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Kirill Bazhenov edited this page Sep 10, 2026 · 3 revisions

RDNA 3 (RX 7900)

Pixel shaders

Name Permutation VGPR SGPR Occupancy
BilateralUpsample 12/256 34/104 95.31%
DebugDraw 13/256 22/104 94.92%
DebugDrawMesh 11/256 19/104 95.70%
DepthPyramidReduction 6/256 26/104 97.66%
Downsample 5/256 22/104 98.05%
EditorOutline_Composite 7/256 24/104 97.27%
EditorOutline_Initialize 8/256 32/104 96.88%
EditorOutline_JumpFlood 29/256 26/104 88.67%
ComplexSurfacePBR DEFAULT 67/256 86/104 73.83%
ComplexSurfacePBR ALPHA_TEST 67/256 86/104 73.83%
ComplexSurfacePBR DEFAULT ALPHA_TEST 67/256 86/104 73.83%
DefaultPBR DEFAULT 52/256 86/104 79.69%
DefaultPBR ALPHA_TEST 52/256 86/104 79.69%
DefaultPBR DEFAULT ALPHA_TEST 52/256 86/104 79.69%
Placeholder DEFAULT 51/256 82/104 80.08%
Placeholder ALPHA_TEST 51/256 82/104 80.08%
Placeholder DEFAULT ALPHA_TEST 51/256 82/104 80.08%
DefaultColorOnlyPBR DEFAULT 67/256 90/104 73.83%
DefaultColorOnlyPBR ALPHA_TEST 67/256 90/104 73.83%
DefaultColorOnlyPBR DEFAULT ALPHA_TEST 67/256 90/104 73.83%
OITResolve 4/256 16/104 98.44%
CubemapDownsample 7/256 22/104 97.27%
IrradianceFiltering 34/256 20/104 86.72%
PrecomputeDFG 13/256 8/104 94.92%
RadianceFiltering 24/256 22/104 90.62%
PostProcess 6/256 30/104 97.66%
Imgui 10/256 18/104 96.09%
SMAA_BlendingWeightCalculation 30/256 40/104 88.28%
SMAA_EdgeDetection 25/256 24/104 90.23%
SMAA_NeighborhoodBlending 14/256 26/104 94.53%

Compute shaders

Name VGPR SGPR Occupancy LDS Scratch
DebugDrawResolve 18/256 32/104 92.97% 0.00/64.00Kb 0Kb
FFX_ParallelSort_Count 12/256 20/104 95.31% 8.00/64.00Kb 0Kb
FFX_ParallelSort_Reduce 10/256 20/104 96.09% 0.50/64.00Kb 0Kb
FFX_ParallelSort_Scan 15/256 20/104 94.14% 2.50/64.00Kb 0Kb
FFX_ParallelSort_ScanAdd 16/256 24/104 93.75% 2.50/64.00Kb 0Kb
FFX_ParallelSort_Scatter 19/256 26/104 92.58% 2.00/64.00Kb 0Kb
FFX_ParallelSort_ScatterPayload 27/256 34/104 89.45% 2.00/64.00Kb 0Kb
FFX_ParallelSort_SetupIndirect 34/256 32/104 86.72% 0.00/64.00Kb 0Kb
Denoise 42/256 48/104 83.59% 0.00/64.00Kb 0Kb
MainPass 53/256 48/104 79.30% 0.00/64.00Kb 0Kb
PrefilterDepth 30/256 48/104 88.28% 0.50/64.00Kb 0Kb
InstancePickingResolve 9/256 20/104 96.48% 0.00/64.00Kb 0Kb
CullingCompaction 6/256 16/104 97.66% 0.00/64.00Kb 0Kb
CullingArgumentGeneration 21/256 28/104 91.80% 0.00/64.00Kb 0Kb
DrawCompaction 7/256 36/104 97.27% 0.00/64.00Kb 0Kb
DrawArgumentGeneration 18/256 44/104 92.97% 0.00/64.00Kb 0Kb
ClusterCulling 38/256 68/104 85.16% 0.00/64.00Kb 0Kb
ClusterToInstanceUpdate 11/256 16/104 95.70% 0.00/64.00Kb 0Kb
InstanceCulling 39/256 64/104 84.77% 0.00/64.00Kb 0Kb
LightCulling_CullLights 29/256 58/104 88.67% 0.50/64.00Kb 0Kb
WorldUpdate 38/256 32/104 85.16% 0.00/64.00Kb 0Kb

