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# OgreD3D9HardwareBufferManager.cpp

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    00001 /*
    00002 -----------------------------------------------------------------------------
    00003 This source file is part of OGRE
    00004     (Object-oriented Graphics Rendering Engine)
    00005 For the latest info, see http://www.ogre3d.org/
    00006
    00007 Copyright © 2000-2003 The OGRE Team
    00008 Also see acknowledgements in Readme.html
    00009
    00010 This program is free software; you can redistribute it and/or modify it under
    00011 the terms of the GNU Lesser General Public License as published by the Free Software
    00012 Foundation; either version 2 of the License, or (at your option) any later
    00013 version.
    00014
    00015 This program is distributed in the hope that it will be useful, but WITHOUT
    00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
    00018
    00019 You should have received a copy of the GNU Lesser General Public License along with
    00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
    00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to
    00022 http://www.gnu.org/copyleft/lesser.txt.
    00023 -----------------------------------------------------------------------------
    00024 */
    00025 #include "OgreD3D9HardwareBufferManager.h"
    00026 #include "OgreD3D9HardwareVertexBuffer.h"
    00027 #include "OgreD3D9HardwareIndexBuffer.h"
    00028 #include "OgreD3D9VertexDeclaration.h"
    00029
    00030 namespace Ogre {
    00031     //-----------------------------------------------------------------------
    00032     D3D9HardwareBufferManager::D3D9HardwareBufferManager(LPDIRECT3DDEVICE9 device)
    00033         : mlpD3DDevice(device)
    00034     {
    00035     }
    00036     //-----------------------------------------------------------------------
    00037     D3D9HardwareBufferManager::~D3D9HardwareBufferManager()
    00038     {
    00039         destroyAllDeclarations();
    00040         destroyAllBindings();
    00041     }
    00042     //-----------------------------------------------------------------------
    00043     HardwareVertexBufferSharedPtr
    00044     D3D9HardwareBufferManager::
    00045     createVertexBuffer(size_t vertexSize, size_t numVerts, HardwareBuffer::Usage usage,
    00046         bool useShadowBuffer)
    00047     {
    00048 #if OGRE_D3D_MANAGE_BUFFERS
    00049         // Override shadow buffer setting; managed buffers are automatically
    00050         // backed by system memory
    00051         // Don't override shadow buffer if discardable, since then we use
    00052         // unmanaged buffers for speed (avoids write-through overhead)
    00053         if (useShadowBuffer && !(usage & HardwareBuffer::HBU_DISCARDABLE))
    00054         {
    00055             useShadowBuffer = false;
    00056             // Also drop any WRITE_ONLY so we can read direct
    00057             if (usage == HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY)
    00058             {
    00059                 usage = HardwareBuffer::HBU_DYNAMIC;
    00060             }
    00061             else if (usage == HardwareBuffer::HBU_STATIC_WRITE_ONLY)
    00062             {
    00063                 usage = HardwareBuffer::HBU_STATIC;
    00064             }
    00065         }
    00066 #endif
    00067         return HardwareVertexBufferSharedPtr(
    00068             new D3D9HardwareVertexBuffer(vertexSize,
    00069             numVerts, usage, mlpD3DDevice, false, useShadowBuffer) );
    00070     }
    00071     //-----------------------------------------------------------------------
    00072     void D3D9HardwareBufferManager::destroyVertexBuffer(HardwareVertexBuffer* buf)
    00073     {
    00074         delete buf;
    00075     }
    00076     //-----------------------------------------------------------------------
    00077     void D3D9HardwareBufferManager::destroyAllDeclarations(void)
    00078     {
    00079         VertexDeclarationList::iterator decl;
    00080         for (decl = mVertexDeclarations.begin(); decl != mVertexDeclarations.end(); ++decl)
    00081         {
    00082             delete *decl;
    00083         }
    00084         mVertexDeclarations.clear();
    00085     }
    00086     //-----------------------------------------------------------------------
    00087     HardwareIndexBufferSharedPtr
    00088     D3D9HardwareBufferManager::
    00089     createIndexBuffer(HardwareIndexBuffer::IndexType itype, size_t numIndexes,
    00090         HardwareBuffer::Usage usage, bool useShadowBuffer)
    00091     {
    00092 #if OGRE_D3D_MANAGE_BUFFERS
    00093         // Override shadow buffer setting; managed buffers are automatically
    00094         // backed by system memory
    00095         if (useShadowBuffer)
    00096         {
    00097             useShadowBuffer = false;
    00098             // Also drop any WRITE_ONLY so we can read direct
    00099             if (usage == HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY)
    00100             {
    00101                 usage = HardwareBuffer::HBU_DYNAMIC;
    00102             }
    00103             else if (usage == HardwareBuffer::HBU_STATIC_WRITE_ONLY)
    00104             {
    00105                 usage = HardwareBuffer::HBU_STATIC;
    00106             }
    00107         }
    00108 #endif
    00109         // NB no longer store the buffer in a local list since reference counted
    00110         return HardwareIndexBufferSharedPtr(
    00111                 new D3D9HardwareIndexBuffer(itype, numIndexes,
    00112                 usage, mlpD3DDevice, false, useShadowBuffer) );
    00113
    00114     }
    00115     //-----------------------------------------------------------------------
    00116     void D3D9HardwareBufferManager::destroyIndexBuffer(HardwareIndexBuffer* buf)
    00117     {
    00118         delete buf;
    00119     }
    00120     //-----------------------------------------------------------------------
    00121     VertexDeclaration* D3D9HardwareBufferManager::createVertexDeclaration(void)
    00122     {
    00123         VertexDeclaration* decl = new D3D9VertexDeclaration(mlpD3DDevice);
    00124         mVertexDeclarations.push_back(decl);
    00125         return decl;
    00126
    00127     }
    00128     //-----------------------------------------------------------------------
    00129     void D3D9HardwareBufferManager::destroyVertexDeclaration(VertexDeclaration* decl)
    00130     {
    00131         mVertexDeclarations.remove(decl);
    00132         delete decl;
    00133     }
    00134
    00135 }

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:20 2004