oneandonlyoddo/luminance of a pixel

## luminance of a pixel
/*
"The colors are not evenly interpreted by our eyes."
source: https://cs.stackexchange.com/questions/11876/how-do-i-compute-the-luminance-of-a-pixel
*/

float luminance(float r, float g, float b){
  return (r * 0.3) + (g * 0.59) + (b * 0.11);
}
	/*
	"The colors are not evenly interpreted by our eyes."
	source: https://cs.stackexchange.com/questions/11876/how-do-i-compute-the-luminance-of-a-pixel
	*/

	float luminance(float r, float g, float b){
	return (r * 0.3) + (g * 0.59) + (b * 0.11);
	}