Crazy Eddie's GUI System  0.8.4
Texture.h
00001 /***********************************************************************
00002     created:    Sun Jan 11 2009
00003     author:     Paul D Turner
00004 *************************************************************************/
00005 /***************************************************************************
00006  *   Copyright (C) 2004 - 2009 Paul D Turner & The CEGUI Development Team
00007  *
00008  *   Permission is hereby granted, free of charge, to any person obtaining
00009  *   a copy of this software and associated documentation files (the
00010  *   "Software"), to deal in the Software without restriction, including
00011  *   without limitation the rights to use, copy, modify, merge, publish,
00012  *   distribute, sublicense, and/or sell copies of the Software, and to
00013  *   permit persons to whom the Software is furnished to do so, subject to
00014  *   the following conditions:
00015  *
00016  *   The above copyright notice and this permission notice shall be
00017  *   included in all copies or substantial portions of the Software.
00018  *
00019  *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00020  *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00021  *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
00022  *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
00023  *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
00024  *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
00025  *   OTHER DEALINGS IN THE SOFTWARE.
00026  ***************************************************************************/
00027 #ifndef _CEGUIOpenGLESTexture_h_
00028 #define _CEGUIOpenGLESTexture_h_
00029 
00030 #include "CEGUI/Base.h"
00031 #include "CEGUI/Renderer.h"
00032 #include "CEGUI/Texture.h"
00033 #include "CEGUI/RendererModules/OpenGLES/Renderer.h"
00034 
00035 // Start of CEGUI namespace section
00036 namespace CEGUI
00037 {
00039 class OPENGLES_GUIRENDERER_API OpenGLESTexture : public Texture
00040 {
00041 public:
00047     void setOpenGLESTexture(GLuint tex, const Sizef& size);
00048 
00056     GLuint getOpenGLESTexture() const;
00057 
00078     void setTextureSize(const Sizef& sz);
00079 
00087     void grabTexture();
00088 
00094     void restoreTexture();
00095 
00096     // implement abstract members from base class.
00097     const String& getName() const;
00098     const Sizef& getSize() const;
00099     const Sizef& getOriginalDataSize() const;
00100     const Vector2f& getTexelScaling() const;
00101     void loadFromFile(const String& filename, const String& resourceGroup);
00102     void loadFromMemory(const void* buffer, const Sizef& buffer_size,
00103                         PixelFormat pixel_format);
00104     void blitFromMemory(const void* sourceData, const Rectf& area);
00105     void blitToMemory(void* targetData);
00106     bool isPixelFormatSupported(const PixelFormat fmt) const;
00107 
00108 protected:
00109     // Friends (to allow construction and destruction)
00110     friend Texture& OpenGLESRenderer::createTexture(const String&);
00111     friend Texture& OpenGLESRenderer::createTexture(const String&, const String&, const String&);
00112     friend Texture& OpenGLESRenderer::createTexture(const String&, const Sizef&);
00113     friend Texture& OpenGLESRenderer::createTexture(const String&, GLuint, const Sizef&);
00114     friend void OpenGLESRenderer::destroyTexture(const String&);
00115     friend void OpenGLESRenderer::destroyTexture(Texture&);
00116 
00118     OpenGLESTexture(OpenGLESRenderer& owner, const String& name);
00120     OpenGLESTexture(OpenGLESRenderer& owner, const String& name,
00121                   const String& filename, const String& resourceGroup);
00123     OpenGLESTexture(OpenGLESRenderer& owner, const String& name,
00124                     const Sizef& size);
00126     OpenGLESTexture(OpenGLESRenderer& owner, const String& name, GLuint tex,
00127                     const Sizef& size);
00129     virtual ~OpenGLESTexture();
00130 
00132     void generateOpenGLESTexture();
00133 
00135     void updateCachedScaleValues();
00136 
00138     void cleanupOpenGLESTexture();
00139 
00141     void initPixelFormatFields(const PixelFormat fmt);
00142 
00144     void setTextureSize_impl(const Sizef& sz);
00145 
00147     void loadUncompressedTextureBuffer(const Sizef& buffer_size,
00148                                        const void* buffer) const;
00149 
00151     void loadCompressedTextureBuffer(const Sizef& buffer_size,
00152                                      const void* buffer) const;
00153 
00154     GLsizei getCompressedTextureSize(const Sizef& pixel_size) const;
00155 
00157     GLuint d_ogltexture;
00159     Sizef d_size;
00161     uint8* d_grabBuffer;
00163     Sizef d_dataSize;
00165     Vector2f d_texelScaling;
00167     OpenGLESRenderer& d_owner;
00169     const String d_name;
00171     GLenum d_format;
00173     GLenum d_subpixelFormat;
00175     bool d_isCompressed;
00176 };
00177 
00178 } // End of  CEGUI namespace section
00179 
00180 
00181 #endif // end of guard _CEGUIOpenGLESTexture_h_
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