mirror of
https://github.com/ZDoom/raze-gles.git
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3c193bb243
This removes the final access to OpenGL from the rest of the source, with the exception of the glFinish call in the swap code.
27 lines
524 B
GLSL
27 lines
524 B
GLSL
// YUV->RGB conversion fragment shader adapted from
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// http://www.fourcc.org/fccyvrgb.php: Want some sample code?
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// direct link: http://www.fourcc.org/source/YUV420P-OpenGL-GLSLang.c
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#version 120
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uniform sampler2D tex;
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void main(void) {
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float r,g,b,y,u,v;
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vec3 yuv;
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yuv = texture2D(tex, gl_TexCoord[0].st).rgb;
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y = yuv.r;
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u = yuv.g;
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v = yuv.b;
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y = 1.1643*(y-0.0625);
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u = u-0.5;
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v = v-0.5;
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r = y + 1.5958*v;
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g = y - 0.39173*u - 0.81290*v;
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b = y + 2.017*u;
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gl_FragColor = vec4(r,g,b,1.0);
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};
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