mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2026-02-05 04:06:11 -05:00
22 lines
552 B
GLSL
22 lines
552 B
GLSL
#version 450
|
|
|
|
layout(location = 0) out vec4 out_color;
|
|
layout(push_constant) uniform UBO {
|
|
layout(offset = 80) vec4 color;
|
|
vec4 dst_bounds; // x, y, x+width, y+height in output coordinates
|
|
} data;
|
|
|
|
float compute_coverage() {
|
|
vec4 d = vec4(
|
|
gl_FragCoord.x - data.dst_bounds.x,
|
|
gl_FragCoord.y - data.dst_bounds.y,
|
|
data.dst_bounds.z - gl_FragCoord.x,
|
|
data.dst_bounds.w - gl_FragCoord.y
|
|
);
|
|
vec4 cov = clamp(d + 0.5, 0.0, 1.0);
|
|
return min(min(cov.x, cov.y), min(cov.z, cov.w));
|
|
}
|
|
|
|
void main() {
|
|
out_color = data.color * compute_coverage();
|
|
}
|