89 lines
2.5 KiB
Plaintext
89 lines
2.5 KiB
Plaintext
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#version 450 core
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// +ve for MsToNonMs, -ve for reverse
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layout (constant_id = 0) const int convType = 0;
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layout (std140, binding = 0) uniform sample_counts_log2_in
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{
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ivec4 sample_counts_log2;
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};
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#define R8_ID 1
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#define R16_ID 2
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#define R32_ID 4
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#define RG32_ID 8
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#define RGBA32_ID 16
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#define R8_TYPE r8ui
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#define R16_TYPE r16ui
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#define R32_TYPE r32ui
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#define RG32_TYPE rg32ui
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#define RGBA32_TYPE rgba32ui
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#define DECLARE_BINDINGS(type) layout (set = 3, binding = 0, type##_TYPE) uniform uimage2DMS dstMS ## type; \
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layout (set = 3, binding = 0, type##_TYPE) uniform uimage2D dst ## type;
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#define CASE_SIZE(type) case type##_ID: imageSz = imageSize(dst ## type); break;
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#define CASE_CONVERT(type) case type##_ID: imageStore(dst ## type, ivec2(coords), texelFetch(srcMS, shiftedCoords, sampleIdx)); break; \
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case -type##_ID: imageStore(dstMS ## type, shiftedCoords, sampleIdx, texelFetch(src, ivec2(coords), 0)); break;
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// src tex
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layout (set = 2, binding = 0) uniform usampler2DMS srcMS;
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layout (set = 2, binding = 0) uniform usampler2D src;
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// dst img
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DECLARE_BINDINGS(R8)
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DECLARE_BINDINGS(R16)
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DECLARE_BINDINGS(R32)
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DECLARE_BINDINGS(RG32)
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DECLARE_BINDINGS(RGBA32)
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layout (local_size_x = 32, local_size_y = 32, local_size_z = 1) in;
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void main()
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{
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uvec2 coords = gl_GlobalInvocationID.xy;
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ivec2 imageSz = ivec2(0, 0);
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switch (convType)
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{
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case 0: break;
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CASE_SIZE(R8 )
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CASE_SIZE(R16 )
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CASE_SIZE(R32 )
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CASE_SIZE(RG32 )
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CASE_SIZE(RGBA32)
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default:
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imageSz = textureSize(src, 0);
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break;
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}
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if (int(coords.x) >= imageSz.x || int(coords.y) >= imageSz.y)
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{
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return;
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}
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int deltaX = sample_counts_log2.x - sample_counts_log2.z;
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int deltaY = sample_counts_log2.y - sample_counts_log2.w;
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int samplesInXLog2 = sample_counts_log2.z;
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int samplesInYLog2 = sample_counts_log2.w;
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int samplesInX = 1 << samplesInXLog2;
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int samplesInY = 1 << samplesInYLog2;
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int sampleIdx = ((int(coords.x) >> deltaX) & (samplesInX - 1)) | (((int(coords.y) >> deltaY) & (samplesInY - 1)) << samplesInXLog2);
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samplesInXLog2 = sample_counts_log2.x;
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samplesInYLog2 = sample_counts_log2.y;
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ivec2 shiftedCoords = ivec2(int(coords.x) >> samplesInXLog2, int(coords.y) >> samplesInYLog2);
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switch (convType)
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{
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CASE_CONVERT(R8 )
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CASE_CONVERT(R16 )
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CASE_CONVERT(R32 )
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CASE_CONVERT(RG32 )
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CASE_CONVERT(RGBA32)
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}
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}
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