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element/wayland: Add blur background-effect

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Victoria Brekenfeld 2026-03-04 19:02:29 +01:00 • committed by Victoria Brekenfeld
parent e4c0716951
commit a9bf89d8b2
10 changed files with 747 additions and 5 deletions
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27
src/backend/render/shaders/blur_upsample.frag Normal file
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#version 100
precision highp float;
varying vec2 v_coords;
uniform sampler2D tex;
uniform vec2 half_pixel;
uniform float offset;
uniform float alpha;
#if defined(DEBUG_FLAGS)
uniform float tint;
#endif
void main() {
vec4 sum = texture2D(tex, v_coords + vec2(-half_pixel.x * 2.0, 0.0) * offset);
sum += texture2D(tex, v_coords + vec2(-half_pixel.x, half_pixel.y) * offset) * 2.0;
sum += texture2D(tex, v_coords + vec2(0.0, half_pixel.y * 2.0) * offset);
sum += texture2D(tex, v_coords + vec2(half_pixel.x, half_pixel.y) * offset) * 2.0;
sum += texture2D(tex, v_coords + vec2(half_pixel.x * 2.0, 0.0) * offset);
sum += texture2D(tex, v_coords + vec2(half_pixel.x, -half_pixel.y) * offset) * 2.0;
sum += texture2D(tex, v_coords + vec2(0.0, -half_pixel.y * 2.0) * offset);
sum += texture2D(tex, v_coords + vec2(-half_pixel.x, -half_pixel.y) * offset) * 2.0;
gl_FragColor = sum / sum.a;
}