_SEL_INDEX_1: use
index1.
SQ_MICRO:SQ_CF_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 1. This word is the default representation for CF instructions.
Field Name
Bits
Default
Description
POP_COUNT
2:0
none
Specify the number of entries to pop from the stack, in
[0..7]. Only used by certain CF instructions that pop the
branch-loop stack. May be zero, to indicate no pop
operation.
CF_CONST
7:3
none
Specify the CF constant to use for flow control
statements. For LOOP/ENDLOOP, this specifies the
integer constant to use for the loop counter, loop index
initializer, and increment. For instructions using COND,
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this specifies the index of the boolean constant to use.
COND
9:8
none
Specifies how to evaluate the condition test for each
pixel. Not used by all instructions. May reference
CF_CONST.
POSSIBLE VALUES:
00 - SQ_CF_COND_ACTIVE: condition test passes
for active pixels.
01 - SQ_CF_COND_FALSE: condition test fails for
all pixels.
02 - SQ_CF_COND_BOOL: condition test passes iff
pixel is active and boolean referenced by CF_CONST is
true.
03 - SQ_CF_COND_NOT_BOOL: condition test
passes iff pixel is active and boolean referenced by
CF_CONST is false.
COUNT
15:10
none
Number of instructions to execute in the clause, minus
one (clause instructions only). This is interpreted as the
number of instruction slots in the range [1,16]. For
CALL instruction: Amount to increment call nesting
counter by when executing a CALL statement; a CALL
is skipped if the current nesting depth + call_count > 32.
This field is interpreted in the range [0,31]. For
EMIT,CUT,EMIT-CUT, bits[1:0] are the stream-id. For
SET_PRIORITY, this is the new priority value.
VALID_PIXEL_MODE
20
none
If set, execute this instruction/clause as if invalid pixels
are inactive. Caution: VALID_PIXEL_MODE is not the
`default` mode; this bit should be set to 0 by default. Set
this only in PS stage.
CF_INST
29:22
none
Type of instruction to evaluate in CF. For this encoding,
CF_INST must be set to one of the following values.
POSSIBLE VALUES:
00 - SQ_CF_INST_NOP: perform no operation.
01 - SQ_CF_INST_TC: execute fetch clause, through
the texture cache. CF_COND=ACTIVE is required.
02 - SQ_CF_INST_VC: execute vertex fetch clause,
through the vertex-cache (if exists; else sent to texturecache). CF_COND=ACTIVE is required.
03 - SQ_CF_INST_GDS: execute a Global Data
Share clause (GDS, TF (tesselation factor)).
CF_COND=ACTIVE is required.
04 - SQ_CF_INST_LOOP_START: execute DX9
loop start instruction (push onto loop stack if loop body
executes).
05 - SQ_CF_INST_LOOP_END: execute DX9 loop
end instruction (pop loop stack if loop is finished).
06 - SQ_CF_INST_LOOP_START_DX10: execute
DX10 loop start instruction (push onto loop stack if loop
body executes).
07 - SQ_CF_INST_LOOP_START_NO_AL: same
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as LOOP_START but don`t push AL onto stack or
update AL.
08 - SQ_CF_INST_LOOP_CONTINUE: execute
continue statement (jump to end of loop if all pixels
ready to continue).
09 - SQ_CF_INST_LOOP_BREAK: execute a break
statement (pop loop stack if all pixels ready to break).
10 - SQ_CF_INST_JUMP: execute jump statement
(may be conditional).
11 - SQ_CF_INST_PUSH: push current per-pixel
active state onto stack OR jump and pop if no items
would be active.
13 - SQ_CF_INST_ELSE: execute else statement
(may be conditional) OR jump if no items would be
active.
14 - SQ_CF_INST_POP: pop current per-pixel state
from the stack. jump if no pixels are enabled after pop.
18 - SQ_CF_INST_CALL: execute subroutine call
instruction (push onto address stack).
19 - SQ_CF_INST_CALL_FS: call fetch shader. The
address to call is stored in a state register in SQ.
20 - SQ_CF_INST_RETURN: execute subroutine
return instruction (pop address stack). Pair with
CF_INST_CALL only.
21 - SQ_CF_INST_EMIT_VERTEX: signal that GS
has finished exporting a vertex to memory.
CF_COND=ACTIVE is required. Stream-ID is in the 2
lsb`s of the COUNT field.
22 - SQ_CF_INST_EMIT_CUT_VERTEX: emit a
vertex and an end of primitive strip marker. The next
emitted vertex will start a new primitive strip.
CF_COND=ACTIVE is required. Stream-ID is in the 2
lsb`s of the COUNT field.
23 - SQ_CF_INST_CUT_VERTEX: emit an end of
primitive strip marker. The next emitted vertex will start
a new primitive strip. CF_COND=ACTIVE is required.
Stream-ID is in the 2 lsb`s of the COUNT field.
24 - SQ_CF_INST_KILL: kill pixels that pass the
condition test (may be conditional). No jump is taken.
26 - SQ_CF_INST_WAIT_ACK: wait for write-acks
or fetch-read-acks to return before proceeding. wait if
outstanding_acks > (value of ADDR field). When using
a nonzero value, be aware that TC_ACK requests may
return out of order with respect to VC_ACK requests.
For optimal performance, BARRIER_BEFORE should
never be set for this instruction.
27 - SQ_CF_INST_TC_ACK: execute fetch or
constant fetch clause, with ack. CF_COND=ACTIVE is
required. All previous TC/VC/GDS requests must have
completed if this instruction is issued without
BARRIER_BEFORE set.
28 - SQ_CF_INST_VC_ACK: execute vertex fetch
clause through the vertex cache (if it exists; else uses
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texture cache), with ack. CF_COND=ACTIVE is
required. All previous TC/VC/GDS requests must have
completed if this instruction is issued without
BARRIER_BEFORE set.
29 - SQ_CF_INST_JUMPTABLE: execute a jump
through a jump table. This instruction is followed by a
series of up to 256 jump instructions forming the jump
table. The index into the table comes from either a loopconstant, or a GPR via the index registers. The
instruction AFTER the last jump table entry should be
indicated by the ADDR field. If no pixels are enabled
after the condition test, then execution will continue at
this address.
30 - SQ_CF_INST_GLOBAL_WAVE_SYNC:
synchronize waves across the chip (including multiple
simds and multiple shader engines. Details TBD.
31 - SQ_CF_INST_HALT: halt this thread
executions. The only way to restart execution is to write
this instruction using SQ_WAVE0_CF_INST[01] once
the hardware is otherwise idle.
32 - SQ_CF_INST_END: End the shader. This is the
only bit for which PROGRAM_END can be set
(although PROGRAM_END will be deprecated shortly)
33 - SQ_CF_INST_LDS_DEALLOC: Deallocate the
LDS resources.
34 - SQ_CF_INST_PUSH_WQM: push current perpixel active state onto stack and apply whole quad mode
OR jump if no items would be active.
35 - SQ_CF_INST_POP_WQM: pop per-pixel state
added to the stack using PUSH_WQM. POP_COUNT
must be 1. Jump if no pixels are enabled after pop.
36 - SQ_CF_INST_ELSE_WQM: execute else
statement (may be conditional) OR jump if no items
would be active.
37 - SQ_CF_INST_JUMP_ANY: execute jump
statement (may be conditional).
38 - SQ_CF_INST_REACTIVATE: Re-activate all
valid threads on the top of the current branch stack. Do
not do this inside a loop or wqm frame.
39 - SQ_CF_INST_REACTIVATE_WQM: Reactivate all valid quads on the top of the current branch
stack. Do not do this inside a loop or wqm frame. Pixel
shaders only.
40 - SQ_CF_INST_INTERRUPT: Trigger an
interrupt. The interrupt data will include CF_IDX0,
CF_IDX1, the VMID, the CP RINGID and the shader
engine id.
41 - SQ_CF_INST_INTERRUPT_AND_SLEEP:
Trigger an interrupt and sleep. The interrupt data will
include CF_IDX0, CF_IDX1, the VMID, the CP
RINGID and the shader engine id
42 - SQ_CF_INST_SET_PRIORITY: Set the priority
to the count value.
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BARRIER
31
none
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If set, all prior CF instructions/clauses must complete
before this instruction/clause executes. If not set, this
instruction/clause may run in parallel with prior
instructions.
SQ_MICRO:SQ_CF_ENCODING_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 1. This is a READ-ONLY register used to help decode the CF
instruction.
Field Name
Bits
Default
Description
ENCODING
29:28
none
READ-ONLY field used to determine the encoding used.
POSSIBLE VALUES:
00 - SQ_CF_ENCODING_INST_CF: `b00: use
SQ_CF_WORD encoding.
01 SQ_CF_ENCODING_INST_ALLOC_EXPORT: `b01:
use SQ_CF_ALLOC_EXPORT_WORD encoding.
02 - SQ_CF_ENCODING_INST_ALU0: `b10: use
SQ_CF_ALU_WORD encoding.
03 - SQ_CF_ENCODING_INST_ALU1: `b11: use
SQ_CF_ALU_WORD encoding.
SQ_MICRO:SQ_CF_ALU_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 0. This word is used by ALU clause instructions.
Field Name
Bits
Default
Description
ADDR
21:0
none
Bits [24:3] of the byte offset (producing a QUAD-wordaligned value) of the clause to execute. The offset is
relative to the byte address specified by PGM_START.
KCACHE_BANK0
25:22
none
Bank (constant buffer number) for first set of locked
cache lines.
KCACHE_BANK1
29:26
none
Bank (constant buffer number) for second set of locked
cache lines.
KCACHE_MODE0
31:30
none
Mode for first set of locked cache lines.
POSSIBLE VALUES:
00 - SQ_CF_KCACHE_NOP: do not lock any cache
lines.
01 - SQ_CF_KCACHE_LOCK_1: lock cache line
[bank][addr].
02 - SQ_CF_KCACHE_LOCK_2: lock cache lines
[bank][addr] and [bank][addr+1].
03 - SQ_CF_KCACHE_LOCK_LOOP_INDEX:
lock cache lines [bank][loop/16+addr] and
[bank][loop/16+addr+1], where loop is current loop
index.
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SQ_MICRO:SQ_CF_ALU_WORD0_EXT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 0. This word is used by extended ALU clause instructions.
Field Name
Bits
KCACHE_BANK_INDEX_MODE0 5:4
Default
Description
none
Bank relative offset select. Add the indicated offset to
the constant buffer bank number in KCACHE_BANK0.
Indexed locks of banks 14 and 15 will be ignored.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
KCACHE_BANK_INDEX_MODE1 7:6
none
Bank relative offset select. Add the indicated offset to
the constant buffer bank number in KCACHE_BANK1.
Indexed locks of banks 14 and 15 will be ignored.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
KCACHE_BANK_INDEX_MODE2 9:8
none
Bank relative offset select. Add the indicated offset to
the constant buffer bank number in KCACHE_BANK2.
Indexed locks of banks 14 and 15 will be ignored.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
KCACHE_BANK_INDEX_MODE3 11:10
none
Bank relative offset select. Add the indicated offset to
the constant buffer bank number in KCACHE_BANK3.
Indexed locks of banks 14 and 15 will be ignored.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
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03 - SQ_CF_INVALID: invalid
KCACHE_BANK2
25:22
none
Bank (constant buffer number) for third set of locked
cache lines.
KCACHE_BANK3
29:26
none
Bank (constant buffer number) for fourth set of locked
cache lines.
KCACHE_MODE2
31:30
none
Mode for third set of locked cache lines.
POSSIBLE VALUES:
00 - SQ_CF_KCACHE_NOP: do not lock any
cache lines.
01 - SQ_CF_KCACHE_LOCK_1: lock cache line
[bank][addr].
02 - SQ_CF_KCACHE_LOCK_2: lock cache lines
[bank][addr] and [bank][addr+1].
03 - SQ_CF_KCACHE_LOCK_LOOP_INDEX:
lock cache lines [bank][loop/16+addr] and
[bank][loop/16+addr+1], where loop is current loop
index.
SQ_MICRO:SQ_CF_ALU_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 1. This word is used by ALU clause instructions.
Field Name
Bits
Default
Description
KCACHE_MODE1
1:0
none
Mode for second set of locked cache lines.
POSSIBLE VALUES:
00 - SQ_CF_KCACHE_NOP: do not lock any cache
lines.
01 - SQ_CF_KCACHE_LOCK_1: lock cache line
[bank][addr].
02 - SQ_CF_KCACHE_LOCK_2: lock cache lines
[bank][addr] and [bank][addr+1].
03 - SQ_CF_KCACHE_LOCK_LOOP_INDEX:
lock cache lines [bank][loop/16+addr] and
[bank][loop/16+addr+1], where loop is current loop
index.
KCACHE_ADDR0
9:2
none
Constant buffer address for first set of locked cache lines.
In units of cache lines where a line holds 16 128-bit
constants (byte addr[15:8]).
KCACHE_ADDR1
17:10
none
Constant buffer address for second set of locked cache
lines
COUNT
24:18
none
Number of instructions to execute in the clause, minus
one. This is interpreted as the number of instruction slots
(64-bit slots) in the range [1,128].
ALT_CONST
25
none
if set, uses constants from alternate thread type: ps->vs,
vs->gs, gs->vs, es->gs (note that es and vs share
constants). Has no effect on HS, LS, CS.
CF_INST
29:26
none
Type of ALU instruction to evaluate in CF. For this
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encoding, CF_INST must be set to one of the following
values.
POSSIBLE VALUES:
08 - SQ_CF_INST_ALU: each PRED_SET updates
the active state but does not update the stack.
09 - SQ_CF_INST_ALU_PUSH_BEFORE: do
CF_PUSH; then CF_INST_ALU
10 - SQ_CF_INST_ALU_POP_AFTER: do
CF_INST_ALU; then do CF_INST_POP.
11 - SQ_CF_INST_ALU_POP2_AFTER: do
CF_INST_ALU; then do CF_INST_POP twice.
12 - SQ_CF_INST_ALU_EXTENDED: ALU clause
instruction extension - used for indexed constant buffers
and 4 constant buffers per clause. This CF is the first half
of the alu instruction pair. Defines constant buffer 2 and
3, and index-select for all 4 constant buffers
13 - SQ_CF_INST_ALU_CONTINUE: each
PRED_SET causes a continue operation on the masked
pixels. Equivalent to CF_INST_PUSH; CF_INST_ALU;
CF_INST_ELSE; CF_INST_CONTINUE; CF_POP.
14 - SQ_CF_INST_ALU_BREAK: each PRED_SET
causes a break operation on the masked pixels.
Equivalent to CF_INST_PUSH; CF_INST_ALU;
CF_INST_ELSE; CF_INST_CONTINUE; CF_POP.
15 - SQ_CF_INST_ALU_ELSE_AFTER: do
CF_INST_ALU; then do CF_INST_ELSE.
WHOLE_QUAD_MODE
30
none
Indicates that all pixels in a quad containing an active,
valid pixel should be considered active for this
instruction. Set this only in PS stage.
BARRIER
31
none
If set, all prior CF instructions/clauses must complete
before this instruction/clause executes. If not set, this
instruction/clause may run in parallel with prior
instructions.
SQ_MICRO:SQ_CF_ALU_WORD1_EXT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 1. This word is used by extended ALU clause instructions.
Field Name
Bits
Default
Description
KCACHE_MODE3
1:0
none
Mode for fourth set of locked cache lines.
POSSIBLE VALUES:
00 - SQ_CF_KCACHE_NOP: do not lock any cache
lines.
01 - SQ_CF_KCACHE_LOCK_1: lock cache line
[bank][addr].
02 - SQ_CF_KCACHE_LOCK_2: lock cache lines
[bank][addr] and [bank][addr+1].
03 - SQ_CF_KCACHE_LOCK_LOOP_INDEX: lock
cache lines [bank][loop/16+addr] and
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[bank][loop/16+addr+1], where loop is current loop
index.
KCACHE_ADDR2
9:2
none
Constant buffer address for third set of locked cache lines
KCACHE_ADDR3
17:10
none
Constant buffer address for fourth set of locked cache
lines
CF_INST
29:26
none
Type of ALU instruction to evaluate in CF. Must be
SQ_CF_INST_ALU_EXTENDED
POSSIBLE VALUES:
08 - SQ_CF_INST_ALU: each PRED_SET updates
the active state but does not update the stack.
09 - SQ_CF_INST_ALU_PUSH_BEFORE: do
CF_PUSH; then CF_INST_ALU
10 - SQ_CF_INST_ALU_POP_AFTER: do
CF_INST_ALU; then do CF_INST_POP.
11 - SQ_CF_INST_ALU_POP2_AFTER: do
CF_INST_ALU; then do CF_INST_POP twice.
12 - SQ_CF_INST_ALU_EXTENDED: ALU clause
instruction extension - used for indexed constant buffers
and 4 constant buffers per clause. This CF is the first half
of the alu instruction pair. Defines constant buffer 2 and
3, and index-select for all 4 constant buffers
13 - SQ_CF_INST_ALU_CONTINUE: each
PRED_SET causes a continue operation on the masked
pixels. Equivalent to CF_INST_PUSH; CF_INST_ALU;
CF_INST_ELSE; CF_INST_CONTINUE; CF_POP.
14 - SQ_CF_INST_ALU_BREAK: each PRED_SET
causes a break operation on the masked pixels.
Equivalent to CF_INST_PUSH; CF_INST_ALU;
CF_INST_ELSE; CF_INST_CONTINUE; CF_POP.
15 - SQ_CF_INST_ALU_ELSE_AFTER: do
CF_INST_ALU; then do CF_INST_ELSE.
BARRIER
31
none
If set, all prior CF instructions/clauses must complete
before this instruction/clause executes. If not set, this
instruction/clause may run in parallel with prior
instructions.
SQ_MICRO:SQ_CF_ALLOC_EXPORT_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Word 0 of the control flow instruction for alloc/export.
Field Name
Bits
Default
Description
ARRAY_BASE
12:0
none
For scratch input/output, this is the base address of the
array in multiples of 4 dwords [0,32764].
For stream/ring output, this is the base addess of the
array in multiples of 1 dword [0,8191].
For pixel/z output, this is the index of the first export
(framebuffer 0..7; computed Z: 61).
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For parameter output, this is the parameter index of the
first export [0,31].
For position output, this is the position index of the first
export [60,63].
TYPE
14:13
none
Type of allocation/export. In the table below, the first
enumeration value listed (PIXEL, POS, PARAM) is used
with CF_INST_EXPORT*. The second enumeration
value listed (WRITE, WRITE_IND, WRITE_ACK,
WRITE_IND_ACK) is used with CF_INST_MEM*.
POSSIBLE VALUES:
00 - SQ_EXPORT_PIXEL: write pixel.
SQ_EXPORT_WRITE: write to memory buffer.
01 - SQ_EXPORT_POS: write position.
SQ_EXPORT_WRITE_IND: write to memory buffer,
use offset in INDEX_GPR.
02 - SQ_EXPORT_PARAM: write parameter cache.
SQ_EXPORT_WRITE_ACK: write to memory buffer,
request an ACK when write is committed to memory.
For RAT, ack guarantees return value has been written to
memory. Warning: acknowledges for cached-RAT may
return out-of-order with respect to other exports
(including cacheless-RAT instructions).
03 - Unused for SX exports.
SQ_EXPORT_WRITE_IND_ACK: write to memory
buffer with offset in INDEX_GPR, get an ACK when
done. For RAT, ack guarantees return value has been
written to memory. Warning: acknowledges for cachedRAT instructions may return out-of-order with respect to
other exports ((including cacheless-RAT instructions).
RW_GPR
21:15
none
GPR register read data from
RW_REL
22
none
Indicates whether GPR is an absolute address, or relative
to the loop index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
INDEX_GPR
29:23
none
For any indexed export, this GPR contains an index that
will be used in the computation for determining the
address of the first export. The index is multipled by
(ELEM_SIZE + 1). Only the X component is used (other
components ignored, no swizzle allowed).
ELEM_SIZE
31:30
none
Number of DWORDs per element, minus one. This field
is interpreted as a value in [1,2,4] (3 not supported). The
value from INDEX_GPR and the loop counter are
multiplied by this factor, if applicable. Also,
BURST_COUNT is multiplied by this factor for
CF_INST_MEM*. This field is ignored for
CF_INST_EXPORT*. Normally, ELEMSIZE = 4
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DWORDs for scratch, one DWORD for other types.
SQ_MICRO:SQ_CF_ALLOC_EXPORT_WORD0_RAT · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8dfc
DESCRIPTION: Word 0 of the control flow instruction for alloc/export for RAT mem exports. For all RAT_INSTs
except STORE, the resource format must be UINT32 (STORE can take any format). For all RAT_INST the channel
mask must be 0xF (all channels written).
Field Name
Bits
Default
Description
RAT_ID
3:0
none
RAT surface (MRT) ID
RAT_INST
9:4
none
RAT instruction
POSSIBLE VALUES:
00 - SQ_EXPORT_RAT_INST_NOP: Internal use by
SX only (flush+ack with no opcode).
01 - SQ_EXPORT_RAT_INST_STORE_TYPED: dst =
src - replace with format conversion (any resource format
allowed). This is the only cached RAT opcode that may
write more than 1 dword (up to 4).
02 - SQ_EXPORT_RAT_INST_STORE_RAW: dst =
src (no flushing of denorms). This is the only permitted
opcode for CACHELESS RAT targets, and may write up to
2 dwords (from the X and Y channels) for CACHELESS
targets, but only 1 dword for cached targets
03 SQ_EXPORT_RAT_INST_STORE_RAW_FDENORM: dst
= src (flush denorms to zero).
04 - SQ_EXPORT_RAT_INST_CMPXCHG_INT: dst =
(cmp == dst) ? src : dst. simple bitwise compare.
05 - SQ_EXPORT_RAT_INST_CMPXCHG_FLT: dst =
(cmp == dst) ? src : dst. floating point compare with
denorms.
06 SQ_EXPORT_RAT_INST_CMPXCHG_FDENORM: dst =
(cmp == dst) ? src : dst. flush denorms to zero, float
compare.
07 - SQ_EXPORT_RAT_INST_ADD: dst = src + dst.
non-saturating integer add.
08 - SQ_EXPORT_RAT_INST_SUB: dst = dst - src.
non-saturating integer sub.
09 - SQ_EXPORT_RAT_INST_RSUB: dst = src - dst.
non-saturating reverse subtract.
10 - SQ_EXPORT_RAT_INST_MIN_INT: dst = (src <
dst) ? src : dst. signed.
11 - SQ_EXPORT_RAT_INST_MIN_UINT: dst = (src
< dst) ? src : dst. unsigned.
12 - SQ_EXPORT_RAT_INST_MAX_INT: dst = (src >
dst) ? src : dst. signed
13 - SQ_EXPORT_RAT_INST_MAX_UINT: dst = (src
> dst) ? src : dst. unsigned
14 - SQ_EXPORT_RAT_INST_AND: dst = dst & src.
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bitwise
15 - SQ_EXPORT_RAT_INST_OR: dst = dst | src.
bitwise
16 - SQ_EXPORT_RAT_INST_XOR: dst = dst ^ src.
bitwise
17 - SQ_EXPORT_RAT_INST_MSKOR: dst = (dst &
~mask) | src
18 - SQ_EXPORT_RAT_INST_INC_UINT: dst = (dst
>= src) ? 0 : dst+1
19 - SQ_EXPORT_RAT_INST_DEC_UINT: dst =
((dst==0 | (dst > src)) ? src : dst-1
32 - SQ_EXPORT_RAT_INST_NOP_RTN: Internal use
by SX only (flush+ack with no opcode). return dword.
34 - SQ_EXPORT_RAT_INST_XCHG_RTN: dst = src
(no flushing of denorms). return dword.
35 SQ_EXPORT_RAT_INST_XCHG_FDENORM_RTN: dst
= src (flush denorms to zero). return float. return float.
36 SQ_EXPORT_RAT_INST_CMPXCHG_INT_RTN: dst =
(cmp == dst) ? src : dst. simple bitwise compare. return
dword.
37 SQ_EXPORT_RAT_INST_CMPXCHG_FLT_RTN: dst =
(cmp == dst) ? src : dst. floating point compare with
denorms. return float.
38 SQ_EXPORT_RAT_INST_CMPXCHG_FDENORM_RTN:
dst = (cmp == dst) ? src : dst. flush denorms to zero, float
compare. return float.
39 - SQ_EXPORT_RAT_INST_ADD_RTN: dst = src +
dst. non-saturating integer add. return dword.
40 - SQ_EXPORT_RAT_INST_SUB_RTN: dst = dst src. non-saturating integer sub. return dword.
41 - SQ_EXPORT_RAT_INST_RSUB_RTN: dst = src dst. non-saturating reverse subtract. return dword.
42 - SQ_EXPORT_RAT_INST_MIN_INT_RTN: dst =
(src < dst) ? src : dst. signed. return dword.
43 - SQ_EXPORT_RAT_INST_MIN_UINT_RTN: dst
= (src < dst) ? src : dst. unsigned. return dword.
44 - SQ_EXPORT_RAT_INST_MAX_INT_RTN: dst =
(src > dst) ? src : dst. signed return dword.
45 - SQ_EXPORT_RAT_INST_MAX_UINT_RTN: dst
= (src > dst) ? src : dst. unsigned return dword.
46 - SQ_EXPORT_RAT_INST_AND_RTN: dst = dst &
src. bitwise return dword.
47 - SQ_EXPORT_RAT_INST_OR_RTN: dst = dst |
src. bitwise return dword.
48 - SQ_EXPORT_RAT_INST_XOR_RTN: dst = dst ^
src. bitwise return dword.
49 - SQ_EXPORT_RAT_INST_MSKOR_RTN: dst =
(dst & ~mask) | src return dword.
50 - SQ_EXPORT_RAT_INST_INC_UINT_RTN: dst =
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(dst >= src) ? 0 : dst+1 return uint.
51 - SQ_EXPORT_RAT_INST_DEC_UINT_RTN: dst
= ((dst==0 | (dst > src)) ? src : dst-1 return uint.
RAT_INDEX_MODE
12:11
none
RAT index select: non-indexed, add idx0 or idx1 to RAT_ID
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the constant
buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
TYPE
14:13
none
Type of allocation/export.
POSSIBLE VALUES:
00 - SQ_EXPORT_PIXEL: write pixel.
SQ_EXPORT_WRITE: write to memory buffer.
01 - SQ_EXPORT_POS: write position.
SQ_EXPORT_WRITE_IND: write to memory buffer, use
offset in INDEX_GPR.
02 - SQ_EXPORT_PARAM: write parameter cache.
SQ_EXPORT_WRITE_ACK: write to memory buffer,
request an ACK when write is committed to memory. For
RAT, ack guarantees return value has been written to
memory. Warning: acknowledges for cached-RAT may
return out-of-order with respect to other exports (including
cacheless-RAT instructions).
03 - Unused for SX exports.
SQ_EXPORT_WRITE_IND_ACK: write to memory buffer
with offset in INDEX_GPR, get an ACK when done. For
RAT, ack guarantees return value has been written to
memory. Warning: acknowledges for cached-RAT
instructions may return out-of-order with respect to other
exports ((including cacheless-RAT instructions).
RW_GPR
21:15
none
GPR register to read data from. Depending on the
RAT_INST opcode, this gpr contains either up to 4 dwords
of data to write, or a dword of source data in the X channel,
a dword return address in the Y channel and a dword of
compare data in the W channel.
RW_REL
22
none
Indicates whether GPR is an absolute address, or relative to
the loop index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
INDEX_GPR
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29:23
none
Select the GPR that holds the buffer address coordinates.
The index is multipled by (ELEM_SIZE + 1). The X, Y and
Z components contain the address of the 1-d, 2-d, 3-d or 2-d
slice address depending on the format of the RAT surface.
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ELEM_SIZE
31:30
none
April 26, 2011
Number of DWORDs per element, minus one. This field is
interpreted as a value in [1,2,4] (3 not supported). The value
from INDEX_GPR and the loop counter are multiplied by
this factor, if applicable. Also, BURST_COUNT is
multiplied by this factor for CF_INST_MEM*. This field is
ignored for CF_INST_EXPORT*. Normally, ELEMSIZE =
4 DWORDs for scratch, one DWORD for other types.
SQ_MICRO:SQ_CF_ALLOC_EXPORT_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Word 1 of the control flow instruction for alloc/export is the bitwise OR of WORD1 |
WORD1_{BUF,SWIZ}. This part contains fields that are always defined.
Field Name
Bits
Default
Description
BURST_COUNT
19:16
none
Number of MRTs, positions, parameters, or logical export
values to allocate and/or export, minus one. This field is
interpreted as a value in [1,16].
VALID_PIXEL_MODE
20
none
If set, do not export data for invalid pixels. Caution:
VALID_PIXEL_MODE is not the `default` mode; this bit
should be set to 0 by default. Note that Pix/Pos/PC
exports use the valid mask and active mask, and memexports use the active mask only. Set this only in PS
stage.
CF_INST
29:22
none
Type of instruction to evaluate in CF. This value MUST
be one of the alloc/export instructions listed below.
POSSIBLE VALUES:
64 - SQ_CF_INST_MEM_STREAM0_BUF0:
perform a memory write on the stream 0, buffer 0.
65 - SQ_CF_INST_MEM_STREAM0_BUF1:
perform a memory write on the stream 0, buffer 1.
66 - SQ_CF_INST_MEM_STREAM0_BUF2:
perform a memory write on the stream 0, buffer 2.
67 - SQ_CF_INST_MEM_STREAM0_BUF3:
perform a memory write on the stream 0, buffer 3.
68 - SQ_CF_INST_MEM_STREAM1_BUF0:
perform a memory write on the stream 1, buffer 0.
69 - SQ_CF_INST_MEM_STREAM1_BUF1:
perform a memory write on the stream 1, buffer 1.
70 - SQ_CF_INST_MEM_STREAM1_BUF2:
perform a memory write on the stream 1, buffer 2.
71 - SQ_CF_INST_MEM_STREAM1_BUF3:
perform a memory write on the stream 1, buffer 3.
72 - SQ_CF_INST_MEM_STREAM2_BUF0:
perform a memory write on the stream 2, buffer 0.
73 - SQ_CF_INST_MEM_STREAM2_BUF1:
perform a memory write on the stream 2, buffer 1.
74 - SQ_CF_INST_MEM_STREAM2_BUF2:
perform a memory write on the stream 2, buffer 2.
75 - SQ_CF_INST_MEM_STREAM2_BUF3:
perform a memory write on the stream 2, buffer 3.
76 - SQ_CF_INST_MEM_STREAM3_BUF0:
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perform a memory write on the stream 3, buffer 0.
77 - SQ_CF_INST_MEM_STREAM3_BUF1:
perform a memory write on the stream 3, buffer 1.
78 - SQ_CF_INST_MEM_STREAM3_BUF2:
perform a memory write on the stream 3, buffer 2.
