lygia/color/desaturate)Change saturation of a color
Use:
desaturate(<float|vec3|vec4> color, float amount)
#ifndef FNC_DESATURATE
#define FNC_DESATURATE
vec3 desaturate(in vec3 v, in float a ) {
return mix(v, vec3(dot(vec3(.3, .59, .11), v)), a);
}
vec4 desaturate(in vec4 v, in float a ) {
return vec4(desaturate(v.rgb, a), v.a);
}
#endif
Use:
desaturate(<float|float3|float4> color, float amount)
#ifndef FNC_DESATURATE
#define FNC_DESATURATE
float3 desaturate(in float3 color, in float amount ) {
float l = dot(float3(.3, .59, .11), color);
return lerp(color, float3(l, l, l), amount);
}
float4 desaturate(in float4 color, in float amount ) {
return float4(desaturate(color.rgb, amount), color.a);
}
#endif
Use:
desaturate(<float|float3|float4> color, float amount)
#ifndef FNC_DESATURATE
#define FNC_DESATURATE
float3 desaturate(float3 v, float a ) {
return mix(v, float3(dot(float3(.3, .59, .11), v)), a);
}
float4 desaturate(float4 v, float a ) {
return float4(desaturate(v.rgb, a), v.a);
}
#endif
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