# OgreGLHardwarePixelBuffer.h

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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 (c) 2000-2005 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 #ifndef __GLPIXELBUFFER_H__
    00026 #define __GLPIXELBUFFER_H__
    00027
    00028 #include "OgreGLPrerequisites.h"
    00029 #include "OgreHardwarePixelBuffer.h"
    00030
    00031 namespace Ogre {
    00032
    00033     class GLHardwarePixelBuffer: public HardwarePixelBuffer
    00034     {
    00035     protected:
    00037         PixelBox lockImpl(const Image::Box lockBox,  LockOptions options);
    00038
    00040         void unlockImpl(void);
    00041
    00042         enum Type {
    00043             TYPE_TEXTURE,       // Texture subsurface
    00044             TYPE_FRAMEBUFFER,   // Framebuffer surface
    00045             TYPE_PBO            // Plain pixel buffer object
    00046         };
    00047         Type mType;
    00048
    00049         // In case this is a texture level, define the texture type and ID
    00050         GLenum mTarget;
    00051         GLenum mFaceTarget; // same as mTarget in case of GL_TEXTURE_xD, but cubemap face for cubemaps
    00052         GLuint mTextureID;
    00053         GLint mFace;
    00054         GLint mLevel;
    00055         bool mSoftwareMipmap;       // Use GLU for mip mapping
    00056         // Internal buffer; either on-card or in system memory, freed/allocated on demand
    00057         // depending on buffer usage
    00058         PixelBox mBuffer;
    00059
    00060         // Buffer allocation/freeage
    00061         void allocateBuffer();
    00062         void freeBuffer();
    00063         // Upload a box of pixels to this buffer on the card
    00064         void upload(const PixelBox &data);
    00065         // Download a box of pixels from the card
    00066         void download(const PixelBox &data);
    00067     public:
    00068         GLHardwarePixelBuffer(GLenum target, GLuint id, GLint face, GLint level, Usage usage,
    00069             bool softwareMipmap);
    00070
    00072         void blit(HardwarePixelBuffer *src, const Image::Box &srcBox, const Image::Box &dstBox);
    00073
    00075         void blitFromMemory(const PixelBox &src, const Image::Box &dstBox);
    00076
    00078         void blitToMemory(const Image::Box &srcBox, const PixelBox &dst);
    00079
    00080         ~GLHardwarePixelBuffer();
    00081     };
    00082
    00083 };
    00084
    00085 #endif

Copyright © 2000-2005 by The OGRE Team
Last modified Sun Nov 20 12:35:59 2005