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#jira UE-171674 #rb robert.srinivasiah #preflight 639785c5c16855964d56d502 [CL 23481504 by christopher fiala in ue5-main branch]
37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "../Common.ush"
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RWTexture2D<uint> RWOutputTexture;
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Texture2D<uint> SourceTexture0;
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Texture2D<uint> SourceTexture1;
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uint2 DecodeShadingRate(uint EncodedRate)
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{
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uint2 DecodedRate;
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DecodedRate.x = ((1U << SHADING_RATE_DIMENSION_BITS) - 1U) & (EncodedRate >> SHADING_RATE_DIMENSION_BITS);
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DecodedRate.y = ((1U << SHADING_RATE_DIMENSION_BITS) - 1U) & EncodedRate;
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return DecodedRate;
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}
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uint2 EncodeShadingRate(uint2 DecodedRate)
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{
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return (DecodedRate.x << SHADING_RATE_DIMENSION_BITS) + DecodedRate.y;
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}
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uint ShadingRateMax(uint InputRate0, uint InputRate1)
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{
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uint2 DecodedRate0 = DecodeShadingRate(InputRate0);
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uint2 DecodedRate1 = DecodeShadingRate(InputRate1);
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uint2 DecodedMaxRate = max(DecodedRate0, DecodedRate1);
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return EncodeShadingRate(DecodedMaxRate);
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}
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[numthreads(THREADGROUP_SIZEX, THREADGROUP_SIZEY, 1)]
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void CombineShadingRateTextures(uint3 DispatchThreadId : SV_DispatchThreadID)
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{
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const uint2 TexelCoord = DispatchThreadId.xy;
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RWOutputTexture[TexelCoord] = ShadingRateMax(SourceTexture0[TexelCoord], SourceTexture1[TexelCoord]);
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}
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