Correctly handle alpha in wgpu text shader

SecondHalfGames · Oct 23, 2023 · 2274a21 · 2274a21
1 parent afc561b
commit 2274a21
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/crates/yakui-wgpu/shaders/text.wgsl b/crates/yakui-wgpu/shaders/text.wgsl
@@ -31,6 +31,8 @@ fn vs_main(
 
 @fragment
 fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
-    var coverage = textureSample(coverage_texture, coverage_sampler, in.texcoord).r;
-    return in.color * coverage;
+    let coverage = textureSample(coverage_texture, coverage_sampler, in.texcoord).r;
+    let alpha = coverage * in.color.a;
+
+    return vec4(in.color.rgb * alpha, alpha);
 }