25 lines
556 B
GLSL
25 lines
556 B
GLSL
#version 140
|
|
uniform sampler2D sampler;
|
|
uniform vec4 modulation;
|
|
uniform float saturation;
|
|
|
|
in vec2 varyingTexCoords;
|
|
|
|
out vec4 fragColor;
|
|
|
|
void main()
|
|
{
|
|
vec4 tex = texture(sampler, varyingTexCoords);
|
|
|
|
if (saturation != 1.0) {
|
|
vec3 desaturated = tex.rgb * vec3( 0.30, 0.59, 0.11 );
|
|
desaturated = vec3( dot( desaturated, tex.rgb ));
|
|
tex.rgb = tex.rgb * vec3( saturation ) + desaturated * vec3( 1.0 - saturation );
|
|
}
|
|
|
|
tex.rgb = vec3(1.0) - tex.rgb;
|
|
tex *= modulation;
|
|
tex.rgb *= tex.a;
|
|
|
|
fragColor = tex;
|
|
}
|