#version 330 core

uniform sampler2DRect colorSampler;
uniform sampler2DRect blurSampler0;
uniform sampler2DRect blurSampler1;
uniform sampler2DRect blurSampler2;
uniform sampler2DRect blurSampler3;

uniform int width;
uniform int height;

layout(location = 0)out vec3 minMaxMean;
layout(location = 1)out vec4 outColor;

void main(void) {
    ivec2 ipos = ivec2(gl_FragCoord.xy);
    vec3 color = texelFetch(colorSampler, ipos).xyz;
    color += texelFetch(blurSampler0, ipos).xyz;
    vec2 pos = vec2(gl_FragCoord.x/width, gl_FragCoord.y/height);
    color += texture(blurSampler1, pos).xyz;
    color += texture(blurSampler2, pos).xyz;
    color += texture(blurSampler3, pos).xyz;
    outColor = vec4(color, 1.0);
    minMaxMean = vec3(0.2126*color.r + 0.7152*color.g + 0.0722*color.b);
}