57 lines
2.7 KiB
GLSL
57 lines
2.7 KiB
GLSL
#pragma clang diagnostic ignored "-Wmissing-prototypes"
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#include <metal_stdlib>
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#include <simd/simd.h>
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using namespace metal;
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struct main0_out
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{
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uint2 FragColor [[color(0)]];
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};
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inline uint spvSubgroupBallotFindLSB(uint4 ballot, uint gl_SubgroupSize)
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{
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uint4 mask = uint4(extract_bits(0xFFFFFFFF, 0, min(gl_SubgroupSize, 32u)), extract_bits(0xFFFFFFFF, 0, (uint)max((int)gl_SubgroupSize - 32, 0)), uint2(0));
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ballot &= mask;
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return select(ctz(ballot.x), select(32 + ctz(ballot.y), select(64 + ctz(ballot.z), select(96 + ctz(ballot.w), uint(-1), ballot.w == 0), ballot.z == 0), ballot.y == 0), ballot.x == 0);
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}
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inline uint spvSubgroupBallotFindMSB(uint4 ballot, uint gl_SubgroupSize)
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{
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uint4 mask = uint4(extract_bits(0xFFFFFFFF, 0, min(gl_SubgroupSize, 32u)), extract_bits(0xFFFFFFFF, 0, (uint)max((int)gl_SubgroupSize - 32, 0)), uint2(0));
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ballot &= mask;
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return select(128 - (clz(ballot.w) + 1), select(96 - (clz(ballot.z) + 1), select(64 - (clz(ballot.y) + 1), select(32 - (clz(ballot.x) + 1), uint(-1), ballot.x == 0), ballot.y == 0), ballot.z == 0), ballot.w == 0);
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}
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inline uint spvPopCount4(uint4 ballot)
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{
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return popcount(ballot.x) + popcount(ballot.y) + popcount(ballot.z) + popcount(ballot.w);
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}
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inline uint spvSubgroupBallotBitCount(uint4 ballot, uint gl_SubgroupSize)
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{
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uint4 mask = uint4(extract_bits(0xFFFFFFFF, 0, min(gl_SubgroupSize, 32u)), extract_bits(0xFFFFFFFF, 0, (uint)max((int)gl_SubgroupSize - 32, 0)), uint2(0));
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return spvPopCount4(ballot & mask);
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}
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inline uint spvSubgroupBallotInclusiveBitCount(uint4 ballot, uint gl_SubgroupInvocationID)
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{
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uint4 mask = uint4(extract_bits(0xFFFFFFFF, 0, min(gl_SubgroupInvocationID + 1, 32u)), extract_bits(0xFFFFFFFF, 0, (uint)max((int)gl_SubgroupInvocationID + 1 - 32, 0)), uint2(0));
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return spvPopCount4(ballot & mask);
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}
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inline uint spvSubgroupBallotExclusiveBitCount(uint4 ballot, uint gl_SubgroupInvocationID)
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{
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uint4 mask = uint4(extract_bits(0xFFFFFFFF, 0, min(gl_SubgroupInvocationID, 32u)), extract_bits(0xFFFFFFFF, 0, (uint)max((int)gl_SubgroupInvocationID - 32, 0)), uint2(0));
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return spvPopCount4(ballot & mask);
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}
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fragment main0_out main0(uint gl_SubgroupInvocationID [[thread_index_in_simdgroup]], uint gl_SubgroupSize [[threads_per_simdgroup]])
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{
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main0_out out = {};
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out.FragColor.x = (((spvSubgroupBallotFindLSB(uint4(1u, 2u, 3u, 4u), gl_SubgroupSize) + spvSubgroupBallotFindMSB(uint4(1u, 2u, 3u, 4u), gl_SubgroupSize)) + spvSubgroupBallotBitCount(uint4(1u, 2u, 3u, 4u), gl_SubgroupSize)) + spvSubgroupBallotInclusiveBitCount(uint4(1u, 2u, 3u, 4u), gl_SubgroupInvocationID)) + spvSubgroupBallotExclusiveBitCount(uint4(1u, 2u, 3u, 4u), gl_SubgroupInvocationID);
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return out;
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}
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