79 - SQ_CF_INST_MEM_STREAM3_BUF3:
perform a memory write on the stream 3, buffer 3.
80 - SQ_CF_INST_MEM_SCRATCH: perform a
memory write on the scratch buffer.
82 - SQ_CF_INST_MEM_RING: perform a memory
write on the ring buffer.
83 - SQ_CF_INST_EXPORT: export only (not last).
Used for PIXEL, POS, PARAM exports.
84 - SQ_CF_INST_EXPORT_DONE: export only
(last export). Used for PIXEL, POS, PARAM exports.
85 - SQ_CF_INST_MEM_EXPORT: perform a
memory write on the shared buffer .
86 - SQ_CF_INST_MEM_RAT: export to a Random
Access Target - full functionality (via CB).
87 - SQ_CF_INST_MEM_RAT_CACHELESS:
export to a Random Access Target without caching reduced functionality (via DB).
88 - SQ_CF_INST_MEM_RING1: write to ring 1
(currently only applies to GSVS ring).
89 - SQ_CF_INST_MEM_RING2: write to ring 2
(currently only applies to GSVS ring).
90 - SQ_CF_INST_MEM_RING3: write to ring 3
(currently only applies to GSVS ring).
91 - SQ_CF_INST_MEM_EXPORT_COMBINED:
Memory export (scatter), for single-dword exports only.
Combined Address & Data in one export (data = x, data =
y, address = w). Must be non-indexed-write, and no burstwrites.
92 SQ_CF_INST_MEM_RAT_COMBINED_CACHELESS:
export to a Random Access Target - reduced functionality
(via DB). Combined Address & Data in one export (data
= x, data = y; address = w). Must be non-indexed-write,
and no burst-writes.
93 - SQ_CF_INST_MEM_RAT_COMBINED: export
to a Random Access Target. Combined Address & Data in
one export (data = x, data = y; address = w). Must be nonindexed-write, and no burst-writes.
94 SQ_CF_INST_EXPORT_DONE_END_IS_NEXT: DO
NOT USE; Use CF_INST_EXPORT_DONE instead.
This opcode is for an unimplemented optimization. export
only (last export). Use this iff the very next instruction is
CF_END.
MARK
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30
none
Mark memory write to be acknowledged with the next
write-ack. Only applies to memory writes
(scratch,scatter,etc), not pixel/position/parameter.
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BARRIER
31
none
April 26, 2011
If set, all prior CF instructions/clauses must complete
before this instruction/clause executes. If not set, this
instruction/clause may run in parallel with prior
instructions.
SQ_MICRO:SQ_CF_ALLOC_EXPORT_WORD1_BUF · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8dfc
DESCRIPTION: Word 1 of the control flow instruction. This subencoding is used by alloc/exports for all
input/outputs to scratch/ring/stream/RAT buffers.
Field Name
Bits
Default
Description
ARRAY_SIZE
11:0
none
Array size (elem-size units).
SCRATCH: Represents values [1,4096] when
ELEMSIZE=0, [4,16384] when ELEMSIZE=3.
SCATTER: unused (no effect).
RAT_CACHELESS export, array_size[7:0] carries the
dword stride for burst exports. Stride is 1..256 dwords.
COMP_MASK
15:12
none
XYZW component mask (X is the LSB). Write the
component iff the corresponding bit is 1. User should
enable all components which contain address/data for the
operation. For RAT store-raw, set to 0x1; for other
RATs, set of 0xf.
SQ_MICRO:SQ_CF_ALLOC_EXPORT_WORD1_SWIZ · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8dfc
DESCRIPTION: Word 1 of the control flow instruction. This subencoding is used by alloc/exports for PIXEL,
POS, and PARAM.
Field Name
Bits
Default
Description
SEL_X
2:0
none
Specify source for each component of the export.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
SEL_Y
5:3
none
Specify source for each component of the export.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
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06 - Reserved
07 - SQ_SEL_MASK: mask out this component
SEL_Z
8:6
none
Specify source for each component of the export.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
SEL_W
11:9
none
Specify source for each component of the export.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
SQ_MICRO:SQ_CF_GWS_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Control flow instruction word 0. This word is used by Global Wave Sync instructions.
Field Name
Bits
Default
Description
VALUE
9:0
none
Counter load value for Barrier and Init opcodes.
RESOURCE
20:16
none
Index of resource. 0-15 in 1-SE chips, 0-31 in 2-SE
chips.
SIGN
25
none
If set, resource will be treated as signed -512..511 (as
opposed to unsigned 0..1023).
VAL_INDEX_MODE
27:26
none
Override counter load value from instruction using
index0/index1 registers.
POSSIBLE VALUES:
00 - SQ_GWS_INDEX_NONE: use source from
instruction
01 - SQ_GWS_INDEX_0: use index0 as value
02 - SQ_GWS_INDEX_1: use index1 as value
03 - SQ_GWS_INDEX_MIX: use a combination of
index0 and index1 as value
RSRC_INDEX_MODE
29:28
none
Override resource index from instruction using
index0/index1 registers.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
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constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
GWS_OPCODE
31:30
none
Specify the atomic operation to execute on a resource.
POSSIBLE VALUES:
00 - SQ_GWS_SEMA_V: semaphore V()
01 - SQ_GWS_SEMA_P: semaphore P()
02 - SQ_GWS_BARRIER: wavefront barrier
03 - SQ_GWS_INIT: resource initialization
SQ_MICRO:SQ_ALU_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 0.
Field Name
Bits
Default
Description
SRC0_SEL
8:0
none
Source for operands src0, src1. Values [0,127]
correspond to GPR[0..127]. Values [128,159] correspond
to kcache constants in bank 0, [160,191] to bank 1,
[256,287] to bank 2, [288,319] to bank3. [192,255] are
inline constant values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A
and B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A
and B queues at the end of the instruction group(xyzwt).
223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of
64-bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
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232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this
clause executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
244 - SQ_ALU_SRC_1_DBL_L: special constant
1.0 double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
255 - SQ_ALU_SRC_PS: previous scalar result.
SRC0_REL
9
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
© 2011 Advanced Micro Devices, Inc.
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01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC0_CHAN
11:10
none
Specify which channel of the source to use for this
operand.
POSSIBLE VALUES:
00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
SRC0_NEG
12
none
If set, negate the input for this operand. Should only be
set for floating point inputs.
SRC1_SEL
21:13
none
Source for operands src0, src1. Values [0,127]
correspond to GPR[0..127]. Values [128,159] correspond
to kcache constants in bank 0, [160,191] to bank 1,
[256,287] to bank 2, [288,319] to bank3. [192,255] are
inline constant values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A
and B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A
and B queues at the end of the instruction group(xyzwt).
223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of
64-bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
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236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this
clause executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
244 - SQ_ALU_SRC_1_DBL_L: special constant
1.0 double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
255 - SQ_ALU_SRC_PS: previous scalar result.
SRC1_REL
22
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC1_CHAN
24:23
none
Specify which channel of the source to use for this
operand.
POSSIBLE VALUES:
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00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
SRC1_NEG
25
none
If set, negate the input for this operand. Should only be
set for floating point inputs.
INDEX_MODE
28:26
none
Specify what relative addressing mode to use for
operands that have the REL bit set.
POSSIBLE VALUES:
00 - SQ_INDEX_AR_X: constants/gpr: add AR.X.
04 - SQ_INDEX_LOOP: add current loop index
value.
05 - SQ_INDEX_GLOBAL: treat gpr address as
absolute, not thread-relative.
06 - SQ_INDEX_GLOBAL_AR_X: treat gpr address
as absolute and add GPR-index (ar.x).
PRED_SEL
30:29
none
Predicate to apply to this instruction.
POSSIBLE VALUES:
00 - SQ_PRED_SEL_OFF: execute all pixels.
01 - Reserved
02 - SQ_PRED_SEL_ZERO: execute when pred = 0.
03 - SQ_PRED_SEL_ONE: execute when pred = 1.
LAST
31
none
If set, this is the last 64-bit word for this instruction.
SQ_MICRO:SQ_ALU_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1 is the bitwise OR of SQ_ALU_WORD1 | SQ_ALU_WORD1_OP[2,3].
SQ_ALU_WORD1 contains fields used by all encodings.
Field Name
Bits
Default
Description
ENCODING
17:15
none
A read-only field used to determine whether OP2 or OP3
encoding is being used. If this field`s value is 0, the
instruction is using OP2. Otherwise, the instruction is
using OP3. Do not write to this field directly.
BANK_SWIZZLE
20:18
none
Specify how to load operands into the SP.
POSSIBLE VALUES:
00 - SQ_ALU_VEC_012, SQ_ALU_SCL_210
01 - SQ_ALU_VEC_021, SQ_ALU_SCL_122
02 - SQ_ALU_VEC_120, SQ_ALU_SCL_212
03 - SQ_ALU_VEC_102, SQ_ALU_SCL_221
04 - SQ_ALU_VEC_201
05 - SQ_ALU_VEC_210
DST_GPR
27:21
none
Destination address to write result to. Always a GPR
address.
DST_REL
28
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
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POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
DST_CHAN
30:29
none
Specify which channel of DST_GPR to write the result
to.
POSSIBLE VALUES:
00 - CHAN_X: write to X channel of dest.
01 - CHAN_Y: write to Y channel of dest.
02 - CHAN_Z: write to Z channel of dest.
03 - CHAN_W: write to W channel of dest.
CLAMP
31
none
If set, clamp the result to [0.0, 1.0]. Not mathematically
defined for opcodes that produce integer results.
SQ_MICRO:SQ_ALU_WORD1_OP2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1. This subencoding is used for OP2 instructions (instructions taking 0 to 2
operands).
Field Name
Bits
Default
Description
SRC0_ABS
0
none
If set, take the absolute value of the input for this
operand. Should only be set for floating point inputs;
performed before negation.
SRC1_ABS
1
none
If set, take the absolute value of the input for this
operand. Should only be set for floating point inputs;
performed before negation.
UPDATE_EXECUTE_MASK
2
none
If set, update the execute mask in the SQ after executing
this instruction based on the current predicate.
UPDATE_PRED
3
none
If set, update the predicate in the SP based on the
predicate operation computed here.
WRITE_MASK
4
none
If set, write this scalar result to the destination GPR
channel.
OMOD
6:5
none
Output modifier for this instruction. Must be set to
ALU_OMOD_OFF for operations that produce an
integer result.
POSSIBLE VALUES:
00 - SQ_ALU_OMOD_OFF: identity.
01 - SQ_ALU_OMOD_M2: multiply by 2.0.
02 - SQ_ALU_OMOD_M4: multiply by 4.0.
03 - SQ_ALU_OMOD_D2: divide by 2.0.
ALU_INST
© 2011 Advanced Micro Devices, Inc.
Proprietary
17:7
none
Instruction opcode. The top 3 bits of this must be zero.
Caution: gaps in opcode values are not marked in the
table below. Opcodes 0..95 can be used in either the
Vector or Trans unit. Opcodes 128..159 are Trans-only.
Opcodes 160..255 are Vector-only.
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POSSIBLE VALUES:
00 - SQ_OP2_INST_ADD
01 - SQ_OP2_INST_MUL
02 - SQ_OP2_INST_MUL_IEEE
03 - SQ_OP2_INST_MAX
04 - SQ_OP2_INST_MIN
05 - SQ_OP2_INST_MAX_DX10
06 - SQ_OP2_INST_MIN_DX10
08 - SQ_OP2_INST_SETE
09 - SQ_OP2_INST_SETGT
10 - SQ_OP2_INST_SETGE
11 - SQ_OP2_INST_SETNE
12 - SQ_OP2_INST_SETE_DX10
13 - SQ_OP2_INST_SETGT_DX10
14 - SQ_OP2_INST_SETGE_DX10
15 - SQ_OP2_INST_SETNE_DX10
16 - SQ_OP2_INST_FRACT
17 - SQ_OP2_INST_TRUNC
18 - SQ_OP2_INST_CEIL
19 - SQ_OP2_INST_RNDNE
20 - SQ_OP2_INST_FLOOR
21 - SQ_OP2_INST_ASHR_INT
22 - SQ_OP2_INST_LSHR_INT
23 - SQ_OP2_INST_LSHL_INT
25 - SQ_OP2_INST_MOV
26 - SQ_OP2_INST_NOP
30 - SQ_OP2_INST_PRED_SETGT_UINT
31 - SQ_OP2_INST_PRED_SETGE_UINT
32 - SQ_OP2_INST_PRED_SETE
33 - SQ_OP2_INST_PRED_SETGT
34 - SQ_OP2_INST_PRED_SETGE
35 - SQ_OP2_INST_PRED_SETNE
36 - SQ_OP2_INST_PRED_SET_INV
37 - SQ_OP2_INST_PRED_SET_POP
38 - SQ_OP2_INST_PRED_SET_CLR
39 - SQ_OP2_INST_PRED_SET_RESTORE
40 - SQ_OP2_INST_PRED_SETE_PUSH
41 - SQ_OP2_INST_PRED_SETGT_PUSH
42 - SQ_OP2_INST_PRED_SETGE_PUSH
43 - SQ_OP2_INST_PRED_SETNE_PUSH
44 - SQ_OP2_INST_KILLE
45 - SQ_OP2_INST_KILLGT
46 - SQ_OP2_INST_KILLGE
47 - SQ_OP2_INST_KILLNE
48 - SQ_OP2_INST_AND_INT
49 - SQ_OP2_INST_OR_INT
50 - SQ_OP2_INST_XOR_INT
51 - SQ_OP2_INST_NOT_INT
52 - SQ_OP2_INST_ADD_INT
53 - SQ_OP2_INST_SUB_INT
54 - SQ_OP2_INST_MAX_INT
55 - SQ_OP2_INST_MIN_INT
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56 - SQ_OP2_INST_MAX_UINT
57 - SQ_OP2_INST_MIN_UINT
58 - SQ_OP2_INST_SETE_INT
59 - SQ_OP2_INST_SETGT_INT
60 - SQ_OP2_INST_SETGE_INT
61 - SQ_OP2_INST_SETNE_INT
62 - SQ_OP2_INST_SETGT_UINT
63 - SQ_OP2_INST_SETGE_UINT
64 - SQ_OP2_INST_KILLGT_UINT
65 - SQ_OP2_INST_KILLGE_UINT
66 - SQ_OP2_INST_PRED_SETE_INT
67 - SQ_OP2_INST_PRED_SETGT_INT
68 - SQ_OP2_INST_PRED_SETGE_INT
69 - SQ_OP2_INST_PRED_SETNE_INT
70 - SQ_OP2_INST_KILLE_INT
71 - SQ_OP2_INST_KILLGT_INT
72 - SQ_OP2_INST_KILLGE_INT
73 - SQ_OP2_INST_KILLNE_INT
74 - SQ_OP2_INST_PRED_SETE_PUSH_INT
75 - SQ_OP2_INST_PRED_SETGT_PUSH_INT
76 - SQ_OP2_INST_PRED_SETGE_PUSH_INT
77 - SQ_OP2_INST_PRED_SETNE_PUSH_INT
78 - SQ_OP2_INST_PRED_SETLT_PUSH_INT
79 - SQ_OP2_INST_PRED_SETLE_PUSH_INT
80 - SQ_OP2_INST_FLT_TO_INT
81 - SQ_OP2_INST_BFREV_INT
82 - SQ_OP2_INST_ADDC_UINT
83 - SQ_OP2_INST_SUBB_UINT
84 - SQ_OP2_INST_GROUP_BARRIER
85 - SQ_OP2_INST_GROUP_SEQ_BEGIN
86 - SQ_OP2_INST_GROUP_SEQ_END
87 - SQ_OP2_INST_SET_MODE
88 - SQ_OP2_INST_SET_CF_IDX0
89 - SQ_OP2_INST_SET_CF_IDX1
90 - SQ_OP2_INST_SET_LDS_SIZE
129 - SQ_OP2_INST_EXP_IEEE
130 - SQ_OP2_INST_LOG_CLAMPED
131 - SQ_OP2_INST_LOG_IEEE
132 - SQ_OP2_INST_RECIP_CLAMPED
133 - SQ_OP2_INST_RECIP_FF
134 - SQ_OP2_INST_RECIP_IEEE
135 - SQ_OP2_INST_RECIPSQRT_CLAMPED
136 - SQ_OP2_INST_RECIPSQRT_FF
137 - SQ_OP2_INST_RECIPSQRT_IEEE
138 - SQ_OP2_INST_SQRT_IEEE
141 - SQ_OP2_INST_SIN
142 - SQ_OP2_INST_COS
143 - SQ_OP2_INST_MULLO_INT
144 - SQ_OP2_INST_MULHI_INT
145 - SQ_OP2_INST_MULLO_UINT
146 - SQ_OP2_INST_MULHI_UINT
147 - SQ_OP2_INST_RECIP_INT
148 - SQ_OP2_INST_RECIP_UINT
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149 - SQ_OP2_INST_RECIP_64
150 - SQ_OP2_INST_RECIP_CLAMPED_64
151 - SQ_OP2_INST_RECIPSQRT_64
152 - SQ_OP2_INST_RECIPSQRT_CLAMPED_64
153 - SQ_OP2_INST_SQRT_64
154 - SQ_OP2_INST_FLT_TO_UINT
155 - SQ_OP2_INST_INT_TO_FLT
156 - SQ_OP2_INST_UINT_TO_FLT
160 - SQ_OP2_INST_BFM_INT
162 - SQ_OP2_INST_FLT32_TO_FLT16
163 - SQ_OP2_INST_FLT16_TO_FLT32
164 - SQ_OP2_INST_UBYTE0_FLT
165 - SQ_OP2_INST_UBYTE1_FLT
166 - SQ_OP2_INST_UBYTE2_FLT
167 - SQ_OP2_INST_UBYTE3_FLT
170 - SQ_OP2_INST_BCNT_INT
171 - SQ_OP2_INST_FFBH_UINT
172 - SQ_OP2_INST_FFBL_INT
173 - SQ_OP2_INST_FFBH_INT
174 - SQ_OP2_INST_FLT_TO_UINT4
175 - SQ_OP2_INST_DOT_IEEE
176 - SQ_OP2_INST_FLT_TO_INT_RPI
177 - SQ_OP2_INST_FLT_TO_INT_FLOOR
178 - SQ_OP2_INST_MULHI_UINT24
179 - SQ_OP2_INST_MBCNT_32HI_INT
180 - SQ_OP2_INST_OFFSET_TO_FLT
181 - SQ_OP2_INST_MUL_UINT24
182 - SQ_OP2_INST_BCNT_ACCUM_PREV_INT
183 SQ_OP2_INST_MBCNT_32LO_ACCUM_PREV_INT
184 - SQ_OP2_INST_SETE_64
185 - SQ_OP2_INST_SETNE_64
186 - SQ_OP2_INST_SETGT_64
187 - SQ_OP2_INST_SETGE_64
188 - SQ_OP2_INST_MIN_64
189 - SQ_OP2_INST_MAX_64
190 - SQ_OP2_INST_DOT4
191 - SQ_OP2_INST_DOT4_IEEE
192 - SQ_OP2_INST_CUBE
193 - SQ_OP2_INST_MAX4
196 - SQ_OP2_INST_FREXP_64
197 - SQ_OP2_INST_LDEXP_64
198 - SQ_OP2_INST_FRACT_64
199 - SQ_OP2_INST_PRED_SETGT_64
200 - SQ_OP2_INST_PRED_SETE_64
201 - SQ_OP2_INST_PRED_SETGE_64
202 - SQ_OP2_INST_MUL_64
203 - SQ_OP2_INST_ADD_64
204 - SQ_OP2_INST_MOVA_INT
205 - SQ_OP2_INST_FLT64_TO_FLT32
206 - SQ_OP2_INST_FLT32_TO_FLT64
207 - SQ_OP2_INST_SAD_ACCUM_PREV_UINT
208 - SQ_OP2_INST_DOT
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209 - SQ_OP2_INST_MUL_PREV
210 - SQ_OP2_INST_MUL_IEEE_PREV
211 - SQ_OP2_INST_ADD_PREV
212 - SQ_OP2_INST_MULADD_PREV
213 - SQ_OP2_INST_MULADD_IEEE_PREV
214 - SQ_OP2_INST_INTERP_XY
215 - SQ_OP2_INST_INTERP_ZW
216 - SQ_OP2_INST_INTERP_X
217 - SQ_OP2_INST_INTERP_Z
218 - SQ_OP2_INST_STORE_FLAGS
219 - SQ_OP2_INST_LOAD_STORE_FLAGS
220 - Reserved
221 - Reserved
223 - Reserved
224 - SQ_OP2_INST_INTERP_LOAD_P0
225 - SQ_OP2_INST_INTERP_LOAD_P10
226 - SQ_OP2_INST_INTERP_LOAD_P20
SQ_MICRO:SQ_ALU_WORD1_OP2_MOVA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1. This subencoding is used for MOVA instructions.
Field Name
Bits
Default
Description
MOVA_DST
27:21
none
Indicates target of MOVA instruction. The output is not
written to a GPR but instead to the destination indicated
by this field.
POSSIBLE VALUES:
00 - SQ_ALU_MOVA_DST_AR_X: store MOVA
result 9 lsbs in AR.X.
01 - SQ_ALU_MOVA_DST_CF_PC: store MOVA
result in CF_PC. From GPR sources, only 9 lsbs are
copied.
02 - SQ_ALU_MOVA_DST_CF_IDX0: store
MOVA result 9 lsbs in CF_IDX0
03 - SQ_ALU_MOVA_DST_CF_IDX1: store
MOVA result 9 lsbs in CF_IDX1
04 SQ_ALU_MOVA_DST_CLAUSE_GLOBAL_B0: store
MOVA result 8 lsbs in CLAUSE_GLOBAL[7:0]
05 SQ_ALU_MOVA_DST_CLAUSE_GLOBAL_B1: store
MOVA result 8 lsbs in CLAUSE_GLOBAL[15:8]
06 SQ_ALU_MOVA_DST_CLAUSE_GLOBAL_B2: store
MOVA result 8 lsbs in CLAUSE_GLOBAL[23:16]
07 SQ_ALU_MOVA_DST_CLAUSE_GLOBAL_B3: store
MOVA result 8 lsbs in CLAUSE_GLOBAL[31:24]
SQ_MICRO:SQ_ALU_WORD1_OP2_EXECUTE_MASK · [R/W] · 32 bits · Access: 32 ·
© 2011 Advanced Micro Devices, Inc.
Proprietary
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GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1. This subencoding is used for OP2 instructions with
UPDATE_EXECUTE_MASK set.
Field Name
Bits
Default
Description
EXECUTE_MASK_OP
6:5
none
Indicates how to update the execute mask after executing
this instruction based on the current predicate. This field
should be used instead of OMOD.
POSSIBLE VALUES:
00 SQ_ALU_EXECUTE_MASK_OP_DEACTIVATE:
deactivate active thread if PRED bit would be set to 0 or
PRED_SEL does not select this thread.
01 - SQ_ALU_EXECUTE_MASK_OP_BREAK:
deactivate active thread if PRED bit would be set to 0 or
PRED_SEL does not select this thread, and don`t
reactivete it until we exit the innermost loop
02 SQ_ALU_EXECUTE_MASK_OP_CONTINUE:
deactivate active thread if PRED bit would be set to 0 or
PRED_SEL does not select this thread, and don`t
reactivate it until we repeat or exit the innermost loop
03 - SQ_ALU_EXECUTE_MASK_OP_KILL: kill
active thread if PRED bit would be set to 0 or if
PRED_SEL does not select this thread. This is
independent of the KILL instruction and is for using
predicate operations to kill threads.
SQ_MICRO:SQ_ALU_WORD1_OP3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1. This subencoding is used for OP3 instructions (instructions taking 3
operands).
Field Name
Bits
Default
Description
SRC2_SEL
8:0
none
Source for operands src0, src1. Values [0,127]
correspond to GPR[0..127]. Values [128,159] correspond
to kcache constants in bank 0, [160,191] to bank 1,
[256,287] to bank 2, [288,319] to bank3. [192,255] are
inline constant values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A
and B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A
and B queues at the end of the instruction group(xyzwt).
© 2011 Advanced Micro Devices, Inc.
Proprietary
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223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of
64-bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this
clause executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
244 - SQ_ALU_SRC_1_DBL_L: special constant
1.0 double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
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97
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0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
255 - SQ_ALU_SRC_PS: previous scalar result.
SRC2_REL
9
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC2_CHAN
11:10
none
Specify which channel of the source to use for this
operand.
POSSIBLE VALUES:
00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
SRC2_NEG
12
none
If set, negate the input for this operand. Should only be
set for floating point inputs.
ALU_INST
17:13
none
Instruction opcode. Caution: opcode values do not begin
at zero. Opcodes 4..17 are Vector-only. Opcodes 20..31
can be used in either the Vector or Trans unit. Opcode 31
is Trans-only.
POSSIBLE VALUES:
04 - SQ_OP3_INST_BFE_UINT
05 - SQ_OP3_INST_BFE_INT
06 - SQ_OP3_INST_BFI_INT
07 - SQ_OP3_INST_FMA
09 - SQ_OP3_INST_CNDNE_64
10 - SQ_OP3_INST_FMA_64
11 - SQ_OP3_INST_LERP_UINT
12 - SQ_OP3_INST_BIT_ALIGN_INT
13 - SQ_OP3_INST_BYTE_ALIGN_INT
14 - SQ_OP3_INST_SAD_ACCUM_UINT
15 - SQ_OP3_INST_SAD_ACCUM_HI_UINT
16 - SQ_OP3_INST_MULADD_UINT24
17 - SQ_OP3_INST_LDS_IDX_OP: This opcodes
implies SQ_ALU_WORD*_LDS_IDX_OP encoding
20 - SQ_OP3_INST_MULADD
21 - SQ_OP3_INST_MULADD_M2
22 - SQ_OP3_INST_MULADD_M4
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23 - SQ_OP3_INST_MULADD_D2
24 - SQ_OP3_INST_MULADD_IEEE
25 - SQ_OP3_INST_CNDE
26 - SQ_OP3_INST_CNDGT
27 - SQ_OP3_INST_CNDGE
28 - SQ_OP3_INST_CNDE_INT
29 - SQ_OP3_INST_CNDGT_INT
30 - SQ_OP3_INST_CNDGE_INT
31 - SQ_OP3_INST_MUL_LIT
SQ_MICRO:SQ_ALU_WORD0_LDS_IDX_OP · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 0 for SQ_LDS_IDX_OP
Field Name
Bits
Default
Description
SRC0_SEL
8:0
none
Source for operands src0, src1. Values [0,127] correspond
to GPR[0..127]. Values [128,159] correspond to kcache
constants in bank 0, [160,191] to bank 1, [256,287] to
bank 2, [288,319] to bank3. [192,255] are inline constant
values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A and
B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A and
B queues at the end of the instruction group(xyzwt).
223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of 64bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
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only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this clause
executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for details.
244 - SQ_ALU_SRC_1_DBL_L: special constant 1.0
double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
255 - SQ_ALU_SRC_PS: previous scalar result.
SRC0_REL
9
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC0_CHAN
© 2011 Advanced Micro Devices, Inc.
Proprietary
11:10
none
Specify which channel of the source to use for this
operand.
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POSSIBLE VALUES:
00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
IDX_OFFSET_4
12
none
Index offset bit 4
SRC1_SEL
21:13
none
Source for operands src0, src1. Values [0,127] correspond
to GPR[0..127]. Values [128,159] correspond to kcache
constants in bank 0, [160,191] to bank 1, [256,287] to
bank 2, [288,319] to bank3. [192,255] are inline constant
values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A and
B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A and
B queues at the end of the instruction group(xyzwt).
223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of 64bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this clause
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executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for details.
244 - SQ_ALU_SRC_1_DBL_L: special constant 1.0
double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
255 - SQ_ALU_SRC_PS: previous scalar result.
SRC1_REL
22
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC1_CHAN
24:23
none
Specify which channel of the source to use for this
operand.
POSSIBLE VALUES:
00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
IDX_OFFSET_5
25
none
Index offset bit 5
INDEX_MODE
28:26
none
Specify what relative addressing mode to use for
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operands that have the REL bit set.
POSSIBLE VALUES:
00 - SQ_INDEX_AR_X: constants/gpr: add AR.X.
04 - SQ_INDEX_LOOP: add current loop index
value.
05 - SQ_INDEX_GLOBAL: treat gpr address as
absolute, not thread-relative.
06 - SQ_INDEX_GLOBAL_AR_X: treat gpr address
as absolute and add GPR-index (ar.x).
PRED_SEL
30:29
none
Predicate to apply to this instruction.
POSSIBLE VALUES:
00 - SQ_PRED_SEL_OFF: execute all pixels.
01 - Reserved
02 - SQ_PRED_SEL_ZERO: execute when pred = 0.
03 - SQ_PRED_SEL_ONE: execute when pred = 1.
LAST
31
none
If set, this is the last 64-bit word for this instruction.
SQ_MICRO:SQ_ALU_WORD1_LDS_IDX_OP · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: ALU instruction word 1 for SQ_LDS_IDX_OP
Field Name
Bits
Default
Description
SRC2_SEL
8:0
none
Source for operands src0, src1. Values [0,127]
correspond to GPR[0..127]. Values [128,159] correspond
to kcache constants in bank 0, [160,191] to bank 1,
[256,287] to bank 2, [288,319] to bank3. [192,255] are
inline constant values.
POSSIBLE VALUES:
219 - SQ_ALU_SRC_LDS_OQ_A: Use contents of
LDS Output Queue A and leave it on the queue.
220 - SQ_ALU_SRC_LDS_OQ_B: Use contents of
LDS Output Queue B and leave it on the queue.
221 - SQ_ALU_SRC_LDS_OQ_A_POP: Use
contents of LDS Output Queue A, and pop both the A
and B queues at the end of the instruction group(xyzwt).
222 - SQ_ALU_SRC_LDS_OQ_B_POP: Use
contents of LDS Output Queue B, and pop both the A
and B queues at the end of the instruction group(xyzwt).
223 - SQ_ALU_SRC_LDS_DIRECT_A: Direct read
of LDS on the A cycle. Address is defined in literal
constant-0 (xy).
224 - SQ_ALU_SRC_LDS_DIRECT_B: Direct read
of LDS on the B cycle. Address is defined in literal
constant-0 (xy).
227 - SQ_ALU_SRC_TIME_HI: Upper 32 bits of
64-bit clock counter
228 - SQ_ALU_SRC_TIME_LO: Lower 32 bits of
64-bit clock counter
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229 - SQ_ALU_SRC_MASK_HI: Upper 32bits of
active mask
230 - SQ_ALU_SRC_MASK_LO: Lower 32bits of
active mask
231 - SQ_ALU_SRC_HW_WAVE_ID: Hardware
wave ID (int)
232 - SQ_ALU_SRC_SIMD_ID: Simd id (int)
233 - SQ_ALU_SRC_SE_ID: Shader engine ID (int)
234 - SQ_ALU_SRC_HW_THREADGRP_ID:
Hardware thread group ID (int) within simd. CS and HS
only.
