Add new shaders for generating shadows from clouds.

Add new class3 shadow shaders for VSM shadows.

Add disabled shadow pass in WLSky for using above.

1 files changed, 61 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class1/windlight/cloudShadowV.glsl b/indra/newview/app_settings/shaders/class1/windlight/cloudShadowV.glsl
new file mode 100644
index 0000000000..52164e7b80
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/windlight/cloudShadowV.glsl
@@ -0,0 +1,61 @@
+/** 
+ * @file cloudShadowV.glsl
+ *
+ * $LicenseInfo:firstyear=2011&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2011, 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_projection_matrix;
+uniform float shadow_target_width;
+
+ATTRIBUTE vec3 position;
+ATTRIBUTE vec4 diffuse_color;
+ATTRIBUTE vec2 texcoord0;
+
+#if !DEPTH_CLAMP
+VARYING float pos_zd2;
+#endif
+
+VARYING vec4 pos;
+VARYING float target_pos_x;
+VARYING vec2 vary_texcoord0;
+
+void passTextureIndex();
+
+void main()
+{
+	//transform vertex
+	vec4 pre_pos = vec4(position.xyz, 1.0);
+	pos = modelview_projection_matrix * pre_pos;
+	target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
+
+#if !DEPTH_CLAMP
+	pos_zd2 = pos.z * 0.5;
+	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
+#else
+	gl_Position = pos;
+#endif
+	
+	passTextureIndex();
+
+	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
+}