mirror of
https://github.com/KhronosGroup/glslang
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87 lines
4.1 KiB
Plaintext
87 lines
4.1 KiB
Plaintext
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#version 450
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#extension GL_KHR_shader_subgroup_ballot: enable
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layout (local_size_x = 8, local_size_y = 8, local_size_z = 1) in;
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layout(binding = 0) buffer Buffers
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{
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vec4 f4;
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ivec4 i4;
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uvec4 u4;
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dvec4 d4;
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} data[4];
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void main()
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{
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uint invocation = (gl_SubgroupInvocationID + gl_SubgroupSize) % 4;
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uvec4 relMask = gl_SubgroupEqMask +
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gl_SubgroupGeMask +
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gl_SubgroupGtMask +
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gl_SubgroupLeMask +
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gl_SubgroupLtMask;
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uvec4 result = subgroupBallot(true);
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data[invocation].u4.x = subgroupBallotBitCount(result);
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data[invocation].u4.y = subgroupBallotBitExtract(result, 0) ? 1 : 0;
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data[invocation].u4.z = subgroupBallotInclusiveBitCount(result) + subgroupBallotExclusiveBitCount(result);
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data[invocation].u4.w = subgroupBallotFindLSB(result) + subgroupBallotFindMSB(result);
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if ((relMask == result) && subgroupInverseBallot(data[0].u4))
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{
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data[invocation].f4.x = subgroupBroadcast(data[0].f4.x, 3);
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data[invocation].f4.xy = subgroupBroadcast(data[1].f4.xy, 3);
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data[invocation].f4.xyz = subgroupBroadcast(data[2].f4.xyz, 3);
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data[invocation].f4 = subgroupBroadcast(data[3].f4, 3);
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data[invocation].i4.x = subgroupBroadcast(data[0].i4.x, 2);
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data[invocation].i4.xy = subgroupBroadcast(data[1].i4.xy, 2);
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data[invocation].i4.xyz = subgroupBroadcast(data[2].i4.xyz, 2);
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data[invocation].i4 = subgroupBroadcast(data[3].i4, 2);
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data[invocation].u4.x = subgroupBroadcast(data[0].u4.x, 1);
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data[invocation].u4.xy = subgroupBroadcast(data[1].u4.xy, 1);
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data[invocation].u4.xyz = subgroupBroadcast(data[2].u4.xyz, 1);
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data[invocation].u4 = subgroupBroadcast(data[3].u4, 1);
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data[invocation].d4.x = subgroupBroadcast(data[0].d4.x, 0);
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data[invocation].d4.xy = subgroupBroadcast(data[1].d4.xy, 0);
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data[invocation].d4.xyz = subgroupBroadcast(data[2].d4.xyz, 0);
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data[invocation].d4 = subgroupBroadcast(data[3].d4, 0);
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data[invocation].i4.x = int(subgroupBroadcast(data[0].i4.x < 0, 1));
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data[invocation].i4.xy = ivec2(subgroupBroadcast(lessThan(data[1].i4.xy, ivec2(0)), 1));
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data[invocation].i4.xyz = ivec3(subgroupBroadcast(lessThan(data[1].i4.xyz, ivec3(0)), 1));
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data[invocation].i4 = ivec4(subgroupBroadcast(lessThan(data[1].i4, ivec4(0)), 1));
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}
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else
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{
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data[invocation].f4.x = subgroupBroadcastFirst(data[0].f4.x);
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data[invocation].f4.xy = subgroupBroadcastFirst(data[1].f4.xy);
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data[invocation].f4.xyz = subgroupBroadcastFirst(data[2].f4.xyz);
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data[invocation].f4 = subgroupBroadcastFirst(data[3].f4);
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data[invocation].i4.x = subgroupBroadcastFirst(data[0].i4.x);
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data[invocation].i4.xy = subgroupBroadcastFirst(data[1].i4.xy);
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data[invocation].i4.xyz = subgroupBroadcastFirst(data[2].i4.xyz);
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data[invocation].i4 = subgroupBroadcastFirst(data[3].i4);
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data[invocation].u4.x = subgroupBroadcastFirst(data[0].u4.x);
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data[invocation].u4.xy = subgroupBroadcastFirst(data[1].u4.xy);
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data[invocation].u4.xyz = subgroupBroadcastFirst(data[2].u4.xyz);
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data[invocation].u4 = subgroupBroadcastFirst(data[3].u4);
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data[invocation].d4.x = subgroupBroadcastFirst(data[0].d4.x);
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data[invocation].d4.xy = subgroupBroadcastFirst(data[1].d4.xy);
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data[invocation].d4.xyz = subgroupBroadcastFirst(data[2].d4.xyz);
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data[invocation].d4 = subgroupBroadcastFirst(data[3].d4);
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data[invocation].i4.x = int(subgroupBroadcastFirst(data[0].i4.x < 0));
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data[invocation].i4.xy = ivec2(subgroupBroadcastFirst(lessThan(data[1].i4.xy, ivec2(0))));
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data[invocation].i4.xyz = ivec3(subgroupBroadcastFirst(lessThan(data[1].i4.xyz, ivec3(0))));
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data[invocation].i4 = ivec4(subgroupBroadcastFirst(lessThan(data[1].i4, ivec4(0))));
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}
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}
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