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+/**
+ * @file class2\wl\atmosphericsHelpersV.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
+ * $/LicenseInfo$
+ */
+
+// Output variables
+
+uniform float scene_light_strength;
+uniform int no_atmo;
+
+vec3 atmosFragAmbient(vec3 light, vec3 amblit)
+{
+ if (no_atmo == 1) return light;
+ return amblit + light / 2.0;
+}
+
+vec3 atmosFragAffectDirectionalLight(float lightIntensity, vec3 sunlit)
+{
+ return sunlit * lightIntensity;
+}
+
+vec3 scaleDownLightFrag(vec3 light)
+{
+ return (light / scene_light_strength );
+}
+