- Implemented methods for determining amount of scene that has streamed in. (KRScene::getStreamLevel, KRNode::getStreamLevel, KRModel::getStreamLevel, KRMaterial::getStreamLevel, and KRTexture::getStreamLevel

- Implemented connection between LOD groups and texture streaming, which delays the switch to a new LOD group until the required textures have completed streaming in.
- Corrected bug in KRMaterial that resulted in reflection cube texture names being formatted incorrectly in the mtl file
- Scene graph now requires that lod_group nodes only be contained within lod_set nodes.
- Scene graph  group nodes that do not have a LOD minimum or maximum distance are now stored as "node" rather than as "lod_group" nodes.
- IMPORTANT!  Scenes exported with this version will not be backwards compatible with earlier versions due to the requirement of lod_set nodes.

--HG--
branch : nfb
extra : rebase_source : 1ff640b85338a794841ebbb2bf0087306ff59143

KREngine/kraken/KRModel.h

@@ -69,6 +69,8 @@ public:
     void setLightMap(const std::string &name);
     std::string getLightMap();
     
+    virtual kraken_stream_level getStreamLevel(bool prime = true);
+    
 private:
     std::vector<KRMesh *> m_models;
     unordered_map<KRMesh *, std::vector<KRBone *> > m_bones; // Outer std::map connects model to set of bones