diff options
Diffstat (limited to 'servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl')
| -rw-r--r-- | servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl b/servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl new file mode 100644 index 0000000000..263fca386f --- /dev/null +++ b/servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl @@ -0,0 +1,45 @@ +#[compute] + +#version 450 + +VERSION_DEFINES + +layout(local_size_x = 8, local_size_y = 8, local_size_z = 1) in; + +layout(push_constant, binding = 1, std430) uniform Params { + vec2 pixel_size; + float z_far; + float z_near; + ivec2 source_size; + bool orthogonal; + uint pad; +} +params; + +#ifdef MINIFY_START +layout(set = 0, binding = 0) uniform sampler2D source_texture; +#else +layout(r32f, set = 0, binding = 0) uniform restrict readonly image2D source_image; +#endif +layout(r32f, set = 1, binding = 0) uniform restrict writeonly image2D dest_image; + +void main() { + ivec2 pos = ivec2(gl_GlobalInvocationID.xy); + + if (any(greaterThan(pos, params.source_size >> 1))) { //too large, do nothing + return; + } + +#ifdef MINIFY_START + float depth = texelFetch(source_texture, pos << 1, 0).r * 2.0 - 1.0; + if (params.orthogonal) { + depth = ((depth + (params.z_far + params.z_near) / (params.z_far - params.z_near)) * (params.z_far - params.z_near)) / 2.0; + } else { + depth = 2.0 * params.z_near * params.z_far / (params.z_far + params.z_near - depth * (params.z_far - params.z_near)); + } +#else + float depth = imageLoad(source_image, pos << 1).r; +#endif + + imageStore(dest_image, pos, vec4(depth)); +} |