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CryAnimation/CryCharRenderElement.h

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+/////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//	Crytek Character Animation source code
+//	
+//	History:
+//	Created by Sergiy Migdalskiy
+//
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+#ifndef _CRY_CHAR_RENDER_ELEMENT_HDR_
+#define _CRY_CHAR_RENDER_ELEMENT_HDR_
+
+
+// buffer incarnation: the buffer with the last rendered frame
+// NOTE: this structure doesn't manage the leaf buffer; it's just a container
+// THe leaf buffer must be destructed manually through the methods of this class,
+// the destructor won't do that for you
+class CryCharRenderElement
+{
+public:
+	// creates an empty element, without the leaf buffer attached
+	CryCharRenderElement ();
+	~CryCharRenderElement ();
+
+	// returns true if the leaf buffer can be deleted immediately
+	bool canDestruct();
+
+	// detaches the leaf buffer from this object (forgets it)
+	void detach();
+
+	// deletes the current buffer, cleans up the object; can only be called when canDelete() == true
+	void destruct ();
+
+	// creates the buffer with the given number of vertices and vertex format
+	// can only be called for a clean (without initialized leaf buffer) object
+	//void create (int nVertCount, int nVertFormat, const char* szSource, unsigned numMaterials, bool bOnlyVideoBuffer = true);
+
+	// creates the buffer with the given number of vertices and vertex format
+	// can only be called for a clean (without initialized leaf buffer) object
+	// initializes the system buffer with the data from the array
+	void create (int nVertCount, const struct_VERTEX_FORMAT_P3F_COL4UB_TEX2F* pSource, const char* szSource, unsigned numMaterials, bool bOnlyVideoBuffer = true);
+
+	// recreates videobuffer
+	void recreate();
+
+	// returns the number of vertices allocated in the current buffer, if any is allocated
+	unsigned numVertices()const;
+
+	// returns the number of materials in the leaf buffer
+	unsigned numMaterials()const;
+
+	// sets the number of used materials in the leaf buffer, initializes the materials (creates ocleaves for them)
+	void resizeMaterials (unsigned numMaterials, IShader* pShader);
+	
+	CLeafBuffer* getLeafBuffer() {return m_pLeafBuffer;}
+
+	int getVertexFormat() {return m_pLeafBuffer->m_nVertexFormat;}
+
+	void update(bool bLock, bool bCopyToVideoBuffer);
+
+	void lock (bool bCopyToVideoBuffer) {update (true, bCopyToVideoBuffer);}
+	void unlock (bool bCopyToVideoBuffer) {update (false, bCopyToVideoBuffer);}
+
+	void render (CCObject* pObj);
+
+	void assignMaterial (unsigned nMaterial, IShader* pShader, int nTextureId, int nFirstIndex, int numIndices, int nFirstVertex, int numVertices);
+	void updateIndices (const unsigned short* pIndices, unsigned numIndices);
+protected:
+
+	// the leaf buffer for rendering the decals
+	CLeafBuffer* m_pLeafBuffer;
+	
+	// this is the frame at which this leaf buffer was last rendered;
+	// if it's the current frame, it cannot be deleted now.
+	int m_nLeafBufferLastRenderFrame;
+	
+	// this is the number of vertices/indices allocated in the current leaf buffer
+	// these are kept here becaue CLeafBuffer doesn't have any normal interface to retrieve them
+	unsigned m_numVertBufVertices;
+};
+
+
+#endif