#version 330 core

in vec2 texCoords;

out vec4 FragColor;

uniform sampler2D frag;
uniform sampler2D bright;
uniform bool hdr;
uniform bool bloom;
uniform float exposure;
uniform float gamma;

void main(){
	vec4 hdrColor=texture(frag,texCoords);
	vec4 brightColor=texture(bright,texCoords);
	vec2 texel=1.0/textureSize(bright,0);

	if(bloom)
		hdrColor+=brightColor;

	if(hdr){
		//Reinhardt
		//c.rgb=c.rgb/(c.rgb+vec3(1.));

		//Exp
		hdrColor.rgb=vec3(1.)-exp(-hdrColor.rgb*exposure);
	}

	hdrColor.rgb=pow(hdrColor.rgb,vec3(1/gamma));
	FragColor=hdrColor;
}