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/**
* @file atmosphericsHelpersF.glsl
*
* $LicenseInfo:firstyear=2005&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2005, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
uniform vec4 sunlight_color;
uniform vec4 light_ambient;
vec3 atmosAmbient(vec3 light)
{
return light + light_ambient.rgb;
}
vec3 atmosAffectDirectionalLight(float lightIntensity)
{
return sunlight_color.rgb * lightIntensity;
}
vec3 atmosGetDiffuseSunlightColor()
{
return sunlight_color.rgb;
}
vec3 scaleDownLight(vec3 light)
{
/* stub function for fallback compatibility on class1 hardware */
return light;
}
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