1 files changed, 68 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl
new file mode 100644
index 0000000000..b54c580ce9
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl
@@ -0,0 +1,68 @@
+/** 
+ * @file attachmentAlphaShadowF.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
+ * $/LicenseInfo$
+ */
+
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
+
+uniform float minimum_alpha;
+uniform sampler2D diffuseMap;
+
+VARYING float pos_w;
+VARYING float target_pos_x;
+
+#if !DEPTH_CLAMP
+VARYING vec4 post_pos;
+#endif
+
+VARYING vec2 vary_texcoord0;
+VARYING vec4 vertex_color;
+
+void main() 
+{
+	float alpha = texture2D(diffuseMap, vary_texcoord0.xy).a * vertex_color.a;
+
+	if (alpha < 0.05) // treat as totally transparent
+	{
+		discard;
+	}
+
+	if (alpha < minimum_alpha)
+	{
+	  if (fract(0.5*floor(target_pos_x / pos_w )) < 0.25)
+	  {
+	    discard;
+	  }
+	}
+
+	frag_color = vec4(1,1,1,1);
+
+#if !DEPTH_CLAMP	
+	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
+#endif
+
+}