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17 lines
590 B
17 lines
590 B
1 year ago
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#if IS_OS
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float3 color_correct(float3 rgb) {
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float3 corrected = rgb.x * (float3)(1.55361989, -0.268894615, -0.000593219);
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corrected += rgb.y * (float3)(-0.421217301, 1.51883144, -0.69760146);
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corrected += rgb.z * (float3)(-0.132402589, -0.249936825, 1.69819468);
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return corrected;
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}
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float3 apply_gamma(float3 rgb, int expo_time) {
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float s = log2((float)expo_time);
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if (s < 6) {s = fmin(12.0 - s, 9.0);}
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// log function adaptive to number of bits
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return clamp(log(1 + rgb*65472.0) * (0.48*s*s - 12.92*s + 115.0) - (1.08*s*s - 29.2*s + 260.0), 0.0, 255.0) / 255.0;
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}
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#endif
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