Ryujinx/Ryujinx.Graphics.Vulkan/Shaders/ColorCopyToNonMsComputeShaderSource.comp

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#version 450 core
layout (std140, binding = 0) uniform sample_counts_log2_in
{
ivec4 sample_counts_log2;
};
layout (set = 2, binding = 0) uniform usampler2DMS srcMS;
layout (set = 3, binding = 0) writeonly uniform uimage2D dst;
layout (local_size_x = 32, local_size_y = 32, local_size_z = 1) in;
void main()
{
uvec2 coords = gl_GlobalInvocationID.xy;
ivec2 imageSz = imageSize(dst);
if (int(coords.x) >= imageSz.x || int(coords.y) >= imageSz.y)
{
return;
}
int deltaX = sample_counts_log2.x - sample_counts_log2.z;
int deltaY = sample_counts_log2.y - sample_counts_log2.w;
int samplesInXLog2 = sample_counts_log2.z;
int samplesInYLog2 = sample_counts_log2.w;
int samplesInX = 1 << samplesInXLog2;
int samplesInY = 1 << samplesInYLog2;
int sampleIdx = ((int(coords.x) >> deltaX) & (samplesInX - 1)) | (((int(coords.y) >> deltaY) & (samplesInY - 1)) << samplesInXLog2);
samplesInXLog2 = sample_counts_log2.x;
samplesInYLog2 = sample_counts_log2.y;
ivec2 shiftedCoords = ivec2(int(coords.x) >> samplesInXLog2, int(coords.y) >> samplesInYLog2);
imageStore(dst, ivec2(coords), texelFetch(srcMS, shiftedCoords, sampleIdx));
}