compton compositor compatible code for colour correction

compton-colour.glsl

/* compton --backend glx --glx-fshader-win "$(cat ~/compton-colour.glsl)" */
uniform sampler2D tex;

/*mProtanopia*/
//static const half3 blindVisionR = float3( 0.20 ,  0.99 , -0.19 );
//static const half3 blindVisionG = float3( 0.16 ,  0.79 ,  0.04 );
//static const half3 blindVisionB = float3( 0.01 , -0.01 ,  1.00 );
/*mDeuteranopia*/
//static const half3 blindVisionR = float3( 0.43 ,  0.72 , -0.15 );
//static const half3 blindVisionG = float3( 0.34 ,  0.57 ,  0.09 );
//static const half3 blindVisionB = float3(-0.02 ,  0.03 ,  1.00 );
/*mTritanopia*/
//static const half3 blindVisionR = float3( 0.97 ,  0.11 , -0.08 );
//static const half3 blindVisionG = float3( 0.02 ,  0.82 ,  0.16 );
//static const half3 blindVisionB = float3( -0.06 ,  0.88 ,  0.18 );
/*mDogVision*/
static const half3 blindVisionR = float3( 0.32 ,  0.85 , -0.17 );
static const half3 blindVisionG = float3( 0.25 ,  0.68 ,  0.07 );
static const half3 blindVisionB = float3( -0.01 ,  0.01 ,  1.00 );


void main()
{
    vec4 fragColor = texture2D(tex, gl_TexCoord[0]);
    fragColor = vec4(dot(fragColor, blindVisionR), dot(fragColor, blindVisionG), dot(fragColor, blindVisionB), fragColor.a);
    gl_FragColor = fragColor;
}