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https://github.com/gnif/LookingGlass.git
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54 lines
994 B
GLSL
54 lines
994 B
GLSL
#version 300 es
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in highp vec2 uv;
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out highp vec4 color;
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uniform int nearest;
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uniform highp vec2 size;
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uniform int nv;
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uniform highp float nvGain;
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uniform sampler2D sampler1;
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uniform sampler2D sampler2;
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uniform sampler2D sampler3;
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void main()
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{
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highp vec4 yuv;
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if(nearest == 1)
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{
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yuv = vec4(
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texture(sampler1, uv).r,
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texture(sampler2, uv).r,
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texture(sampler3, uv).r,
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1.0
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);
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}
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else
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{
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highp ivec2 px = ivec2(uv * size);
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yuv = vec4(
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texelFetch(sampler1, px, 0).r,
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texelFetch(sampler2, px, 0).r,
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texelFetch(sampler3, px, 0).r,
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1.0
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);
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}
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highp mat4 yuv_to_rgb = mat4(
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1.0, 0.0 , 1.402, -0.701,
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1.0, -0.344, -0.714, 0.529,
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1.0, 1.772, 0.0 , -0.886,
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1.0, 1.0 , 1.0 , 1.0
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);
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color = yuv * yuv_to_rgb;
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if (nv == 1)
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{
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highp float lumi = 1.0 - (0.2126 * color.r + 0.7152 * color.g + 0.0722 * color.b);
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color *= 1.0 + lumi;
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color *= nvGain;
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}
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}
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