235 - SQ_ALU_SRC_WAVE_ID_IN_GRP: Wave id
within thread group (int). CS and HS only.
236 SQ_ALU_SRC_NUM_THREADGRP_WAVES:
Number of waves in thread group (int). CS and HS only,
must barrier before using.
237 - SQ_ALU_SRC_HW_ALU_ODD: Is this
clause executing on the even(0) or odd(1) path (int)
238 - SQ_ALU_SRC_LOOP_IDX: Current value of
the loop index (int)
240 - SQ_ALU_SRC_PARAM_BASE_ADDR:
Parameter cache base (SQ_LDS_ALLOC_PS), (int)
241 - SQ_ALU_SRC_NEW_PRIM_MASK: Bit
mask. 1 bit per quad, `1` indicates `this quad starts a new
primitive`. Mask omits bit for first quad since it always
begins a new primitive. (e.g in a vectorsize 64 system,
this mask is {[15:1],1`b1}).
242 - SQ_ALU_SRC_PRIM_MASK_HI: Upper 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
243 - SQ_ALU_SRC_PRIM_MASK_LO: Lower 32
bits of 64-bit expansion of NEW_PRIM_MASK. Used
for general parameter interp. See SQ-arch spec for
details.
244 - SQ_ALU_SRC_1_DBL_L: special constant
1.0 double-float, LSW.
245 - SQ_ALU_SRC_1_DBL_M: special constant
1.0 double-float, MSW.
246 - SQ_ALU_SRC_0_5_DBL_L: special constant
0.5 double-float, LSW.
247 - SQ_ALU_SRC_0_5_DBL_M: special constant
0.5 double-float, MSW.
248 - SQ_ALU_SRC_0: special constant 0.0.
249 - SQ_ALU_SRC_1: special constant 1.0 float.
250 - SQ_ALU_SRC_1_INT: special constant 1
integer.
251 - SQ_ALU_SRC_M_1_INT: special constant -1
integer.
252 - SQ_ALU_SRC_0_5: special constant 0.5 float.
253 - SQ_ALU_SRC_LITERAL: literal constant.
254 - SQ_ALU_SRC_PV: previous vector result.
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255 - SQ_ALU_SRC_PS: previous scalar result.
SRC2_REL
9
none
If set, this operand uses relative addressing based on the
INDEX_MODE.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add index from
INDEX_MODE to this address
SRC2_CHAN
11:10
none
Specify which channel of the source to use for this
operand.
POSSIBLE VALUES:
00 - SQ_CHAN_X: Use X component.
01 - SQ_CHAN_Y: Use Y component.
02 - SQ_CHAN_Z: Use Z component.
03 - SQ_CHAN_W: Use W component.
IDX_OFFSET_1
12
none
Index_offset bit 1
ALU_INST
17:13
none
Instruction opcode. Caution: opcode values do not begin
at zero.
POSSIBLE VALUES:
04 - SQ_OP3_INST_BFE_UINT
05 - SQ_OP3_INST_BFE_INT
06 - SQ_OP3_INST_BFI_INT
07 - SQ_OP3_INST_FMA
09 - SQ_OP3_INST_CNDNE_64
10 - SQ_OP3_INST_FMA_64
11 - SQ_OP3_INST_LERP_UINT
12 - SQ_OP3_INST_BIT_ALIGN_INT
13 - SQ_OP3_INST_BYTE_ALIGN_INT
14 - SQ_OP3_INST_SAD_ACCUM_UINT
15 - SQ_OP3_INST_SAD_ACCUM_HI_UINT
16 - SQ_OP3_INST_MULADD_UINT24
17 - SQ_OP3_INST_LDS_IDX_OP: This opcodes
implies SQ_ALU_WORD*_LDS_IDX_OP encoding
20 - SQ_OP3_INST_MULADD
21 - SQ_OP3_INST_MULADD_M2
22 - SQ_OP3_INST_MULADD_M4
23 - SQ_OP3_INST_MULADD_D2
24 - SQ_OP3_INST_MULADD_IEEE
25 - SQ_OP3_INST_CNDE
26 - SQ_OP3_INST_CNDGT
27 - SQ_OP3_INST_CNDGE
28 - SQ_OP3_INST_CNDE_INT
29 - SQ_OP3_INST_CNDGT_INT
30 - SQ_OP3_INST_CNDGE_INT
31 - SQ_OP3_INST_MUL_LIT
BANK_SWIZZLE
20:18
none
Specify how to load operands into the SP.
POSSIBLE VALUES:
00 - SQ_ALU_VEC_012, SQ_ALU_SCL_210
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01 - SQ_ALU_VEC_021, SQ_ALU_SCL_122
02 - SQ_ALU_VEC_120, SQ_ALU_SCL_212
03 - SQ_ALU_VEC_102, SQ_ALU_SCL_221
04 - SQ_ALU_VEC_201
05 - SQ_ALU_VEC_210
LDS_OP
26:21
none
Local Data share atomic opcode
POSSIBLE VALUES:
00 - SQ_DS_INST_ADD: OP(dst,src, ...)
dst=src0_sel, src=src1_sel.
1A1D ADD(dst,src) : DS(dst) += src. dst is src0_sel, src
is src1_sel.
01 - SQ_DS_INST_SUB: 1A1D SUB(dst,src) :
DS(dst) = DS(dst) - src
02 - SQ_DS_INST_RSUB: 1A1D RSUB(dst,src):
DS(dst) = src - DS(dst)
03 - SQ_DS_INST_INC: 1A1D INC(dst) :
(DS(dst)>=src) ? DS(dst) = 0 : DS(dst)++
04 - SQ_DS_INST_DEC: 1A1D DEC(dst) : DS(dst)
= ((DS(dst)==0) || (DS(dst)>src)) ? src : DS(dst)-1
05 - SQ_DS_INST_MIN_INT: 1A1D MIN(dst,src) :
DS(dst) = min (DS(dst),src)
06 - SQ_DS_INST_MAX_INT: 1A1D MAX(dst,src)
: DS(dst) = max(DS(dst),src)
07 - SQ_DS_INST_MIN_UINT: 1A1D MIN(dst,src)
: DS(dst) = min (DS(dst),src)
08 - SQ_DS_INST_MAX_UINT: 1A1D
MAX(dst,src) : DS(dst) = max(DS(dst),src)
09 - SQ_DS_INST_AND: 1A1D AND(dst,src) :
DS(dst) &= src
10 - SQ_DS_INST_OR: 1A1D OR(dst,src) : DS(dst)
|= src
11 - SQ_DS_INST_XOR: 1A1D XOR(dst,src) :
DS(dst) ^= src
12 - SQ_DS_INST_MSKOR: 1A2D
MKSOR(dst,mask,src) : DS(dst) = ((DS(dst) & ~msk) |
src).
13 - SQ_DS_INST_WRITE: 1A1D WRITE(dst,src) :
DS(dst) = src
14 - SQ_DS_INST_WRITE_REL: 1A2D
WRITEREL(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset (offset in dwords). DS(dst) = src0,
DS(tmp) = src1
15 - SQ_DS_INST_WRITE2: 1A2D
WRITE2(dst,src0,src1) : tmp = dst+(sq_DS_idx_offset *
64). DS(dst) = src0, DS(tmp) = src1
16 - SQ_DS_INST_CMP_STORE: 1A2D
CMP_STORE(dst, cmp, src) : DS(dst) = (DS(dst) ==
cmp) ? src : DS(dst)
17 - SQ_DS_INST_CMP_STORE_SPF: 1A2D
CMP_STORE_SPF(dst, cmp, src) : DS(dst) = (DS(dst)
== cmp) ? src : DS(dst)
18 - SQ_DS_INST_BYTE_WRITE: 1A1D
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BYTEWRITE (dst, src) : DS(dst) = src[7:0]
19 - SQ_DS_INST_SHORT_WRITE: 1A1D
SHORTWRITE(dst, src) : DS(dst) = src[15:0]
32 - SQ_DS_INST_ADD_RET: 1A1D ADD(dst,src)
: OQA=DS(dst), DS(dst) += src. dst is src0_sel, src is
src1_sel.
33 - SQ_DS_INST_SUB_RET: 1A1D SUB(dst,src) :
OQA=DS(dst), DS(dst) = DS(dst) - src
34 - SQ_DS_INST_RSUB_RET: 1A1D
RSUB(dst,src) : OQA=DS(dst), DS(dst) = src - DS(dst)
35 - SQ_DS_INST_INC_RET: 1A1D INC(dst) :
OQA=DS(dst), (DS(dst)>=src) ? DS(dst) = 0 : DS(dst)++
36 - SQ_DS_INST_DEC_RET: 1A1D DEC(dst) :
OQA=DS(dst), DS(dst) = ((DS(dst)==0) || (DS(dst)>src))
? src : DS(dst)-1
37 - SQ_DS_INST_MIN_INT_RET: 1A1D
MIN(dst,src) : OQA=DS(dst), DS(dst) = min
(DS(dst),src)
38 - SQ_DS_INST_MAX_INT_RET: 1A1D
MAX(dst,src) : OQA=DS(dst), DS(dst) =
max(DS(dst),src)
39 - SQ_DS_INST_MIN_UINT_RET: 1A1D
MIN(dst,src) : OQA=DS(dst), DS(dst) = min
(DS(dst),src)
40 - SQ_DS_INST_MAX_UINT_RET: 1A1D
MAX(dst,src) : OQA=DS(dst), DS(dst) =
max(DS(dst),src)
41 - SQ_DS_INST_AND_RET: 1A1D AND(dst,src)
: OQA=DS(dst), DS(dst) &= src
42 - SQ_DS_INST_OR_RET: 1A1D OR(dst,src) :
OQA=DS(dst), DS(dst) |= src
43 - SQ_DS_INST_XOR_RET: 1A1D XOR(dst,src)
: OQA=DS(dst), DS(dst) ^= src
44 - SQ_DS_INST_MSKOR_RET: 1A2D
MSKOR(dst,msk,src) : OQA=DS(dst), DS(dst) =
((DS(dst) & ~msk) | src).
45 - SQ_DS_INST_XCHG_RET: 1A1D
Exchange(dst,src) : OQA=DS(dst), DS(dst) = src
46 - SQ_DS_INST_XCHG_REL_RET: 1A2D
ExchangeRel(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset. OQA=DS(dst), OQB=DS(tmp);
DS(dst)=src0, DS(tmp)=src1
47 - SQ_DS_INST_XCHG2_RET: 1A2D
Exchange2(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset*64. OQA=DS(dst), OQB=DS(tmp);
DS(dst)=src0, DS(tmp)=src1
48 - SQ_DS_INST_CMP_XCHG_RET: 1A2D
CompareExchange(dst,cmp,src) : OQA=DS(dst);
(DS(dst)==cmp) ? DS(dst)=src : DS(dst)=DS(dst)
49 - SQ_DS_INST_CMP_XCHG_SPF_RET: 1A2D
CompareExchangeSPF(dst,cmp,src) : OQA=DS(dst);
(DS(dst)==cmp) ? DS(dst)=src : DS(dst)=DS(dst)
50 - SQ_DS_INST_READ_RET: 1A READ(dst) :
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OQA = DS(dst)
51 - SQ_DS_INST_READ_REL_RET: 1A
READ_REL(dst) : tmp=dst+sq_DS_idx_offset;
OQA=DS(dst), OQB=DS(tmp)
52 - SQ_DS_INST_READ2_RET: 2A
READ2(dst0,dst1) : OQA=DS(dst0), OQB=DS(dst1)
53 - SQ_DS_INST_READWRITE_RET: 2A1D
READWRITE(dst0,dst1,data) : OQA=DS(dst0),
DS(dst1)=data
54 - SQ_DS_INST_BYTE_READ_RET: 1A
BYTEREAD(dst) : OQA=SignExtend(DS(dst)[7:0])
55 - SQ_DS_INST_UBYTE_READ_RET: 1A
UBYTEREAD(dst) : OQA={24`h0, DS(dst)[7:0]}
56 - SQ_DS_INST_SHORT_READ_RET: 1A
SHORTREAD(dst) : OQA=SignExtend(DS(dst)[15:0]}
57 - SQ_DS_INST_USHORT_READ_RET: 1A
USHORTREAD(dst) : OQA={16`h0, DS(dst)[15:0]}
63 SQ_DS_INST_ATOMIC_ORDERED_ALLOC_RET:
1A GDS-only (intercepted by ordered alloc unit). This
will add the 7 lsb of 1a to a hidden ordered append count
in wave order and return the pre-op value to the specified
destination register. This opcode can only be used by
GDS and with broadcast first set.
IDX_OFFSET_0
27
none
Index_offset bit 0. DWORD offset (except one lds op for
which it`s a 64-dword offset)
IDX_OFFSET_2
28
none
Index_offset bit 2
DST_CHAN
30:29
none
Specify which channel of DST_GPR to write the result
to.
POSSIBLE VALUES:
00 - CHAN_X: write to X channel of dest.
01 - CHAN_Y: write to Y channel of dest.
02 - CHAN_Z: write to Z channel of dest.
03 - CHAN_W: write to W channel of dest.
IDX_OFFSET_3
31
none
Index_offset bit 3
SQ_MICRO:SQ_ALU_WORD1_LDS_DIRECT_LITERAL_HI · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8dfc
DESCRIPTION: Literal0 constant contents for direct LDS reads.
Field Name
Bits
Default
Description
OFFSET_B
12:0
none
Dword offset for LDS-direct.
STRIDE_B
19:13
none
Dword stride. stride must not cause bank conflict in LDS
rams.
THREAD_REL_B
22
none
1 = add (wave_in_threadgroup * vectorsize * stride) to
offset.
DIRECT_READ_32
31
none
0 = read 16 dwords for A and B on each of 4 cycles. 1 =
read 32 dwords for A in one cycle, 32 for B the next,
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repeat. Has different memory conflict pattern.
SQ_MICRO:SQ_ALU_WORD1_LDS_DIRECT_LITERAL_LO · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x8dfc
DESCRIPTION: Literal0 constant contents for direct LDS reads.
Field Name
Bits
Default
Description
OFFSET_A
12:0
none
Dword offset for LDS-direct.
STRIDE_A
19:13
none
Dword stride. stride must not cause bank conflict in LDS
rams.
THREAD_REL_A
22
none
1 = add (wave_in_threadgroup * vectorsize * stride) to
offset.
SQ_MICRO:SQ_VTX_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Vertex fetch clause instruction word 0.
Field Name
Bits
Default
Description
VTX_INST
4:0
none
Opcode for this vertex fetch instruction.
POSSIBLE VALUES:
00 - SQ_VTX_INST_FETCH: vertex fetch (X = uint32
index). Not for use with MEM_RD_WORD* or
GDS_WORD* encodings.
01 - SQ_VTX_INST_SEMANTIC: semantic vertex fetch.
Not for use with MEM_RD_WORD* or GDS_WORD*
encodings.
14 - SQ_VTX_INST_GET_BUFFER_RESINFO: returns
the number of elements in a buffer. This is a VERTEXFETCH and uses a vertex constant, and can only be serviced
by TC, not by VC.
FETCH_TYPE
6:5
none
Specify which index offset to send to VC.
POSSIBLE VALUES:
00 - SQ_VTX_FETCH_VERTEX_DATA
01 - SQ_VTX_FETCH_INSTANCE_DATA
02 - SQ_VTX_FETCH_NO_INDEX_OFFSET
FETCH_WHOLE_QUAD
7
none
If set, texture instruction will fetch data for all pixels in any
quad which as at least one pixel is both active and valid
(result may be used as source coordinate of a dependent
read). If cleared, texture instruction can ignore inactive
pixels. Set this only in PS stage.
BUFFER_ID
15:8
none
Constant ID to use for this vertex fetch (indicates the buffer
address, size, and format).
SRC_GPR
22:16
none
Source GPR address to get fetch address from.
SRC_REL
23
none
Indicate whether source address is absolute or relative to an
index.
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POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to this
address.
SRC_SEL_X
25:24
none
Indicate which component of src to use for the fetch address.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
SRC_SEL_Y
27:26
none
Return data`s LDS write address (from Y), if LDS_REQ is
enabled.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
STRUCTURED_READ
29:28
none
Structured Read Mode, 0/1/2:
nomal_read/struct_rd_offset_in_gpr/struct_rd_offset_in_instr.
POSSIBLE VALUES:
00 - SQ_VTX_STRU_READ_OFF: Noraml vertex fetch:
not from structured buffer
01 - SQ_VTX_STRU_READ_GPR_OFFSET: Vertex
fetch from structured buffer with offset from GPR
02 - SQ_VTX_STRU_READ_INST_OFFSET: Vertex
fetch from structured buffer with offset from Instruction
LDS_REQ
30
none
Retrun data will write to LDS instead of GPR, if it is enabled.
COALESCED_READ
31
none
This is a coalesced vfetch
SQ_MICRO:SQ_VTX_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Vertex fetch clause instruction word 1 is the bitwise OR of WORD1 | WORD1_{GPR,SEM}. This
part contains fields shared by both subencodings.
Field Name
Bits
Default
Description
DST_SEL_X
11:9
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
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06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Y
14:12
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Z
17:15
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_W
20:18
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
USE_CONST_FIELDS
21
none
If set, use format given in the fetch constant instead of in
this instruction.
DATA_FORMAT
27:22
none
Indicate vertex data format (ignored if
USE_CONST_FIELDS = 1).
NUM_FORMAT_ALL
29:28
none
Format of returning data (N is the number of bits derived
from DATA_FORMAT and gamma) (ignored if
USE_CONST_FIELDS = 1).
POSSIBLE VALUES:
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00 - SQ_NUM_FORMAT_NORM: repeating
fraction number (0.N) with range [0, 1] if unsigned, or [1, 1] if signed.
01 - SQ_NUM_FORMAT_INT: integer number
(N.0) with range [0, 2^N] if unsigned, or [-2^M, 2^M] if
signed (M = N - 1).
02 - SQ_NUM_FORMAT_SCALED: integer
number stored as a S23E8 floating-point representation
(1 == 0x3f800000).
FORMAT_COMP_ALL
30
none
Indicate sign of source components (ignored if
USE_CONST_FIELDS = 1).
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
SRF_MODE_ALL
31
none
Mapping to use when converting from signed RF to float
(ignored if USE_CONST_FIELDS = 1).
POSSIBLE VALUES:
00 SQ_SRF_MODE_ZERO_CLAMP_MINUS_ONE:
representation with two -1 representations (one is slightly
past -1 but clamped).
01 - SQ_SRF_MODE_NO_ZERO: OpenGL format
lacking representation for 0.
SQ_MICRO:SQ_VTX_WORD1_GPR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Vertex fetch clause instruction word 1. This subencoding is used by fetch instructions that specify
a destination GPR directly.
Field Name
Bits
Default
Description
DST_GPR
6:0
none
Destination GPR address to write result to.
DST_REL
7
none
Indicate whether destination address is absolute or
relative to an index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
SQ_MICRO:SQ_VTX_WORD1_SEM · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Vertex fetch clause instruction word 1. This subencoding is used by semantic fetch instructions
that specify the destination using a semantic table.
Field Name
Bits
Default
Description
SEMANTIC_ID
7:0
none
Specify the 8-bit semantic ID used to lookup the
destination GPR from the semantic table.
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SQ_MICRO:SQ_VTX_WORD2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Vertex fetch clause instruction word 2.
Field Name
Bits
Default
Description
OFFSET
15:0
none
Offset to begin reading from. Byte-aligned.
ENDIAN_SWAP
17:16
none
Endian control (ignored if USE_CONST_FIELDS = 1).
POSSIBLE VALUES:
00 - SQ_ENDIAN_NONE: no endian swap (XOR by
0)
01 - SQ_ENDIAN_8IN16: 8 bit swap in 16 bit word
(XOR by 1): AABBCCDD -> BBAADDCC
02 - SQ_ENDIAN_8IN32: 8 bit swap in 32 bit word
(XOR by 3): AABBCCDD -> DDCCBBAA
CONST_BUF_NO_STRIDE
18
none
If set, force stride to zero for constant buffer fetches that
use absolute addresses.
ALT_CONST
20
none
if set, uses constants from alternate thread type: ps->vs,
vs->gs, gs->vs, es->gs (note that es and vs share
constants). Has no effect on HS, LS, CS.
BUFFER_INDEX_MODE
22:21
none
add index0 or index1 to the vertex buffer resource ID#,
or not.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
SQ_MICRO:SQ_TEX_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Texture fetch clause instruction word 0.
Field Name
Bits
Default
Description
TEX_INST
4:0
none
Opcode for this texture instruction.
POSSIBLE VALUES:
00 - RESERVED_0: Reserved for
SQ_VTX_INST_FETCH value in VTX_INST field of
SQ_VTX_WORD0.
01 - RESERVED_1: Reserved for
SQ_VTX_INST_SEMANTIC value in VTX_INST field
of SQ_VTX_WORD0.
02 - RESERVED_2: Reserved for
SQ_MEM_INST_MEM value in MEM_INST field of
SQ_MEM_RD_WORD0.
03 - SQ_TEX_INST_LD: fetch texel, XYZL are
uint32
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04 - SQ_TEX_INST_GET_TEXTURE_RESINFO:
retrieve width, height, depth, number of mipmap levels
05 SQ_TEX_INST_GET_NUMBER_OF_SAMPLES:
retrieve width, height, depth, number of samples of an
MSAA surface
06 - SQ_TEX_INST_GET_LOD: X = computed
LOD for all pixels in quad
07 - SQ_TEX_INST_GET_GRADIENTS_H: slopes
relative to horizontal: X = dx/dh, Y = dy/dh, Z = dz/dh,
W = dw/dh
08 - SQ_TEX_INST_GET_GRADIENTS_V: slopes
relative to vertical: X = dx/dv, Y = dy/dv, Z = dz/dv, W
= dw/dv
09 - SQ_TEX_INST_SET_TEXTURE_OFFSETS:
sets texture offsets from a gpr for use with gather4_o and
gather4_c_o
10 - SQ_TEX_INST_KEEP_GRADIENTS: compute
gradients from coordinates and store them
11 - SQ_TEX_INST_SET_GRADIENTS_H: XYZ
set horizontal gradients
12 - SQ_TEX_INST_SET_GRADIENTS_V: XYZ
set vertical gradients
13 - SQ_TEX_INST_PASS: returns the address read
in memory
14 - RESERVED_14: Reserved for
SQ_VTX_INST_GET_BUFFER_RESINFO.
15 - RESERVED_15
16 - SQ_TEX_INST_SAMPLE
17 - SQ_TEX_INST_SAMPLE_L
18 - SQ_TEX_INST_SAMPLE_LB
19 - SQ_TEX_INST_SAMPLE_LZ
20 - SQ_TEX_INST_SAMPLE_G
21 - SQ_TEX_INST_GATHER4: fetches unfiltered
texels from a bilinear sample, packs into xyzw
22 - SQ_TEX_INST_SAMPLE_G_LB
23 - SQ_TEX_INST_GATHER4_O
24 - SQ_TEX_INST_SAMPLE_C
25 - SQ_TEX_INST_SAMPLE_C_L
26 - SQ_TEX_INST_SAMPLE_C_LB
27 - SQ_TEX_INST_SAMPLE_C_LZ
28 - SQ_TEX_INST_SAMPLE_C_G
29 - SQ_TEX_INST_GATHER4_C
30 - SQ_TEX_INST_SAMPLE_C_G_LB
31 - SQ_TEX_INST_GATHER4_C_O
INST_MOD
6:5
none
Instruction modifier. Different meaning for different
tex_insts. Used for: LD, GetGradientsH/V and Gather4.
FETCH_WHOLE_QUAD
7
none
If set, texture instruction will fetch data for all pixels in
any quad which as at least one pixel both active and valid
(result may be used as source coordinate of a dependent
read). If cleared, texture instruction can ignore inactive
pixels.
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RESOURCE_ID
15:8
none
Surface ID to read from (specifies the buffer address,
size, and format). 160 available for GS and PS; 176
shared across FS and VS.
SRC_GPR
22:16
none
Source GPR address to get the texture lookup address
from.
SRC_REL
23
none
Indicate whether source address is absolute or relative to
an index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
ALT_CONST
24
none
if set, uses constants from alternate thread type: ps->vs,
vs->gs, gs->vs, es->gs (note that es and vs share
constants). Has no effect on HS, LS, CS.
RESOURCE_INDEX_MODE
26:25
none
add index0 or index1 to the resource ID#, or not.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
SAMPLER_INDEX_MODE
28:27
none
add index0 or index1 to the sampler ID#, or not.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
SQ_MICRO:SQ_TEX_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Texture fetch clause instruction word 1.
Field Name
Bits
Default
Description
DST_GPR
6:0
none
Destination GPR address to write result to.
DST_REL
7
none
Indicate whether destination address is absolute or
relative to an index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
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DST_SEL_X
11:9
none
April 26, 2011
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Y
14:12
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Z
17:15
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_W
20:18
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
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07 - SQ_SEL_MASK: mask out this component
LOD_BIAS
27:21
none
Constant LOD bias to add to the computed bias for this
lookup. Twos-complement S3.4 fixpoint value with
range [-4, 4).
COORD_TYPE_X
28
none
Indicate the type of the src.XYZW component.
POSSIBLE VALUES:
00 - SQ_TEX_UNNORMALIZED: Component is in
[0, dim); repeat and mirror modes unavailable.
01 - SQ_TEX_NORMALIZED: Component is in [0,
1]; repeat and mirror modes available.
COORD_TYPE_Y
29
none
Indicate the type of the src.XYZW component.
POSSIBLE VALUES:
00 - SQ_TEX_UNNORMALIZED: Component is in
[0, dim); repeat and mirror modes unavailable.
01 - SQ_TEX_NORMALIZED: Component is in [0,
1]; repeat and mirror modes available.
COORD_TYPE_Z
30
none
Indicate the type of the src.XYZW component.
POSSIBLE VALUES:
00 - SQ_TEX_UNNORMALIZED: Component is in
[0, dim); repeat and mirror modes unavailable.
01 - SQ_TEX_NORMALIZED: Component is in [0,
1]; repeat and mirror modes available.
COORD_TYPE_W
31
none
Indicate the type of the src.XYZW component.
POSSIBLE VALUES:
00 - SQ_TEX_UNNORMALIZED: Component is in
[0, dim); repeat and mirror modes unavailable.
01 - SQ_TEX_NORMALIZED: Component is in [0,
1]; repeat and mirror modes available.
SQ_MICRO:SQ_TEX_WORD2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Texture fetch clause instruction word 2.
Field Name
Bits
Default
Description
OFFSET_X
4:0
none
Value added to X component of texel address before
sampling (in texel space). S3.1 fixpoint value ranging
from [-8, 8).
OFFSET_Y
9:5
none
Value added to Y component of texel address before
sampling (in texel space). S3.1 fixpoint value ranging
from [-8, 8).
OFFSET_Z
14:10
none
Value added to Z component of texel address before
sampling (in texel space). S3.1 fixpoint value ranging
from [-8, 8).
SAMPLER_ID
19:15
none
Sampler ID to use (specifies filter options, etc.). Value in
the range [0, 17].
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SRC_SEL_X
22:20
none
April 26, 2011
Indicate component source for src.XYZW.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SRC_SEL_Y
25:23
none
Indicate component source for src.XYZW.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SRC_SEL_Z
28:26
none
Indicate component source for src.XYZW.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SRC_SEL_W
31:29
none
Indicate component source for src.XYZW.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SQ_MICRO:SQ_MEM_GDS_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory: Global data share instruction word 0.
Field Name
Bits
Default
Description
MEM_INST
4:0
none
Opcode, borrowed from vertex fetch instruction set.
Must be SQ_MEM_INST_MEM.
POSSIBLE VALUES:
02 - SQ_MEM_INST_MEM: memory read/write.
This opcode is exlusively for MEM_RD_WORD* and
GDS_WORD* encodings.
MEM_OP
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10:8
none
Sub-opcode for GDS read/writes or TF-buffer writes.
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The sub-opcode MUST match the CF_INST opcode used
to issue the clause, as indicated below.
POSSIBLE VALUES:
00 - SQ_MEM_OP_RD_SCRATCH: Scratch (temp)
buffer read. Only for use in CF_INST_VC/TC[_ACK]
clause.
02 - SQ_MEM_OP_RD_SCATTER: Scatter (memexport) buffer read. Only for use in
CF_INST_VC/TC[_ACK] clause.
04 - SQ_MEM_OP_GDS: Global Data sharing read
or write. Only for use in CF_INST_GDS clause.
05 - SQ_MEM_OP_TF_WRITE: Tesselation Buffer
write. Only for use in CF_INST_GDS clause.
SRC_GPR
17:11
none
Source GPR (supplies data to GDS or TF-buffer).
TF_write: X=(tf_idx + tf_base), Y=tf_lod, Z=unused.
SRC_REL_MODE
19:18
none
Indicate whether source-GPR is absolute or relative to an
index, or global-gpr.
POSSIBLE VALUES:
00 - SQ_REL_NONE: Normal mode - no offset
applied to GPR address.
01 - SQ_REL_LOOP: add current loop index value.
02 - SQ_REL_GLOBAL: treat gpr address as
absolute, not thread-relative.
SRC_SEL_X
22:20
none
Select source component from GPR.xzyw01. Unused
components should be set to zero.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SRC_SEL_Y
25:23
none
Select source component from GPR.xzyw01. Unused
components should be set to zero.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SRC_SEL_Z
28:26
none
Select source component from GPR.xzyw01. Unused
components should be set to zero.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
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01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SQ_MICRO:SQ_MEM_GDS_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory: Global data share instruction word 1.
Field Name
Bits
Default
Description
DST_GPR
6:0
none
For GDS ops which return data, indicates which GPR to
return data to. Ops which return 1 value write the X
channel, ops which return 2 values write to X and Y.
Ignored if not return value or TF_WRITE.
DST_REL_MODE
8:7
none
Indicate whether source-GPR is absolute or relative to an
index, or global-gpr. Ignored if not return value or
TF_WRITE.
POSSIBLE VALUES:
00 - SQ_REL_NONE: Normal mode - no offset
applied to GPR address.
01 - SQ_REL_LOOP: add current loop index value.
02 - SQ_REL_GLOBAL: treat gpr address as
absolute, not thread-relative.
GDS_OP
14:9
none
Global Data Share operation. Ignored for TF-write.
POSSIBLE VALUES:
00 - SQ_DS_INST_ADD: OP(dst,src, ...)
dst=src0_sel, src=src1_sel.
1A1D ADD(dst,src) : DS(dst) += src. dst is src0_sel, src
is src1_sel.
