| VRS - The Virtual Rendering System |
| version 3.3 |
00001 /********************************************************************** 00002 VRS - The Virtual Rendering System 00003 Copyright (C) 2001 Computer Graphics Systems Group at the 00004 Hasso-Plattner-Institute, Potsdam, Germany. 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Lesser General Public 00007 License as published by the Free Software Foundation; either 00008 version 2.1 of the License, or (at your option) any later version. 00009 This library is distributed in the hope that it will be useful, but 00010 WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 00012 See the GNU Lesser General Public License for more details. 00013 You should have received a copy of the GNU Lesser+ General Public 00014 License along with this library; if not, write to the FreeSoftware 00015 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA, 02111-1307, USA. 00016 **********************************************************************/ 00017 // $Id: transparencytechniquegl.h 6735 2009-11-23 11:13:08Z Juri_Engel $ 00018 // $Date: 2009-11-23 12:13:08 +0100 (Mon, 23 Nov 2009) $ 00019 // $Revision: 6735 $ 00020 // $State$ 00021 // $Author: Juri_Engel $ 00022 // 00023 // $Log$ 00024 // Revision 1.19 2006/04/23 21:32:15 klimetschek 00025 // added support for transparent textures 00026 // 00027 // Revision 1.18 2005/01/03 01:43:10 klimetschek 00028 // - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io 00029 // - removed vrs.vcproj 00030 // minor things: 00031 // - added all glutexamples to vrs4glut.sln 00032 // - fixed some problems in glutexamples 00033 // - removed all project references from all VS projects (using solution wide project dependencies instead) 00034 // 00035 // Revision 1.17 2004/11/03 14:45:07 saar 00036 // Class comment changed (Doxygen style) 00037 // 00038 // Revision 1.16 2004/06/28 13:00:37 kirsch 00039 // code cleanup 00040 // 00041 // Revision 1.15 2004/03/12 16:28:41 baumann 00042 // macros VRS_NAMESPACE_BEGIN/_END expanded and removed 00043 // 00044 // Revision 1.14 2004/01/19 11:43:58 baumann 00045 // serialization mechanism improved 00046 // 00047 // Revision 1.13 2003/11/07 14:19:25 kirsch 00048 // removed leading underscore from include guards 00049 // 00050 // Revision 1.12 2003/07/23 17:04:49 baumann 00051 // code cleanup (especially untabified) 00052 // 00053 // Revision 1.11 2002/10/29 10:32:53 baumann 00054 // macros VRS_CLASSNAME_* and VRS_IMPL_TYPEINFO_* removed 00055 // 00056 // Revision 1.10 2002/04/25 08:29:43 kirsch 00057 // added persistency 00058 // 00059 // Revision 1.9 2002/03/03 21:44:26 kosta 00060 // VRS_TYPEINFO-macro rewritten 00061 // 00062 // Revision 1.8 2002/02/19 10:34:19 kosta 00063 // undone all changes since 2002-02-15 00064 // 00065 // Revision 1.5 2002/01/15 16:25:55 kosta 00066 // macros rewritten for a better namespace support 00067 // 00068 // Revision 1.4 2001/11/13 16:36:31 kirsch 00069 // changed line feed to unix style (removed control-M) 00070 // 00071 // Revision 1.3 2001/09/05 14:14:36 kirsch 00072 // Documentation updates 00073 // 00074 // Revision 1.2 2001/09/04 15:17:38 kirsch 00075 // documentation updates 00076 // 00077 // Revision 1.1 2001/08/27 12:59:30 kirsch 00078 // TransparencyTechniqueGL, initial revision 00079 // 00080 // 00081 00082 #ifndef VRS_OPENGL_TRANSPARENCYTECHNIQUEGL_H 00083 #define VRS_OPENGL_TRANSPARENCYTECHNIQUEGL_H 00084 00085 #include <vrs/opengl/techniquegl.h> 00086 00087 namespace VRS { 00088 00089 class ColorBufferGL; 00090 00091 00093 00111 class VRS_CORE_API TransparencyTechniqueGL : public TechniqueGL { 00112 public: 00122 TransparencyTechniqueGL(bool considerAlphaTextures=false); 00123 00124 virtual void start(Engine*); 00125 00126 virtual bool preparePass(Engine*); 00127 virtual void finishPass(Engine*); 00128 00129 virtual bool prepareEval(Engine* engine, const Shape* shape); 00130 virtual void finishEval(Engine* engine, const Shape* shape); 00131 00132 void setConsiderAlphaTextures(bool on); 00133 bool considerAlphaTextures() const; 00134 00135 void setBlendAttribute(SO<ColorBufferGL> val) { blendAttribute_ = val; } 00136 00137 VRS_TYPEINFO(TransparencyTechniqueGL, TechniqueGL); 00138 VRS_SERIALIZABLE(TransparencyTechniqueGL); 00139 00140 private: 00141 int transparentObjects_; 00142 bool considerAlphaTextures_; 00143 SO<ColorBufferGL> blendAttribute_; 00144 }; 00145 00146 } // namespace VRS 00147 00148 #endif // VRS_OPENGL_TRANSPARENCYTECHNIQUEGL_H