35 lines
833 B
GLSL
35 lines
833 B
GLSL
#[compute]
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#version 450
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// Invocations in the (x, y, z) dimension
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layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in;
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layout(rgba16f, set = 0, binding = 0) uniform image2D color_image;
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// Our push constant
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layout(push_constant, std430) uniform Params {
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vec2 raster_size;
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vec2 reserved;
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} params;
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// The code we want to execute in each invocation
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void main() {
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ivec2 uv = ivec2(gl_GlobalInvocationID.xy);
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ivec2 size = ivec2(params.raster_size);
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// Prevent reading/writing out of bounds.
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if (uv.x >= size.x || uv.y >= size.y) {
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return;
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}
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// Read from our color buffer.
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vec4 color = imageLoad(color_image, uv);
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// Apply our changes.
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float gray = color.r * 0.2125 + color.g * 0.7154 + color.b * 0.0721;
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color.rgb = vec3(gray);
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// Write back to our color buffer.
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imageStore(color_image, uv, color);
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}
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