Home

nevrax.com

Nevrax.org News Mailing-list Documentation CVS Bugs License

Documentation                       Search   landscapevb_allocator.h Go to the documentation of this file. /* Copyright, 2001 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * NEVRAX NEL is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * You should have received a copy of the GNU General Public License * along with NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #ifndef NL_LANDSCAPEVB_ALLOCATOR_H #define NL_LANDSCAPEVB_ALLOCATOR_H #include "nel/misc/types_nl.h" #include "nel/misc/smart_ptr.h" #include "3d/tessellation.h" #include "3d/vertex_buffer.h" namespace NL3D { class IDriver; // *************************************************************************** // Landscape VertexProgram: Position of vertices in VertexBuffer. #define NL3D_LANDSCAPE_VPPOS_STARTPOS (CVertexBuffer::Position) #define NL3D_LANDSCAPE_VPPOS_TEX0 (CVertexBuffer::TexCoord0) #define NL3D_LANDSCAPE_VPPOS_TEX1 (CVertexBuffer::TexCoord1) #define NL3D_LANDSCAPE_VPPOS_TEX2 (CVertexBuffer::TexCoord5) #define NL3D_LANDSCAPE_VPPOS_GEOMINFO (CVertexBuffer::TexCoord2) #define NL3D_LANDSCAPE_VPPOS_DELTAPOS (CVertexBuffer::TexCoord3) #define NL3D_LANDSCAPE_VPPOS_ALPHAINFO (CVertexBuffer::TexCoord4) // *************************************************************************** class CLandscapeVBAllocator { public: enum TType {Far0, Far1, Tile}; CLandscapeVBAllocator(TType type); ~CLandscapeVBAllocator(); void updateDriver(IDriver *driver); // delete all VB, and free driver ressources (if RefPtr driver not deleted). clear list too. void clear(); // @{ // true if reallocationOccurs during a allocateVertex() or a setDriver(). // a buildVBInfo() should be done and ALL data are lost, so all VB must be rewrited. bool reallocationOccurs() const {return _ReallocationOccur;} void resetReallocation(); // Allocate free vertices in VB. (AGP or RAM). work with locked or unlocked buffer. // NB: if reallocationOccurs(), then ALL data are lost. uint allocateVertex(); // Delete free vertices in VB. (AGP or RAM). void deleteVertex(uint vid); // @} // @{ void lockBuffer(CFarVertexBufferInfo &farVB); void lockBuffer(CNearVertexBufferInfo &tileVB); void unlockBuffer(); bool bufferLocked() const {return _BufferLocked;} void activate(uint vpId); // @} // ****************** private: // For Debug. struct CVertexInfo { bool Free; }; private: TType _Type; bool _ReallocationOccur; // List of vertices free. std::vector<uint> _VertexFreeMemory; std::vector<CVertexInfo> _VertexInfos; uint _NumVerticesAllocated; // @{ // a refPtr on the driver, to delete VBuffer Hard at clear(). NLMISC::CRefPtr<IDriver> _Driver; // tell if VBHard is possible. bool _VBHardOk; CVertexBuffer _VB; NLMISC::CRefPtr<IVertexBufferHard> _VBHard; bool _BufferLocked; /* try to create a vertexBufferHard or a vbSoft if not possible. After this call, the vertexBufferHard may be NULL. */ void deleteVertexBuffer(); void allocateVertexBuffer(uint32 numVertices); // @} // @{ enum {MaxVertexProgram= 2,}; // Vertex Program , NULL if not enabled. CVertexProgram *_VertexProgram[MaxVertexProgram]; void deleteVertexProgram(); void setupVBFormatAndVertexProgram(bool withVertexProgram); // @} }; } // NL3D #endif // NL_LANDSCAPEVB_ALLOCATOR_H /* End of landscapevb_allocator.h */