Terrain: destroy no longer used materials

components/terrain/chunk.cpp

@@ -3,6 +3,10 @@
 #include <OgreSceneNode.h>
 #include <OgreHardwareBufferManager.h>
 #include <OgreRenderQueue.h>
+#include <OgreMaterialManager.h>
+
+#include <extern/shiny/Main/Factory.hpp>
+
 
 #include "world.hpp" // FIXME: for LoadResponseData, move to backgroundloader.hpp
 
@@ -63,6 +67,11 @@ namespace Terrain
 
     Chunk::~Chunk()
     {
+#if TERRAIN_USE_SHADER
+        sh::Factory::getInstance().destroyMaterialInstance(mMaterial->getName());
+#endif
+        Ogre::MaterialManager::getSingleton().remove(mMaterial->getName());
+
         OGRE_DELETE mVertexData;
         OGRE_DELETE mIndexData;
     }

components/terrain/chunk.hpp

@@ -20,6 +20,7 @@ namespace Terrain
 
         virtual ~Chunk();
 
+        /// @note Takes ownership of \a material
         void setMaterial (const Ogre::MaterialPtr& material);
 
         void setIndexBuffer(Ogre::HardwareIndexBufferSharedPtr buffer);