RDNA 3.5 (Radeon 8040S)

Pixel shaders

Name Permutation VGPR SGPR Occupancy
BilateralUpsample 12/256 34/104 95.31%
DebugDraw 13/256 22/104 94.92%
DebugDrawMesh 11/256 19/104 95.70%
DepthPyramidReduction 6/256 26/104 97.66%
Downsample 5/256 22/104 98.05%
EditorOutline_Composite 7/256 24/104 97.27%
EditorOutline_Initialize 8/256 32/104 96.88%
EditorOutline_JumpFlood 28/256 26/104 89.06%
ComplexSurfacePBR DEFAULT 72/256 86/104 71.88%
ComplexSurfacePBR ALPHA_TEST 72/256 86/104 71.88%
ComplexSurfacePBR DEFAULT ALPHA_TEST 72/256 86/104 71.88%
DefaultPBR DEFAULT 56/256 86/104 78.12%
DefaultPBR ALPHA_TEST 56/256 86/104 78.12%
DefaultPBR DEFAULT ALPHA_TEST 56/256 86/104 78.12%
Placeholder DEFAULT 49/256 82/104 80.86%
Placeholder ALPHA_TEST 49/256 82/104 80.86%
Placeholder DEFAULT ALPHA_TEST 49/256 82/104 80.86%
DefaultColorOnlyPBR DEFAULT 65/256 86/104 74.61%
DefaultColorOnlyPBR ALPHA_TEST 65/256 86/104 74.61%
DefaultColorOnlyPBR DEFAULT ALPHA_TEST 65/256 86/104 74.61%
OITResolve 4/256 16/104 98.44%
CubemapDownsample 7/256 22/104 97.27%
IrradianceFiltering 27/256 24/104 89.45%
PrecomputeDFG 13/256 8/104 94.92%
RadianceFiltering 23/256 24/104 91.02%
PostProcess 6/256 30/104 97.66%
Imgui 14/256 18/104 94.53%
SMAA_BlendingWeightCalculation 31/256 40/104 87.89%
SMAA_EdgeDetection 23/256 24/104 91.02%
SMAA_NeighborhoodBlending 17/256 26/104 93.36%

Compute shaders

Name VGPR SGPR Occupancy LDS Scratch
DebugDrawResolve 18/256 32/104 92.97% 0.00/64.00Kb 0Kb
FFX_ParallelSort_Count 12/256 20/104 95.31% 8.00/64.00Kb 0Kb
FFX_ParallelSort_Reduce 10/256 20/104 96.09% 0.50/64.00Kb 0Kb
FFX_ParallelSort_Scan 15/256 20/104 94.14% 2.50/64.00Kb 0Kb
FFX_ParallelSort_ScanAdd 16/256 24/104 93.75% 2.50/64.00Kb 0Kb
FFX_ParallelSort_Scatter 19/256 26/104 92.58% 2.00/64.00Kb 0Kb
FFX_ParallelSort_ScatterPayload 27/256 34/104 89.45% 2.00/64.00Kb 0Kb
FFX_ParallelSort_SetupIndirect 34/256 33/104 86.72% 0.00/64.00Kb 0Kb
Denoise 41/256 48/104 83.98% 0.00/64.00Kb 0Kb
MainPass 51/256 48/104 80.08% 0.00/64.00Kb 0Kb
PrefilterDepth 32/256 48/104 87.50% 0.50/64.00Kb 0Kb
InstancePickingResolve 9/256 20/104 96.48% 0.00/64.00Kb 0Kb
CullingCompaction 6/256 16/104 97.66% 0.00/64.00Kb 0Kb
CullingArgumentGeneration 21/256 28/104 91.80% 0.00/64.00Kb 0Kb
DrawCompaction 7/256 36/104 97.27% 0.00/64.00Kb 0Kb
DrawArgumentGeneration 18/256 44/104 92.97% 0.00/64.00Kb 0Kb
ClusterCulling 40/256 68/104 84.38% 0.00/64.00Kb 0Kb
ClusterToInstanceUpdate 11/256 16/104 95.70% 0.00/64.00Kb 0Kb
InstanceCulling 39/256 62/104 84.77% 0.00/64.00Kb 0Kb
LightCulling_CullLights 22/256 62/104 91.41% 0.50/64.00Kb 0Kb
WorldUpdate 38/256 32/104 85.16% 0.00/64.00Kb 0Kb

