pbr/2.1.1.ibl_irradiance_conversion/background.frag


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#version 330 core

in vert_t {
	vec3 position;
} vert;

out vec4 frag_color;

uniform samplerCube cubemap;

void main(void)
{
	vec3 color = texture(cubemap, vert.position).rgb;
	color /= color + vec3(1.0);
	color = pow(color, vec3(1.0 / 2.2));
	frag_color = vec4(color, 1.0);
}