 */
 
 // For all settings: 1.0 = 100% 0.5=50% 1.5 = 150%
-vec3 ContrastSaturationBrightness(vec3 color, float brt, float sat, float con)
+vec3 ContrastSaturationBrightness(in vec3 color, in float brt, in float sat, in float con)
 {
 	// Increase or decrease theese values to adjust r, g and b color channels seperately
 	const float AvgLumR = 0.5;

		
		rgb.r = HueToRGB(f1, f2, hsl.x + (1.0/3.0));
		rgb.g = HueToRGB(f1, f2, hsl.x);
		rgb.b= HueToRGB(f1, f2, hsl.x - (1.0/3.0));
	}
	
	return rgb;

** Hue, saturation, luminance
*/

vec3 RGBToHSL(in vec3 color)
{
	vec3 hsl; // init to 0 to avoid warnings ? (and reverse if + remove first part)
	
