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# OgreGLTexture.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 © 2000-2002 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
    00026 #ifndef __GLTEXTURE_H__
    00027 #define __GLTEXTURE_H__
    00028
    00029 #include "OgreGLPrerequisites.h"
    00030 #include "OgrePlatform.h"
    00031 #include "OgreRenderTexture.h"
    00032 #include "OgreTexture.h"
    00033 #include "OgreGLSupport.h"
    00034
    00035 namespace Ogre {
    00036
    00037     class GLTexture : public Texture
    00038     {
    00039     public:
    00040         // Constructor, called from SDLTextureManager
    00041         GLTexture( const String& name, GLSupport& support,
    00042                    TextureType texType = TEX_TYPE_2D );
    00043         GLTexture( const String& name, GLSupport& support, TextureType texType,
    00044                    uint width, uint height, uint num_mips, PixelFormat format,
    00045                    TextureUsage usage );
    00046
    00047         virtual ~GLTexture();
    00048
    00049         void load();
    00050         void loadImage( const Image &img );
    00051         void loadImages( const std::vector<Image>& images );
    00052
    00053         void unload();
    00054
    00055         void createRenderTexture();
    00056
    00057         void blitToTexture( const Image& src,
    00058             unsigned uStartX, unsigned uStartY );
    00059
    00060         // Takes the ogre texture type and returns the appropriate GL one
    00061         GLenum getGLTextureType(void) const;
    00062
    00063         // Takes the ogre texture format and returns the appropriate GL one
    00064         GLenum getGLTextureFormat(void) const;
    00065
    00066         GLuint getGLID() const
    00067         { return mTextureID; }
    00068
    00069     protected:
    00070         void generateMipMaps( const uchar *data, bool useSoftware, bool isCompressed,
    00071             size_t faceNumber );
    00072         uchar* rescaleNPower2( const Image& src );
    00073     private:
    00074         GLuint mTextureID;
    00075         GLSupport& mGLSupport;
    00076     };
    00077
    00078     class GLRenderTexture : public RenderTexture
    00079     {
    00080     public:
    00081         GLRenderTexture(const String& name, uint width, uint height)
    00082             : RenderTexture(name, width, height)
    00083         {
    00084         }
    00085
    00086         void _copyToTexture(void);
    00087
    00088         bool requiresTextureFlipping() const { return true; }
    00089         virtual void writeContentsToFile( const String & filename ) {}
    00090     };
    00091 }
    00092
    00093 #endif // __GLTEXTURE_H__

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:26 2004