Lucas de Vries
34 lines
696 B
Plaintext
34 lines
696 B
Plaintext
|
|
uniform float value;
|
|
uniform float minSat;
|
|
uniform float maxSat;
|
|
varying vec2 uv;
|
|
|
|
void main() {
|
|
float chroma = (1.0 - uv.y) * value * (maxSat - minSat) + minSat;
|
|
float X = chroma * (1.0 - (abs(mod(uv.x * 6.0, 2.0) - 1.0)));
|
|
float m = value - chroma;
|
|
|
|
chroma += m;
|
|
X += m;
|
|
|
|
vec3 rgb = vec3(chroma);
|
|
vec2 lower = vec2(X, m);
|
|
|
|
float segment = floor(uv.x * 6.0);
|
|
if(segment == 0.0)
|
|
rgb.gb = lower;
|
|
else if(segment == 1.0)
|
|
rgb.rb = lower;
|
|
else if(segment == 2.0)
|
|
rgb.br = lower;
|
|
else if(segment == 3.0)
|
|
rgb.gr = lower;
|
|
else if(segment == 4.0)
|
|
rgb.rg = lower;
|
|
else// if(segment == 5.0)
|
|
rgb.bg = lower;
|
|
|
|
gl_FragColor = vec4(rgb, 1.0);
|
|
}
|