Removed maximum_alpha uniform (as it's always 1.0 anyhow)

indra/newview/app_settings/shaders/class1/objects/impostorF.glsl

@@ -6,7 +6,6 @@
  */
  
 uniform float minimum_alpha;
-uniform float maximum_alpha;
 
 vec3 fullbrightAtmosTransport(vec3 light);
 vec3 fullbrightScaleSoftClip(vec3 light);
@@ -17,7 +16,7 @@ void main()
 {
 	vec4 color = texture2D(diffuseMap,gl_TexCoord[0].xy) * gl_Color;
 	
-	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	if (color.a < minimum_alpha)
 	{
 		discard;
 	}