Equalizer 1.0

texture.h

00001 
00002 /* Copyright (c) 2009-2011, Stefan Eilemann <eile@equalizergraphics.com>
00003  *                    2010, Cedric Stalder <cedric.stalder@gmail.com>
00004  *
00005  * This library is free software; you can redistribute it and/or modify it under
00006  * the terms of the GNU Lesser General Public License version 2.1 as published
00007  * by the Free Software Foundation.
00008  *  
00009  * This library is distributed in the hope that it will be useful, but WITHOUT
00010  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
00011  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
00012  * details.
00013  * 
00014  * You should have received a copy of the GNU Lesser General Public License
00015  * along with this library; if not, write to the Free Software Foundation, Inc.,
00016  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00017  */
00018 
00019 #ifndef EQUTIL_TEXTURE_H
00020 #define EQUTIL_TEXTURE_H
00021 
00022 #include <eq/gl.h>           // GLEW
00023 #include <eq/frame.h>        // Frame::Buffer enum
00024 
00025 #include <co/base/thread.h>         // thread debug macro
00026 #include <co/base/nonCopyable.h>    // base class
00027 
00028 namespace eq
00029 {
00030     class Image;
00031 
00032 namespace util
00033 {
00040     class Texture : public co::base::NonCopyable
00041     {
00042     public:
00051         EQ_API Texture( const GLenum target,
00052                            const GLEWContext* const glewContext = 0 );
00053 
00055         EQ_API virtual ~Texture();
00056 
00060         GLenum getTarget() const { return _target; }
00061 
00066         uint32_t getCompressorTarget() const;
00067 
00073         GLuint getInternalFormat() const { return _internalFormat; }
00074 
00082         EQ_API void setExternalFormat( const uint32_t format,
00083                                        const uint32_t type );
00084 
00089         GLuint getFormat() const { return _format; }
00090 
00095         GLuint getType() const { return _type; }
00096 
00098         GLuint getName() const { return _name; }
00099 
00101         int32_t getWidth() const { return _width; }
00102 
00104         int32_t getHeight() const { return _height; }
00105 
00107         EQ_API bool isValid() const;
00109 
00120         EQ_API void init( const GLuint internalFormat, const int32_t width,
00121                           const int32_t height );
00122 
00127         EQ_API void flush();
00128 
00130         void applyZoomFilter( const ZoomFilter filter ) const;
00131 
00132         void applyWrap() const; //<! @internal
00133 
00139         EQ_API void copyFromFrameBuffer( const GLuint internalFormat,
00140                                             const fabric::PixelViewport& pvp );
00141 
00143         EQ_API void upload( const int32_t width, const int32_t height,
00144                             const void* ptr );
00145 
00150         EQ_API void download( void* buffer ) const;
00151 
00153         EQ_API void bind() const;
00154 
00156         EQ_API void bindToFBO( const GLenum target, const int32_t width,
00157                                   const int32_t height );
00158         
00160         EQ_API void resize( const int32_t width, const int32_t height );
00161 
00163         EQ_API void writeRGB( const std::string& filename ) const;
00165 
00166         const GLEWContext* glewGetContext() const { return _glewContext; }
00167         void setGLEWContext( const GLEWContext* context )
00168             { _glewContext = context; }
00169 
00176         EQ_API void flushNoDelete();
00177 
00191         EQ_API void setGLData( const GLuint id, const GLuint internalFormat,
00192                                const int32_t width, const int32_t height );
00194 
00195     private:
00197         GLuint _name;
00198 
00200         const GLenum _target;
00201 
00203         GLuint _internalFormat;
00204 
00206         GLuint _format;
00207 
00209         GLuint _type;
00210         
00212         int32_t _width;
00213 
00215         int32_t _height;
00216 
00218         bool _defined;
00219 
00220         const GLEWContext* _glewContext;
00221 
00222         struct Private;
00223         Private* _private; // placeholder for binary-compatible changes
00224 
00233         void _setInternalFormat( const GLuint internalFormat );
00234 
00236         void _generate();
00237         
00239         void _grow( const int32_t width, const int32_t height );
00240 
00241         EQ_TS_VAR( _thread );
00242     };
00243 }
00244 }
00245 
00246 #endif // EQUTIL_TEXTURE_H
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