+++ /dev/null
-// Expand sRGB gamma curve.
-
-#if 0
-
-// if we have the lut
-uniform sampler1D PREFIX(srgb_tex);
-
-vec4 FUNCNAME(vec2 tc) {
- vec4 x = LAST_INPUT(tc);
-
- x.r = texture1D(PREFIX(srgb_tex), x.r).x;
- x.g = texture1D(PREFIX(srgb_tex), x.g).x;
- x.b = texture1D(PREFIX(srgb_tex), x.b).x;
-
- return x;
-}
-
-#else
-
-// use arithmetic (slow)
-vec4 FUNCNAME(vec2 tc) {
- vec4 x = LAST_INPUT(tc);
-
- vec3 a = x.rgb * vec3(1.0/12.92);
- vec3 b = pow((x.rgb + vec3(0.055)) * vec3(1.0/1.055), vec3(2.4));
- vec3 f = vec3(greaterThan(x.rgb, vec3(0.04045)));
-
- return vec4(mix(a, b, f), x.a);
-}
-
-#endif