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libkwineffects: add support for scRGB

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Xaver Hugl 2023-10-23 21:37:27 +02:00 committed by Aleix Pol Gonzalez
parent 6bad553f05
commit 190f688c97
2 changed files with 6 additions and 0 deletions
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1
src/libkwineffects/colorspace.h
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@ -71,6 +71,7 @@ enum class NamedTransferFunction {
sRGB = 0,
linear = 1,
PerceptualQuantizer = 2,
scRGB = 3,
};
/**

5
src/libkwineffects/glshadermanager.cpp
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@ -152,6 +152,7 @@ QByteArray ShaderManager::generateFragmentSource(ShaderTraits traits) const
stream << "const int sRGB_EOTF = 0;\n";
stream << "const int linear_EOTF = 1;\n";
stream << "const int PQ_EOTF = 2;\n";
stream << "const int scRGB_EOTF = 3;\n";
stream << "\n";
stream << "uniform mat3 colorimetryTransform;\n";
stream << "uniform int sourceNamedTransferFunction;\n";
@ -210,6 +211,8 @@ QByteArray ShaderManager::generateFragmentSource(ShaderTraits traits) const
stream << " result.rgb /= max(result.a, 0.001);\n";
stream << " result.rgb = sdrBrightness * srgbToLinear(result.rgb);\n";
stream << " result.rgb *= result.a;\n";
stream << " } else if (sourceNamedTransferFunction == scRGB_EOTF) {\n";
stream << " result.rgb *= 80;\n";
stream << " }\n";
stream << " result.rgb = doTonemapping(colorimetryTransform * result.rgb, maxHdrBrightness);\n";
}
@ -229,6 +232,8 @@ QByteArray ShaderManager::generateFragmentSource(ShaderTraits traits) const
stream << " result.rgb *= result.a;\n";
stream << " } else if (destinationNamedTransferFunction == PQ_EOTF) {\n";
stream << " result.rgb = nitsToPq(result.rgb);\n";
stream << " } else if (destinationNamedTransferFunction == scRGB_EOTF) {\n";
stream << " result.rgb /= 80.0;\n";
stream << " }\n";
}