ADHOC/replicant-frameworks_native
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Simplify handling of opaque layers in shader generation

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just ensure the alpha value is 1.0 in the opaque case
when reading the color from the texture or the
global color.

Bug: 8679321

Change-Id: Ia38b30e97c3bce5a2d534a40c0d66e0bfc3ea40d
This commit is contained in:
Mathias Agopian 2013-08-14 16:33:27 -07:00
parent 6db4ff6218
commit 2eaefe198a
1 changed files with 5 additions and 17 deletions
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18
services/surfaceflinger/RenderEngine/ProgramCache.cpp
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@ -140,30 +140,18 @@ String8 ProgramCache::generateFragmentShader(const Key& needs) {
} else {
fs << "gl_FragColor = color;";
}
if (needs.isOpaque()) {
fs << "gl_FragColor.a = 1.0;";
}
if (needs.hasPlaneAlpha()) {
// modulate the alpha value with planeAlpha
if (needs.isPremultiplied()) {
// ... and the color too if we're premultiplied
if (needs.isOpaque()) {
// ... we're opaque, only premultiply the color component
fs << "gl_FragColor.rgb *= alphaPlane;"
<< "gl_FragColor.a = alphaPlane;";
} else {
fs << "gl_FragColor *= alphaPlane;";
}
} else {
// not premultiplied
if (needs.isOpaque()) {
fs << "gl_FragColor.a = alphaPlane;";
} else {
fs << "gl_FragColor.a *= alphaPlane;";
}
}
} else {
if (needs.isOpaque()) {
fs << "gl_FragColor.a = 1.0;";
}
}
fs << dedent << "}";
return fs.getString();
}