01 - SQ_DS_INST_SUB: 1A1D SUB(dst,src) :
DS(dst) = DS(dst) - src
02 - SQ_DS_INST_RSUB: 1A1D RSUB(dst,src):
DS(dst) = src - DS(dst)
03 - SQ_DS_INST_INC: 1A1D INC(dst) :
(DS(dst)>=src) ? DS(dst) = 0 : DS(dst)++
04 - SQ_DS_INST_DEC: 1A1D DEC(dst) : DS(dst)
= ((DS(dst)==0) || (DS(dst)>src)) ? src : DS(dst)-1
05 - SQ_DS_INST_MIN_INT: 1A1D MIN(dst,src) :
DS(dst) = min (DS(dst),src)
06 - SQ_DS_INST_MAX_INT: 1A1D MAX(dst,src)
: DS(dst) = max(DS(dst),src)
07 - SQ_DS_INST_MIN_UINT: 1A1D MIN(dst,src)
: DS(dst) = min (DS(dst),src)
08 - SQ_DS_INST_MAX_UINT: 1A1D
MAX(dst,src) : DS(dst) = max(DS(dst),src)
09 - SQ_DS_INST_AND: 1A1D AND(dst,src) :
DS(dst) &= src
10 - SQ_DS_INST_OR: 1A1D OR(dst,src) : DS(dst)
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|= src
11 - SQ_DS_INST_XOR: 1A1D XOR(dst,src) :
DS(dst) ^= src
12 - SQ_DS_INST_MSKOR: 1A2D
MKSOR(dst,mask,src) : DS(dst) = ((DS(dst) & ~msk) |
src).
13 - SQ_DS_INST_WRITE: 1A1D WRITE(dst,src) :
DS(dst) = src
14 - SQ_DS_INST_WRITE_REL: 1A2D
WRITEREL(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset (offset in dwords). DS(dst) = src0,
DS(tmp) = src1
15 - SQ_DS_INST_WRITE2: 1A2D
WRITE2(dst,src0,src1) : tmp = dst+(sq_DS_idx_offset *
64). DS(dst) = src0, DS(tmp) = src1
16 - SQ_DS_INST_CMP_STORE: 1A2D
CMP_STORE(dst, cmp, src) : DS(dst) = (DS(dst) ==
cmp) ? src : DS(dst)
17 - SQ_DS_INST_CMP_STORE_SPF: 1A2D
CMP_STORE_SPF(dst, cmp, src) : DS(dst) = (DS(dst)
== cmp) ? src : DS(dst)
18 - SQ_DS_INST_BYTE_WRITE: 1A1D
BYTEWRITE (dst, src) : DS(dst) = src[7:0]
19 - SQ_DS_INST_SHORT_WRITE: 1A1D
SHORTWRITE(dst, src) : DS(dst) = src[15:0]
32 - SQ_DS_INST_ADD_RET: 1A1D ADD(dst,src)
: OQA=DS(dst), DS(dst) += src. dst is src0_sel, src is
src1_sel.
33 - SQ_DS_INST_SUB_RET: 1A1D SUB(dst,src) :
OQA=DS(dst), DS(dst) = DS(dst) - src
34 - SQ_DS_INST_RSUB_RET: 1A1D
RSUB(dst,src) : OQA=DS(dst), DS(dst) = src - DS(dst)
35 - SQ_DS_INST_INC_RET: 1A1D INC(dst) :
OQA=DS(dst), (DS(dst)>=src) ? DS(dst) = 0 : DS(dst)++
36 - SQ_DS_INST_DEC_RET: 1A1D DEC(dst) :
OQA=DS(dst), DS(dst) = ((DS(dst)==0) || (DS(dst)>src))
? src : DS(dst)-1
37 - SQ_DS_INST_MIN_INT_RET: 1A1D
MIN(dst,src) : OQA=DS(dst), DS(dst) = min
(DS(dst),src)
38 - SQ_DS_INST_MAX_INT_RET: 1A1D
MAX(dst,src) : OQA=DS(dst), DS(dst) =
max(DS(dst),src)
39 - SQ_DS_INST_MIN_UINT_RET: 1A1D
MIN(dst,src) : OQA=DS(dst), DS(dst) = min
(DS(dst),src)
40 - SQ_DS_INST_MAX_UINT_RET: 1A1D
MAX(dst,src) : OQA=DS(dst), DS(dst) =
max(DS(dst),src)
41 - SQ_DS_INST_AND_RET: 1A1D AND(dst,src)
: OQA=DS(dst), DS(dst) &= src
42 - SQ_DS_INST_OR_RET: 1A1D OR(dst,src) :
OQA=DS(dst), DS(dst) |= src
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43 - SQ_DS_INST_XOR_RET: 1A1D XOR(dst,src)
: OQA=DS(dst), DS(dst) ^= src
44 - SQ_DS_INST_MSKOR_RET: 1A2D
MSKOR(dst,msk,src) : OQA=DS(dst), DS(dst) =
((DS(dst) & ~msk) | src).
45 - SQ_DS_INST_XCHG_RET: 1A1D
Exchange(dst,src) : OQA=DS(dst), DS(dst) = src
46 - SQ_DS_INST_XCHG_REL_RET: 1A2D
ExchangeRel(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset. OQA=DS(dst), OQB=DS(tmp);
DS(dst)=src0, DS(tmp)=src1
47 - SQ_DS_INST_XCHG2_RET: 1A2D
Exchange2(dst,src0,src1) : tmp = dst +
sq_DS_idx_offset*64. OQA=DS(dst), OQB=DS(tmp);
DS(dst)=src0, DS(tmp)=src1
48 - SQ_DS_INST_CMP_XCHG_RET: 1A2D
CompareExchange(dst,cmp,src) : OQA=DS(dst);
(DS(dst)==cmp) ? DS(dst)=src : DS(dst)=DS(dst)
49 - SQ_DS_INST_CMP_XCHG_SPF_RET: 1A2D
CompareExchangeSPF(dst,cmp,src) : OQA=DS(dst);
(DS(dst)==cmp) ? DS(dst)=src : DS(dst)=DS(dst)
50 - SQ_DS_INST_READ_RET: 1A READ(dst) :
OQA = DS(dst)
51 - SQ_DS_INST_READ_REL_RET: 1A
READ_REL(dst) : tmp=dst+sq_DS_idx_offset;
OQA=DS(dst), OQB=DS(tmp)
52 - SQ_DS_INST_READ2_RET: 2A
READ2(dst0,dst1) : OQA=DS(dst0), OQB=DS(dst1)
53 - SQ_DS_INST_READWRITE_RET: 2A1D
READWRITE(dst0,dst1,data) : OQA=DS(dst0),
DS(dst1)=data
54 - SQ_DS_INST_BYTE_READ_RET: 1A
BYTEREAD(dst) : OQA=SignExtend(DS(dst)[7:0])
55 - SQ_DS_INST_UBYTE_READ_RET: 1A
UBYTEREAD(dst) : OQA={24`h0, DS(dst)[7:0]}
56 - SQ_DS_INST_SHORT_READ_RET: 1A
SHORTREAD(dst) : OQA=SignExtend(DS(dst)[15:0]}
57 - SQ_DS_INST_USHORT_READ_RET: 1A
USHORTREAD(dst) : OQA={16`h0, DS(dst)[15:0]}
63 SQ_DS_INST_ATOMIC_ORDERED_ALLOC_RET:
1A GDS-only (intercepted by ordered alloc unit). This
will add the 7 lsb of 1a to a hidden ordered append count
in wave order and return the pre-op value to the specified
destination register. This opcode can only be used by
GDS and with broadcast first set.
DS_OFFSET
22:16
none
DWORD offset for GDS read or write. Ignored for TFwrite.
UAV_INDEX_MODE
25:24
none
add index0, index1, or nothing to the UAV_ID.
POSSIBLE VALUES:
00 - SQ_CF_INDEX_NONE: do not index the
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constant buffer
01 - SQ_CF_INDEX_0: add index0 to the constant
(CB#/T#/S#/UAV#) number
02 - SQ_CF_INDEX_1: add index1 to the constant
(CB#/T#/S#/UAV#) number
03 - SQ_CF_INVALID: invalid
UAV_ID
29:26
none
Identifies append/consume count within group of a
context. Do not use with TF.
ALLOC_CONSUME
30
none
1 = accessing append/consume counter. Ignored for TFwrite and GDS with no return.
BCAST_FIRST_REQ
31
none
GDS should only process and respond to the first active
pixel. Return data is broadcast to all pixels regardless of
active status.
SQ_MICRO:SQ_MEM_GDS_WORD2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory: Global data share instruction word 2.
Field Name
Bits
Default
Description
DST_SEL_X
2:0
none
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Y
5:3
none
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Z
8:6
none
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_W
11:9
none
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
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03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
SQ_MICRO:SQ_MEM_RD_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory-read clause instruction word 0.
Field Name
Bits
Default
Description
MEM_INST
4:0
none
Opcode, borrowed from vertex fetch instruction set.
Must be SQ_MEM_INST_MEM.
POSSIBLE VALUES:
02 - SQ_MEM_INST_MEM: memory read/write.
This opcode is exlusively for MEM_RD_WORD* and
GDS_WORD* encodings.
ELEM_SIZE
6:5
none
Number of DWORDs per element, minus one. This field
is interpreted as a value in [1,2,4] (3 is illegal). The value
from INDEX_GPR and is multiplied by this factor, if
applicable. Normally, ELEMSIZE = 4 DWORDs for
scratch, one DWORD for other types.
FETCH_WHOLE_QUAD
7
none
If set, texture instruction will fetch data for all pixels in
any quad which as at least one pixel valid (result may be
used as source coordinate of a dependent read). If
cleared, texture instruction can ignore inactive pixels. Set
this only in PS stage.
MEM_OP
10:8
none
Sub-opcode for memory reads: scratch & scatter. The
sub-opcode MUST match the CF_INST opcode used to
issue the clause, as indicated below.
POSSIBLE VALUES:
00 - SQ_MEM_OP_RD_SCRATCH: Scratch (temp)
buffer read. Only for use in CF_INST_VC/TC[_ACK]
clause.
02 - SQ_MEM_OP_RD_SCATTER: Scatter (memexport) buffer read. Only for use in
CF_INST_VC/TC[_ACK] clause.
04 - SQ_MEM_OP_GDS: Global Data sharing read
or write. Only for use in CF_INST_GDS clause.
05 - SQ_MEM_OP_TF_WRITE: Tesselation Buffer
write. Only for use in CF_INST_GDS clause.
UNCACHED
11
none
Uncached (cache-bypass) read. Any time you write and
read within one shader pass, it must be uncached.
INDEXED
12
none
Indexed access or not. Indexed includes source-GPR in
address calculation.
SRC_SEL_Y
14:13
none
Retrun data`s LDS write address (from Y), if LDS_REQ
is enable.
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POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
SRC_GPR
22:16
none
Source GPR address to get fetch address from.
SRC_REL
23
none
Indicate whether source address is absolute or relative to
an index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
SRC_SEL_X
25:24
none
Indicate which component of src to use for the fetch
address.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
BURST_CNT
29:26
none
Burst count 0=1-read, 15=16-reads. Array_base and
dst_gpr are incremented for each step in the burst.
LDS_REQ
30
none
The memory read data will write to LDS instead of GPR,
if this bit is enabled.
COALESCED_READ
31
none
This is a coalesced mem read.
SQ_MICRO:SQ_MEM_RD_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory-Read instruction word 1.
Field Name
Bits
Default
Description
DST_GPR
6:0
none
Destination GPR address to write result to.
DST_REL
7
none
Indicate whether destination address is absolute or
relative to an index.
POSSIBLE VALUES:
00 - SQ_ABSOLUTE: no relative addressing.
01 - SQ_RELATIVE: add current loop index value to
this address.
DST_SEL_X
11:9
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
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03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Y
14:12
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_Z
17:15
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DST_SEL_W
20:18
none
Indicate which component of the result to write to
dst.XYZW. Can be used to mask out components when
writing to destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
06 - Reserved
07 - SQ_SEL_MASK: mask out this component
DATA_FORMAT
27:22
none
Indicate vertex data format.
NUM_FORMAT_ALL
29:28
none
Format of returning data (N is the number of bits derived
from DATA_FORMAT and gamma).
POSSIBLE VALUES:
00 - SQ_NUM_FORMAT_NORM: repeating
fraction number (0.N) with range [0, 1] if unsigned, or [-
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1, 1] if signed.
01 - SQ_NUM_FORMAT_INT: integer number
(N.0) with range [0, 2^N] if unsigned, or [-2^M, 2^M] if
signed (M = N - 1).
02 - SQ_NUM_FORMAT_SCALED: integer
number stored as a S23E8 floating-point representation
(1 == 0x3f800000).
FORMAT_COMP_ALL
30
none
Indicate sign of source components.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
SRF_MODE_ALL
31
none
Mapping to use when converting from signed RF to
float.
POSSIBLE VALUES:
00 SQ_SRF_MODE_ZERO_CLAMP_MINUS_ONE:
representation with two -1 representations (one is slightly
past -1 but clamped).
01 - SQ_SRF_MODE_NO_ZERO: OpenGL format
lacking representation for 0.
SQ_MICRO:SQ_MEM_RD_WORD2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x8dfc
DESCRIPTION: Memory-read clause instruction word 2.
Field Name
Bits
Default
Description
ARRAY_BASE
12:0
none
Array base (same definition as export instruction). In
elem-sized units (1,2 or 4 dwords), represents values
0..8191.
ENDIAN_SWAP
17:16
none
Endian control (ignored if USE_CONST_FIELDS = 1).
POSSIBLE VALUES:
00 - SQ_ENDIAN_NONE: no endian swap (XOR by
0)
01 - SQ_ENDIAN_8IN16: 8 bit swap in 16 bit word
(XOR by 1): AABBCCDD -> BBAADDCC
02 - SQ_ENDIAN_8IN32: 8 bit swap in 32 bit word
(XOR by 3): AABBCCDD -> DDCCBBAA
ARRAY_SIZE
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31:20
none
Array size (same definition as export instruction). In
elem-sized units (1,2 or 4 dwords), represents values
1..4096. Used only for SCRATCH read (no effect on
scatter)
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5. Shader Vertex Resource Constants
SQ:SQ_VTX_CONSTANT_WORD0_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30000
DESCRIPTION: Vertex fetch constant state, word 0. Offsets and sizes are defined by
SQ_FETCH_RESOURCE_<wavetype>_OFFSET and SQ_FETCH_RESOURCE_<wavetype>_COUNT.
PS=0..175, VS/ES=176..335, GS=336..495, HS=496..655, LS=656..815, CS=816..991, FS=992..1023. Texture
resources and vertex fetch constants share the same physical registers. There is a stride of 8 dwords between
resources.
Field Name
Bits
Default
Description
BASE_ADDRESS
31:0
0x0
Base address of buffer, aligned in bytes. Low 32 bits
only; see also BASE_ADDRESS_HI.
SQ:SQ_VTX_CONSTANT_WORD1_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30004
DESCRIPTION: Vertex fetch constant state, word 1.
Field Name
Bits
Default
Description
SIZE
31:0
0x0
Size of buffer minus 1, in bytes.
SQ:SQ_VTX_CONSTANT_WORD2_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30008
DESCRIPTION: Vertex fetch constant state, word 2.
Field Name
Bits
Default
Description
BASE_ADDRESS_HI
7:0
0x0
Base address of buffer, aligned in bytes. High 8 bits.
STRIDE
19:8
0x0
Stride of the vertex element, in bytes.
DATA_FORMAT
25:20
0x0
Vertex data format.
NUM_FORMAT_ALL
27:26
0x0
Format of returning data (N is the number of bits derived
from DATA_FORMAT and gamma).
POSSIBLE VALUES:
00 - SQ_NUM_FORMAT_NORM: repeating
fraction number (0.N) with range [0, 1] if unsigned, or [1, 1] if signed.
01 - SQ_NUM_FORMAT_INT: integer number
(N.0) with range [0, 2^N] if unsigned, or [-2^M, 2^M] if
signed (M = N - 1).
02 - SQ_NUM_FORMAT_SCALED: integer
number stored as a S23E8 floating-point representation
(1 == 0x3f800000).
FORMAT_COMP_ALL
28
0x0
Sign of source components.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
SRF_MODE_ALL
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29
0x0
Mapping to use when converting from signed RF to
128
Revision 1.0
April 26, 2011
float.
POSSIBLE VALUES:
00 SQ_SRF_MODE_ZERO_CLAMP_MINUS_ONE:
representation with two -1 representations (one is slightly
past -1 but clamped).
01 - SQ_SRF_MODE_NO_ZERO: OpenGL format
lacking representation for 0.
ENDIAN_SWAP
31:30
0x0
Endian control.
POSSIBLE VALUES:
00 - SQ_ENDIAN_NONE: no endian swap (XOR by
0)
01 - SQ_ENDIAN_8IN16: 8 bit swap in 16 bit word
(XOR by 1): AABBCCDD -> BBAADDCC
02 - SQ_ENDIAN_8IN32: 8 bit swap in 32 bit word
(XOR by 3): AABBCCDD -> DDCCBBAA
SQ:SQ_VTX_CONSTANT_WORD3_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3000c
DESCRIPTION: Vertex fetch constant state, word 3.
Field Name
Bits
Default
Description
CACHE_SWIZZLE
0
0x0
Cache Swizzle.
UNCACHED
2
0x0
Uncached (auto-invalidate) memory read. Typically used
for scratch and mem-export reads.
DST_SEL_X
5:3
0x0
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_Y
8:6
0x0
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_Z
11:9
0x0
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_W
14:12
0x0
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
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01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
SQ:SQ_VTX_CONSTANT_WORD4_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30010
DESCRIPTION: Vertex fetch constant state, word 4.
Field Name
Bits
Default
Description
NUM_ELEMENTS
31:0
0x0
Number of elements in vertex buffer. Used for bufinfo.
SQ:SQ_VTX_CONSTANT_WORD7_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3001c
DESCRIPTION: Vertex fetch constant state, word 7.
Field Name
Bits
Default
Description
TYPE
31:30
0x0
Constant type/state.
POSSIBLE VALUES:
00 - SQ_TEX_VTX_INVALID_TEXTURE
01 - SQ_TEX_VTX_INVALID_BUFFER
02 - SQ_TEX_VTX_VALID_TEXTURE
03 - SQ_TEX_VTX_VALID_BUFFER
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6. Shader Texture Resource Constants
SQ:SQ_TEX_RESOURCE_WORD0_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30000
DESCRIPTION: Texture resource state, word 0. Offsets and sizes are defined by
SQ_FETCH_RESOURCE_<wavetype>_OFFSET and SQ_FETCH_RESOURCE_<wavetype>_COUNT.
PS=0..175, VS/ES=176..335, GS=336..495, HS=496..655, LS=656..815, CS=816..991, FS=992..1023. Texture
resources and vertex fetch constants share the same physical registers. There is a stride of 8 dwords between
resources.
Field Name
Bits
Default Description
DIM
2:0
0x0
Texture dimensionality.
POSSIBLE VALUES:
00 - SQ_TEX_DIM_1D
01 - SQ_TEX_DIM_2D
02 - SQ_TEX_DIM_3D
03 - SQ_TEX_DIM_CUBEMAP
04 - SQ_TEX_DIM_1D_ARRAY
05 - SQ_TEX_DIM_2D_ARRAY
06 - SQ_TEX_DIM_2D_MSAA
07 - SQ_TEX_DIM_2D_ARRAY_MSAA
IGNORE_SHADER_ENGINE_TILING 3
0x0
When asserted TC will force
NUM_SHADER_ENGINES to 0 into the addrlib.
NON_DISP_TILING_ORDER
5:4
0x0
Memory tiling type (Color vs. Depth).
PITCH
17:6
0x0
Pitch minus 1, in units of 8 texels (maximum pitch is
16384).
TEX_WIDTH
31:18
0x0
Width of the texture minus 1.
SQ:SQ_TEX_RESOURCE_WORD1_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30004
DESCRIPTION: Texture resource state, word 1.
Field Name
Bits
Default
Description
TEX_HEIGHT
13:0
0x0
Height of the texture minus 1; number of stacks minus 1,
for 1D arrays.
TEX_DEPTH
26:14
0x0
Depth of the texture minus 1; number of stacks minus 1,
for 2D arrays.
ARRAY_MODE
31:28
0x0
Memory tiling control.
SQ:SQ_TEX_RESOURCE_WORD2_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30008
DESCRIPTION: Texture resource state, word 2.
Field Name
Bits
Default
Description
BASE_ADDRESS
31:0
0x0
256byte-aligned address of the base map (level 0).
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SQ:SQ_TEX_RESOURCE_WORD3_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3000c
DESCRIPTION: Texture resource state, word 3.
Field Name
Bits
Default
Description
MIP_ADDRESS
31:0
0x0
256byte-aligned address of the second map (level 1),
indicating start of the remaining monolithic mipmap
chain.
SQ:SQ_TEX_RESOURCE_WORD4_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30010
DESCRIPTION: Texture resource state, word 4.
Field Name
Bits
Default
Description
FORMAT_COMP_X
1:0
0x0
Sign control for each channel of the data in memory.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
02 - SQ_FORMAT_COMP_UNSIGNED_BIASED
FORMAT_COMP_Y
3:2
0x0
Sign control for each channel of the data in memory.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
02 - SQ_FORMAT_COMP_UNSIGNED_BIASED
FORMAT_COMP_Z
5:4
0x0
Sign control for each channel of the data in memory.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
02 - SQ_FORMAT_COMP_UNSIGNED_BIASED
FORMAT_COMP_W
7:6
0x0
Sign control for each channel of the data in memory.
POSSIBLE VALUES:
00 - SQ_FORMAT_COMP_UNSIGNED
01 - SQ_FORMAT_COMP_SIGNED
02 - SQ_FORMAT_COMP_UNSIGNED_BIASED
NUM_FORMAT_ALL
9:8
0x0
Format of returning data (N is the number of bits derived
from DATA_FORMAT and gamma).
POSSIBLE VALUES:
00 - SQ_NUM_FORMAT_NORM: repeating
fraction number (0.N) with range [0, 1] if unsigned, or [1, 1] if signed.
01 - SQ_NUM_FORMAT_INT: integer number
(N.0) with range [0, 2^N] if unsigned, or [-2^M, 2^M] if
signed (M = N - 1).
02 - SQ_NUM_FORMAT_SCALED: integer
number stored as a S23E8 floating-point representation
(1 == 0x3f800000).
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SRF_MODE_ALL
10
0x0
April 26, 2011
Mapping to use when converting from signed
RF/unsigned RF biased to float.
POSSIBLE VALUES:
00 SQ_SRF_MODE_ZERO_CLAMP_MINUS_ONE:
representation with two -1 representations (one is slightly
past -1 but clamped).
01 - SQ_SRF_MODE_NO_ZERO: OpenGL format
lacking representation for 0.
FORCE_DEGAMMA
11
0x0
If set, forces degamma on XYZ if format is
FMT_8_8_8_8, FMT_BC1, FMT_BC2, or FMT_BC3
(required for DX9 compliance). If cleared, normal
behaviour unless FORCE_DEGAMMA in sampler state
is set.
ENDIAN_SWAP
13:12
0x0
Endian control.
POSSIBLE VALUES:
00 - SQ_ENDIAN_NONE: no endian swap (XOR by
0)
01 - SQ_ENDIAN_8IN16: 8 bit swap in 16 bit word
(XOR by 1): AABBCCDD -> BBAADDCC
02 - SQ_ENDIAN_8IN32: 8 bit swap in 32 bit word
(XOR by 3): AABBCCDD -> DDCCBBAA
LOG2_NUM_FRAGMENTS
15:14
0x0
Log2 of fragment.
DST_SEL_X
18:16
0x0
What component of returning data to write to each
channel of the destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_Y
21:19
0x0
What component of returning data to write to each
channel of the destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_Z
24:22
0x0
What component of returning data to write to each
channel of the destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
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01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
DST_SEL_W
27:25
0x0
What component of returning data to write to each
channel of the destination GPR.
POSSIBLE VALUES:
00 - SQ_SEL_X: use X component
01 - SQ_SEL_Y: use Y component
02 - SQ_SEL_Z: use Z component
03 - SQ_SEL_W: use W component
04 - SQ_SEL_0: use constant 0.0
05 - SQ_SEL_1: use constant 1.0
BASE_LEVEL
31:28
0x0
Absolute index of largest mipmap level we can use (0 ==
largest), applied post-min/mag determination. Has
precedence over NUM_LEVELS. Effectively redefines
the size of hte base map to the one BASE_LEVEL points
at (affects min/mag switch point).
SQ:SQ_TEX_RESOURCE_WORD5_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30014
DESCRIPTION: Texture resource state, word 5.
Field Name
Bits
Default
Description
LAST_LEVEL
3:0
0x0
Absolute index of smallest mipmap level we can use
(should be >= BASE_LEVEL). The value is NOT
relative to BASE_LEVEL.
BASE_ARRAY
16:4
0x0
Absolute index of first valid array slice to use.
LAST_ARRAY
29:17
0x0
Absolute index of last valid array slice to use. For
cubemaps and cubemap arrays, LAST_ARRAY must be
programmed with BASE_ARRAY + (N*6) - 1, where N
is the number of cubemaps in the array, or N=1 for a
single cubemap.
SQ:SQ_TEX_RESOURCE_WORD6_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x30018
DESCRIPTION: Texture resource state, word 6.
Field Name
Bits
Default
Reserved
2:0
0x0
PERF_MODULATION
5:3
0x0
Scale factor used to scale down sampler`s PERF_MIP,
PERF_Z, and LOD_BIAS_SEC values. Effectively
corresponds to a 3b RF number used to scale the abovementioned values.
INTERLACED
6
0x0
If set, the format is stored interlaced.
MIN_LOD
19:8
0x0
MIN LOD clamp, applied after sampler clamp. U4.8
format.
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Description
134
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TILE_SPLIT
31:29
0x0
April 26, 2011
Specifies the number of bytes that will be stored
contiguously for each tile. If the tile data requires more
storage than this amount, it is split into multiple slices.
This field must not be larger than
GB_ADDR_CONFIG.DRAM_ROW_SIZE. Applies
only to 2D tiling modes.
POSSIBLE VALUES:
00 - SQ_ADDR_SURF_TILE_SPLIT_64B
01 - SQ_ADDR_SURF_TILE_SPLIT_128B
02 - SQ_ADDR_SURF_TILE_SPLIT_256B
03 - SQ_ADDR_SURF_TILE_SPLIT_512B
04 - SQ_ADDR_SURF_TILE_SPLIT_1KB
05 - SQ_ADDR_SURF_TILE_SPLIT_2KB
06 - SQ_ADDR_SURF_TILE_SPLIT_4KB
SQ:SQ_TEX_RESOURCE_WORD7_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3001c
DESCRIPTION: Texture resource state, word 7.
Field Name
Bits
Default
Description
DATA_FORMAT
5:0
0x0
Data format of each texel in the texture.
MACRO_TILE_ASPECT
7:6
0x0
Specifies the macro tile aspect ratio.
POSSIBLE VALUES:
00 - SQ_ADDR_SURF_MACRO_ASPECT_1
01 - SQ_ADDR_SURF_MACRO_ASPECT_2
02 - SQ_ADDR_SURF_MACRO_ASPECT_4
03 - SQ_ADDR_SURF_MACRO_ASPECT_8
BANK_WIDTH
9:8
0x0
Specifies the number of tiles in the X direction to be
incorporated into the same bank.
POSSIBLE VALUES:
00 - SQ_ADDR_SURF_BANK_WH_1
01 - SQ_ADDR_SURF_BANK_WH_2
02 - SQ_ADDR_SURF_BANK_WH_4
03 - SQ_ADDR_SURF_BANK_WH_8
BANK_HEIGHT
11:10
0x0
Specifies the number of tiles in the Y direction to be
incorporated into the same bank.
POSSIBLE VALUES:
00 - SQ_ADDR_SURF_BANK_WH_1
01 - SQ_ADDR_SURF_BANK_WH_2
02 - SQ_ADDR_SURF_BANK_WH_4
03 - SQ_ADDR_SURF_BANK_WH_8
DEPTH_SAMPLE_ORDER
15
0x0
Indicates if samples are stored consecutively per element.
Depth and stencil surfaces implicitly utilize this sample
order.
NUM_BANKS
17:16
0x0
Specifies the number of banks for tiling purposes.
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POSSIBLE VALUES:
00 - SQ_ADDR_SURF_2_BANK
01 - SQ_ADDR_SURF_4_BANK
02 - SQ_ADDR_SURF_8_BANK
03 - SQ_ADDR_SURF_16_BANK
TYPE
31:30
0x0
Constant type/state.
POSSIBLE VALUES:
00 - SQ_TEX_VTX_INVALID_TEXTURE
01 - SQ_TEX_VTX_INVALID_BUFFER
02 - SQ_TEX_VTX_VALID_TEXTURE
03 - SQ_TEX_VTX_VALID_BUFFER
SQ:SQ_TEX_RESOURCE_CLEAR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x3ff04
DESCRIPTION: Clear all texture/vertex-buffer constants, for all shader stages. write only.
Field Name
Bits
Default
Description
CLR
31:0
0x0
clear constants. 0xffffffff = clear all constants, other
values indicate individual constant number to clear.
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7. Shader Texture Sampler Constants
SQ:SQ_TEX_SAMPLER_WORD0_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3c000
DESCRIPTION: Texture sampler state, word 0. Offsets and sizes are defined by
SQ_TEX_SAMPLER_<wavetype>_OFFSET and SQ_TEX_SAMPLER_<wavetype>_COUNT. PS=0..17,
VS/ES=18..35, GS=36..53, HS=54..71, LS=72..89, CS=90..107. There is a stride of 3 dwords between samplers.
Field Name
Bits
Default
Description
CLAMP_X
2:0
0x0
Clamp mode for each texture coordinate.
POSSIBLE VALUES:
00 - SQ_TEX_WRAP
01 - SQ_TEX_MIRROR
02 - SQ_TEX_CLAMP_LAST_TEXEL: [0,1]
normalized, [0,dimen] unnormalized
03 - SQ_TEX_MIRROR_ONCE_LAST_TEXEL: [1,1]
04 - SQ_TEX_CLAMP_HALF_BORDER: [0,1]
normalized, [0,dimen] unnormalized
05 - SQ_TEX_MIRROR_ONCE_HALF_BORDER:
[-1,1]
06 - SQ_TEX_CLAMP_BORDER: [0,1]
normalized, [0,dimen] unnormalized
07 - SQ_TEX_MIRROR_ONCE_BORDER: [-1,1]
CLAMP_Y
5:3
0x0
Clamp mode for each texture coordinate.
