42 lines
1.0 KiB
GLSL
42 lines
1.0 KiB
GLSL
#version 330 core
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out vec4 FragColor;
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in vec2 TexCoords;
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uniform sampler2D screenTexture;
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uniform float brightness = 0.0f;
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uniform float colorContrast = 0.0f;
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uniform float saturation = 1.0f;
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uniform float exposure = 1.0f;
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vec3 ACESFilm(vec3 x)
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{
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const float a = 2.51;
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const float b = 0.03;
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const float c = 2.43;
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const float d = 0.59;
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const float e = 0.14;
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return clamp((x * (a * x + b)) / (x * (c * x + d) + e), 0.0, 1.0);
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}
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void main()
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{
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vec3 originalcolor = texture(screenTexture, TexCoords).rgb;
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vec3 finalcolor = ACESFilm(originalcolor * exposure);
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const float gamma = 2.2;
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finalcolor = pow(finalcolor, vec3(1.0 / gamma));
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vec3 contrast = vec3(1.0f) - finalcolor;
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finalcolor = mix(finalcolor,vec3(1.0f) - finalcolor,colorContrast);
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float average = (finalcolor[0]+finalcolor[1]+finalcolor[2])/3.0f;
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for (int i = 0; i < 3; i++) {
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finalcolor[i] = average + saturation * (finalcolor[i] - average);
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}
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FragColor = vec4(finalcolor,1.0f);
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}
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