#version 330 core

in vert_t {
	vec2 tex_coords;
} vert;

out vec4 frag_color;

uniform sampler2D colorbuffer;

void main(void)
{
	const float gamma = 2.2;
	vec3 color = vec3(texture(colorbuffer, vert.tex_coords));
	color /= color + vec3(1.0);
	color = pow(color, vec3(1.0 / gamma));
	frag_color = vec4(color, 1.0);
}