From ce011d7e446e8f05247fc4ed7e0af5a94afbb074 Mon Sep 17 00:00:00 2001
From: Mic Bowman
Date: Tue, 23 Aug 2011 10:52:12 -0700
Subject: Protect a check for default texture entry when setting alpha values.
 Apparently if all faces have their own textures then the default texture is
 null

---
 .../ScriptEngine/Shared/Api/Implementation/LSL_Api.cs       | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'OpenSim/Region/ScriptEngine/Shared/Api/Implementation')

diff --git a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
index ef67a0c..24be7d4 100644
--- a/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
+++ b/OpenSim/Region/ScriptEngine/Shared/Api/Implementation/LSL_Api.cs
@@ -1619,9 +1619,16 @@ namespace OpenSim.Region.ScriptEngine.Shared.Api
                         tex.FaceTextures[i].RGBA = texcolor;
                     }
                 }
-                texcolor = tex.DefaultTexture.RGBA;
-                texcolor.A = Util.Clip((float)alpha, 0.0f, 1.0f);
-                tex.DefaultTexture.RGBA = texcolor;
+
+                // In some cases, the default texture can be null, eg when every face
+                // has a unique texture
+                if (tex.DefaultTexture != null)
+                {
+                    texcolor = tex.DefaultTexture.RGBA;
+                    texcolor.A = Util.Clip((float)alpha, 0.0f, 1.0f);
+                    tex.DefaultTexture.RGBA = texcolor;
+                }
+                
                 part.UpdateTexture(tex);
                 return;
             }
-- 
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