From 41ab5979fa37e033c86a921b40b4bdf8d7699c42 Mon Sep 17 00:00:00 2001
From: auria <auria@178a84e3-b1eb-0310-8ba1-8eac791a3b58>
Date: Mon, 26 Dec 2011 21:17:36 +0000
Subject: [PATCH] Support alpha-blended sphere mapping

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@10496 178a84e3-b1eb-0310-8ba1-8eac791a3b58
---
 src/graphics/material.cpp | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/graphics/material.cpp b/src/graphics/material.cpp
index 813f9acc3..74ab06887 100644
--- a/src/graphics/material.cpp
+++ b/src/graphics/material.cpp
@@ -660,7 +660,17 @@ void  Material::setMaterialProperties(video::SMaterial *m)
     if (m_sphere_map) 
     {
         m->MaterialType = video::EMT_SPHERE_MAP;
-        modes++;
+        
+        // sphere map + alpha blending is a supported combination so in
+        // this case don't increase mode count
+        if (m_alpha_blending)
+        {
+            m->BlendOperation = video::EBO_ADD;
+        }
+        else
+        {
+            modes++;
+        }
     }
 #if !LIGHTMAP_VISUALISATION
     if (m_lightmap)