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#version 330 core
in VSOUT {
vec2 texc;
} vsout;
out vec4 fcolor;
uniform sampler2D hdrbuf;
uniform float exposure;
void main(void)
{
const float gamma = 2.2;
vec3 hdrcolor, mapped;
hdrcolor = vec3(texture(hdrbuf, vsout.texc));
/* NOTE(pryazha): Reinhard tone mapping */
/* mapped = hdrcolor/(hdrcolor+vec3(1.0)); */
/* NOTE(pryazha): Tone mapping with exposure (i guess) */
mapped = vec3(1.0)-exp(-hdrcolor*exposure);
mapped = pow(mapped, vec3(1.0/gamma));
fcolor = vec4(mapped, 1.0);
}
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