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37 lines
836 B
37 lines
836 B
alias number = f32;
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struct VectorBatch {
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size: vec4<u32>,
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data: array<u32>,
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}
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struct MatrixBatch {
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size: vec4<u32>,
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data: array<vec4<number>>,
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}
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@group(0) @binding(0)
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var<storage, read> v: VectorBatch;
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@group(0) @binding(1)
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var<storage, read> m: MatrixBatch;
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@group(0) @binding(2)
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var<storage, read_write> result: MatrixBatch;
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@compute @workgroup_size(1)
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fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
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result.size = m.size;
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var vc = result.size.x / 4;
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var resi = (global_id.z * result.size.y + global_id.y) * vc + global_id.x;
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result.data[resi] = vec4(0f);
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var mi = global_id.z * m.size.y * vc + global_id.x;
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var vi = global_id.z * v.size.x;
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for (var i = 0u; i < v.size.x; i++) {
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if (global_id.y == v.data[vi]) {
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result.data[resi] += m.data[mi];
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}
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mi += vc;
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vi++;
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}
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}
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