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CryAnimation/VertexBufferArrayDrivers.h

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+/////////////////////////////////////////////////////////////////////////////////////////////////////
+//
+//	Crytek Character Animation source code
+//	
+//	History:
+//	10/07/2002 - Created by Sergiy Migdalskiy <sergiy@crytek.de>
+//
+//  Contains:
+//	Utility classes derived from sparse array driver that are used to index/access easily into
+//     the leaf(vertex) buffer internal structure of vertex buffer.
+//  Essentially, these are just sparse array drivers (each sparse array is just the array of positions,
+//     normals, tangents, whatever in the video memory), and these classes are just used to initialize them.
+/////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef _CRY_ANIMATION_VERTEX_BUFFER_ARRAY_DRIVERS_HDR_
+#define _CRY_ANIMATION_VERTEX_BUFFER_ARRAY_DRIVERS_HDR_
+
+#include "SparseArrayDriver.h"
+
+// position array in the video buffer.
+// the positions in the vertex buffer are kept within some structure with some stride
+// upon initialization, this array driver fetches those values from the vertex buffer structure
+// and you can address the positions as a normal array then
+class CVertexBufferPosArrayDriver: public TSparseArrayDriver<Vec3>
+{
+public:
+	// this constructor mimics parameters of GetPosPtr
+	CVertexBufferPosArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+// Tangent array in the video buffer
+class CVertexBufferTangentArrayDriver: public TSparseArrayDriver<Vec3>
+{
+public:
+	// this constructor mimics parameters of GetTangentPtr
+	CVertexBufferTangentArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+// Tangent array in the video buffer
+class CVertexBufferBinormalArrayDriver: public TSparseArrayDriver<Vec3>
+{
+public:
+	// this constructor mimics parameters of GetTangentPtr
+	CVertexBufferBinormalArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+
+// TNormal array in the video buffer
+class CVertexBufferTNormalArrayDriver: public TSparseArrayDriver<Vec3>
+{
+public:
+	// this constructor mimisc parameters of GetTNormalPtr
+	CVertexBufferTNormalArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+
+// UV array in the video buffer
+class CVertexBufferUVArrayDriver: public TSparseArrayDriver<CryUV>
+{
+public:
+	// this constructor mimisc parameters of GetUVPtr
+	CVertexBufferUVArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+// Color array in the video buffer. Each DWORD is the color in the format AABBGGRR
+class CVertexBufferColorArrayDriver: public TSparseArrayDriver<DWORD>
+{
+public:
+	// this constructor mimisc parameters of GetUVPtr
+	CVertexBufferColorArrayDriver (CLeafBuffer* pVertexBuffer, int nId=0, bool bSystemMemory=true);
+};
+
+#endif