2019-08-04 19:54:08 +00:00
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//https://gamedev.stackexchange.com/questions/92015/optimized-linear-to-srgb-glsl
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vec3 srgb_to_linear(vec3 srgb) {
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bvec3 cutoff = lessThan(srgb, vec3(0.04045));
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vec3 higher = pow((srgb + vec3(0.055))/vec3(1.055), vec3(2.4));
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vec3 lower = srgb/vec3(12.92);
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return mix(higher, lower, cutoff);
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2020-07-06 21:41:21 +00:00
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}
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vec3 linear_to_srgb(vec3 linear) {
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bvec3 cutoff = lessThan(linear, vec3(0.0031308));
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vec3 higher = vec3(1.055) * pow(linear, vec3(1.0 / 2.4)) - vec3(0.055);
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vec3 lower = linear * vec3(12.92);
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return mix(higher, lower, cutoff);
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}
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