xref: /aosp_15_r20/external/skia/resources/sksl/compute/MatrixMultiply.compute (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1layout(local_size_x = 16, local_size_y = 16) in;
2
3layout(set=0, binding=0) buffer sizeBuffer {
4    int2[] sizes;  // in1, in2, out
5};
6layout(set=0, binding=1) readonly buffer inputs1  {
7    float data1[];
8};
9layout(set=0, binding=2) readonly buffer inputs2 {
10    float data2[];
11};
12layout(set=0, binding=3) writeonly buffer result {
13    float resultData[];
14};
15
16void main() {
17    sizes[2] = int2(sizes[0].x, sizes[1].y);
18
19    int2 resultCell = int2(sk_GlobalInvocationID.x, sk_GlobalInvocationID.y);
20    float result = 0.0;
21    for (int i = 0; i < sizes[0].y; ++i) {
22      int a = i + resultCell.x * sizes[0].y;
23      int b = resultCell.y + i * sizes[1].y;
24      result += data1[a] * data2[b];
25    }
26
27    int index = resultCell.y + resultCell.x * sizes[1].y;
28    resultData[index] = result;
29}
30