51 lines
1.1 KiB
GLSL
51 lines
1.1 KiB
GLSL
#version 330
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uniform sampler2D qt_Texture0;
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uniform vec3 mtf_param;
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uniform bool bw;
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uniform bool invert;
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uniform bool srgb;
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uniform vec3 whiteBalance;
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in vec2 qt_TexCoord0;
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out vec4 color;
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vec3 Linear2sRGB(vec3 color)
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{
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return mix(12.92 * color.rgb,
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1.055 * pow(color, vec3(1.0 / 2.4)) - 0.055,
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greaterThan(color, vec3(0.0031308)));
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}
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vec4 MTF(vec4 x, vec3 m)
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{
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x = (x - m.x) / (m.z - m.x);
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x = clamp(x, vec4(0.0), vec4(1.0));
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return ((m.y - 1) * x) / ((2 * m.y - 1) * x - m.y);
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}
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vec3 checker()
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{
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vec2 pattern = fract(gl_FragCoord.xy * 0.0625) - 0.5;
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return vec3(step(pattern.x * pattern.y, 0.0) * 0.25 + 0.25);
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}
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void main(void)
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{
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color = texture(qt_Texture0, qt_TexCoord0);
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if(bw)color = color.rrra;
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color = MTF(color, mtf_param);
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if(invert)color.rgb = vec3(1.0) - color.rgb;
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color.rgb = mix(checker(), color.rgb, color.a);
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if(srgb)color.rgb = Linear2sRGB(color.rgb);
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color.rgb *= whiteBalance;
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if(any(lessThan(qt_TexCoord0, vec2(0.0))) || any(greaterThan(qt_TexCoord0, vec2(1.0))))
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color = vec4(0.0, 0.0, 0.0, 1.0);
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color.a = 1.0;
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}
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