layout(location = 0) out vec4 outColor;
layout(location = 1) out float outDepth;

layout(location = 0) in vec2 uv;

layout(binding = 0) uniform UniformPostData {
    float exposure, gamma;
} postdata;

layout(binding = 1) uniform sampler2D texSampler;
layout(binding = 2) uniform sampler2D brightSampler;
layout(binding = 3) uniform sampler2D brightSampler2;
layout(binding = 4) uniform sampler2D brightSampler3;
layout(binding = 5) uniform sampler2D depthSampler;

void main() {
    vec3 hdrColor = texture(texSampler, uv).rgb;

    vec3 bloomColor = texture(brightSampler, uv).rgb + texture(brightSampler2, uv).rgb + texture(brightSampler3, uv).rgb;

    vec3 mapped = vec3(1.0) - exp(-hdrColor * postdata.exposure);
    mapped = pow(mapped, vec3(1.0 / postdata.gamma));
    //mapped += bloomColor; //bugged?

    outColor = vec4(mapped, 1.0);
    gl_FragDepth = texture(depthSampler, uv).r;
}