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Commit ad84681d authored by Alan Viverette's avatar Alan Viverette Committed by Dan Stoza
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
(cherry picked from commit 3acd9f1d)
parent 8de71a24

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;";