#version 430 core
out vec4 FragColor;
  
in vec2 texCoord;

uniform sampler2D scene;
uniform sampler2D bloomBlur;
uniform float exposition;

void main()
{             
    //const float gamma = 2.2;
    vec3 hdrColor = texture(scene, texCoord).rgb;      
    vec3 bloomColor = texture(bloomBlur, texCoord).rgb;
    hdrColor += bloomColor; // additive blending
    // tone mapping
    //vec3 result = vec3(1.0) - exp(-hdrColor * exposition);
    // also gamma correct while we're at it       
    //result = pow(result, vec3(1.0 / gamma));
    FragColor = vec4(hdrColor, 1.0);
}