varying vec2 vUv;
uniform sampler2D blurTexture1;
uniform sampler2D blurTexture2;
uniform sampler2D blurTexture3;
uniform sampler2D blurTexture4;
uniform sampler2D blurTexture5;
uniform sampler2D dirtTexture;
uniform float bloomStrength;
uniform float bloomRadius;
uniform float bloomFactors[NUM_MIPS];
uniform vec3 bloomTintColors[NUM_MIPS];
uniform vec3 uTintColor;
uniform float uTintStrength;

float lerpBloomFactor(const in float factor) {
    float mirrorFactor = 1.2 - factor;
    return mix(factor, mirrorFactor, bloomRadius);
}

void main() {
    vec4 color = bloomStrength * ( lerpBloomFactor(bloomFactors[0]) * vec4(bloomTintColors[0], 1.0) * texture2D(blurTexture1, vUv) +
    lerpBloomFactor(bloomFactors[1]) * vec4(bloomTintColors[1], 1.0) * texture2D(blurTexture2, vUv) +
    lerpBloomFactor(bloomFactors[2]) * vec4(bloomTintColors[2], 1.0) * texture2D(blurTexture3, vUv) +
    lerpBloomFactor(bloomFactors[3]) * vec4(bloomTintColors[3], 1.0) * texture2D(blurTexture4, vUv) +
    lerpBloomFactor(bloomFactors[4]) * vec4(bloomTintColors[4], 1.0) * texture2D(blurTexture5, vUv) );

    color.rgb = mix(color.rgb, uTintColor, uTintStrength);
    gl_FragColor = color;
}