RDNA 4.0 (RX 9060)

Pixel shaders

Name Permutation VGPR SGPR Occupancy
BilateralUpsample 12/256 34/106 95.31%
DebugDraw 13/256 22/106 94.92%
DebugDrawMesh 11/256 19/106 95.70%
DepthPyramidReduction 6/256 26/106 97.66%
Downsample 5/256 22/106 98.05%
EditorOutline_Composite 7/256 22/106 97.27%
EditorOutline_Initialize 8/256 32/106 96.88%
EditorOutline_JumpFlood 29/256 22/106 88.67%
ComplexSurfacePBR DEFAULT 70/256 86/106 72.66%
ComplexSurfacePBR ALPHA_TEST 70/256 86/106 72.66%
ComplexSurfacePBR DEFAULT ALPHA_TEST 70/256 86/106 72.66%
DefaultPBR DEFAULT 56/256 86/106 78.12%
DefaultPBR ALPHA_TEST 56/256 86/106 78.12%
DefaultPBR DEFAULT ALPHA_TEST 56/256 86/106 78.12%
Placeholder DEFAULT 52/256 82/106 79.69%
Placeholder ALPHA_TEST 52/256 82/106 79.69%
Placeholder DEFAULT ALPHA_TEST 52/256 82/106 79.69%
DefaultColorOnlyPBR DEFAULT 70/256 86/106 72.66%
DefaultColorOnlyPBR ALPHA_TEST 70/256 86/106 72.66%
DefaultColorOnlyPBR DEFAULT ALPHA_TEST 70/256 86/106 72.66%
OITResolve 4/256 12/106 98.44%
CubemapDownsample 7/256 18/106 97.27%
IrradianceFiltering 27/256 24/106 89.45%
PrecomputeDFG 13/256 8/106 94.92%
RadianceFiltering 22/256 24/106 91.41%
PostProcess 6/256 34/106 97.66%
Imgui 11/256 18/106 95.70%
SMAA_BlendingWeightCalculation 30/256 40/106 88.28%
SMAA_EdgeDetection 23/256 18/106 91.02%
SMAA_NeighborhoodBlending 17/256 22/106 93.36%

Compute shaders

Name VGPR SGPR Occupancy LDS Scratch
DebugDrawResolve 18/256 32/106 92.97% 0.00/0.00Kb 0Kb
FFX_ParallelSort_Count 12/256 16/106 95.31% 8.00/8.00Kb 0Kb
FFX_ParallelSort_Reduce 10/256 20/106 96.09% 0.50/0.50Kb 0Kb
FFX_ParallelSort_Scan 15/256 20/106 94.14% 2.50/2.50Kb 0Kb
FFX_ParallelSort_ScanAdd 16/256 24/106 93.75% 2.50/2.50Kb 0Kb
FFX_ParallelSort_Scatter 19/256 24/106 92.58% 1.56/2.00Kb 0Kb
FFX_ParallelSort_ScatterPayload 28/256 34/106 89.06% 1.56/2.00Kb 0Kb
FFX_ParallelSort_SetupIndirect 34/256 33/106 86.72% 0.00/0.00Kb 0Kb
Denoise 41/256 44/106 83.98% 0.00/0.00Kb 0Kb
MainPass 52/256 48/106 79.69% 0.00/0.00Kb 0Kb
PrefilterDepth 18/256 36/106 92.97% 0.25/0.50Kb 0Kb
InstancePickingResolve 9/256 20/106 96.48% 0.00/0.00Kb 0Kb
CullingCompaction 6/256 16/106 97.66% 0.00/0.00Kb 0Kb
CullingArgumentGeneration 21/256 28/106 91.80% 0.00/0.00Kb 0Kb
DrawCompaction 7/256 36/106 97.27% 0.00/0.00Kb 0Kb
DrawArgumentGeneration 18/256 44/106 92.97% 0.00/0.00Kb 0Kb
ClusterCulling 38/256 68/106 85.16% 0.00/0.00Kb 0Kb
ClusterToInstanceUpdate 11/256 16/106 95.70% 0.00/0.00Kb 0Kb
InstanceCulling 39/256 64/106 84.77% 0.00/0.00Kb 0Kb
LightCulling_CullLights 22/256 62/106 91.41% 0.11/0.50Kb 0Kb
WorldUpdate 38/256 32/106 85.16% 0.00/0.00Kb 0Kb

Coding guidelines

Rendering

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