POSSIBLE VALUES:
00 - SQ_TEX_WRAP
01 - SQ_TEX_MIRROR
02 - SQ_TEX_CLAMP_LAST_TEXEL: [0,1]
normalized, [0,dimen] unnormalized
03 - SQ_TEX_MIRROR_ONCE_LAST_TEXEL: [1,1]
04 - SQ_TEX_CLAMP_HALF_BORDER: [0,1]
normalized, [0,dimen] unnormalized
05 - SQ_TEX_MIRROR_ONCE_HALF_BORDER:
[-1,1]
06 - SQ_TEX_CLAMP_BORDER: [0,1]
normalized, [0,dimen] unnormalized
07 - SQ_TEX_MIRROR_ONCE_BORDER: [-1,1]
CLAMP_Z
8:6
0x0
Clamp mode for each texture coordinate.
POSSIBLE VALUES:
00 - SQ_TEX_WRAP
01 - SQ_TEX_MIRROR
02 - SQ_TEX_CLAMP_LAST_TEXEL: [0,1]
normalized, [0,dimen] unnormalized
03 - SQ_TEX_MIRROR_ONCE_LAST_TEXEL: [1,1]
04 - SQ_TEX_CLAMP_HALF_BORDER: [0,1]
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normalized, [0,dimen] unnormalized
05 - SQ_TEX_MIRROR_ONCE_HALF_BORDER:
[-1,1]
06 - SQ_TEX_CLAMP_BORDER: [0,1]
normalized, [0,dimen] unnormalized
07 - SQ_TEX_MIRROR_ONCE_BORDER: [-1,1]
XY_MAG_FILTER
10:9
0x0
Defines the filter to use on X and Y when
magnifying/minifying.
POSSIBLE VALUES:
00 - SQ_TEX_XY_FILTER_POINT
01 - SQ_TEX_XY_FILTER_BILINEAR
XY_MIN_FILTER
12:11
0x0
Defines the filter to use on X and Y when
magnifying/minifying.
POSSIBLE VALUES:
00 - SQ_TEX_XY_FILTER_POINT
01 - SQ_TEX_XY_FILTER_BILINEAR
Z_FILTER
14:13
0x0
Defines the filter to use between Z layers/mip levels.
POSSIBLE VALUES:
00 - SQ_TEX_Z_FILTER_NONE
01 - SQ_TEX_Z_FILTER_POINT
02 - SQ_TEX_Z_FILTER_LINEAR
MIP_FILTER
16:15
0x0
Defines the filter to use between Z layers/mip levels.
POSSIBLE VALUES:
00 - SQ_TEX_Z_FILTER_NONE
01 - SQ_TEX_Z_FILTER_POINT
02 - SQ_TEX_Z_FILTER_LINEAR
Reserved
19:17
0x0
BORDER_COLOR_TYPE
21:20
0x0
Source of border colour when a border is hit.
POSSIBLE VALUES:
00 SQ_TEX_BORDER_COLOR_TRANS_BLACK: (0.0,
0.0, 0.0, 0.0)
01 SQ_TEX_BORDER_COLOR_OPAQUE_BLACK:
(0.0, 0.0, 0.0, 1.0)
02 SQ_TEX_BORDER_COLOR_OPAQUE_WHITE: (1.0,
1.0, 1.0, 1.0)
03 - SQ_TEX_BORDER_COLOR_REGISTER: use
BORDER_COLOR_[XYZW]
DEPTH_COMPARE_FUNCTION 24:22
0x0
Depth comparison function to use for any SAMPLE_C*
instruction.
POSSIBLE VALUES:
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00 - SQ_TEX_DEPTH_COMPARE_NEVER:
always 0
01 - SQ_TEX_DEPTH_COMPARE_LESS: 1 if
incoming Z < fetched data
02 - SQ_TEX_DEPTH_COMPARE_EQUAL: 1 if
incoming Z == fetched data
03 - SQ_TEX_DEPTH_COMPARE_LESSEQUAL:
1 if incoming Z <= fetched data
04 - SQ_TEX_DEPTH_COMPARE_GREATER: 1
if incoming Z > fetched data
05 - SQ_TEX_DEPTH_COMPARE_NOTEQUAL:
1 if incoming Z != fetched data
06 SQ_TEX_DEPTH_COMPARE_GREATEREQUAL: 1
if incoming Z >= fetched data
07 - SQ_TEX_DEPTH_COMPARE_ALWAYS:
always 1
FORCE_UNNORMALIZED
25
0x0
Reserved
29:27
0x0
Force Un-normalized.
SQ:SQ_TEX_SAMPLER_WORD1_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3c004
DESCRIPTION: Texture sampler state, word 1.
Field Name
Bits
Default
Description
MIN_LOD
11:0
0x0
LOD lower bound applied to computed LOD before
determining min/mag. Format is u4.8, range [0, 16).
MAX_LOD
23:12
0x0
LOD upper bound applied to computed LOD before
determining min/mag. Format is u4.8, range [0, 16).
PERF_MIP
27:24
0x0
Performance setting for mipmap transition. Remaps
fractional bit of LOD using one of 7 lookup tables (0 =
fraction is untouched).
PERF_Z
31:28
0x0
Performance setting for volume layer transition. Remaps
fractional bit of Z using one of 4 lookup tables (0 =
fraction is untouched).
SQ:SQ_TEX_SAMPLER_WORD2_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3c008
DESCRIPTION: Texture sampler state, word 2.
Field Name
Bits
Default
Description
LOD_BIAS
13:0
0x0
LOD bias to apply after computing the mipmap but
before applying MIN_LOD (hence before min/mag
determination). Bias is 2`s complement s6.8 with range
[-32, 32).
LOD_BIAS_SEC
19:14
0x0
Secondary LOD bias added after LOD bias. Used to
alleviate small batch issues on OpenGL. Bias is 2`s
complement S1.4 with range [-2, 2).
MC_COORD_TRUNCATE
20
0x0
If set, keep only MSB of fractional part of coordinate
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(for MPEG). If cleared, don`t truncate fractions.
FORCE_DEGAMMA
21
0x0
If set, forces degamma on XYZ if format is
FMT_8_8_8_8, FMT_BC1, FMT_BC2, or FMT_BC3
(required for DX9 compliance). If cleared, normal
behaviour unless FORCE_DEGAMMA in resource state
is set.
Reserved
27:22
0x0
TRUNCATE_COORD
28
0x0
1=truncate when point sampling; 0=round-nearest-even
to n.6 and drop fraction when point sampling.
DISABLE_CUBE_WRAP
29
0x0
1=disable cubemap wrapping for non-point sampled
cubemaps (dx9). 0=allow cubemap wrapping (dx10)
TYPE
31
0x0
Sampler type. If set, the sampler is valid.
SQ:SQ_TEX_SAMPLER_CLEAR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x3ff00
DESCRIPTION: Clear all texture sampler constants, for all shader stages. write only.
Field Name
Bits
Default
Description
CLR
31:0
0x0
clear constants. 0xffffffff = clear all constants, other
values indicate individual constant number to clear.
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8. Shader Constant Registers
SQ:SQ_ALU_CONST_BUFFER_SIZE_GS_[0-15] · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x281c0-0x281fc
DESCRIPTION: (8-state). Number of elements in this constant buffer [0..4096], in units of 16 constants (cache
lines). Associated with SQ_ALU_CONST_CACHE_GS_0. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
Bits
Default
Description
DATA
8:0
0x0
Number of constant buffer elements
SQ:SQ_ALU_CONST_BUFFER_SIZE_HS_[0-15] · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28f80-0x28fbc
DESCRIPTION: (8-state). Number of elements in this constant buffer [0..4096], in units of 16 constants (cache
lines). Associated with SQ_ALU_CONST_CACHE_HS_0. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
Bits
Default
Description
DATA
8:0
0x0
Number of constant buffer elements
SQ:SQ_ALU_CONST_BUFFER_SIZE_LS_[0-15] · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28fc0-0x28ffc
DESCRIPTION: (8-state). Number of elements in this constant buffer [0..4096], in units of 16 constants (cache
lines). Associated with SQ_ALU_CONST_CACHE_LS_0. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
Bits
Default
Description
DATA
8:0
0x0
Number of constant buffer elements
SQ:SQ_ALU_CONST_BUFFER_SIZE_PS_[0-15] · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28140-0x2817c
DESCRIPTION: (8-state). Number of elements in this constant buffer [0..4096], in units of 16 constants (cache
lines). Associated with SQ_ALU_CONST_CACHE_PS_0. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
Bits
Default
Description
DATA
8:0
0x0
Number of constant buffer elements
SQ:SQ_ALU_CONST_BUFFER_SIZE_VS_[0-15] · [R/W] · 32 bits · Access: 32 ·
GpuF0MMReg:0x28180-0x281bc
DESCRIPTION: (8-state). Number of elements in this constant buffer [0..4096], in units of 16 constants (cache
lines). Associated with SQ_ALU_CONST_CACHE_VS_0. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
141
Revision 1.0
DATA
8:0
0x0
April 26, 2011
Number of constant buffer elements
SQ:SQ_ALU_CONST_CACHE_GS_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x289c00x289fc
DESCRIPTION: (8-state) Base address of constant-buffer #0 used by the constant cache, 256B aligned address
[39:8]. You must always write both CONST_BUFFER_SIZE and CONST_CACHE, unless size=0 in which case you
may write only size.
Field Name
Bits
Default
Description
DATA
31:0
0x0
TBD
SQ:SQ_ALU_CONST_CACHE_HS_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28f000x28f3c
DESCRIPTION: (8-state) Base address of constant-buffer #0 used by the constant cache, 256B aligned address
[39:8]. You must always write both CONST_BUFFER_SIZE and CONST_CACHE, unless size=0 in which case you
may write only size.
Field Name
Bits
Default
Description
DATA
31:0
0x0
TBD
SQ:SQ_ALU_CONST_CACHE_LS_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28f400x28f7c
DESCRIPTION: (8-state) Base address of constant-buffer #0 used by the constant cache, 256B aligned address
[39:8]. You must always write both CONST_BUFFER_SIZE and CONST_CACHE, unless size=0 in which case you
may write only size.
Field Name
Bits
Default
Description
DATA
31:0
0x0
TBD
SQ:SQ_ALU_CONST_CACHE_PS_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x289400x2897c
DESCRIPTION: (8-state) Base address of constant-buffer #0 used by the constant cache, 256B aligned address
[39:8]. You must always write both CONST_BUFFER_SIZE and CONST_CACHE, unless size=0 in which case you
may write only size.
Field Name
Bits
Default
Description
DATA
31:0
0x0
TBD
SQ:SQ_ALU_CONST_CACHE_VS_[0-15] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x289800x289bc
DESCRIPTION: (8-state) Base address of constant-buffer #0 used by the constant cache, 256B aligned address
[39:8]. Used by both VS and ES shaders. You must always write both CONST_BUFFER_SIZE and
CONST_CACHE, unless size=0 in which case you may write only size.
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
142
Revision 1.0
DATA
31:0
0x0
April 26, 2011
TBD
SQ:SQ_BOOL_CONST_[0-5] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3a500-0x3a514
DESCRIPTION: (64-state) DX9 Boolean constants - these are available as input to flow control instructions such
as `IF`. Each boolean is 32 bits. PS=0, VS/ES=1, GS=2, HS=3, LS=4, CS=5. The booleans are usable in both dx9
and dx10 modes.
Field Name
Bits
Default
Description
BOOLEANS
31:0
0x0
32 one-bit booleans for static branching
SQ:SQ_JUMPTABLE_CONST_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3a200
DESCRIPTION: (64-state) Jumptable constants- shared with loop constants. Used with
SQ_CF_INST_JUMPTABLE to select the offset when CF_JUMPTABLE_SEL field is CONST_A through
CONST_D.
Field Name
Bits
Default
Description
CONST_A
7:0
0x0
Jumptable offset A (unsigned)
CONST_B
15:8
0x0
Jumptable offset B (unsigned)
CONST_C
23:16
0x0
Jumptable offset C (unsigned)
CONST_D
31:24
0x0
Jumptable offset D (unsigned)
SQ:SQ_LOOP_BOOL_CLEAR · [W] · 32 bits · Access: 32 · GpuF0MMReg:0x3ff08
DESCRIPTION: Clear all Loop and boolean constants, for all shader stages. write only.
Field Name
Bits
Default
Description
CLR
31:0
0x0
clear constants. 0xffffffff = clear all constants, other
values indicate individual constant number to clear. Note
that loop constants are 0..191, and booleans are 192..197
(corresponding to bool0 to bool5).
SQ:SQ_LOOP_CONST_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3a200
DESCRIPTION: (64-state) DX9 loop counter constants - these are used to define the behaviour of a programmed
loop. There are 96 loop counter constants available - 32 each for the PS, VS/ES, GS, HS, LS, CS. PS=0..31,
VS/ES=32..63, GS=64..95, HS=96..127, LS=128..159, CS=160..191. The loop counter is usable in both DX9 and
DX10 modes. This version is used for SQ_CF_INST_LOOP and SQ_CF_INST_LOOP_NO_AL statements.
Field Name
Bits
Default
Description
COUNT
11:0
0x0
Total number of loop iterations (unsigned)
INIT
23:12
0x0
Initial value of loop counter AL (unsigned)
INC
31:24
0x0
Amount loop counter increments after each loop iteration
(signed)
SQ:SQ_LOOP_CONST_DX10_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x3a200
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DESCRIPTION: (64-state) DX9 loop counter constants - these are used to define the behaviour of a programmed
loop. The loop counter is usable in both DX9 and DX10 modes. This version is used for SQ_CF_INST_LOOP_DX10
statements.
Field Name
Bits
Default
Description
COUNT
31:0
0x0
Total number of loop iterations (unsigned)
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9. Shader Program Setup Registers
SQ:SQ_PGM_EXPORTS_PS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2884c
DESCRIPTION: (8-state). Defines the exports from the Pixel Shader Program.
Field Name
Bits
Default
Description
EXPORT_MODE
4:0
0x0
Pixel Shader export mode. bbbbz where bbbb is how
many color we export (0-8) and z is export z or not. It is
illegal to program this to all zeros.
SQ:SQ_PGM_RESOURCES_2_ES · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28894
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
ALLOW_SINGLE_DENORM_IN
4
0x0
ALLOW_SINGLE_DENORM_OUT 5
0x0
ALLOW_DOUBLE_DENORM_IN
6
0x0
ALLOW_DOUBLE_DENORM_OUT 7
0x0
SINGLE_IEEE_MODE
8
0x0
DOUBLE_IEEE_MODE
9
0x0
SQ:SQ_PGM_RESOURCES_2_GS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2887c
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
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positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
ALLOW_SINGLE_DENORM_IN
4
0x0
ALLOW_SINGLE_DENORM_OUT 5
0x0
ALLOW_DOUBLE_DENORM_IN
6
0x0
ALLOW_DOUBLE_DENORM_OUT 7
0x0
SINGLE_IEEE_MODE
8
0x0
DOUBLE_IEEE_MODE
9
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
SQ:SQ_PGM_RESOURCES_2_HS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288c0
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
ALLOW_SINGLE_DENORM_IN
4
0x0
ALLOW_SINGLE_DENORM_OUT 5
0x0
ALLOW_DOUBLE_DENORM_IN
6
0x0
ALLOW_DOUBLE_DENORM_OUT 7
0x0
SINGLE_IEEE_MODE
8
0x0
DOUBLE_IEEE_MODE
9
0x0
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SQ:SQ_PGM_RESOURCES_2_LS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288d8
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
ALLOW_SINGLE_DENORM_IN
4
0x0
ALLOW_SINGLE_DENORM_OUT 5
0x0
ALLOW_DOUBLE_DENORM_IN
6
0x0
ALLOW_DOUBLE_DENORM_OUT 7
0x0
SINGLE_IEEE_MODE
8
0x0
DOUBLE_IEEE_MODE
9
0x0
SQ:SQ_PGM_RESOURCES_2_PS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28848
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
Rounding mode for single-floats
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
Rounding mode for double-floats
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
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02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
ALLOW_SINGLE_DENORM_IN
4
0x0
Denormal handling for single floats: 0 = flush input
denormals, 1 = allow input denormals.
ALLOW_SINGLE_DENORM_OUT 5
0x0
Denormal handling for single floats: 0 = flush output
denormals, 1 = allow output denormals.
ALLOW_DOUBLE_DENORM_IN
6
0x0
Denormal handling for double floats: 0 = flush input
denormals, 1 = allow input denormals.
ALLOW_DOUBLE_DENORM_OUT 7
0x0
Denormal handling for double floats: 0 = flush output
denormals, 1 = allow output denormals.
SINGLE_IEEE_MODE
8
0x0
IEEE mode for single-floats
DOUBLE_IEEE_MODE
9
0x0
IEEE mode for double-floats
SQ:SQ_PGM_RESOURCES_2_VS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28864
DESCRIPTION: Additional shader resources
Field Name
Bits
Default
Description
SINGLE_ROUND
1:0
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
DOUBLE_ROUND
3:2
0x0
POSSIBLE VALUES:
00 - SQ_ROUND_NEAREST_EVEN: Round to
nearest even
01 - SQ_ROUND_PLUS_INFINITY: Round to
positive infinity
02 - SQ_ROUND_MINUS_INFINITY: Round to
negative infinity
03 - SQ_ROUND_TO_ZERO: Round to zero
ALLOW_SINGLE_DENORM_IN
4
0x0
ALLOW_SINGLE_DENORM_OUT 5
0x0
ALLOW_DOUBLE_DENORM_IN
6
0x0
ALLOW_DOUBLE_DENORM_OUT 7
0x0
SINGLE_IEEE_MODE
8
0x0
DOUBLE_IEEE_MODE
9
0x0
SQ:SQ_PGM_RESOURCES_ES · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28890
DESCRIPTION: (8-state). Resource requirements to run the ES program. Can only read most recent version, not
all 8 states.
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
148
Revision 1.0
April 26, 2011
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
USE_LS_CONSTS
16
0x0
1=uses LS consts, 0=uses VS consts
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN. See SP doc for details.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
SQ:SQ_PGM_RESOURCES_FS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288a8
DESCRIPTION: (8-state). Resource requirements to run the FS program. The FS shares with either the VS (gs-off)
or ES (gs-on) and performs a single allocation equal to the VS+FS or ES+FS resource requirements. The SPI
allocates stack space as (VS/ES + FS_stack_size) in the same manner as GPRs. Max_call_depth and
fetch_cache_lines will be inherited from the parent shader (VS or ES). Can only read most recent version, not all 8
states.
Field Name
Bits
Default
Description
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN.
SQ:SQ_PGM_RESOURCES_GS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28878
DESCRIPTION: (8-state). Resource requirements to run the GS program. Can only read most recent version, not
all 8 states.
Field Name
Bits
Default
Description
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
SQ:SQ_PGM_RESOURCES_HS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288bc
DESCRIPTION: (8-state). Resource requirements to run the HS program. Can only read most recent version, not
all 8 states.
Field Name
Bits
Default
Description
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
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DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output clamp
treats NaN.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
SQ:SQ_PGM_RESOURCES_LS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288d4
DESCRIPTION: (8-state). Resource requirements to run the LS program. Can only read most recent version, not
all 8 states.
Field Name
Bits
Default
Description
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
USE_VS_CONSTS
16
0x0
1=uses VS constants, 0=uses LS constants
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN. See SP doc for details.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
SQ:SQ_PGM_RESOURCES_PS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28844
DESCRIPTION: (8-state). Resource requirements to run the PS program. Can only read most recent version, not
all 8 states.
Field Name
Bits
Default
Description
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
CLAMP_CONSTS
31
0x0
Clamp ALU constants to [-1.0, 1.0]. Used for shader
versions below PS2.0. Applies only to Constant-file
constants (not literals) and only to const-file entries 0..7.
Other entries are never clamped.
SQ:SQ_PGM_RESOURCES_VS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28860
DESCRIPTION: (8-state). Resource requirements to run the VS program. Can only read most recent version, not
all 8 states.
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
150
Revision 1.0
April 26, 2011
NUM_GPRS
7:0
0x0
number of GPRs required to run this program [0..127]
STACK_SIZE
15:8
0x0
number of stack entries needed [0..255]
USE_LS_CONSTS
16
0x0
1=uses LS consts, 0=uses VS consts
DX10_CLAMP
21
0x0
DX10 clamp mode. (1 = dx10 mode, 0 = dx9 mode). This
applies to all shaders. This affects how the SP output
clamp treats NaN. See SP doc for details.
UNCACHED_FIRST_INST
28
0x0
Ensure that the first instruction is not read from the first
instruction cache. Should only be used for debugging if
there is a problem with the cache.
SQ:SQ_PGM_START_ES · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2888c
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
export shader (ES)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
SQ:SQ_PGM_START_FS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288a4
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
fetch shader (FS)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
SQ:SQ_PGM_START_GS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28874
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
geometry shader (GS)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
SQ:SQ_PGM_START_HS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288b8
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
hull shader (HS)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
SQ:SQ_PGM_START_LS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x288d0
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
Vertex-to-LDS shader (LS)
Field Name
© 2011 Advanced Micro Devices, Inc.
Proprietary
Bits
Default
Description
151
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PGM_START
31:0
0x0
April 26, 2011
Format is [39:8]
SQ:SQ_PGM_START_PS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28840
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
pixel shader (PS)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
SQ:SQ_PGM_START_VS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2885c
DESCRIPTION: (8-state) Memory address of the (256-byte aligned) first CF instruction of the shader code for the
vertex shader (VS)
Field Name
Bits
Default
Description
PGM_START
31:0
0x0
Format is [39:8]
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10. Shader Interpolator Registers
SPI:SPI_BARYC_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286e0
DESCRIPTION: Determines set of BARYC values computed by the SPI.
Field Name
Bits
Default
Description
PERSP_CENTER_ENA
1:0
0x0
Perspective gradients @ pixel center, only processed
when persp gradients are on
POSSIBLE VALUES:
00 - Off
01 - On at center
02 - On at centroid
PERSP_CENTROID_ENA
5:4
0x0
Perspective gradients @ pixel centroid, only processed
when persp gradients are on
POSSIBLE VALUES:
00 - Off
01 - On at centroid
02 - On at center
PERSP_SAMPLE_ENA
9:8
0x0
Perspective gradients @ sample, only processed when
persp gradients are on
POSSIBLE VALUES:
00 - Off
01 - On
PERSP_PULL_MODEL_ENA
13:12
0x0
Provide I,J,1/W to GPR for pull model interpolation,
only processed when persp gradients are on
POSSIBLE VALUES:
00 - Off
01 - On
LINEAR_CENTER_ENA
17:16
0x0
Linear gradients @ pixel center, only processed when
linear gradients are on
POSSIBLE VALUES:
00 - Off
01 - On at center
02 - On at centroid
LINEAR_CENTROID_ENA
21:20
0x0
Linear gradients @ pixel centroid, only processed when
linear gradients are on
POSSIBLE VALUES:
00 - Off
01 - On at centroid
02 - On at center
LINEAR_SAMPLE_ENA
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25:24
0x0
Linear gradients @ sample, only processed when linear
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gradients are on
POSSIBLE VALUES:
00 - Off
01 - On
SPI:SPI_CONFIG_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9100
Field Name
Bits
Default
Description
GPR_WRITE_PRIORITY
17:0
0x2C688
3 bits for each type to set relative priority. PS=[2:0],
VS=[5:3], GS=[8:6], ES=[11:9], HS=[14:12], LS=[17:15]
SPI:SPI_CONFIG_CNTL_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x913c
Field Name
Bits
Default
Description
VTX_DONE_DELAY
3:0
0x0
POSSIBLE VALUES:
00 - delay 14 clks (defalut, min value needed for pele
config)
01 - delay 16 clks
02 - delay 18 clks
03 - delay 20 clks
04 - delay 22 clks
05 - delay 24 clks
06 - delay 26 clks
07 - delay 28 clks
08 - delay 30 clks
09 - delay 32 clks
10 - delay 34 clks
11 - delay 4 clks
12 - delay 6 clks
13 - delay 8 clks
14 - delay 10 clks
15 - delay 12 clks
INTERP_ONE_PRIM_PER_ROW 4
0x0
POSSIBLE VALUES:
00 - Interpolate two prims per clock, assuming no
conflicts (default)
01 - Only interpolate one prim per clock
BC_OPTIMIZE_DISABLE
5
0x0
POSSIBLE VALUES:
00 - Write center/centroid IJ in one clk when
possible (default)
01 - Always write 1 IJ per clock
PC_LIMIT_ENABLE
6
0x0
Enable artificial param cache limit based on
PC_LIMIT_SIZE. Performance debug feature.
PC_LIMIT_STRICT
7
0x0
If clear, pc alloc fails if head > limit, guaranteeing at
least one wave will fit. If set, pc alloc fails if head +
space > limit, guaranteeing head never passes limit.
PC_LIMIT_SIZE
31:16
0x100
Artificial limit for SPI param cache allocation, should be
set to at least (vs_output_count * num_good_pipes * 2)
for all active VS or could cause a deadlock when using
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LIMIT_STRICT.
SPI:SPI_FOG_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286dc
DESCRIPTION: Fog interpolation control
Field Name
Bits
Default
Description
PASS_FOG_THROUGH_PS
0
0x0
Enables the passing of VS fog from param cache location
VS_OUT_FOG_VEC_ADDR.X to the LDS at
FOG_ADDR.X
SPI:SPI_GPR_MGMT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286f8
DESCRIPTION: Per-context GPR limit for each shader type. This is a soft-limit, meaning allocation only fails
once currently allocated space > limit.
Field Name
Bits
Default
Description
NUM_PS_GPRS
4:0
0x0
PS GPR limit, format is [7:3]. A setting of 1 means 8
GPR, 31 means 248, and a setting of 0 disables the limit.
NUM_VS_GPRS
9:5
0x0
Same desc as PS
NUM_GS_GPRS
14:10
0x0
Same desc as PS
NUM_ES_GPRS
19:15
0x0
Same desc as PS
NUM_HS_GPRS
24:20
0x0
Same desc as PS
NUM_LS_GPRS
29:25
0x0
Same desc as PS, limit applies to LS and CS.
SPI:SPI_INPUT_Z · [R/W] · 8 bits · Access: 8 · GpuF0MMReg:0x286d8
Field Name
Bits
Default
PROVIDE_Z_TO_SPI
0
0x0
Description
SPI:SPI_INTERP_CONTROL_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286d4
DESCRIPTION: Interpolator control settings
Field Name
Bits
Default
Description
FLAT_SHADE_ENA
0
0x0
Global flat shade enable used in conjunction with perparameter flat shade control
PNT_SPRITE_ENA
1
0x0
Enable PT_SPRITE_TEX override for point primitives
PNT_SPRITE_OVRD_X
4:2
0x0
POSSIBLE VALUES:
00 - SPI_PNT_SPRITE_SEL_0: Override
component with 0.0f
01 - SPI_PNT_SPRITE_SEL_1: Override
component with 1.0f
02 - SPI_PNT_SPRITE_SEL_S: Override
component with S value
03 - SPI_PNT_SPRITE_SEL_T: Override
component with T value
04 - SPI_PNT_SPRITE_SEL_NONE: Keep
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interpolated result
PNT_SPRITE_OVRD_Y
7:5
0x0
POSSIBLE VALUES:
00 - SPI_PNT_SPRITE_SEL_0: Override
component with 0.0f
01 - SPI_PNT_SPRITE_SEL_1: Override
component with 1.0f
02 - SPI_PNT_SPRITE_SEL_S: Override
component with S value
03 - SPI_PNT_SPRITE_SEL_T: Override
component with T value
04 - SPI_PNT_SPRITE_SEL_NONE: Keep
interpolated result
PNT_SPRITE_OVRD_Z
10:8
0x0
POSSIBLE VALUES:
00 - SPI_PNT_SPRITE_SEL_0: Override
component with 0.0f
01 - SPI_PNT_SPRITE_SEL_1: Override
component with 1.0f
02 - SPI_PNT_SPRITE_SEL_S: Override
component with S value
03 - SPI_PNT_SPRITE_SEL_T: Override
component with T value
04 - SPI_PNT_SPRITE_SEL_NONE: Keep
interpolated result
PNT_SPRITE_OVRD_W
13:11
0x0
POSSIBLE VALUES:
00 - SPI_PNT_SPRITE_SEL_0: Override
component with 0.0f
01 - SPI_PNT_SPRITE_SEL_1: Override
component with 1.0f
02 - SPI_PNT_SPRITE_SEL_S: Override
component with S value
03 - SPI_PNT_SPRITE_SEL_T: Override
component with T value
04 - SPI_PNT_SPRITE_SEL_NONE: Keep
interpolated result
PNT_SPRITE_TOP_1
14
0x0
POSSIBLE VALUES:
00 - T is 1.0 at bottom of primitive
01 - T is 1.0 at top of primitive
SPI:SPI_PS_INPUT_CNTL_[0-31] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28644-0x286c0
DESCRIPTION: PS interpolator settings for parameter 0
Field Name
Bits
Default
Description
SEMANTIC
7:0
0x0
PS input semantic mapping
DEFAULT_VAL
9:8
0x0
Selects value to force into GPR if no semantic match
found
POSSIBLE VALUES:
00 - 0.0f, 0.0f, 0.0f, 0.0f
01 - 0.0f, 0.0f, 0.0f, 1.0f
02 - 1.0f, 1.0f, 1.0f, 0.0f
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03 - 1,0f, 1.0f, 1.0f, 1.0f
FLAT_SHADE
10
0x0
Flat shade select
CYL_WRAP
16:13
0x0
4-bit cylindrical wrap control (1 bit per component)
PT_SPRITE_TEX
17
0x0
Override this parameter with texture coordinates if global
enable set and prim is a point
SPI:SPI_PS_IN_CONTROL_0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286cc
DESCRIPTION: Interpolator control settings
Field Name
Bits
Default
Description
NUM_INTERP
5:0
0x0
Number of parameters to interp (not minus 1). Should
include VS Fog term, if enabled.
POSITION_ENA
8
0x0
Load per-pixel floating point position into the PS
POSITION_CENTROID
9
0x0
Calculate per-pixel position at pixel centroid
POSITION_ADDR
14:10
0x0
Relative GPR address where flt position is loaded (0->31)
PARAM_GEN
18:15
0x0
Generate gradients for ST coordinates, written into LDS at
location (NUM_INTERP). Only bit 0 is used, bits 1-3
should be set to 0.
