/indra/newview/app_settings/shaders/class2/windlight/atmosphericsF.glsl

 1/** 
 2 * @file atmosphericsF.glsl
 3 *
 4 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 5 * Second Life Viewer Source Code
 6 * Copyright (C) 2007, Linden Research, Inc.
 7 * 
 8 * This library is free software; you can redistribute it and/or
 9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation;
11 * version 2.1 of the License only.
12 * 
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16 * Lesser General Public License for more details.
17 * 
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
21 * 
22 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
23 * $/LicenseInfo$
24 */
25 
26
27
28//////////////////////////////////////////////////////////
29// The fragment shader for the terrain atmospherics
30//////////////////////////////////////////////////////////
31
32vec3 getAdditiveColor();
33vec3 getAtmosAttenuation();
34
35uniform sampler2D cloudMap;
36uniform vec4 cloud_pos_density1;
37
38vec3 atmosLighting(vec3 light)
39{
40	light *= getAtmosAttenuation().r;
41	light += getAdditiveColor();
42	return (2.0 * light);
43}
44