28 lines
924 B
GLSL
28 lines
924 B
GLSL
|
#version 450 core
|
||
|
|
|
||
|
|
layout (std140, binding = 0) uniform sample_counts_log2_in
|
||
|
|
{
|
||
|
|
ivec4 sample_counts_log2;
|
||
|
|
};
|
||
|
|
|
||
|
|
layout (set = 2, binding = 0) uniform sampler2DMS srcMS;
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
uvec2 coords = uvec2(gl_FragCoord.xy);
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
gl_FragDepth = texelFetch(srcMS, shiftedCoords, sampleIdx).r;
|
||
|
|
}
|