Merging r6288 through r6336 from trunk to ogl-es branch

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6337 dfc29bdd-3216-0410-991c-e03cc46cb475

include/IBillboardSceneNode.h

@@ -12,6 +12,7 @@ namespace irr
 namespace scene
 {
 	class ICameraSceneNode;
+	class IMeshBuffer;
 
 //! A billboard scene node.
 /** A billboard is like a 3d sprite: A 2d element,
@@ -74,6 +75,17 @@ public:
 	    That is why the usual getBoundingBox will return a "safe" boundingbox which is guaranteed
 	    to contain the billboard. While this function can return the real one. */
 	virtual const core::aabbox3d<f32>& getTransformedBillboardBoundingBox(const irr::scene::ICameraSceneNode* camera) = 0;
+
+	//! Get the amount of mesh buffers.
+	/** \return Amount of mesh buffers (IMeshBuffer) in this mesh. */
+	virtual u32 getMeshBufferCount() const = 0;
+
+	//! Get pointer to a mesh buffer.
+	/** NOTE: Positions and normals of this meshbuffers are re-calculated before rendering.
+	So this is mainly useful to access/modify the uv-coordinates.
+	\param nr: Zero based index of the mesh buffer.
+	\return Pointer to the mesh buffer or 0 if there is no such	mesh buffer. */
+	virtual IMeshBuffer* getMeshBuffer(u32 nr) const = 0;
 };
 
 } // end namespace scene