PERSP_GRADIENT_ENA
28
0x0
Enable perspective gradients (if linear is set to 0, persp is
always enabled)
LINEAR_GRADIENT_ENA
29
0x0
Enable linear gradients
POSITION_SAMPLE
30
0x0
Calculate per-pixel position at iterated sample num
SPI:SPI_PS_IN_CONTROL_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286d0
DESCRIPTION: Interpolator control settings
Field Name
Bits
Default
Description
FRONT_FACE_ENA
8
0x0
Enable GPR load with x=face, y=prim_type,
z=pixel_coverage, w=ps_gen_index. Term written at
FRONT_FACE_ADDR
FRONT_FACE_ALL_BITS
11
0x0
POSSIBLE VALUES:
00 - Sign bit represents isFF (dx9, -1.0f == backFace,
+1.0f == frontFace)
01 - Replace whole 32b val with isFF (WGF, 1 ==
frontFace, 0 == backFace)
FRONT_FACE_ADDR
16:12
0x0
Relative GPR address to load (0->31)
FOG_ADDR
23:17
0x0
Relative LDS address to load (0->NUM_INTERP-1)
FIXED_PT_POSITION_ENA
24
0x0
Load per-pixel fixed point position into the PS
FIXED_PT_POSITION_ADDR 29:25
0x0
Relative GPR address where fxd position is loaded (0->31)
POSITION_ULC
0x0
Force floating point position to upper left corner of pixel
(X.0, Y.0)
30
SPI:SPI_PS_IN_CONTROL_2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286e4
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DESCRIPTION: Interpolator control settings
Field Name
Bits
Default
Description
LINE_STIPPLE_TEX_ADDR
7:0
0x0
GPR address for per pixel line stipple texture coord. (0 > 126)
LINE_STIPPLE_TEX_ENA
8
0x0
Enable line stipple texture generation in the PA, per pixel
calc and GPR load in the SPI.
SPI:SPI_LDS_MGMT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286fc
DESCRIPTION: Per-context LDS limit for each shader type. This is a soft-limit, meaning allocation only fails
once currently allocated space > limit.
Field Name
Bits
Default
Description
NUM_PS_LDS
7:0
0x0
PS LDS limit, format is [12:5]. A setting of 1 means 32
dwords, 255 means 8160 dwords, 0 disables the limit.
NUM_LS_LDS
15:8
0x0
Same desc as PS, applies to LS for draws and CS for
dispatch.
SPI:SPI_STACK_MGMT · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28700
DESCRIPTION: Per-context Stack limit for each shader type. This is a soft-limit, meaning allocation only fails
once currently allocated space > limit.
Field Name
Bits
Default
Description
NUM_PS_STACK
4:0
0x0
PS Stack limit, format is [8:4]. A setting of 1 means 16
entries, 31 means 496 entries, and 0 disables the limit.
Max stack entries is 512.
NUM_VS_STACK
9:5
0x0
Same desc as PS
NUM_GS_STACK
14:10
0x0
Same desc as PS
NUM_ES_STACK
19:15
0x0
Same desc as PS
NUM_HS_STACK
24:20
0x0
Same desc as PS
NUM_LS_STACK
29:25
0x0
Same desc as PS, limit applies to LS and CS.
SPI:SPI_VS_OUT_CONFIG · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x286c4
DESCRIPTION: VS output configuration
Field Name
Bits
Default
Description
VS_PER_COMPONENT
0
0x0
When set, each entry in SPI_VS_OUT_ID_0-9
represents one component of a vector (not valid for
DX10). Otherwise each entry represents an entire vector
VS_EXPORT_COUNT
5:1
0x0
Number of vectors exported by the VS (value is minus 1)
VS_HALF_PACK
6
0x0
Setting this bit causes the VGT to only load VS
wavefronts half full of verts and the SPI to alloc/dealloc
half the param cache space for each wave. Required for
configs with > 1 quad pipe when
(((VS_EXPORT_COUNT + 1) *
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GPU__GC__QP_PER_SIMD * 2 ) >
GPU__SX__PARAMETER_CACHE_DEPTH)
VS_EXPORTS_FOG
8
0x0
Set when VS exports fog
VS_OUT_FOG_VEC_ADDR
13:9
0x0
Vector address where VS exported fog. Fog factor will
always be in the X channel
SPI:SPI_VS_OUT_ID_[0-9] · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2861c-0x28640
DESCRIPTION: VS output semantic mapping for 4 components/vectors
Field Name
Bits
Default
SEMANTIC_0
7:0
0x0
SEMANTIC_1
15:8
0x0
SEMANTIC_2
23:16
0x0
SEMANTIC_3
31:24
0x0
Description
SPI:SPI_WAVE_MGMT_1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28704
DESCRIPTION: Per-context wave_buffer limit for each shader type. This is a soft-limit, meaning allocation only
fails once currently allocated space > limit.
Field Name
Bits
Default
Description
NUM_PS_WAVES
4:0
0x0
PS wave limit, format is [7:3]. A setting of 1 means 8
waves, 31 means 248, and 0 disables the limit (256).
NUM_VS_WAVES
9:5
0x0
Same desc as PS
NUM_GS_WAVES
14:10
0x0
Same desc as PS
NUM_ES_WAVES
19:15
0x0
Same desc as PS
NUM_HS_WAVES
24:20
0x0
Same desc as PS
NUM_LS_WAVES
29:25
0x0
Same desc as PS, limit applies to LS only and not CS in
this case.
SPI:SPI_WAVE_MGMT_2 · [R/W] · 16 bits · Access: 16 · GpuF0MMReg:0x28708
DESCRIPTION: Per-context wave_buffer limit for each shader type. This is a soft-limit, meaning allocation only
fails once currently allocated space > limit.
Field Name
Bits
Default
Description
NUM_CS_WAVES_ONE_RING
4:0
0x0
CS wave limit, format is [7:3]. A setting of 1 means 8
waves, 31 means 248, and 0 disables the limit (256).
This field is used when a given CS ring is the only ring
active in the SPI.
NUM_CS_WAVES_MULTI_RING 9:5
0x0
This field is used for a given CS ring when there are
multiple rings active.
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11. Shader Export Registers
SX:SX_ALPHA_REF · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28438
Field Name
Bits
Default
Description
ALPHA_REF
31:0
none
Reference value for alpha test, which is specified in IEEE
floating point.
SX:SX_ALPHA_TEST_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28410
Field Name
Bits
Default
Description
ALPHA_FUNC
2:0
none
Specifies the function used to compare the fragment alpha
value (produced by the shader pipe) to ALPHA_REF, the
reference alpha value. The alpha test passes (keeping the
pixel) if frag_alpha OP alpha_ref is true.
POSSIBLE VALUES:
00 - REF_NEVER: never pass
01 - REF_LESS: pass if left < right
02 - REF_EQUAL: pass if left = right
03 - REF_LEQUAL: pass if left <= right
04 - REF_GREATER: pass if left > right
05 - REF_NOTEQUAL: pass if left != right
06 - REF_GEQUAL: pass if left >= right
07 - REF_ALWAYS: always pass
ALPHA_TEST_ENABLE
3
none
If alpha test is enabled, then a failed ALPHA_FUNC
comparison causes the pixel to be killed.
POSSIBLE VALUES:
00 - DISABLE: force ALPHA_FUNC to ALWAYS
01 - ENABLE: discard pixels that do not pass the
alpha test.
ALPHA_TEST_BYPASS
8
none
Driver can st this bit to bypass the alpha test for surface
types that don`t support alpha testing.
POSSIBLE VALUES:
00 - DISABLE: discard pixels that do not pass the
alpha test.
01 - ENABLE: force ALPHA_FUNC to ALWAYS.
SX:SX_EXPORT_BUFFER_SIZES · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x900c
DESCRIPTION: Register that defines export buffer ring sizes.
Field Name
Bits
Default
Description
COLOR_BUFFER_SIZE
7:0
0x3F
Number of 4 line buffers -1 in color buffer. Each memory
buffer corresponds to 4 lines of 16*128 bits elements.
Minimum acceptable value of register field is 0x8 (8
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MRT+Z).
POSITION_BUFFER_SIZE
15:8
0xF
Number of 4 line buffers -1 in position buffer. Each
memory buffer corresponds to 4 lines of 16*128 bits
elements. Minimum acceptable value of register field is
0x3. Not programable for Wekiva, for derivatives, max
value is 0xF.
SMX_BUFFER_SIZE
23:16
0x2F
Number of 4 line buffers -1 in smx buffer. Each memory
buffer corresponds to 4 lines of 16*128 bits elements
SX:SX_MEMORY_EXPORT_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9010
DESCRIPTION: Defines the base address of the memory export. Only available if chip supports
GPU__GC__MEM_EXPORT_PRESENT.
Field Name
Bits
Default
Description
ADDRESS
31:0
0x0
Format is [39:8]
SX:SX_MEMORY_EXPORT_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9014
DESCRIPTION: Defines the aperture of the memory export. Only available if chip supports
GPU__GC__MEM_EXPORT_PRESENT.
Field Name
Bits
Default
Description
SIZE
31:0
0x0
Format is [39:8] so SIZE is in increments of 256 bytes
(64 DW), if index > size, SX will clamp to Size - 1
dword and disable the write.
SX:SX_MISC · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28350
Field Name
Bits
Default Description
MULTIPASS
0
none
POSSIBLE VALUES:
00 - Do not kill all primitives
01 - Kill all primitives
SX:SX_SCATTER_EXPORT_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28358
DESCRIPTION: Defines the base address of the scatter or LDS export. Read performed by SXM block using
GRBM instancing.
Field Name
Bits
Default
Description
ADDRESS
31:0
0x0
Format is [39:8]
SX:SX_SCATTER_EXPORT_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2835c
DESCRIPTION: Defines the aperture of the scatter or LDS export. Read performed by SXM block using GRBM
instancing.
Field Name
Bits
Default
Description
SIZE
31:0
0x0
Format is [39:8] so SIZE is in increments of 256 bytes
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(64 DW), if index > size, SX will clamp to Size - 1
dword and disable the write.
SX:SX_SURFACE_SYNC · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28354
DESCRIPTION: This register is used for CP surface sync purposes, controls SX related surfaces.
Field Name
Bits
Default
Description
SURFACE_SYNC_MASK
9:0
none
Used to tell which SX surface type to flush on a sync
request from the CP. Mapping is as follows: 0:0 Stream
out 0 1:1 Stream out 1 2:2 Stream out 2 3:3 Stream out 3
4:4 Scratch 5:5 Reduction Buffer 6:6 Ring Buffer 7:7 FBuffer 8:8 Memory export 9:9 Cacheless RAT surfaces
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12. Cache Control Registers
SMX:SMX_DC_CTL0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa020
DESCRIPTION: Write combining Cache control register. Read performed by SXS block using GRBM instancing.
Field Name
Bits
Default
Description
USE_HASH_FUNCTION
0
0x1
Use hash function to select set
NUMBER_OF_SETS
9:1
0x8
Cache depth in number of sets, 1,2, or 4
FLUSH_ALL_ON_EVENT
10
0x0
Flush whole cache everytime an event is seen
STALL_ON_EVENT
11
0x0
Stall all data while event is processed
DISABLE_WRITE_EVICT
12
0x0
Disable simultaneous writes and evicts in the write
combiners.
FORCE_FULL_STRICT_RR
13
0x0
Force full line machine in a strict round-robin arbitration
between sets
STALL_FLFLUSH
14
0x0
Stall update probes while flflush machine evicts.
ALLOW_DUPLICATES
15
0x1
Allow duplicate cachelines on memory exports (and
RAT_CACHELESS), when this is set order of export
operations in the thread is not guaranteed if
ALLOW_MULTI_EVICT is set but performance of the
cache will improve
ALLOW_RAT_DUPLICATES
16
0x1
Allow duplicate cachelines on RAT exports, when this is
set order of export operations in the thread is not
guaranteed if ALLOW_MULTI_EVICT is set but
performance of the cache will improve
ENABLE_FLFLUSH_MACHINE 17
0x1
Allows the cache to oportunisticaly write full lines to
memory ahead of time
CACHE_EVENT_OPTIMIZE
18
0x1
Allows writes to occur while events are being processed.
EVENT_LONG_LATENCY
19
0x0
Forces events to wait for update traffic, resulting in
longer waits before events get sent.
NO_RAT_NON_RAT_MIX
20
0x0
RAT transactions use 1/2 the sets, non-RAT use the other
half, no mixing allowed
SMX:SMX_EVENT_CTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa02c
DESCRIPTION: Controls the affects of events on data present in cache. Read performed by SXS block using
GRBM instancing.
Field Name
Bits
Default
Description
ES_FLUSH_CTL
2:0
0x3
Controls ES related events
POSSIBLE VALUES:
00 - Flush only generic ES traffic
01 - Flush generic and scratch ES traffic
02 - Flush generic and sync ES traffic
03 - Flush all ES traffic
04 - Flush whole cache
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GS_FLUSH_CTL
5:3
0x3
April 26, 2011
Controls GS related events
POSSIBLE VALUES:
00 - Flush only generic GS traffic
01 - Flush generic and scratch GS traffic
02 - Flush generic and sync GS traffic
03 - Flush all GS traffic
04 - Flush whole cache
ACK_FLUSH_CTL
7:6
0x0
Controls Ack events
POSSIBLE VALUES:
00 - Flush ack traffic of same type
01 - Flush all ack traffic
02 - Flush all traffic of same type
03 - Flush whole cache
SYNC_FLUSH_CTL
8
0x0
Controls surface sync events
POSSIBLE VALUES:
00 - Flush only sync marked traffic
01 - Flush whole cache
WAIT_FOR_IDLE_ON_EVENT 9
0x0
Controls how the events are allowed in the SXS tile
POSSIBLE VALUES:
00 - Submit event while SXS is flushing the previous
one
01 - Wait for full idle on the SXS event machine
before next event is allowed
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13. Texture Pipe Registers
TP:TD_CNTL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9494
DESCRIPTION: Texture Data Common Control
Field Name
Bits
Default
Description
SYNC_PHASE_SH
1:0
0x0
Programmable Sync Phase Offset to be used for sending
data back to SH.
PAD_STALL_EN
8
0x0
When set (=1), the Texture Data pipeline will internally
enforce all stall periods to be multiples of 4 clock cycles.
EXTEND_LDS_STALL
10:9
0x0
Extend LDS stall from SX by 1 to 3 cycles more than the
default. The default is 4 cycles.
POSSIBLE VALUES:
00 - 0: leave default extendion - total of 4 cycles
01 - 1: Extend LDS stall by 1 more cycle - total of 5
cycles
02 - 2: Extend LDS stall by 2 more cycle - total of 6
cycles
03 - 3: Extend LDS stall by 3 more cycle - total of 7
cycles
GATHER4_FLOAT_MODE
16
0x0
32-bit float handling for Gather4 opcodes
POSSIBLE VALUES:
00 - 0: Pass denorm/NaN untouched like mov
operation
01 - 1: Override denorm/NaN as in SAMPLE
LD_FLOAT_MODE
18
0x0
Not supported
POSSIBLE VALUES:
00 - Not supported
GATHER4_DX9_MODE
19
0x0
Return data in DX9 order: W, Z, Y, X = TL, BR, BL, TR
POSSIBLE VALUES:
00 - 0: Return data in DX10 order: W, Z, Y, X = TL,
TR, BR, BL
01 - 1: Return data in DX9 order: W, Z, Y, X = TL,
BR, BL, TR
TP:TD_CS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa474
Field Name
Bits
Default
ALPHA
31:0
none
Description
TP:TD_CS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa470
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Field Name
Bits
Default
BLUE
31:0
none
April 26, 2011
Description
TP:TD_CS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa46c
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_CS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa464
Field Name
Bits
Default
INDEX
4:0
none
Description
TP:TD_CS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa468
Field Name
Bits
Default
RED
31:0
none
Description
TP:TD_GS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa438
Field Name
Bits
Default
ALPHA
31:0
none
Description
TP:TD_GS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa434
Field Name
Bits
Default
BLUE
31:0
none
Description
TP:TD_GS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa430
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_GS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa428
Field Name
Bits
Default
INDEX
4:0
none
Description
TP:TD_GS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa42c
Field Name
Bits
Default
RED
31:0
none
© 2011 Advanced Micro Devices, Inc.
Proprietary
Description
166
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TP:TD_HS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa44c
Field Name
Bits
Default
ALPHA
31:0
none
Description
TP:TD_HS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa448
Field Name
Bits
Default
BLUE
31:0
none
Description
TP:TD_HS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa444
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_HS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa43c
Field Name
Bits
Default
INDEX
4:0
none
Description
TP:TD_HS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa440
Field Name
Bits
Default
RED
31:0
none
Description
TP:TD_LS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa460
Field Name
Bits
Default
ALPHA
31:0
none
Description
TP:TD_LS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa45c
Field Name
Bits
Default
BLUE
31:0
none
Description
TP:TD_LS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa458
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_LS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa450
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Field Name
Bits
Default
INDEX
4:0
none
April 26, 2011
Description
TP:TD_LS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa454
Field Name
Bits
Default
RED
31:0
none
Description
TP:TD_PS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa410
Field Name
Bits
Default
ALPHA
31:0
none
Description
TP:TD_PS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa40c
Field Name
Bits
Default
BLUE
31:0
none
Description
TP:TD_PS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa408
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_PS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa400
Field Name
Bits
Default
INDEX
4:0
none
Description
TP:TD_PS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa404
Field Name
Bits
Default
RED
31:0
none
Description
TP:TD_STATUS · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9498
DESCRIPTION: Texture Data Status
Field Name
Bits
Default
BUSY
(Access: R)
31
none
Description
TP:TD_VS_BORDER_COLOR_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa424
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Field Name
Bits
Default
ALPHA
31:0
none
April 26, 2011
Description
TP:TD_VS_BORDER_COLOR_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa420
Field Name
Bits
Default
BLUE
31:0
none
Description
TP:TD_VS_BORDER_COLOR_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa41c
Field Name
Bits
Default
GREEN
31:0
none
Description
TP:TD_VS_BORDER_COLOR_INDEX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa414
Field Name
Bits
Default
INDEX
4:0
none
Description
TP:TD_VS_BORDER_COLOR_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0xa418
Field Name
Bits
Default
RED
31:0
none
Description
TP:TA_CNTL_AUX · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9508
DESCRIPTION: Texture Addresser Common Control
Field Name
Bits
Default
Description
DISABLE_CUBE_WRAP
0
0x0
CubeMap Clamp Policy Override
POSSIBLE VALUES:
00 - Force Clamp X,Y policy to wrap for CubeMaps
01 - Allow other clamp modest
Reserved
1
0x0
GETLOD_SELECT
3:2
0x0
GetLOD Data Return control
POSSIBLE VALUES:
00 - Sampler and Resource clamped LOD in
Resource View space, Zero fraction for MipPoint
01 - Sampler and Resource clamped LOD in
Resource View space, Fraction kept always
02 - Sampler clamped LOD in Resource View space,
Fraction kept always
03 - Sampler and Resource clamped LOD in
Resource space, Zero fraction for MipPoint
DISABLE_IDLE_STALL
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4
0x0
Idles in stalls override
169
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POSSIBLE VALUES:
00 - Idles included in stalls for power
01 - Idles excluded from stalls
VERTEX_FETCH_64_MODE
8
0x0
Control granularity of multicycle condition for 64-bit
formats
POSSIBLE VALUES:
00 - 16K DWORD Multicycling
01 - 32-bit Multicycling
VERTEX_FETCH_96_MODE
9
0x0
Control granularity of multicycle condition for 96-bit
formats
POSSIBLE VALUES:
00 - 16K DWORD Multicycling
01 - Always 3-cycle
VERTEX_FETCH_128_MODE
10
0x0
Control granularity of multicycle condition for 128-bit
formats
POSSIBLE VALUES:
00 - 16K DWORD Multicycling
01 - 64-/32-bit Multicycling
SYNC_GRADIENT
24
0x1
This has been deprecated for 7xx and beyond. Treat as
RESERVED. Gradient synchronization mode
POSSIBLE VALUES:
00 - Gradient Sync on Instruction
01 - Gradient Sync on Phase
SYNC_WALKER
25
0x1
This has been deprecated for 7xx and beyond. Treat as
RESERVED. Walker synchronization mode
POSSIBLE VALUES:
00 - Walker Sync on Instruction
01 - Walker Sync on Phase
SYNC_ALIGNER
26
0x1
This has been deprecated for 7xx and beyond. Treat as
RESERVED. Aligner synchronization mode
POSSIBLE VALUES:
00 - Aligner Sync on Instruction
01 - Aligner Sync on Phase
TEX_COORD_PRECISION
28
0x0
Texture cooordinate precision setting
POSSIBLE VALUES:
00 - 8-bit weight precision
01 - 6-bit weight precision
LOD_LOG2_TRUNC
29
0x0
LOD log2 truncate or round setting
POSSIBLE VALUES:
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00 - Round log2 approximation
01 - Truncate log2 approximation
MIPFILTER_POINT_PRECLAMP 30
0x0
Controls the location of the 0.5 addition to LOD for
mipfilter_point to before or after the Sampler and
Resource clamps
POSSIBLE VALUES:
00 - Addition of 0.5 after Sampler and Resource
Clamp
01 - Addition of 0.5 before the Sampler and
Resource Clamp
LOD_SF_SCALING
31
0x0
Apply the scaling method for sf_int_gt_0 or revert back
to the hard clamp
POSSIBLE VALUES:
00 - Apply scaling for sf_int_gt_0 in the LOD
algorithm
01 - Do not apply scaling
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14. Depth Buffer Registers
DB:DB_ALPHA_TO_MASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b70
Field Name
Bits
Default
Description
ALPHA_TO_MASK_ENABLE 0
none
If enabled, the sample mask is ANDed with a mask produced
from the alpha value. This field can be overriden by setting
DB_SHADER_CONTROL.ALPHA_TO_MASK_DISABLE.
ALPHA_TO_MASK_OFFSET0 9:8
none
Dither threshold for pixel (0,0) in each quad if alpha to mask
is enabled. Set to 2 for non-dithered, or a unique 0-3 value for
dithered.
ALPHA_TO_MASK_OFFSET1 11:10
none
Dither threshold for pixel (0,1) in each quad if alpha to mask
is enabled. Set to 2 for non-dithered, or a unique 0-3 value for
dithered.
ALPHA_TO_MASK_OFFSET2 13:12
none
Dither threshold for pixel (1,0) in each quad if alpha to mask
is enabled. Set to 2 for non-dithered, or a unique 0-3 value for
dithered.
ALPHA_TO_MASK_OFFSET3 15:14
none
Dither threshold for pixel (1,1) in each quad if alpha to mask
is enabled. Set to 2 for non-dithered, or a unique 0-3 value for
dithered.
OFFSET_ROUND
none
Round dither threshold. Set to 0 for a non-dithered look, or 1
for a dithered look.
16
DB:DB_COUNT_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28004
Field Name
Bits
Default
Description
ZPASS_INCREMENT_DISABLE 0
none
Disable incrementing the ZPass count for this context.
PERFECT_ZPASS_COUNTS
1
none
Forces zpass counts to be accurate by turning off no-op
culling optimizations where skipping rasterization may
lead to incorrect zpass counts (partially covered tiles).
SAMPLE_RATE
6:4
0x0
Sets how many samples per pixel are counted. Area is
accurate no matter how many samples per pixel there
really are.
DB:DB_DEPTH_CLEAR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2802c
Field Name
Bits
Default
Description
DEPTH_CLEAR
31:0
none
Depth value when ZMASK==0, which indicates that the
tile has been cleared to the background depth. This
register holds a 32bit float value. This value must be in
the range of 0.0 to 1.0
DB:DB_DEPTH_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28800
DESCRIPTION: This register controls depth and stencil tests.
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Field Name
Bits
Default
Description
STENCIL_ENABLE
0
none
Enables stencil testing. If disabled, all pixels pass the
stencil test. If there is no stencil buffer this is treated as
disabled.
Z_ENABLE
1
none
Enables depth testing. If disabled, all pixels pass the
depth test. If there is no depth buffer this is treated as
disabled.
Z_WRITE_ENABLE
2
none
Enables writing to the depth buffer if the depth test
passes.
ZFUNC
6:4
none
Specifies the function that compares the depth at each
sample in the fragment to the destination depth at the
corresponding sample point.
POSSIBLE VALUES:
00 - FRAG_NEVER: never pass
01 - FRAG_LESS: pass if fragment < dest
02 - FRAG_EQUAL: pass if fragment = dest
03 - FRAG_LEQUAL: pass if fragment <= dest
04 - FRAG_GREATER: pass if fragment > dest
05 - FRAG_NOTEQUAL: pass if fragment != dest
06 - FRAG_GEQUAL: pass if fragment >= dest
07 - FRAG_ALWAYS: always pass
BACKFACE_ENABLE
7
none
If false, forces all quads to be stencil tested as frontface
quads.
STENCILFUNC
10:8
none
Specifies the function that compares STENCILREF to
the destination stencil value for frontface quads. The
stencil test passes if ref OP dest is true.
POSSIBLE VALUES:
00 - REF_NEVER: never pass
01 - REF_LESS: pass if left < right
02 - REF_EQUAL: pass if left = right
03 - REF_LEQUAL: pass if left <= right
04 - REF_GREATER: pass if left > right
05 - REF_NOTEQUAL: pass if left != right
06 - REF_GEQUAL: pass if left >= right
07 - REF_ALWAYS: always pass
STENCILFAIL
13:11
none
Specifies the stencil operation for frontface quads if the
stencil function fails.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
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06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
STENCILZPASS
16:14
none
Specifies the stencil operation for frontface quads if the
stencil and depth functions both pass.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
STENCILZFAIL
19:17
none
Specifies the stencil operation for frontface quads if the
stencil function passes and the depth function fails.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
STENCILFUNC_BF
22:20
none
Specifies the function that compares STENCILREF_BF
to the destination stencil for backface quads. The stencil
test passes if ref OP dest is true.
POSSIBLE VALUES:
00 - REF_NEVER: never pass
01 - REF_LESS: pass if left < right
02 - REF_EQUAL: pass if left = right
03 - REF_LEQUAL: pass if left <= right
04 - REF_GREATER: pass if left > right
05 - REF_NOTEQUAL: pass if left != right
06 - REF_GEQUAL: pass if left >= right
07 - REF_ALWAYS: always pass
STENCILFAIL_BF
25:23
none
Specifies the stencil operation for backface quads if the
stencil function fails.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
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02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
STENCILZPASS_BF
28:26
none
Specifies the stencil operation for backface quads if the
stencil and depth functions both pass.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
STENCILZFAIL_BF
31:29
none
Specifies the stencil operation for backface quads if the
stencil function passes and the depth function fails.
POSSIBLE VALUES:
00 - STENCIL_KEEP: New value = Old Value
01 - STENCIL_ZERO: New value = 0
02 - STENCIL_REPLACE: New value =
STENCILREF
03 - STENCIL_INCR_CLAMP: New value++
(clamp)
04 - STENCIL_DECR_CLAMP: New value-(clamp)
05 - STENCIL_INVERT: New value=~Old value
06 - STENCIL_INCR_WRAP: New value++ (wrap)
07 - STENCIL_DECR_WRAP: New value-- (wrap)
DB:DB_DEPTH_INFO · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2803c
Field Name
Bits
Default
Description
ADDR5_SWIZZLE_MASK
3:0
none
For 32B tiles, indicates whether the data should be stored
in the upper or lower half of a 64B word. if the XOR
reduce of ADDR5_SWIZZLE_MASK & {TILE_Y[1:0],
TILE_X[1:0]} is set, use the upper half, otherwise, use
the lower half.
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DB:DB_DEPTH_SIZE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28058
Field Name
Bits
Default
Description
PITCH_TILE_MAX
10:0
none
Width in 8x8 pixel tiles. (Pitch/8 - 1)
HEIGHT_TILE_MAX
21:11
none
Height of the depth buffer in 8x8 pixels (height/8 - 1)
DB:DB_DEPTH_SLICE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2805c
Field Name
Bits
Default
Description
SLICE_TILE_MAX
21:0
none
Number of 8x8 pixel tiles until the next slice plus some
small number to be able to rotate the tile pattern.
(pitch*height/64 - 1)
DB:DB_DEPTH_VIEW · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28008
DESCRIPTION: Selects slice index range for render target 0.
Field Name
Bits
Default
Description
SLICE_START
10:0
none
Specifies the starting slice number for this view. This
field is added to the RenderTargetArrayIndex to compute
the slice to render. SLICE_START must less than or
equal to SLICE_MAX
SLICE_MAX
23:13
none
Specifies the maximum allowed Z slice index for this
resource, which is one less than the total number of
slices.
Z_READ_ONLY
24
none
read only Z buffer. i.e. Force off writes to Z buffer
STENCIL_READ_ONLY
25
none
read only Stencil buffer.i.e. Force off writes to Stencil
buffer
DB:DB_EQAA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28804
DESCRIPTION: This register controls EQAA in the DB.
Field Name
Bits
Default Description
MAX_ANCHOR_SAMPLES
2:0
none
Sets the most number of anchor samples that the CB is
allowe to use. Set this to the mininum allocated sample
amount of the DB surfaces to limit the potential of
needing the CB to toss non-anchored fragments after
they are created.
PS_ITER_SAMPLES
6:4
none
Specifies how many samples to iterate across when
PS_ITER_SAMPLE is set thus setting the amount of
super-sampling.
Typically this is the number of app exposed samples.
Values greater than the depth surface samples is not
supported.
MASK_EXPORT_NUM_SAMPLES
10:8
none
Specifies how many samples to use for shader mask
exports.
none
How many samples of quality are generated for A2M.
ALPHA_TO_MASK_NUM_SAMPLES 14:12
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Set this in between the number of app exposed
samples and higher EQAA samples for speed/quality
tradeoff. If
ALPHA_TO_MASK_EQAA_DISABLE=1, it must be
set to the number of app exposed samples.
HIGH_QUALITY_INTERSECTIONS
16
none
If not set, all fully covered tiles run through the detail
walker at tile rate, only later slowing down to the DB`s
surface rate if it exists and the depth test results are not
known or down to pixel rate if the shader executes.
If set, will only speed up fully covered tiles that have
known Z test results, but still allows tiles that have
potential Z intersections to run at the detail rate and
therefore get AAed intersections. Should be used with
INTERPOLATE_COMP_Z for best quality.
INCOHERENT_EQAA_READS
17
none
Disables the coherency check for abutting triangles
that share anchor samples, but not detail samples
Important for performance on abutting strips if data
forwarding doesn`t exist
Introduces latency dependant results, so force to 0 for
all testing except perhaps for unit tests.
INTERPOLATE_COMP_Z
18
none
Allows unanchored samples to interpolate a unique Z
from compressed Z Planes. Creates nice AAed
intersections on first intersection per pixel
Introduces latency dependant results
Therefore force this to 0 for all testing except perhaps
unit directed tests that are visually checked
INTERPOLATE_SRC_Z
19
none
Forces unanchored samples to interpolate a unique
source Z even when destination Z is not compressed
for a smoother intersection even with uncompressed Z.
May cause blending with ZFUNC==EQUALS on
uncompressed Z to fail due to comparing against noninterpolated dest Z.
Likely will never be set except for experimentation.
STATIC_ANCHOR_ASSOCIATIONS
20
none
Forces replicated destination data to always come from
the statically associated anchor sample as opposed to
trying to pull destination data from the nearest anchor
sample that is inside the primitive.
