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shaders: Use half-pixels for the outline

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Victoria Brekenfeld 2025-12-15 18:12:57 +01:00 • committed by Victoria Brekenfeld
parent fc7bbd7814
commit 2c9857fdfc
2 changed files with 3 additions and 3 deletions
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2
src/backend/render/mod.rs
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@ -208,7 +208,7 @@ impl IndicatorShader {
alpha: f32, alpha: f32,
active_window_hint: [f32; 3], active_window_hint: [f32; 3],
) -> PixelShaderElement { ) -> PixelShaderElement {
let t = (thickness as i32) / 2; let t = thickness as i32;
element_geo.loc -= (t, t).into(); element_geo.loc -= (t, t).into();
element_geo.size += (t * 2, t * 2).into(); element_geo.size += (t * 2, t * 2).into();

2
src/backend/render/shaders/rounded_outline.frag
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@ -24,7 +24,7 @@ void main() {
vec4 mix_color; vec4 mix_color;
float distance = rounded_box(location - center, (size / 2.0) - (thickness / 2.0), radius); float distance = rounded_box(location - center, (size / 2.0) - (thickness / 2.0), radius);
float smoothedAlpha = 1.0 - smoothstep(0.0, 1.0, abs(distance) - (thickness / 2.0)); float smoothedAlpha = 1.0 - smoothstep(-0.5, 0.5, abs(distance) - (thickness / 2.0));
mix_color = mix(vec4(0.0, 0.0, 0.0, 0.0), vec4(color, alpha), smoothedAlpha); mix_color = mix(vec4(0.0, 0.0, 0.0, 0.0), vec4(color, alpha), smoothedAlpha);