hamid814

from math import pow

def x(v):
    v /= 255
    
    res = v / 12.92 if v <= 0.03928 else pow( (v + 0.055) / 1.055, 2.4 )

    return res

def luminance(r, g, b):

hamid814

uniform sampler2D tDiffuse;
		varying vec2 vUv;

    float map(float value, float min1, float max1, float min2, float max2) {
      return min2 + (value - min1) * (max2 - min2) / (max1 - min1);
    }
    
		void main() {
      vec2 doubleUv = vUv * 2.0;