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Commit 3acd9f1d authored by Alan Viverette's avatar Alan Viverette
Browse files

Remove gamma correction from color correction shader 

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

Bug: 20346301
Change-Id: I34d879f902c3be115b2d23f09c3ed3902799759e
parent d9c4971d

services/surfaceflinger/RenderEngine/ProgramCache.cpp

+0 −2
Original line number Diff line number Diff line
@@ -199,10 +199,8 @@ String8 ProgramCache::generateFragmentShader(const Key& needs) { 
            // un-premultiply if needed before linearization

            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 << "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()) {

            // and re-premultiply if needed after gamma correction

            fs << "gl_FragColor.rgb = gl_FragColor.rgb*gl_FragColor.a;";