irr: Add first patch, changelog

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@13002 178a84e3-b1eb-0310-8ba1-8eac791a3b58

lib/irrlicht/changes.stk

@@ -0,0 +1,3 @@
+The following changes have been made:
+- config changes in IrrCompileConfig.h
+- primary sort by material type

lib/irrlicht/source/Irrlicht/CSceneManager.h

@@ -532,20 +532,27 @@ namespace scene
 		struct DefaultNodeEntry
 		{
 			DefaultNodeEntry(ISceneNode* n) :
-				Node(n), TextureValue(0)
+				Node(n), TextureValue(0), MaterialType(video::EMT_SOLID)
 			{
 				if (n->getMaterialCount())
+				{
 					TextureValue = (n->getMaterial(0).getTexture(0));
+					MaterialType = n->getMaterial(0).MaterialType;
+				}
 			}
 
 			bool operator < (const DefaultNodeEntry& other) const
 			{
-				return (TextureValue < other.TextureValue);
+				if (MaterialType == other.MaterialType)
+					return (TextureValue < other.TextureValue);
+				else
+					return (MaterialType < other.MaterialType);
 			}
 
 			ISceneNode* Node;
 			private:
 			void* TextureValue;
+			video::E_MATERIAL_TYPE MaterialType;
 		};
 
 		//! sort on distance (center) to camera