When set, may cause additional coherency stalls and a
degradation of quality for abutting triangles
ALPHA_TO_MASK_EQAA_DISABLE 21
none
Makes Alpha to Mask set samples exactly like the
previous GPUs. Should only be set if previous
generation behavior is desired, otherwise the new
behavior is optimized for EQAA which improves the
quality when mixing AA modes and even when not.
DB:DB_HTILE_DATA_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28014
Field Name
Bits
Default
Description
BASE_256B
31:0
none
Location of the first byte of the HTileData surface in
Device Address Space, which must be 256 byte aligned.
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High 32-bits of 40-bit address. This surface contains the
HiZ data.
DB:DB_HTILE_SURFACE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28abc
Field Name
Bits
Default
Description
HTILE_WIDTH
0
none
How many pixels wide each entry in the htile buffer
represents. Must be set to 1. 0 = 4 (deprecated), 1 = 8
HTILE_HEIGHT
1
none
How many pixels high each entry in the htile buffer
represents. Must be set to 1. 0 = 4 (deprecated), 1 = 8
LINEAR
2
none
Surface is stored linearly in swaths of 8 htiles high until
the surface is complete.
FULL_CACHE
3
none
This htile buffer uses the entire htile cache.
if set to 0 and the htile surface will not fit in half the
cache, then the SC`s partial vector deadlock timer must
also be enabled
HTILE_USES_PRELOAD_WIN 4
none
If set, the htile surface dimensions will be that of the
preload window; otherwise, it will be that of the depth
buffer
PRELOAD
5
none
Preload all data that fits as soon as room is available
once the VGT_DRAW_INITIATOR is seen on a
context.
PREFETCH_WIDTH
11:6
none
The Prefetch window width (in 64 pixel increments).
Prefetcher tries to keep this window around the last
rasterized htile in cache at all times.
PREFETCH_HEIGHT
17:12
none
The Prefetch window height (in 64 pixel increments).
Prefetcher tries to keep this window around the last
rasterized htile in cache at all times.
DB:DB_PRELOAD_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ac8
Field Name
Bits
Default
Description
START_X
7:0
none
Starting X position of the preload window, in 64 pixel
increments
START_Y
15:8
none
Starting Y position of the preload window, in 64 pixel
increments
MAX_X
23:16
none
Ending X position of the preload window, in 64 pixel
increments
MAX_Y
31:24
none
Ending Y position of the preload window, in 64 pixel
increments
DB:DB_RENDER_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28000
Field Name
Bits Default Description
DEPTH_CLEAR_ENABLE
0
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Proprietary
none
Clears Z to the Clear Value.
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STENCIL_CLEAR_ENABLE
1
none
Clears Stencil to the Clear Value
DEPTH_COPY
2
none
Enables Z expansion to color render target 0. CB must be
programmed to the desired destination format.
STENCIL_COPY
3
none
Enables Stencil expansion to color render target 0. CB must be
programmed to the desired destination format.
RESUMMARIZE_ENABLE
4
none
If set, all tiles touched will update the HTILE surface info.
STENCIL_COMPRESS_DISABLE 5
none
Forces stencil to decompress on any rendered tile not
hierarchically culled
DEPTH_COMPRESS_DISABLE
6
none
Forces z to decompress on any rendered tile not hierarchically
culled
COPY_CENTROID
7
none
If set, copy the 1st lit sample in the pixel starting at the
COPY_SAMPLE`th sample (wraps back to lower samples). If
COPY_CENTROID==0 and z or stencil writes are on (which
doesn`t happen in production drivers),
DB_RENDER_OVERRIDE.FORCE_QC_SMASK_CONFLICT
must be set. Also, COPY_CENTROID must be set to 1 when
doing z or stencil copies and ps_iter is on.
COPY_SAMPLE
11:8 none
If COPY_CENTROID, copy 1st lit starting at this sample
number. Else copy this sample whether lit or not.
DB:DB_RENDER_OVERRIDE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2800c
Field Name
Bits
Default
Description
FORCE_HIZ_ENABLE
1:0
none
Forces hierarchical depth culling to be enabled ignoring
what is in DB_SHADER_CONTROL and all other
render states.
POSSIBLE VALUES:
00 - FORCE_OFF
01 - FORCE_ENABLE
02 - FORCE_DISABLE
03 - FORCE_RESERVED
FORCE_HIS_ENABLE0
3:2
none
Forces hierarchical stencil culling to be enabled for
compare state 0, ignoring what is in
DB_SHADER_CONTROL and all other render states.
POSSIBLE VALUES:
00 - FORCE_OFF
01 - FORCE_ENABLE
02 - FORCE_DISABLE
03 - FORCE_RESERVED
FORCE_HIS_ENABLE1
5:4
none
Forces hierarchical stencil culling to be enabled for
compare state 1, ignoring what is in
DB_SHADER_CONTROL and all other render states.
POSSIBLE VALUES:
00 - FORCE_OFF
01 - FORCE_ENABLE
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02 - FORCE_DISABLE
03 - FORCE_RESERVED
FORCE_SHADER_Z_ORDER
6
none
Forces the setting specified in
DB_SHADER_CONTROL.Z_ORDER to be used for
early/late/re Z+S test. If not set the shader preference is
used unless precluded by other render states.
FAST_Z_DISABLE
7
none
Do not accelerate Z clears or write operations. Prevents
killing quads before detail rasterization if depth
operations are needed.
FAST_STENCIL_DISABLE
8
none
Do not accelerate stencil clears or write operations.
Prevents killing quads before detail rasterization if
stencil operations are needed.
NOOP_CULL_DISABLE
9
none
Prevents hierarchically killing quads that will pass Z and
Stencil, but do not write Z, Stencil or Color.
FORCE_COLOR_KILL
10
none
DB does any possible depth optimizations assuming the
shader results are not needed and kills all samples before
the color operation.
FORCE_Z_READ
11
none
Read all Z data for a tile even if it is not needed. Used
for resummarization blts.
FORCE_STENCIL_READ
12
none
Read all stencil data for a tile even if it is not needed.
Used for resummarization blts.
FORCE_FULL_Z_RANGE
14:13
none
Forces hierarchical depth to treat each primitive as if its
range is 0.0 -> 1.0f or not. If disabled, it is implicitly
derived from
DB_SHADER_CONTROL.Z_EXPORT_ENABLE and
other enabling registers. Can be used to reset the Z range
to 0-1 as well.
May be set to FORCE_DISABLE only if
DB_SHADER_CONTROL.Z_EXPORT_ENABLE is
set to 0. Production drivers are expected to set this field
to FORCE_OFF
POSSIBLE VALUES:
00 - FORCE_OFF
01 - FORCE_ENABLE
02 - FORCE_DISABLE
03 - FORCE_RESERVED
FORCE_QC_SMASK_CONFLICT 15
none
Forces Quad Coherency to mark a squad with a
matching dtileid, x, and y as a conflict and stall it even if
the sample mask doesn`t overrlap.
DISABLE_VIEWPORT_CLAMP
16
none
Disables the viewport clamp, which allows Z data to go
through untouched.
IGNORE_SC_ZRANGE
17
none
Ignore the SC`s vertex bounds on the minZ/maxZ for a
tile during HiZ.
DISABLE_FULLY_COVERED
18
none
Disable the fully covered tile bit coming into the DB,
which turns off all fully covered optimizations.
FORCE_Z_LIMIT_SUMM
20:19
none
Forces summarization of minz or maxz or both.
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POSSIBLE VALUES:
00 - FORCE_SUMM_OFF
01 - FORCE_SUMM_MINZ
02 - FORCE_SUMM_MAXZ
03 - FORCE_SUMM_BOTH
MAX_TILES_IN_DTT
25:21
0x0
Maximum number of tiles allowed in dtt block before
causing a stall. If
DB_DEBUG.NEVER_FREE_Z_ONLY is set, the
MAX_TILES_IN_DTT must be less than or equal to the
following, depending on the number of samples in the z
buffer:
1xaa: 21
2xaa: 11
4xaa: 5
8xaa: 2
Note: Production drivers are expected to leave this
register to the default of 0, which will satisfy the
constraint
DISABLE_TILE_RATE_TILES
26
0x0
Disable the optimization which allows some fully
covered 8x8s to run at tile rate.
FORCE_Z_DIRTY
27
none
Forces Z data to be written even if it has not changed.
Can be used to copy Z data to an alternate surface.
FORCE_STENCIL_DIRTY
28
none
Forces Stencil data to be written even if it has not
changed. Can be used to copy Stencil data to an alternate
surface.
FORCE_Z_VALID
29
none
Forces the Z data to be read unless it is being
overwritten. Can be used to copy Z data to an alternate
surface.
FORCE_STENCIL_VALID
30
none
Forces the Stencil data to be read unless it is being
overwritten. Can be used to copy Stencil data to an
alternate surface.
PRESERVE_COMPRESSION
31
none
Can be used when decompressing to an alternate surface
so that the htile`s compression state is not inadvertently
marked as expanded. Stops all writes to the zmask and
smem fields of the htile buffer.
DB:DB_RENDER_OVERRIDE2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28010
Field Name
Bit Defaul
Description
s
t
PARTIAL_SQUAD_LAUNCH_CONTROL
1:0 none
Sets how partial squads are launched.
POSSIBLE VALUES:
00 - PSLC_AUTO: Let DB automatically
control partial squad launches.
01 - PSLC_ON_HANG_ONLY: Partial
squad only launched on hang detect.
02 - PSLC_ASAP: Enable countdown to
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partial launch.
PARTIAL_SQUAD_LAUNCH_COUNTDOW
N value of 7 means launch immedicately.
03 - PSLC_COUNTDOWN: Enable
countdown to partial launch.
PARTIAL_SQUAD_LAUNCH_COUNTDOW
N value of 7 indicates to never launch partials.
PARTIAL_SQUAD_LAUNCH_COUNTDOWN
4:2 none
Sets countdown after which partial squads are
launched as (1 << N). 7 Means disable
countdown.
DISABLE_ZMASK_EXPCLEAR_OPTIMIZATIO 5
N
none
Only matters with
DB_Z_INFO.ALLOW_EXPCLEAR=1. To be
used on first clear on uninitialized surfaces when
the zmask can not be trusted.
DISABLE_SMEM_EXPCLEAR_OPTIMIZATION 6
none
Only matters with
DB_STENCIL_INFO.ALLOW_EXPCLEAR=1.
To be used on first clear on uninitialized
surfaces when the stencil memory format can not
be trusted.
DISABLE_COLOR_ON_VALIDATION
7
none
Disables DB from looking at
CB_COLOR_INFO, CB_SHADER_MASK,
and CB_TARGET_MASK to determine if the
color is on.
DECOMPRESS_Z_ON_FLUSH
8
none
0: Z Decompresses are performed within the
pipeline by allocating cache space and
decompressing in the pipe. Has cache pressure in
higher AA modes.
1: Z Decmpresses are performed while flushing
out to memory without allocating cache space
but incurs a startup latency per tile`s flush.
Should be set to 0 for 1xAA and 2xAA and 1 for
4xAA and 8xAA.
DB:DB_SHADER_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2880c
Field Name
Bits
Default Description
Z_EXPORT_ENABLE
0
none
Use DB Shader Export`s Red channel as Z instead of the
intepolated Z value. DB_SOURCE_FORMAT must be
FULL or TWO.
STENCIL_REF_EXPORT_ENABLE 1
none
Use DB Shader Export`s Green[7:0] as the Stencil
Reference Value. No restriction on
DB_SOURCE_FORMAT.
Z_ORDER
none
Indicates Shader`s preference for which type of Z testing.
The _THEN_ for early Z allows the shader to indicate a
preference when EARLY_Z can`t be used. If RE_Z can`t
be used then LATE_Z is.
5:4
POSSIBLE VALUES:
00 - LATE_Z
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01 - EARLY_Z_THEN_LATE_Z
02 - RE_Z
03 - EARLY_Z_THEN_RE_Z
KILL_ENABLE
6
none
Shader can kill pixels through texkill.
COVERAGE_TO_MASK_ENABLE 7
none
Use DB Shader Export`s Alpha Channel as an independent
Alpha to Mask operation. DB_SOURCE_FORMAT must
be FULL or FOUR16, where if FOUR16 the shader
converts oDB.alpha to a Float16.
MASK_EXPORT_ENABLE
8
none
Use DB Shader Export`s Blue Channel as sample mask for
pixel. The lowest NUM_SAMPLES bits are used.
DB_SOURCE_FORMAT must be FULL or FOUR16.
DUAL_EXPORT_ENABLE
9
none
Allows the shader export block to pack two quads into
each export to the backend.
EXEC_ON_HIER_FAIL
10
none
Will execute the shader even if Hierarchical Z or Stencil
would kill the quad. Enable if the pixel shader has a
desired side effect not covered by the above flags for any
failing or passing samples (when
DEPTH_BEFORE_SHADER=0). Note that EarlyZ and
ReZ kills will still stop the shader from running.
EXEC_ON_NOOP
11
none
Will execute the shader even if nothing uses the shader`s
color or depth exports. Enable if the pixel shader has a
desired side effect not caused by the above flags only for
passing pixels.
ALPHA_TO_MASK_DISABLE
12
none
If set, disables alpha to mask, overriding
DB_ALPHA_TO_MASK.ALPHA_TO_MASK_ENABLE
DB_SOURCE_FORMAT
14:13
none
This field indicates the format for the DB export from the
pixel shader. Red = oDepth, Green = oStencilRef, Blue =
oMask, Alpha = oCoverageToMask. See above for the
per-channel enables. oDepth can`t use FOUR16 since it is
a Float32. oMask and oCoverageToMask can`t use TWO
since it doesn`t contain blue or alpha. Therefore if oDepth
and oMask and/or oCoverageToMask are on, this must be
FULL. If SQ_PGM_EXPORTS_PS.EXPORT_MODE[0]
is not 1, this field and the above per-channel enables are
ignored and considered disabled.
POSSIBLE VALUES:
00 - EXPORT_DB_FULL: Four 32 bit exports over
two cycles.
01 - EXPORT_DB_FOUR16: Four 16 bit exports over
one cycle extracted from the bottom 16 bits of each
channel.
02 - EXPORT_DB_TWO: Two 32 bit exports over
one cycle using only Red and Green dropping Blue and
Alpha.
DEPTH_BEFORE_SHADER
© 2011 Advanced Micro Devices, Inc.
Proprietary
15
none
The shader is declared to run AFTER depth by definition,
which will prevent shader killing of samples and/or pixels
(alpha test, alpha to coverage, coverage to mask, mask
export, z/stencil exports) from affecting the depth
operation and therefore does not allow these to disallow
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EarlyZ. Also ZPass counts are defined to be counted after
the Z test, so this mode makes shader and alpha based
culling no longer reduce the ZPass counts.
CONSERVATIVE_Z_EXPORT
17:16
none
Forces z exports to be either less than or greater than the
source z value.
POSSIBLE VALUES:
00 - EXPORT_ANY_Z: Exported Z can be any value
01 - EXPORT_LESS_THAN_Z: Exported Z will be
assumed to be less than the source z value
02 - EXPORT_GREATER_THAN_Z: Exported Z will
be assumed to be greater than the source z value
03 - EXPORT_RESERVED: Reserved
DB:DB_SRESULTS_COMPARE_STATE0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ac0
Field Name
Bits
Default
Description
COMPAREFUNC0
2:0
none
Used to determine the meaning of the MayPass and
MayFail smask bits during hierarchical stencil testing.
NEVER or ALWAYS invalidates the SResults in the
HTile Buffer
POSSIBLE VALUES:
00 - REF_NEVER: never pass
01 - REF_LESS: pass if left < right
02 - REF_EQUAL: pass if left = right
03 - REF_LEQUAL: pass if left <= right
04 - REF_GREATER: pass if left > right
05 - REF_NOTEQUAL: pass if left != right
06 - REF_GEQUAL: pass if left >= right
07 - REF_ALWAYS: always pass
COMPAREVALUE0
11:4
none
Stencil value compared against the stencil reference
value during hierarchical stencil testing.
COMPAREMASK0
19:12
none
This value is ANDed with the SResults compare value.
A mask of 0 invalidates the SResults in the HTile Buffer
ENABLE0
24
none
If set, use SResults in HiS test. Set when compare state is
known and clear when doing a resummarize.
DB:DB_SRESULTS_COMPARE_STATE1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28ac4
Field Name
Bits
Default
Description
COMPAREFUNC1
2:0
none
Used to determine the meaning of the MayPass and
MayFail smask bits during hierarchical stencil testing.
NEVER or ALWAYS invalidates the SResults in the
HTile Buffer
POSSIBLE VALUES:
00 - REF_NEVER: never pass
01 - REF_LESS: pass if left < right
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02 - REF_EQUAL: pass if left = right
03 - REF_LEQUAL: pass if left <= right
04 - REF_GREATER: pass if left > right
05 - REF_NOTEQUAL: pass if left != right
06 - REF_GEQUAL: pass if left >= right
07 - REF_ALWAYS: always pass
COMPAREVALUE1
11:4
none
Stencil value compared against the stencil reference
value during hierarchical stencil testing.
COMPAREMASK1
19:12
none
This value is ANDed with the SResults compare value.
A mask of 0 invalidates the SResults in the HTile Buffer
ENABLE1
24
none
If set, use SResults in HiS test. Set when compare state is
known and clear when doing a resummarize.
DB:DB_STENCILREFMASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28430
Field Name
Bits
Default
Description
STENCILREF
7:0
none
Specifies the reference stencil value for front facing
primitives.
STENCILMASK
15:8
none
This value is ANDed with both the reference and the
current stencil value prior to the stencil test for front
facing primitives.
STENCILWRITEMASK
23:16
none
Specifies the write mask for the stencil planes for front
facing primitives.
DB:DB_STENCILREFMASK_BF · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28434
Field Name
Bits
Default
Description
STENCILREF_BF
7:0
none
Specifies the reference stencil value for back facing
primitives.
STENCILMASK_BF
15:8
none
This value is ANDed with both the reference and the
current stencil value prior to the stencil test for back
facing primitives.
STENCILWRITEMASK_BF
23:16
none
Specifies the write mask for the stencil planes for back
facing primitives.
DB:DB_STENCIL_CLEAR · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28028
Field Name
Bits
Default
Description
CLEAR
7:0
none
Stencil value when SMEM==0, which specifies that the
tile is cleared to background stencil values. Cannot be
changed without clearing or previously expanding the
stencil buffer.
DB:DB_STENCIL_INFO · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28044
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Field Name
Bits
Default
Description
FORMAT
0
none
Specifies the size of the Stencil component.
POSSIBLE VALUES:
00 - STENCIL_INVALID: Invalid stencil surface.
01 - STENCIL_8: 8-bit INT stencil surface.
TILE_SPLIT
10:8
none
Specifies the number of bytes that will be stored
contiguously for each tile. If the tile data requires more
storage than this amount, it is split into multiple slices.
This field must not be larger than
GB_ADDR_CONFIG.DRAM_ROW_SIZE. Only
applies to 2D tiling modes
POSSIBLE VALUES:
00 - ADDR_SURF_TILE_SPLIT_64B:
01 - ADDR_SURF_TILE_SPLIT_128B:
02 - ADDR_SURF_TILE_SPLIT_256B:
03 - ADDR_SURF_TILE_SPLIT_512B:
04 - ADDR_SURF_TILE_SPLIT_1KB:
05 - ADDR_SURF_TILE_SPLIT_2KB:
06 - ADDR_SURF_TILE_SPLIT_4KB:
ALLOW_EXPCLEAR
27
none
Allow Stencil Memory Format to keep track of expanded
and clear.
TILE_STENCIL_DISABLE
29
none
Indicates that htile buffer has no stencil metadata. This
improves hiz precision at the cost of having no stencil
compression or HiStencil optimizations.
DB:DB_STENCIL_READ_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2804c
Field Name
Bits
Default
Description
BASE_256B
31:0
none
Location of the first byte of the Stencil surface for READ
in Device Address Space, which must be 256 byte
aligned. High 32-bits of 40-bit address.
DB:DB_STENCIL_WRITE_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28054
Field Name
Bits
Default
Description
BASE_256B
31:0
none
Location of the first byte of the Stencil surface for
WRITE in Device Address Space, which must be 256
byte aligned. High 32-bits of 40-bit address.
DB:DB_SUBTILE_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9858
DESCRIPTION: Controls subtile X and Y size for each MSAA level, for a squad`s size to a full tile
Field Name
Bits
Default
Description
MSAA1_X
1:0
0x0
1xMSAA squad is 4x4 : auto, 4, 4, 8 (2 not allowed since
< a squad in X)
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MSAA1_Y
3:2
0x0
1xMSAA squad is 4x4 : auto, 4, 4, 8 (2 not allowed since
< a squad in Y)
MSAA2_X
5:4
0x0
2xMSAA squad is 4x2 : auto, 4, 4, 8 (2 not allowed since
< a squad in X)
MSAA2_Y
7:6
0x0
2xMSAA squad is 4x2 : auto, 2, 4, 8
MSAA4_X
9:8
0x0
4xMSAA squad is 2x2 : auto, 2, 4, 8
MSAA4_Y
11:10
0x0
4xMSAA squad is 2x2 : auto, 2, 4, 8
MSAA8_X
13:12
0x0
8xMSAA squad is 2x1 : auto, 2, 4, 8
MSAA8_Y
15:14
0x0
8xMSAA squad is 2x1 : auto, 2, 4, 8 (1 not allowed since
want a mininum of a full quad)
MSAA16_X
17:16
0x0
MSAA16_Y
19:18
0x0
DB:DB_ZPASS_COUNT_HI · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9874
Field Name
Bits
Default
Description
COUNT_HI
30:0
none
zpass counter [62:32]
DB:DB_ZPASS_COUNT_LOW · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x9870
Field Name
Bits
Default
Description
COUNT_LOW
31:0
none
zpass counter [31:0]
DB:DB_Z_INFO · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28040
Field Name
Bits
Default
Description
FORMAT
1:0
none
Specifies the size of the depth component and whether
depth is floating point.
POSSIBLE VALUES:
00 - Z_INVALID: Invalid depth surface.
01 - Z_16: 16-bit UNORM depth surface.
02 - Z_24: 24-bit UNORM depth surface.
03 - Z_32_FLOAT: 32-bit FLOAT depth surface.
NUM_SAMPLES
3:2
none
Specifies thye MSAA surface footprint of the Z surface.
ARRAY_MODE
7:4
none
Specifies the tiling format for this array.
POSSIBLE VALUES:
02 - ARRAY_1D_TILED_THIN1: Uses 1D 8x8x1
tiles. Not valid for AA modes.
04 - ARRAY_2D_TILED_THIN1: Uses 8x8x1
macro-tiles
TILE_SPLIT
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10:8
none
Specifies the number of bytes that will be stored
contiguously for each tile. If the tile data requires more
storage than this amount, it is split into multiple slices.
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This field must not be larger than
GB_ADDR_CONFIG.DRAM_ROW_SIZE. Only
applies to 2D tiling modes
POSSIBLE VALUES:
00 - ADDR_SURF_TILE_SPLIT_64B:
01 - ADDR_SURF_TILE_SPLIT_128B:
02 - ADDR_SURF_TILE_SPLIT_256B:
03 - ADDR_SURF_TILE_SPLIT_512B:
04 - ADDR_SURF_TILE_SPLIT_1KB:
05 - ADDR_SURF_TILE_SPLIT_2KB:
06 - ADDR_SURF_TILE_SPLIT_4KB:
NUM_BANKS
13:12
none
Specifies the number of memory banks for tiling
purposes
POSSIBLE VALUES:
00 - ADDR_SURF_2_BANK:
01 - ADDR_SURF_4_BANK:
02 - ADDR_SURF_8_BANK:
03 - ADDR_SURF_16_BANK:
BANK_WIDTH
17:16
none
Specifies the number of tiles in the x direction to be
incorporated into the same bank. Only applies to 2D
tiling modes
POSSIBLE VALUES:
00 - ADDR_SURF_BANK_WIDTH_1:
01 - ADDR_SURF_BANK_WIDTH_2:
02 - ADDR_SURF_BANK_WIDTH_4:
03 - ADDR_SURF_BANK_WIDTH_8:
BANK_HEIGHT
21:20
none
Specifies the number of tiles in the y direction to be
incorporated into the same bank. Only applies to 2D
tiling modes
POSSIBLE VALUES:
00 - ADDR_SURF_BANK_HEIGHT_1:
01 - ADDR_SURF_BANK_HEIGHT_2:
02 - ADDR_SURF_BANK_HEIGHT_4:
03 - ADDR_SURF_BANK_HEIGHT_8:
MACRO_TILE_ASPECT
25:24
none
Specifies the macro tile aspect ratio. Only applies to 2D
tiling modes
POSSIBLE VALUES:
00 - ADDR_SURF_MACRO_ASPECT_1:
01 - ADDR_SURF_MACRO_ASPECT_2:
02 - ADDR_SURF_MACRO_ASPECT_4:
03 - ADDR_SURF_MACRO_ASPECT_8:
ALLOW_EXPCLEAR
27
none
Allow ZMask to keep track of expanded and clear.
READ_SIZE
28
none
Sets the minimum size for reads to be 512 bits. Set if the
surface is in a memory pool that has granularity penalty
with < 512 bit accesses.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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POSSIBLE VALUES:
00 - READ_256_BITS
01 - READ_512_BITS
TILE_SURFACE_ENABLE
29
none
Enables reading and writing of the htile data. If off
HiZ+S is off.
ZRANGE_PRECISION
31
none
0 = ZMin is the base, generally set when doing a Z > test,
1 = ZMax is the base, set when generally using a Z <
test. The value used as base has full 14 bit precision. By
setting the base to Max culling has less error in a < test.
Can only be changed after a full surface clear. This field
is only meaningful if TILE_Z_ONLY == 0
DB:DB_Z_READ_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28048
Field Name
Bits
Default
Description
BASE_256B
31:0
none
Location of the first byte of the Z surface for READ in
Device Address Space, which must be 256 byte aligned.
High 32-bits of 40-bit address.
DB:DB_Z_WRITE_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28050
Field Name
Bits
Default
Description
BASE_256B
31:0
none
Location of the first byte of the Z surface for WRITE in
Device Address Space, which must be 256 byte aligned.
High 32-bits of 40-bit address.
© 2011 Advanced Micro Devices, Inc.
Proprietary
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15. Color Buffer Registers
CB:CB_BLEND[0-7]_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28780-0x2879c
DESCRIPTION: Per-MRT blend control for MRTs 0..7.
Field Name
Bits
Default
Description
COLOR_SRCBLEND
4:0
none
Source blend function for RGB components. BLEND_X
name corresponds to GL_X blend function.
POSSIBLE VALUES:
00 - BLEND_ZERO: (d3d_zero)
01 - BLEND_ONE: (d3d_one)
02 - BLEND_SRC_COLOR: (d3d_srccolor)
03 - BLEND_ONE_MINUS_SRC_COLOR:
(d3d_invsrccolor)
04 - BLEND_SRC_ALPHA: (d3d_srcalpha)
05 - BLEND_ONE_MINUS_SRC_ALPHA:
(d3d_invsrcalpha)
06 - BLEND_DST_ALPHA: (d3d_destalpha)
07 - BLEND_ONE_MINUS_DST_ALPHA:
(d3d_invdestalpha)
08 - BLEND_DST_COLOR: (d3d_destcolor)
09 - BLEND_ONE_MINUS_DST_COLOR:
(d3d_invdestcolor)
10 - BLEND_SRC_ALPHA_SATURATE:
(d3d_srcalphasat)
11 - BLEND_BOTH_SRC_ALPHA:
DEPRECATED. Do not use.
12 - BLEND_BOTH_INV_SRC_ALPHA:
DEPRECATED. Do not use.
13 - BLEND_CONSTANT_COLOR:
(d3d_blendfactor, uses corresponding RB_BLEND
component)
14 - BLEND_ONE_MINUS_CONSTANT_COLOR:
(d3d_invblendfactor)
15 - BLEND_SRC1_COLOR: DX10 dual-source
mode
16 - BLEND_INV_SRC1_COLOR: DX10 dualsource mode
17 - BLEND_SRC1_ALPHA: DX10 dual-source
mode
18 - BLEND_INV_SRC1_ALPHA: DX10 dualsource mode
19 - BLEND_CONSTANT_ALPHA: (uses
RB_BLEND_ALPHA)
20 - BLEND_ONE_MINUS_CONSTANT_ALPHA:
COLOR_COMB_FCN
7:5
none
Source/dest combination function for RGB components.
Result is clamped to the representable range.
POSSIBLE VALUES:
© 2011 Advanced Micro Devices, Inc.
Proprietary
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00 - COMB_DST_PLUS_SRC: (ADD):
Source*SRCBLEND + Dest*DSTBLEND
01 - COMB_SRC_MINUS_DST: (SUBTRACT):
Source*SRCBLEND - Dest*DSTBLEND
02 - COMB_MIN_DST_SRC: (MIN): min(Source,
Dest)
03 - COMB_MAX_DST_SRC: (MAX): max(Source,
Dest)
04 - COMB_DST_MINUS_SRC:
(REVSUBTRACT): Dest*DSTBLEND Source*SRCBLEND
COLOR_DESTBLEND
12:8
none
Destination blend function for RGB components.
BLEND_X name corresponds to GL_X blend function.
POSSIBLE VALUES:
00 - BLEND_ZERO: (d3d_zero)
01 - BLEND_ONE: (d3d_one)
02 - BLEND_SRC_COLOR: (d3d_srccolor)
03 - BLEND_ONE_MINUS_SRC_COLOR:
(d3d_invsrccolor)
04 - BLEND_SRC_ALPHA: (d3d_srcalpha)
05 - BLEND_ONE_MINUS_SRC_ALPHA:
(d3d_invsrcalpha)
06 - BLEND_DST_ALPHA: (d3d_destalpha)
07 - BLEND_ONE_MINUS_DST_ALPHA:
(d3d_invdestalpha)
08 - BLEND_DST_COLOR: (d3d_destcolor)
09 - BLEND_ONE_MINUS_DST_COLOR:
(d3d_invdestcolor)
10 - BLEND_SRC_ALPHA_SATURATE:
(d3d_srcalphasat)
11 - BLEND_BOTH_SRC_ALPHA:
DEPRECATED. Do not use.
12 - BLEND_BOTH_INV_SRC_ALPHA:
DEPRECATED. Do not use.
13 - BLEND_CONSTANT_COLOR:
(d3d_blendfactor, uses corresponding RB_BLEND
component)
14 - BLEND_ONE_MINUS_CONSTANT_COLOR:
(d3d_invblendfactor)
15 - BLEND_SRC1_COLOR: DX10 dual-source
mode
16 - BLEND_INV_SRC1_COLOR: DX10 dualsource mode
17 - BLEND_SRC1_ALPHA: DX10 dual-source
mode
18 - BLEND_INV_SRC1_ALPHA: DX10 dualsource mode
19 - BLEND_CONSTANT_ALPHA: (uses
RB_BLEND_ALPHA)
20 - BLEND_ONE_MINUS_CONSTANT_ALPHA:
ALPHA_SRCBLEND
© 2011 Advanced Micro Devices, Inc.
