luboslenco
45 lines
1.0 KiB
GLSL
45 lines
1.0 KiB
GLSL
#version 450
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#define _CToneFilmic
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#define _CVignette
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#define _CGrainStatic
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// #define _AutoExposure
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#include "../std/tonemap.glsl"
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uniform sampler2D tex;
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#ifdef _AutoExposure
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uniform sampler2D histogram;
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#endif
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#ifdef _CVignette
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uniform float vignetteStrength;
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#endif
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in vec2 texCoord;
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out vec4 fragColor;
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void main() {
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fragColor = textureLod(tex, texCoord, 0.0);
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#ifdef _CGrainStatic
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float x = (texCoord.x + 4.0) * (texCoord.y + 4.0) * 10.0;
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fragColor.rgb += vec3(mod((mod(x, 13.0) + 1.0) * (mod(x, 123.0) + 1.0), 0.01) - 0.005) * 0.09;
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#endif
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#ifdef _CVignette
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fragColor.rgb *= (1.0 - vignetteStrength) + vignetteStrength * pow(16.0 * texCoord.x * texCoord.y * (1.0 - texCoord.x) * (1.0 - texCoord.y), 0.2);
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#endif
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#ifdef _AutoExposure
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const float autoExposureStrength = 1.0;
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float expo = 2.0 - clamp(length(textureLod(histogram, vec2(0.5, 0.5), 0).rgb), 0.0, 1.0);
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fragColor.rgb *= pow(expo, autoExposureStrength * 2.0);
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#endif
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#ifdef _CToneFilmic
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fragColor.rgb = tonemapFilmic(fragColor.rgb); // With gamma
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#endif
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}
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