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/**
* @file waterFogF.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2007, 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
* $/LicenseInfo$
*/
vec4 applyWaterFog(vec4 color)
{
// GL_EXP2 Fog
//float fog = exp(-gl_Fog.density * gl_Fog.density * gl_FogFragCoord * gl_FogFragCoord);
// GL_EXP Fog
// float fog = exp(-gl_Fog.density * gl_FogFragCoord);
// GL_LINEAR Fog
float fog = (gl_Fog.end - gl_FogFragCoord) * gl_Fog.scale;
fog = clamp(fog, 0.0, 1.0);
color.rgb = mix(gl_Fog.color.rgb, color.rgb, fog);
return color;
}
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