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/**
* @file postDeferredF.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* $/LicenseInfo$
*/
#version 120
#extension GL_ARB_texture_rectangle : enable
uniform sampler2DRect diffuseRect;
uniform sampler2DRect localLightMap;
uniform sampler2DRect sunLightMap;
uniform sampler2DRect giLightMap;
uniform sampler2D luminanceMap;
uniform sampler2DRect lightMap;
uniform vec3 lum_quad;
uniform float lum_lod;
uniform vec4 ambient;
uniform vec3 gi_quad;
uniform vec2 screen_res;
varying vec2 vary_fragcoord;
void main()
{
vec2 tc = vary_fragcoord.xy;
vec3 lum = texture2DLod(luminanceMap, tc/screen_res, lum_lod).rgb;
float luminance = lum.r;
luminance = luminance*lum_quad.y+lum_quad.z;
vec4 diff = texture2DRect(diffuseRect, vary_fragcoord.xy);
float ambocc = texture2DRect(lightMap, vary_fragcoord.xy).g;
vec3 gi_col = texture2DRect(giLightMap, vary_fragcoord.xy).rgb;
gi_col = gi_col*gi_col*gi_quad.x + gi_col*gi_quad.y+gi_quad.z*ambocc*ambient.rgb;
gi_col *= diff;
vec4 sun_col = texture2DRect(sunLightMap, vary_fragcoord.xy);
vec3 local_col = texture2DRect(localLightMap, vary_fragcoord.xy).rgb;
sun_col *= 1.0/min(luminance, 1.0);
gi_col *= 1.0/luminance;
vec3 col = sun_col.rgb+gi_col+local_col;
gl_FragColor.rgb = col.rgb;
col.rgb = max(col.rgb-vec3(1.0,1.0,1.0), vec3(0.0, 0.0, 0.0));
gl_FragColor.a = 0.0; // max(dot(col.rgb,col.rgb)*lum_quad.x, sun_col.a);
//gl_FragColor.rgb = vec3(lum_lod);
}
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