106 lines
2.9 KiB
Text
106 lines
2.9 KiB
Text
|
#[compute]
|
||
|
|
|
||
|
|
#version 450
|
||
|
|
|
||
|
|
VERSION_DEFINES
|
||
|
|
|
||
|
|
#define BLOCK_SIZE 8
|
||
|
|
|
||
|
|
layout(local_size_x = BLOCK_SIZE, local_size_y = BLOCK_SIZE, local_size_z = 1) in;
|
||
|
|
|
||
|
|
#ifdef MODE_REDUCE
|
||
|
|
|
||
|
|
shared float tmp_data[BLOCK_SIZE * BLOCK_SIZE];
|
||
|
|
const uint swizzle_table[BLOCK_SIZE] = uint[](0, 4, 2, 6, 1, 5, 3, 7);
|
||
|
|
const uint unswizzle_table[BLOCK_SIZE] = uint[](0, 0, 0, 1, 0, 2, 1, 3);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
layout(r32f, set = 0, binding = 0) uniform restrict readonly image2D source_depth;
|
||
|
|
layout(r32f, set = 0, binding = 1) uniform restrict writeonly image2D dst_depth;
|
||
|
|
|
||
|
|
layout(push_constant, binding = 1, std430) uniform Params {
|
||
|
|
ivec2 source_size;
|
||
|
|
ivec2 source_offset;
|
||
|
|
uint min_size;
|
||
|
|
uint gaussian_kernel_version;
|
||
|
|
ivec2 filter_dir;
|
||
|
|
}
|
||
|
|
params;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
#ifdef MODE_REDUCE
|
||
|
|
|
||
|
|
uvec2 pos = gl_LocalInvocationID.xy;
|
||
|
|
|
||
|
|
ivec2 image_offset = params.source_offset;
|
||
|
|
ivec2 image_pos = image_offset + ivec2(gl_GlobalInvocationID.xy);
|
||
|
|
uint dst_t = swizzle_table[pos.y] * BLOCK_SIZE + swizzle_table[pos.x];
|
||
|
|
tmp_data[dst_t] = imageLoad(source_depth, min(image_pos, params.source_size - ivec2(1))).r;
|
||
|
|
ivec2 image_size = params.source_size;
|
||
|
|
|
||
|
|
uint t = pos.y * BLOCK_SIZE + pos.x;
|
||
|
|
|
||
|
|
//neighbours
|
||
|
|
uint size = BLOCK_SIZE;
|
||
|
|
|
||
|
|
do {
|
||
|
|
groupMemoryBarrier();
|
||
|
|
barrier();
|
||
|
|
|
||
|
|
size >>= 1;
|
||
|
|
image_size >>= 1;
|
||
|
|
image_offset >>= 1;
|
||
|
|
|
||
|
|
if (all(lessThan(pos, uvec2(size)))) {
|
||
|
|
uint nx = t + size;
|
||
|
|
uint ny = t + (BLOCK_SIZE * size);
|
||
|
|
uint nxy = ny + size;
|
||
|
|
|
||
|
|
tmp_data[t] += tmp_data[nx];
|
||
|
|
tmp_data[t] += tmp_data[ny];
|
||
|
|
tmp_data[t] += tmp_data[nxy];
|
||
|
|
tmp_data[t] /= 4.0;
|
||
|
|
}
|
||
|
|
|
||
|
|
} while (size > params.min_size);
|
||
|
|
|
||
|
|
if (all(lessThan(pos, uvec2(size)))) {
|
||
|
|
image_pos = ivec2(unswizzle_table[size + pos.x], unswizzle_table[size + pos.y]);
|
||
|
|
image_pos += image_offset + ivec2(gl_WorkGroupID.xy) * int(size);
|
||
|
|
|
||
|
|
image_size = max(ivec2(1), image_size); //in case image size became 0
|
||
|
|
|
||
|
|
if (all(lessThan(image_pos, uvec2(image_size)))) {
|
||
|
|
imageStore(dst_depth, image_pos, vec4(tmp_data[t]));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef MODE_FILTER
|
||
|
|
|
||
|
|
ivec2 image_pos = params.source_offset + ivec2(gl_GlobalInvocationID.xy);
|
||
|
|
if (any(greaterThanEqual(image_pos, params.source_size))) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
ivec2 clamp_min = ivec2(params.source_offset);
|
||
|
|
ivec2 clamp_max = ivec2(params.source_size) - 1;
|
||
|
|
|
||
|
|
//gaussian kernel, size 9, sigma 4
|
||
|
|
const int kernel_size = 9;
|
||
|
|
const float gaussian_kernel[kernel_size * 3] = float[](
|
||
|
|
0.000229, 0.005977, 0.060598, 0.241732, 0.382928, 0.241732, 0.060598, 0.005977, 0.000229,
|
||
|
|
0.028532, 0.067234, 0.124009, 0.179044, 0.20236, 0.179044, 0.124009, 0.067234, 0.028532,
|
||
|
|
0.081812, 0.101701, 0.118804, 0.130417, 0.134535, 0.130417, 0.118804, 0.101701, 0.081812);
|
||
|
|
float accum = 0.0;
|
||
|
|
for (int i = 0; i < kernel_size; i++) {
|
||
|
|
ivec2 ofs = clamp(image_pos + params.filter_dir * (i - kernel_size / 2), clamp_min, clamp_max);
|
||
|
|
accum += imageLoad(source_depth, ofs).r * gaussian_kernel[params.gaussian_kernel_version + i];
|
||
|
|
}
|
||
|
|
|
||
|
|
imageStore(dst_depth, image_pos, vec4(accum));
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|