1 files changed, 51 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl b/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl
new file mode 100644
index 0000000000..6c0e795f6b
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+++ b/indra/newview/app_settings/shaders/class1/windlight/sunDiscV.glsl
@@ -0,0 +1,51 @@
+/** 
+ * @file class1\wl\sunDiscV.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
+ * $/LicenseInfo$
+ */
+
+uniform mat4 texture_matrix0;
+uniform mat4 modelview_matrix;
+uniform mat4 modelview_projection_matrix;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec2 texcoord0;
+
+VARYING vec2 vary_texcoord0;
+VARYING float sun_fade;
+
+void calcAtmospherics(vec3 eye_pos);
+
+void main()
+{
+    //transform vertex
+    vec3 offset = vec3(0, 0, 50);
+    vec4 vert = vec4(position.xyz - offset, 1.0);
+    vec4 pos = modelview_projection_matrix*vert;
+
+    sun_fade = smoothstep(0.3, 1.0, (position.z + 50) / 512.0f);
+    gl_Position = pos;
+    
+    calcAtmospherics(pos.xyz);
+
+    vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+}