29 lines
804 B
Text
29 lines
804 B
Text
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/*
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* ACES tone mapping
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* From 'Baking Lab' by MJP and David Neubelt
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* Original by Stephen Hill
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* https://github.com/TheRealMJP/BakingLab/blob/master/BakingLab/ACES.hlsl
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* Licensed under the MIT license
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*/
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#version 330 core
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// sRGB => XYZ => D65_2_D60 => AP1 => RRT_SAT
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const mat3 ACESInputMat = mat3(
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0.59719, 0.07600, 0.02840,
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0.35458, 0.90834, 0.13383,
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0.04823, 0.01566, 0.83777);
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// ODT_SAT => XYZ => D60_2_D65 => sRGB
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const mat3 ACESOutputMat = mat3(
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1.60475, -0.10208, -0.00327,
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-0.53108, 1.10813, -0.07276,
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-0.07367, -0.00605, 1.07602);
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vec3 aces_fitted(vec3 color)
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{
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vec3 v = ACESInputMat * color;
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vec3 a = v * (v + 0.0245786) - 0.000090537;
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vec3 b = v * (0.983729 * v + 0.4329510) + 0.238081;
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return clamp(ACESOutputMat * (a / b), 0.0, 1.0);
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}
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