lygia/color/space/gamma2linear)convert from gamma to linear color space.
Use:
gamma2linear(<float|vec3|vec4> color)
#if !defined(GAMMA) && !defined(TARGET_MOBILE) && !defined(PLATFORM_RPI) && !defined(PLATFORM_WEBGL)
#define GAMMA 2.2
#endif
#ifndef FNC_GAMMA2LINEAR
#define FNC_GAMMA2LINEAR
float gamma2linear(const in float v) {
#ifdef GAMMA
return pow(v, GAMMA);
#else
// assume gamma 2.0
return v * v;
#endif
}
vec3 gamma2linear(const in vec3 v) {
#ifdef GAMMA
return pow(v, vec3(GAMMA));
#else
// assume gamma 2.0
return v * v;
#endif
}
vec4 gamma2linear(const in vec4 v) {
return vec4(gamma2linear(v.rgb), v.a);
}
#endif
Use:
gamma2linear(<float|float3|float4> color)
#if !defined(GAMMA) && !defined(TARGET_MOBILE) && !defined(PLATFORM_RPI) && !defined(PLATFORM_WEBGL)
#define GAMMA 2.2
#endif
#ifndef FNC_GAMMA2LINEAR
#define FNC_GAMMA2LINEAR
float gamma2linear(in float v) {
#ifdef GAMMA
return pow(v, GAMMA);
#else
// assume gamma 2.0
return v * v;
#endif
}
float3 gamma2linear(in float3 v) {
#ifdef GAMMA
return pow(v, float3(GAMMA, GAMMA, GAMMA));
#else
// assume gamma 2.0
return v * v;
#endif
}
float4 gamma2linear(in float4 v) {
return float4(gamma2linear(v.rgb), v.a);
}
#endif
fn gamma2linear(gamma: vec3f) -> vec3f {
return pow(gamma, vec3(2.2));
}
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