20 lines
560 B
Plaintext
20 lines
560 B
Plaintext
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layout (local_size_x = 16, local_size_y = 16) in;
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layout (rgba32f, binding = 0) uniform image2D img;
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void main() {
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ivec2 gid = ivec2(gl_GlobalInvocationID.xy);
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gid.x = clamp(gid.x, 1, int(gl_NumWorkGroups.x*gl_WorkGroupSize.x)-2);
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gid.y = clamp(gid.y, 1, int(gl_NumWorkGroups.y*gl_WorkGroupSize.y)-2);
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vec4 sum = vec4(0);
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for (int y = -1; y <= 1; ++y) {
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for (int x = -1; x <= 1; ++x) {
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sum += imageLoad(img, gid + ivec2(x,y));
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}
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}
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vec4 avg = sum / 9.0;
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barrier();
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imageStore(img, gid, avg);
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}
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