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 (c) 2000-2006 Torus Knot Software Ltd 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 You may alternatively use this source under the terms of a specific version of 00025 the OGRE Unrestricted License provided you have obtained such a license from 00026 Torus Knot Software Ltd. 00027 ----------------------------------------------------------------------------- 00028 */ 00029 #ifndef __HardwarePixelBuffer__ 00030 #define __HardwarePixelBuffer__ 00031 00032 // Precompiler options 00033 #include "OgrePrerequisites.h" 00034 #include "OgreHardwareBuffer.h" 00035 #include "OgreSharedPtr.h" 00036 #include "OgrePixelFormat.h" 00037 #include "OgreImage.h" 00038 00039 namespace Ogre { 00040 00047 class _OgreExport HardwarePixelBuffer : public HardwareBuffer 00048 { 00049 protected: 00050 // Extents 00051 size_t mWidth, mHeight, mDepth; 00052 // Pitches (offsets between rows and slices) 00053 size_t mRowPitch, mSlicePitch; 00054 // Internal format 00055 PixelFormat mFormat; 00056 // Currently locked region 00057 PixelBox mCurrentLock; 00058 00060 virtual PixelBox lockImpl(const Image::Box lockBox, LockOptions options) = 0; 00061 00064 virtual void* lockImpl(size_t offset, size_t length, LockOptions options); 00065 00067 // virtual void unlockImpl(void) = 0; 00068 00072 virtual void _clearSliceRTT(size_t zoffset); 00073 friend class RenderTexture; 00074 public: 00076 HardwarePixelBuffer(size_t mWidth, size_t mHeight, size_t mDepth, 00077 PixelFormat mFormat, 00078 HardwareBuffer::Usage usage, bool useSystemMemory, bool useShadowBuffer); 00079 ~HardwarePixelBuffer(); 00080 00084 using HardwareBuffer::lock; 00085 00092 virtual const PixelBox& lock(const Image::Box& lockBox, LockOptions options); 00094 virtual void* lock(size_t offset, size_t length, LockOptions options); 00095 00100 const PixelBox& getCurrentLock(); 00101 00103 virtual void readData(size_t offset, size_t length, void* pDest); 00105 virtual void writeData(size_t offset, size_t length, const void* pSource, 00106 bool discardWholeBuffer = false); 00107 00118 virtual void blit(const HardwarePixelBufferSharedPtr &src, const Image::Box &srcBox, const Image::Box &dstBox); 00119 00125 void blit(const HardwarePixelBufferSharedPtr &src); 00126 00136 virtual void blitFromMemory(const PixelBox &src, const Image::Box &dstBox) = 0; 00137 00143 void blitFromMemory(const PixelBox &src) 00144 { 00145 blitFromMemory(src, Box(0,0,0,mWidth,mHeight,mDepth)); 00146 } 00147 00155 virtual void blitToMemory(const Image::Box &srcBox, const PixelBox &dst) = 0; 00156 00162 void blitToMemory(const PixelBox &dst) 00163 { 00164 blitToMemory(Box(0,0,0,mWidth,mHeight,mDepth), dst); 00165 } 00166 00174 virtual RenderTexture *getRenderTarget(size_t slice=0); 00175 00177 size_t getWidth() const { return mWidth; } 00179 size_t getHeight() const { return mHeight; } 00181 size_t getDepth() const { return mDepth; } 00183 PixelFormat getFormat() const { return mFormat; } 00184 }; 00185 00187 class _OgreExport HardwarePixelBufferSharedPtr : public SharedPtr<HardwarePixelBuffer> 00188 { 00189 public: 00190 HardwarePixelBufferSharedPtr() : SharedPtr<HardwarePixelBuffer>() {} 00191 explicit HardwarePixelBufferSharedPtr(HardwarePixelBuffer* buf); 00192 00193 00194 }; 00195 00196 } 00197 #endif 00198
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Last modified Thu Jan 22 21:26:10 2009