ADHOC/replicant-frameworks_native
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Remove gamma correction from color correction shader

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Gamma correction was incorrectly skewing both color inversion and
Daltonization, which resulted in washed-out colors.

Bug: 20346301
Change-Id: I34d879f902c3be115b2d23f09c3ed3902799759e
This commit is contained in:
Alan Viverette 2015-04-28 17:15:57 -07:00
parent d9c4971da2
commit 3acd9f1d8f
1 changed files with 0 additions and 2 deletions
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2
services/surfaceflinger/RenderEngine/ProgramCache.cpp
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@ -199,10 +199,8 @@ String8 ProgramCache::generateFragmentShader(const Key& needs) {
// un-premultiply if needed before linearization // un-premultiply if needed before linearization
fs << "gl_FragColor.rgb = gl_FragColor.rgb/gl_FragColor.a;"; fs << "gl_FragColor.rgb = gl_FragColor.rgb/gl_FragColor.a;";
} }
fs << "gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(2.2));";
fs << "vec4 transformed = colorMatrix * vec4(gl_FragColor.rgb, 1);"; fs << "vec4 transformed = colorMatrix * vec4(gl_FragColor.rgb, 1);";
fs << "gl_FragColor.rgb = transformed.rgb/transformed.a;"; fs << "gl_FragColor.rgb = transformed.rgb/transformed.a;";
fs << "gl_FragColor.rgb = pow(gl_FragColor.rgb, vec3(1.0 / 2.2));";
if (!needs.isOpaque() && needs.isPremultiplied()) { if (!needs.isOpaque() && needs.isPremultiplied()) {
// and re-premultiply if needed after gamma correction // and re-premultiply if needed after gamma correction
fs << "gl_FragColor.rgb = gl_FragColor.rgb*gl_FragColor.a;"; fs << "gl_FragColor.rgb = gl_FragColor.rgb*gl_FragColor.a;";