From 17f46868d28876b65adcf24a45e6c19a20f2834c Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Wed, 10 Aug 2011 14:40:39 -0500
Subject: SH-2265 Fix for impostor alpha masking being broken.

---
 indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'indra/newview/app_settings/shaders/class1/deferred')

diff --git a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
index fa811f0d55..75f594ed8f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
@@ -5,6 +5,8 @@
  * $/LicenseInfo$
  */
  
+uniform float minimum_alpha;
+uniform float maximum_alpha;
 
 
 uniform sampler2D diffuseMap;
@@ -14,6 +16,12 @@ uniform sampler2D specularMap;
 void main() 
 {
 	vec4 col = texture2D(diffuseMap, gl_TexCoord[0].xy);
+
+	if (col.a < minimum_alpha || col.a > maximum_alpha)
+	{
+		discard;
+	}
+
 	gl_FragData[0] = vec4(col.rgb, col.a * 0.005);
 	gl_FragData[1] = texture2D(specularMap, gl_TexCoord[0].xy);
 	gl_FragData[2] = vec4(texture2D(normalMap, gl_TexCoord[0].xy).xyz, 0.0);
-- 
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