31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
#pragma kernel RTAOApplyIntensity
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#pragma only_renderers d3d11 ps5
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// HDRP generic includes
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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#include "Packages/com.unity.render-pipelines.high-definition/Runtime/ShaderLibrary/ShaderVariables.hlsl"
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#pragma only_renderers d3d11 ps5
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// #pragma enable_d3d11_debug_symbols
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// Tile size of this compute
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#define RAYTRACING_AMBIENT_OCCLUSION_TILE_SIZE 8
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float _RaytracingAOIntensity;
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RW_TEXTURE2D_X(float, _AmbientOcclusionTextureRW);
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[numthreads(RAYTRACING_AMBIENT_OCCLUSION_TILE_SIZE, RAYTRACING_AMBIENT_OCCLUSION_TILE_SIZE, 1)]
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void RTAOApplyIntensity(uint3 dispatchThreadId : SV_DispatchThreadID, uint2 groupThreadId : SV_GroupThreadID, uint2 groupId : SV_GroupID)
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{
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UNITY_XR_ASSIGN_VIEW_INDEX(dispatchThreadId.z);
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// Compute the pixel position to process
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uint2 currentCoord = groupId * RAYTRACING_AMBIENT_OCCLUSION_TILE_SIZE + groupThreadId;
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// Grab the AO value without the intensity
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float value = _AmbientOcclusionTextureRW[COORD_TEXTURE2D_X(currentCoord)];
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_AmbientOcclusionTextureRW[COORD_TEXTURE2D_X(currentCoord)] = 1.0 - PositivePow(value, _RaytracingAOIntensity);
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}
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