Proprietary
20:16
none
Source blend function for alpha component. BLEND_X
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name corresponds to GL_X blend function.
POSSIBLE VALUES:
00 - BLEND_ZERO: (d3d_zero)
01 - BLEND_ONE: (d3d_one)
02 - BLEND_SRC_COLOR: (d3d_srccolor)
03 - BLEND_ONE_MINUS_SRC_COLOR:
(d3d_invsrccolor)
04 - BLEND_SRC_ALPHA: (d3d_srcalpha)
05 - BLEND_ONE_MINUS_SRC_ALPHA:
(d3d_invsrcalpha)
06 - BLEND_DST_ALPHA: (d3d_destalpha)
07 - BLEND_ONE_MINUS_DST_ALPHA:
(d3d_invdestalpha)
08 - BLEND_DST_COLOR: (d3d_destcolor)
09 - BLEND_ONE_MINUS_DST_COLOR:
(d3d_invdestcolor)
10 - BLEND_SRC_ALPHA_SATURATE:
(d3d_srcalphasat)
11 - BLEND_BOTH_SRC_ALPHA:
DEPRECATED. Do not use.
12 - BLEND_BOTH_INV_SRC_ALPHA:
DEPRECATED. Do not use.
13 - BLEND_CONSTANT_COLOR:
(d3d_blendfactor, uses corresponding RB_BLEND
component)
14 - BLEND_ONE_MINUS_CONSTANT_COLOR:
(d3d_invblendfactor)
15 - BLEND_SRC1_COLOR: DX10 dual-source
mode
16 - BLEND_INV_SRC1_COLOR: DX10 dualsource mode
17 - BLEND_SRC1_ALPHA: DX10 dual-source
mode
18 - BLEND_INV_SRC1_ALPHA: DX10 dualsource mode
19 - BLEND_CONSTANT_ALPHA: (uses
RB_BLEND_ALPHA)
20 - BLEND_ONE_MINUS_CONSTANT_ALPHA:
ALPHA_COMB_FCN
23:21
none
Source/dest combination function for alpha component.
Result is clamped to the representable range. Note that
Min and Max do not force src and dst blend functions to
ONE.
POSSIBLE VALUES:
00 - COMB_DST_PLUS_SRC: (ADD):
Source*SRCBLEND + Dest*DSTBLEND
01 - COMB_SRC_MINUS_DST: (SUBTRACT):
Source*SRCBLEND - Dest*DSTBLEND
02 - COMB_MIN_DST_SRC: (MIN): min(Source,
Dest)
03 - COMB_MAX_DST_SRC: (MAX): max(Source,
© 2011 Advanced Micro Devices, Inc.
Proprietary
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Dest)
04 - COMB_DST_MINUS_SRC:
(REVSUBTRACT): Dest*DSTBLEND Source*SRCBLEND
ALPHA_DESTBLEND
28:24
none
Destination blend function for alpha component.
BLEND_X name corresponds to GL_X blend function.
POSSIBLE VALUES:
00 - BLEND_ZERO: (d3d_zero)
01 - BLEND_ONE: (d3d_one)
02 - BLEND_SRC_COLOR: (d3d_srccolor)
03 - BLEND_ONE_MINUS_SRC_COLOR:
(d3d_invsrccolor)
04 - BLEND_SRC_ALPHA: (d3d_srcalpha)
05 - BLEND_ONE_MINUS_SRC_ALPHA:
(d3d_invsrcalpha)
06 - BLEND_DST_ALPHA: (d3d_destalpha)
07 - BLEND_ONE_MINUS_DST_ALPHA:
(d3d_invdestalpha)
08 - BLEND_DST_COLOR: (d3d_destcolor)
09 - BLEND_ONE_MINUS_DST_COLOR:
(d3d_invdestcolor)
10 - BLEND_SRC_ALPHA_SATURATE:
(d3d_srcalphasat)
11 - BLEND_BOTH_SRC_ALPHA:
DEPRECATED. Do not use.
12 - BLEND_BOTH_INV_SRC_ALPHA:
DEPRECATED. Do not use.
13 - BLEND_CONSTANT_COLOR:
(d3d_blendfactor, uses corresponding RB_BLEND
component)
14 - BLEND_ONE_MINUS_CONSTANT_COLOR:
(d3d_invblendfactor)
15 - BLEND_SRC1_COLOR: DX10 dual-source
mode
16 - BLEND_INV_SRC1_COLOR: DX10 dualsource mode
17 - BLEND_SRC1_ALPHA: DX10 dual-source
mode
18 - BLEND_INV_SRC1_ALPHA: DX10 dualsource mode
19 - BLEND_CONSTANT_ALPHA: (uses
RB_BLEND_ALPHA)
20 - BLEND_ONE_MINUS_CONSTANT_ALPHA:
SEPARATE_ALPHA_BLEND
29
none
If false, use color blend modes for blending the alpha
channel. If true, use the ALPHA_ fields to control
blending to the alpha channel.
ENABLE
30
none
Enables blending for the corresponding MRT if it is 1,
else disables blending for that MRT if it is 0. Blending
and ROP3 cannot both be enabled.
© 2011 Advanced Micro Devices, Inc.
Proprietary
193
Revision 1.0
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CB:CB_BLEND_ALPHA · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28420
DESCRIPTION: Blend colour constant.
Field Name
Bits
Default
Description
BLEND_ALPHA
31:0
none
FP32 alpha component of constant blend color.
CB:CB_BLEND_BLUE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2841c
DESCRIPTION: Blend colour constant.
Field Name
Bits
Default
Description
BLEND_BLUE
31:0
none
FP32 blue component of constant blend color.
CB:CB_BLEND_GREEN · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28418
DESCRIPTION: Blend colour constant.
Field Name
Bits
Default
Description
BLEND_GREEN
31:0
none
FP32 green component of constant blend color.
CB:CB_BLEND_RED · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28414
DESCRIPTION: Blend colour constant.
Field Name
Bits
Default
Description
BLEND_RED
31:0
none
FP32 red component of constant blend color.
CB:CB_COLOR[0-11]_ATTRIB · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c74-0x28ea8
DESCRIPTION: Surface address information
Field Name
Bits
Default Description
IGNORE_SHADER_ENGINE_TILING 3
none
When asserted will force NUM_SHADER_ENGINES
to 0 into the addrlib.
NON_DISP_TILING_ORDER
none
Indicates the micro-tiling used. Depth, stencil, and
FMask surfaces implicitly utilize NON_DISPLAY.
ARRAY_MODE == ARRAY_LINEAR_* render
targets must use NON_DISPLAY. ARRAY_MODE
== ARRAY_LINEAR_* textures must use DISPLAY.
4
POSSIBLE VALUES:
00 - ADDR_SURF_MICRO_TILING_DISPLAY:
Not supported for 128bpp
01 ADDR_SURF_MICRO_TILING_NON_DISPLAY:
TC only supports 8, 16 , 32, 64, 128 and BC* textures.
CB supports for all render target formats.
TILE_SPLIT
© 2011 Advanced Micro Devices, Inc.
Proprietary
8:5
none
Specifies the number of bytes that will be stored
contiguously for each tile. If the tile data requires more
storage than this amount, it is split into multiple slices.
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This field must not be larger than
GB_ADDR_CONFIG.DRAM_ROW_SIZE. Only
applies to 2D tiling modes.
POSSIBLE VALUES:
00 - ADDR_SURF_TILE_SPLIT_64B:
01 - ADDR_SURF_TILE_SPLIT_128B:
02 - ADDR_SURF_TILE_SPLIT_256B:
03 - ADDR_SURF_TILE_SPLIT_512B:
04 - ADDR_SURF_TILE_SPLIT_1KB:
05 - ADDR_SURF_TILE_SPLIT_2KB:
06 - ADDR_SURF_TILE_SPLIT_4KB:
NUM_BANKS
11:10
none
Specifies the number of memory banks for tiling
purposes.
POSSIBLE VALUES:
00 - ADDR_SURF_2_BANK:
01 - ADDR_SURF_4_BANK:
02 - ADDR_SURF_8_BANK:
03 - ADDR_SURF_16_BANK:
BANK_WIDTH
14:13
none
Specifies the number of tiles in the x direction to be
incorporated into the same bank. Only applies to 2D
tiling modes.
POSSIBLE VALUES:
00 - ADDR_SURF_BANK_WIDTH_1:
01 - ADDR_SURF_BANK_WIDTH_2:
02 - ADDR_SURF_BANK_WIDTH_4:
03 - ADDR_SURF_BANK_WIDTH_8:
BANK_HEIGHT
17:16
none
Specifies the number of tiles in the y direction to be
incorporated into the same bank. Only applies to 2D
tiling modes. (Note: Fmask uses a different register
field for bank height.)
POSSIBLE VALUES:
00 - ADDR_SURF_BANK_HEIGHT_1:
01 - ADDR_SURF_BANK_HEIGHT_2:
02 - ADDR_SURF_BANK_HEIGHT_4:
03 - ADDR_SURF_BANK_HEIGHT_8:
MACRO_TILE_ASPECT
20:19
none
Specifies the macro tile aspect ratio. Only applies to
2D tiling modes.
POSSIBLE VALUES:
00 - ADDR_SURF_MACRO_ASPECT_1:
01 - ADDR_SURF_MACRO_ASPECT_2:
02 - ADDR_SURF_MACRO_ASPECT_4:
03 - ADDR_SURF_MACRO_ASPECT_8:
FMASK_BANK_HEIGHT
© 2011 Advanced Micro Devices, Inc.
Proprietary
23:22
none
POSSIBLE VALUES:
00 - ADDR_SURF_BANK_HEIGHT_1:
01 - ADDR_SURF_BANK_HEIGHT_2:
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02 - ADDR_SURF_BANK_HEIGHT_4:
03 - ADDR_SURF_BANK_HEIGHT_8:
NUM_SAMPLES
26:24
none
Specifies log2 of the number of samples. This may not
be greater than 4.
NUM_FRAGMENTS
28:27
none
Specifies log2 of the number of fragments. This may
not be greater than NUM_SAMPLES.
FORCE_DST_ALPHA_1
31
none
Forces the hw to use 1 for the dst alpha value. For use
with formats that do not have an alpha component.
Must be 0 if CB_COLORn_INFO.RAT=1.
CB:CB_COLOR[0-11]_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c60-0x28e94
DESCRIPTION: Base address for colour surface.
Field Name
Bits
Default
Description
BASE_256B
31:0
none
This specifies bits [39:8] of the byte address of the start
of the resource in device address space. For lineargeneral surfaces, bits [7:0] of the byte address are
specified in CB_COLOR*_VIEW.SLICE_START; for
all other surfaces, bits [7:0] of the byte address are
always zero. Pipe and bank swizzles can be specified
here. Bits [p-1:0] of this field, where p =
log2(numPipes), specifiy the pipe swizzle. Bits [p+b1:p], where b = log2(numBanks) specify the bank
swizzle. Since RV770 has a 36-bit address space, bits
[39:36] of any 40-bit address should be zero.
CB:CB_COLOR[0-7]_CLEAR_WORD0 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c8c-0x28e30
DESCRIPTION: Bits [31:0] of the per-MRT formatted fast clear color. Pixel size Clear color 8bpp WORD0[7:0]
16bpp WORD0[15:0] 32bpp WORD0[31:0] 64bpp {WORD1[31:0], WORD0[31:0]} 128bpp Unsupported
Field Name
Bits
Default
CLEAR_WORD0
31:0
none
Description
CB:CB_COLOR[0-7]_CLEAR_WORD1 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c900x28e34
DESCRIPTION: Bits [63:32] of the per-MRT formatted fast clear color. Pixel size Clear color 8bpp WORD0[7:0]
16bpp WORD0[15:0] 32bpp WORD0[31:0] 64bpp {WORD1[31:0], WORD0[31:0]} 128bpp Unsupported
Field Name
Bits
Default
CLEAR_WORD1
31:0
none
Description
CB:CB_COLOR[0-7]_CLEAR_WORD2 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c940x28e38
Field Name
Bits
Default
CLEAR_WORD2
31:0
none
© 2011 Advanced Micro Devices, Inc.
Proprietary
Description
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CB:CB_COLOR[0-7]_CLEAR_WORD3 · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c98-0x28e3c
Field Name
Bits
Default
CLEAR_WORD3
31:0
none
Description
CB:CB_COLOR[0-7]_CMASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c7c-0x28e20
DESCRIPTION: Base address for cmask surface.
Field Name
Bits
Default
Description
BASE_256B
31:0
none
This specifies bits [39:8] of the byte address of the start
of the CMASK per-tile data, if any, in device address
space. Since Wekiva has a 36-bit address space, bits
[39:36] of any 40-bit address should be zero.
CB:CB_COLOR[0-7]_CMASK_SLICE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c80-0x28e24
DESCRIPTION: Cmask slice settings for MRT 0...7
Field Name
Bits
Default
Description
TILE_MAX
13:0
none
This field equals one less than the number of 128x128
blocks (16x16 tiles) of CMASK data per slice.
CB:CB_COLOR[0-11]_DIM · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c78-0x28eac
DESCRIPTION: Sets the range of the render target resource.
Field Name
Bits
Default
Description
WIDTH_MAX
15:0
none
For BUFFER resource type this is
ELEMENTS_MAX[15:0]. For TEXTURE* resource
type it is Width-1 of the surface.
HEIGHT_MAX
31:16
none
For BUFFER resource type this is
ELEMENTS_MAX[31:16]. For TEXTURE* resource
type it is Height-1 of the surface.
CB:CB_COLOR[0-7]_FMASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c84-0x28e28
DESCRIPTION: Base address for fmask surface.
Field Name
Bits
Default
Description
BASE_256B
31:0
none
This specifies bits [39:8] of the byte address of the start
of the resource in device address space. Pipe and bank
swizzles can be specified here. Bits [p-1:0] of this field,
where p = log2(numPipes), specifiy the pipe swizzle.
Bits [p+b-1:p], where b = log2(numBanks) specify the
bank swizzle. Since Wekiva has a 36-bit address space,
bits [39:36] of any 40-bit address should be zero.
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CB:CB_COLOR[0-7]_FMASK_SLICE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c88-0x28e2c
DESCRIPTION: Mask settings for MRT 0..7.
Field Name
Bits
Default
Description
TILE_MAX
21:0
none
This field equals one less than the number of 8x8 tiles of
FMASK data per slice. See the Pele Memory Format
Specification for details on the FMASK memory layout.
CB:CB_COLOR[0-11]_INFO · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c70-0x28ea4
DESCRIPTION: Surface format information
Field Name
Bits
Default
Description
ENDIAN
1:0
none
Specifies what kind of byte swapping to perform, if any,
for different endian modes. The byte swap is equivalent
to computing dest[A] = src[A XOR N] for byte address
A and the XOR values listed below. See the
COMP_SWAP field for component swapping options.
POSSIBLE VALUES:
00 - ENDIAN_NONE: No endian swapping (XOR
by 0)
01 - ENDIAN_8IN16: 8 bit swap within 16 bit word
(XOR by 1): 0xAABBCCDD -> 0xBBAADDCC
02 - ENDIAN_8IN32: 8 bit swap within 32 bit word
(XOR by 3): 0xAABBCCDD -> 0xDDCCBBAA
03 - ENDIAN_8IN64: 8 bit swap in 64 bits (XOR by
7):
0xaabbccddeeffgghh -> 0xhhggffeeddccbbaa
FORMAT
7:2
none
Specifies the size of the color components and in some
cases the number format. See the COMP_SWAP field
below for mappings of RGBA (XYZW) shader pipe
results to color component positions in the pixel format.
When reading from the surface, missing components in
the format will be substituted with the default value: 0.0
for RGB or 1.0 for alpha.
POSSIBLE VALUES:
00 - COLOR_INVALID: this resource is disabled
01 - COLOR_8: norm, int
02 - RESERVED
03 - RESERVED
04 - RESERVED
05 - COLOR_16: norm, int, float
06 - COLOR_16_FLOAT: float only
07 - COLOR_8_8: norm, int
08 - COLOR_5_6_5: norm only
09 - RESERVED
10 - COLOR_1_5_5_5: norm only, 1-bit component
is always unorm
11 - COLOR_4_4_4_4: norm only
12 - COLOR_5_5_5_1: norm only, 1-bit component
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is always unorm
13 - COLOR_32: int, float
14 - COLOR_32_FLOAT: float only
15 - COLOR_16_16: norm, int, float
16 - COLOR_16_16_FLOAT: float only
17 - COLOR_8_24: unorm depth, uint stencil
18 - RESERVED
19 - COLOR_24_8: unorm depth, uint stencil
20 - RESERVED
21 - COLOR_10_11_11: float only
22 - COLOR_10_11_11_FLOAT: float only
23 - RESERVED
24 - RESERVED
25 - COLOR_2_10_10_10: norm, int
26 - COLOR_8_8_8_8: norm, int, srgb
27 - COLOR_10_10_10_2: norm, int
28 - COLOR_X24_8_32_FLOAT: float depth, uint
stencil
29 - COLOR_32_32: int, float
30 - COLOR_32_32_FLOAT: float only
31 - COLOR_16_16_16_16: norm, int, float
32 - COLOR_16_16_16_16_FLOAT: norm, int, float
33 - RESERVED
34 - COLOR_32_32_32_32: int, float
35 - COLOR_32_32_32_32_FLOAT: float only
ARRAY_MODE
11:8
none
Specifies the tiling format of this MRT. Each format can
be used for 1D, 2D, or 3D arrays. Formats 0 and 1 are
not displayable. THICK tiles use an 8x8x4 tile size
(volume textures). THIN1 tiles use an 8x8x1 tile size
(most other cases). THIN2 tiles double the height
alignment. THIN4 tiles quadruple the height alignment.
2D tilings rotate banks for successive render target slices.
3D tilings rotate pipes and banks for render target slices.
2B/3B tilings also rotate banks at row boundaries
POSSIBLE VALUES:
00 - ARRAY_LINEAR_GENERAL: Unaligned
linear array
01 - ARRAY_LINEAR_ALIGNED: Aligned linear
array
02 - ARRAY_1D_TILED_THIN1: Uses 1D 8x8x1
tiles. Not valid for AA modes.
04 - ARRAY_2D_TILED_THIN1: Uses 8x8x1
macro-tiles
NUMBER_TYPE
14:12
none
Specifies the numeric type of the color components.
POSSIBLE VALUES:
00 - NUMBER_UNORM: unsigned repeating
fraction (urf): range [0..1], scale factor (2^n)-1
01 - NUMBER_SNORM: Microsoft-style signed rf:
range [-1..1], scale factor (2^(n-1))-1
02 - RESERVED
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03 - RESERVED
04 - NUMBER_UINT: zero-extended bit field, int in
shader: not blendable or filterable
05 - NUMBER_SINT: sign-extended bit field, int in
shader: not blendable or filterable
06 - NUMBER_SRGB: gamma corrected, range
[0..1] (only supported for COLOR_8_8_8_8 format;
always rounds color channels)
07 - NUMBER_FLOAT: floating point: 32-bit: IEEE
float, SE8M23, bias 127, range (-2^129..2^129); 16-bit:
Short float SE5M10, bias 15, range (-2^17..2^17); 11-bit:
Packed float, E5M6 bias 15, range [0..2^17); 10-bit:
Packed float, E5M5 bias 15, range [0..2^17)
COMP_SWAP
16:15
none
Specifies how to map the red, green, blue, and alpha
components from the shader to the components in the
render target pixel format (components 0, 1, 2, 3 with 0
begin least significant, 3 begin most). With one
component, this selects which colour channel to map to
the single render target component (STD: R=>0; ALT:
G=>0; STD_REV: B=>0; ALT_REV: A=>0). With 2-4
components, SWAP_STD always maps shader
components starting with R=>0 up to the number of
components available (component R=>0, G=>1, B=>2,
A=>3). With 2-3 components, SWAP_ALT mimics
SWAP_STD except alpha from the shader is always sent
to the last render target component (2 components:
R=>0, A=>1; 3 components: R=>0, G=>1, A=>2). With
4 components, SWAP_ALT selects an alternate order
(B=>0, G=>1, R=>2, A=>3). With 2-4 components,
SWAP_STD_REV and SWAP_ALT_REV reverse the
component order.
POSSIBLE VALUES:
00 - SWAP_STD: standard little-endian comp order
01 - SWAP_ALT: alternate components or order
02 - SWAP_STD_REV: reverses SWAP_STD order
03 - SWAP_ALT_REV: reverses SWAP_ALT order
FAST_CLEAR
17
none
Enables fast clear.
COMPRESSION
18
none
Enables compression.
BLEND_CLAMP
19
none
Specifies whether to clamp source data to the format
range prior to blending, in addition to the post-blend
clamp. This bit must be cleared if BLEND_BYPASS is
set. Otherwise, it must be set iff any component is
SNORM, UNORM, SRGB.
BLEND_BYPASS
20
none
If false, the blender for this MRT is enabled/disabled as
specified in CB_BLENDn_CONTROL.ENABLE. If
true, blending is disabled. This bit should be set iff any
component is SINT/UINT (NUMBER_TYPE = SINT,
UINT, or FORMAT = COLOR_8_24, COLOR_24_8,
COLOR_X24_8_32_FLOAT).
SIMPLE_FLOAT
21
none
If false, floating point processing follows full IEEE rules
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for INF, NaN, and -0. If true, 0*dst produces 0. This
controls a hardware optimization for destination reads for
FP16/FP32 component formats. When this bit is set for
float surfaces, destination reads will be optimized out
when the source is zero. This bit is ignored for other
component formats.
ROUND_MODE
22
none
This field selects between truncating (standard for floats)
and rounding (standard for most other cases) to convert
blender results to frame buffer components. This should
be set to ROUND_BY_HALF iff any component is
UNORM, SNORM or SRGB (this field is ignored for
COLOR_8_24 and COLOR_24_8).
POSSIBLE VALUES:
00 - ROUND_BY_HALF: add 1/2 lsb and then
truncate
01 - ROUND_TRUNCATE: truncate toward zero for
float, else toward negative
TILE_COMPACT
23
none
Tile compact attempts to save memory footprint in a
multi-GPU system by collapsing the holes in the surface
that are stored on other GPUs. This feature may not be
implemented in the DX10 driver because the texture
cannot read the surface so we cannot do shader resolves.
This is potentially useful for DX9, but there are no plans
to implement it. Currently this bit is hooked up in the CB
but has not been thoroughly tested.
SOURCE_FORMAT
25:24
none
This field indicates the allowed format for color data
being exported from the pixel shader into the output
merge block. This field must be set to
EXPORT_4C_32BPC if any component is a
SNORM/UNORM greater than 11 bits, or FLOAT
greater than 16 bits, or any SINT/UINT number type.
Otherwise this field must be set to
EXPORT_4C_16BPC.
POSSIBLE VALUES:
00 - EXPORT_4C_32BPC: PS exports are 4 pixels
with 4 components with 32-bits-per-component. (two
clocks per export)
01 - EXPORT_4C_16BPC: PS exports are 4 pixels
with 4 components with 16-bits-per-component. (one
clock per export)
02 - EXPORT_2C_32BPC_GR: PS exports are 4
pixels with 2 components with Green and Red channels
only. (one clock per export)
03 - EXPORT_2C_32BPC_AR: PS exports are 4
pixels with 2 components with Alpha and Red channels
only. (one clock per export)
RAT
26
none
RESOURCE_TYPE
29:27
none
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POSSIBLE VALUES:
00 - BUFFER:
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01 - TEXTURE1D:
02 - TEXTURE1DARRAY:
03 - TEXTURE2D:
04 - TEXTURE2DARRAY:
05 - TEXTURE3D:
06 - STRUCTUREDBUFFER:
SOURCE_NUMBER_TYPE
31:30
none
POSSIBLE VALUES:
00 - EXPORT_FLOAT:
01 - EXPORT_INT: Look at the surface format to
distinguish between UINT and SINT
02 - EXPORT_UNORM:
03 - EXPORT_SNORM:
CB:CB_COLOR[0-11]_PITCH · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c64-0x28e98
DESCRIPTION: Pitch of color surface.
Field Name
Bits
Default
Description
TILE_MAX
10:0
none
Encodes the pitch of a scanline; if Pitch is the number of
data elements per scanline, this field is (Pitch / 8) - 1 and
is equal to the maximum 8x8 tile number allowed in the
X dimension.
CB:CB_COLOR[0-11]_SLICE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c68-0x28e9c
DESCRIPTION: Size of color surface.
Field Name
Bits
Default
Description
TILE_MAX
21:0
none
Encodes the size of a slice; if SliceTiles is the maximum
number of tiles in a slice (equal to Pitch * Height / 64),
this field is SliceTiles - 1 and is equal to the maximum
tile number tile number allowed in a slice.
CB:CB_COLOR[0-11]_VIEW · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28c6c-0x28ea0
DESCRIPTION: Selects slice index range for MRT 0..7.
Field Name
Bits
Default
Description
SLICE_START
10:0
none
For ARRAY_LINEAR_GENERAL, bits [7:0] of this
field specify bits [7:0] of the byte address of the
resource. This together with
CB_COLOR*_BASE.BASE_256B specify the 40-bit
start address. The address must be element-aligned. In
ARRAY_LINEAR_GENERAL, for clamping purposes,
this field is forced to zero. For all other surfaces, this
specifies the starting slice number for this view: this field
is added to rtindex to compute the slice to render.
SLICE_MAX
23:13
none
Specifies the maximum allowed render target slice index
(rtindex) for this resource, which is one less than the total
number of slices. rtindex is clamped to SLICE_START
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if this value is exceeded.
CB:CB_COLOR_CONTROL · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28808
DESCRIPTION: Controls general CB behaviour across all MRTs.
Field Name
Bits
Default
Description
DEGAMMA_ENABLE
3
none
If true, then each UNORM format COLOR_8_8_8_8
MRT is treated as an SRGB format instead. This affects
both normal draw and resolve. This bit exists for
compatibility with older architectures that did not have
an SRGB number type.
MODE
6:4
none
This field selects standard color processing or one of
several major operation modes.
POSSIBLE VALUES:
00 - CB_DISABLE: Disables drawing to color
buffer. Causes DB to not send tiles/quads to CB. CB
itself ignores this field.
01 - CB_NORMAL: Normal rendering mode. DB
should send tiles and quads for pixel exports or just
quads for compute exports.
02 - CB_ELIMINATE_FAST_CLEAR: Fill fast
cleared color surface locations with clear color. DB
should send only tiles.
03 - CB_RESOLVE: Read from MRT0, average all
samples, and write to MRT1, which is one-sample. DB
should send only tiles.
04 - CB_DECOMPRESS: Decompress MRT0 to a
uncompressed color format. This is required before a
multisampled surface is accessed by the CPU, or used as
a texture. This also decompresses the FMASK buffer. A
CB_ELIMINATE_FAST_CLEAR pass before this is
unnecessary. DB should send tiles and quads.
05 - CB_FMASK_DECOMPRESS: Decompress the
FMASK buffer into a texture readable format. A
CB_ELIMINATE_FAST_CLEAR pass before this is
unnecessary. DB should send only tiles.
ROP3
23:16
none
This field supports the 28 boolean ops that combine
either source and dest or brush and dest, with brush
provided by the shader in place of source. The code
0xCC (11001100) copies the source to the destination,
which disables the ROP function. ROP must be disabled
if any MRT enables blending.
POSSIBLE VALUES:
00 - 0x00: BLACKNESS
05 - 0x05
10 - 0x0A
15 - 0x0F
17 - 0x11: NOTSRCERASE
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34 - 0x22
51 - 0x33: NOTSRCCOPY
68 - 0x44: SRCERASE
80 - 0x50
85 - 0x55: DSTINVERT
90 - 0x5A: PATINVERT
95 - 0x5F
102 - 0x66: SRCINVERT
119 - 0x77
136 - 0x88: SRCAND
153 - 0x99
160 - 0xA0
165 - 0xA5
170 - 0xAA
175 - 0xAF
187 - 0xBB: MERGEPAINT
204 - 0xCC: SRCCOPY
221 - 0xDD
238 - 0xEE: SRCPAINT
240 - 0xF0: PATCOPY
245 - 0xF5
250 - 0xFA
255 - 0xFF: WHITENESS
CB:CB_IMMED[0-11]_BASE · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28b9c-0x28bc8
Field Name
Bits
Default
BASE_256B
31:0
none
Description
CB:CB_SHADER_MASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x2823c
DESCRIPTION: Contains color component mask fields for the colors output by the shader. The bits in
OUTPUT*_ENABLE are in the same order as for TARGET*_ENABLE. Outputs 1-7 are defined equivalently to
output 0.
Field Name
Bits
Default
Description
OUTPUT0_ENABLE
3:0
none
If zero, this field disables MRT 0, else it specifies which
components are enabled in the shader. The low order bit
corresponds to the red channel. A one bit passes the
shader output component value to the color block.
OUTPUT1_ENABLE
7:4
none
Enables output of color 1 components.
OUTPUT2_ENABLE
11:8
none
Enables output of color 2 components.
OUTPUT3_ENABLE
15:12
none
Enables output of color 3 components.
OUTPUT4_ENABLE
19:16
none
Enables output of color 4 components.
OUTPUT5_ENABLE
23:20
none
Enables output of color 5 components.
OUTPUT6_ENABLE
27:24
none
Enables output of color 6 components.
OUTPUT7_ENABLE
31:28
none
Enables output of color 7 components.
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CB:CB_TARGET_MASK · [R/W] · 32 bits · Access: 32 · GpuF0MMReg:0x28238
DESCRIPTION: Contains color component mask fields for writing the MRTs. Red, green, blue, and alpha are
components 0, 1, 2, and 3 in the pixel shader and are enabled by bits 0, 1, 2, and 3 in each field. Note that the
components may be in a different order in the frame buffer, depending on the COMP_SWAP field; the bits in
TARGET*_ENABLE correspond to the order of components after blending and before COMP_SWAP is applied.
MRTs 1-7 are defined equivalently to output 0.
Field Name
Bits
Default
Description
TARGET0_ENABLE
3:0
none
Enables writing to MRT 0 components. The low order
bit corresponds to the red channel. A zero bit disables
writing to that channel and a one bit enables writing to
that channel.
TARGET1_ENABLE
7:4
none
Enables write to MRT 1 components.
TARGET2_ENABLE
11:8
none
Enables write to MRT 2 components.
TARGET3_ENABLE
15:12
none
Enables write to MRT 3 components.
TARGET4_ENABLE
19:16
none
Enables write to MRT 4 components.
TARGET5_ENABLE
23:20
none
Enables write to MRT 5 components.
TARGET6_ENABLE
27:24
none
Enables write to MRT 6 components.
TARGET7_ENABLE
31:28
none
Enables write to MRT 7 components.
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