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Merge pull request #1383 from marcoarnulfo/fix/1381-generators-alpha

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Effects: 4-Color Gradient keeps the layer's alpha with Blending Mode None (refs #1381)
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BFlat
2026-10-16 18:08:08 +07:00
committed by GitHub
parent 7c733f4cc9 7df16a5e20
commit 74ed4dc423
2 changed files with 27 additions and 3 deletions
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crates/gpu/src/shaders/fx_generate.wgsl
+4 -2
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@@ -510,8 +510,10 @@ fn gen_fourcolor(@builtin(global_invocation_id) gid: vec3<u32>) {
let n = (hash_noise(u32(p.x), u32(p.y), P.u[0].y) - 0.5) * jitter * (8.0 / 255.0);
c += vec3<f32>(n);
}
let op = P.f[8].z;
textureStore(out, p, gen_blend(textureLoad(src, p, 0), vec4<f32>(c * op, op), P.u[0].x));
let o = textureLoad(src, p, 0);
// None keeps the layer's alpha, as the CPU path does (#1381).
let op = select(P.f[8].z, P.f[8].z * o.w, P.u[0].x == 255u);
textureStore(out, p, gen_blend(o, vec4<f32>(c * op, op), P.u[0].x));
}
// ---------------------------------------------------------------- Noise / Add Grain