lygia/v1.2.0/color/space/xyz2xyY)Converts from XYZ to xyY space (Y is the luminance)
Use:
<vec3|vec4> xyz2rgb(<vec3|vec4> color)
#ifndef FNC_XYZ2XYY
#define FNC_XYZ2XYY
vec3 xyz2xyY(const in vec3 xyz) {
float Y = xyz.y;
float f = 1.0 / (xyz.x + xyz.y + xyz.z);
float x = xyz.x * f;
float y = xyz.y * f;
return vec3(x, y, Y);
}
vec4 xyz2xyY(const in vec4 xyz) { return vec4(xyz2xyY(xyz.xyz), xyz.w);}
#endif
Use:
<float3|float4> xyz2rgb(<float3|float4> color)
#ifndef FNC_XYZ2XYY
#define FNC_XYZ2XYY
float3 xyz2xyY(float3 xyz) {
float Y = xyz.y;
float f = 1.0 / (xyz.x + xyz.y + xyz.z);
float x = xyz.x * f;
float y = xyz.y * f;
return float3(x, y, Y);
}
float4 xyz2xyY(float4 xyz) { return float4(xyz2xyY(xyz.xyz), xyz.w);}
#endif
fn xyz2xyY(xyz: vec3f) -> vec3f {
let Y = xyz.y;
let f = 1.0 / (xyz.x + xyz.y + xyz.z);
let x = xyz.x * f;
let y = xyz.y * f;
return vec3f(x, y, Y);
}
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