mirror of
https://github.com/italicsjenga/vello.git
synced 2024-10-17 23:11:30 +11:00
875c8badf4
This is one of the stages in the new element pipeline. It's a simple one, just a prefix sum of a couple counts, and some of it will probably get merged with a downstream stage, but we'll do it separately for now for convenience. This patch also contains an update to Vulkan tools 1.2.198, which accounts for the large diff of translated shaders.
95 lines
2.5 KiB
HLSL
95 lines
2.5 KiB
HLSL
struct DrawMonoid
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{
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uint path_ix;
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uint clip_ix;
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};
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static const uint3 gl_WorkGroupSize = uint3(512u, 1u, 1u);
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static const DrawMonoid _18 = { 0u, 0u };
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RWByteAddressBuffer _57 : register(u0);
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static uint3 gl_LocalInvocationID;
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static uint3 gl_GlobalInvocationID;
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struct SPIRV_Cross_Input
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{
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uint3 gl_LocalInvocationID : SV_GroupThreadID;
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uint3 gl_GlobalInvocationID : SV_DispatchThreadID;
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};
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groupshared DrawMonoid sh_scratch[512];
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DrawMonoid combine_tag_monoid(DrawMonoid a, DrawMonoid b)
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{
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DrawMonoid c;
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c.path_ix = a.path_ix + b.path_ix;
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c.clip_ix = a.clip_ix + b.clip_ix;
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return c;
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}
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DrawMonoid tag_monoid_identity()
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{
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return _18;
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}
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void comp_main()
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{
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uint ix = gl_GlobalInvocationID.x * 8u;
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DrawMonoid _61;
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_61.path_ix = _57.Load(ix * 8 + 0);
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_61.clip_ix = _57.Load(ix * 8 + 4);
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DrawMonoid local[8];
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local[0].path_ix = _61.path_ix;
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local[0].clip_ix = _61.clip_ix;
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DrawMonoid param_1;
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for (uint i = 1u; i < 8u; i++)
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{
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DrawMonoid param = local[i - 1u];
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DrawMonoid _88;
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_88.path_ix = _57.Load((ix + i) * 8 + 0);
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_88.clip_ix = _57.Load((ix + i) * 8 + 4);
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param_1.path_ix = _88.path_ix;
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param_1.clip_ix = _88.clip_ix;
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local[i] = combine_tag_monoid(param, param_1);
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}
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DrawMonoid agg = local[7];
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sh_scratch[gl_LocalInvocationID.x] = agg;
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for (uint i_1 = 0u; i_1 < 9u; i_1++)
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{
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GroupMemoryBarrierWithGroupSync();
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if (gl_LocalInvocationID.x >= (1u << i_1))
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{
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DrawMonoid other = sh_scratch[gl_LocalInvocationID.x - (1u << i_1)];
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DrawMonoid param_2 = other;
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DrawMonoid param_3 = agg;
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agg = combine_tag_monoid(param_2, param_3);
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}
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GroupMemoryBarrierWithGroupSync();
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sh_scratch[gl_LocalInvocationID.x] = agg;
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}
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GroupMemoryBarrierWithGroupSync();
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DrawMonoid row = tag_monoid_identity();
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if (gl_LocalInvocationID.x > 0u)
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{
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row = sh_scratch[gl_LocalInvocationID.x - 1u];
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}
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for (uint i_2 = 0u; i_2 < 8u; i_2++)
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{
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DrawMonoid param_4 = row;
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DrawMonoid param_5 = local[i_2];
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DrawMonoid m = combine_tag_monoid(param_4, param_5);
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uint _178 = ix + i_2;
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_57.Store(_178 * 8 + 0, m.path_ix);
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_57.Store(_178 * 8 + 4, m.clip_ix);
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}
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}
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[numthreads(512, 1, 1)]
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void main(SPIRV_Cross_Input stage_input)
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{
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gl_LocalInvocationID = stage_input.gl_LocalInvocationID;
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gl_GlobalInvocationID = stage_input.gl_GlobalInvocationID;
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comp_main();
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}
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