lygia/v1.1.6/color/luma)get the luminosity of a color. From https://github.com/hughsk/glsl-luma/blob/master/index.glsl
Dependencies:
Use:
luma(<vec3|vec4> color)
#ifndef FNC_LUMA
#define FNC_LUMA
float luma(float v) { return v; }
float luma(in vec3 v) { return rgb2luma(v); }
float luma(in vec4 v) { return rgb2luma(v.rgb); }
#endif
Dependencies:
Use:
luma(<float3|float4> color)
#ifndef FNC_LUMA
#define FNC_LUMA
float luma(in float color) {
return float(color);
}
float luma(in float3 color) {
return rgb2luma(color);
}
float luma(in float4 color) {
return rgb2luma(color.rgb);
}
#endif
Dependencies:
fn luma(color: vec3<f32>) -> f32 {
return rgb2luma(color);
}
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