precision mediump float;

​

uniform sampler2D depth;

uniform sampler2D shadow;

uniform sampler2D shadowBlurred;

​

in vec2 pos;

out vec4 colour;

​

// Noise algo from:

// https://www.shadertoy.com/view/4dS3Wd

​

void main() {

  float d = texture(depth, pos).r;

  vec4 sNormal = texture(shadow, pos);

  vec4 sBlur = texture(shadowBlurred, pos);

  colour = mix(sNormal, sBlur, d);  

}