v4k-git-backup/demos/art/shaders/temperature.glsl

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2023-09-09 00:36:52 +00:00
layout (local_size_x = 16, local_size_y = 16) in;
layout (rgba32f, binding = 0) uniform image2D img;
void main() {
ivec2 gid = ivec2(gl_GlobalInvocationID.xy);
gid.x = clamp(gid.x, 1, int(gl_NumWorkGroups.x*gl_WorkGroupSize.x)-2);
gid.y = clamp(gid.y, 1, int(gl_NumWorkGroups.y*gl_WorkGroupSize.y)-2);
vec4 sum = vec4(0);
for (int y = -1; y <= 1; ++y) {
for (int x = -1; x <= 1; ++x) {
sum += imageLoad(img, gid + ivec2(x,y));
}
}
vec4 avg = sum / 9.0;
barrier();
imageStore(img, gid, avg);
}