biipadmin/Burn-My-Windows
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

🔧 Convert window texture alpha from premultiplied to straight

Browse Source
This commit is contained in:
Simon Schneegans
2022-05-11 04:59:58 +02:00
parent 478ba77288
commit d224d14db1
11 changed files with 83 additions and 23 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/Apparition.js
+7 -2
View File
@@ -176,7 +176,7 @@ if (utils.isInShellProcess()) {
freeShaders.push(this);
}
// This is called by the constructor. This is means it's only called when the effect
// This is called by the constructor. This means, it's only called when the effect
// is used for the first time.
vfunc_build_pipeline() {
const declarations = `
@@ -218,8 +218,13 @@ if (utils.isInShellProcess()) {
float c = cos(angle);
coords = vec2(dot(coords, vec2(c, -s)), dot(coords, vec2(s, c)));
// Fade out the window texture.
// Shell.GLSLEffect uses straight alpha. So we have to convert from premultiplied.
cogl_color_out = texture2D(uTexture, coords + center);
if (cogl_color_out.a > 0) {
cogl_color_out.rgb /= cogl_color_out.a;
}
// Fade out the window texture.
cogl_color_out.a *= 1.0 - progress;
`;