Henrik Rydgård hrydgard
sebbbi
/ SinglePassMipPyramid.hlsl
Last active
January 12, 2024 07:16
Single pass globallycoherent mip pyramid generation
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| // NOTE: Must bind 8x single mip RWTexture views, because HLSL doesn't have .mips member for RWTexture2D. (SRVs only have .mips member) | |
| // NOTE: globallycoherent attribute is needed. Without it writes aren't guaranteed to be seen by other groups | |
| globallycoherent RWTexture2D<float> MipTextures[8]; | |
| RWTexture2D<uint> Counters[8]; | |
| groupshared uint CounterReturnLDS; | |
| [numthreads(16, 16, 1)] | |
| void GenerateMipPyramid(uint3 Tid : SV_DispatchThreadID, uint3 Group : SV_GroupId, uint Gix : SV_GroupIndex) | |
| { | |
| [unroll] |