virtualx-engine/servers/rendering/rasterizer_rd/shaders/ssao_minify.glsl
Rémi Verschelde c74d65cec8 GLSL: Change shader type specifier from [vertex] to #[vertex]
The added `#` prevents clang-format from misinterpreting the meaning
of this statement and thus messing up the formatting of the next
lines up until the first `layout` statement.

Similarly, a semicolon is now enforced on `versions` defines to
prevent clang-format from messing up formatting and putting them
all on a single line. Note: In its current state the code will
ignore chained statements on a single line separated by a semicolon.

Also removed some extraneous lines missed in previous style changes
or added by mistake with said changes (e.g. after uniform definitions
that clang-format messes up somewhat too, but we live with it).
2020-05-18 10:58:14 +02:00

45 lines
1.2 KiB
GLSL

#[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));
}