/usr/share/sludge/yuv.frag is in sludge-engine 2.2.1-2+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | uniform sampler2D Ytex;
uniform sampler2D Utex;
uniform sampler2D Vtex;
varying vec2 varCoord;
void main()
{
float y, u, v, r, g, b;
y=texture2D(Ytex, varCoord).a;
u=texture2D(Utex, varCoord).a;
v=texture2D(Vtex, varCoord).a;
y=1.1643*(y-0.0625);
u=u-0.5;
v=v-0.5;
r=y+1.5958*v;
g=y-0.39173*u-0.81290*v;
b=y+2.017*u;
gl_FragColor=vec4(r,g,b,1.0);
}
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