| VRS - The Virtual Rendering System |
| version 3.3 |
00001 /****************************************************************************** 00002 * VRS - The Virtual Rendering System 00003 * Copyright (C) 2002 Computer Graphics Systems Group at the 00004 * Hasso-Plattner-Institute (HPI), Potsdam, Germany. 00005 * 00006 * This library is free software; you can redistribute it and/or modify it 00007 * under the terms of the GNU Lesser General Public License as published by 00008 * the Free Software Foundation; either version 2.1 of the License, or (at 00009 * your option) any later version. This library is distributed in the hope 00010 * that it will be useful, but WITHOUT ANY WARRANTY; without even the implied 00011 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 * GNU Lesser General Public License for more details. You should have received 00013 * a copy of the GNU Lesser+ General Public License along with this library; if 00014 * not, write to the FreeSoftware Foundation, Inc., 59 Temple Place, Suite 330, 00015 * Boston, MA, 02111-1307, USA. 00016 ******************************************************************************/ 00017 00018 // $Id: shader.h 4633 2005-01-03 01:43:11Z klimetschek $ 00019 // $Date: 2005-01-03 02:43:11 +0100 (Mon, 03 Jan 2005) $ 00020 // $Revision: 4633 $ 00021 // $State$ 00022 // $Author: klimetschek $ 00023 // 00024 // $Log$ 00025 // Revision 1.13 2005/01/03 01:43:08 klimetschek 00026 // - modified win32 project layout, splitted vrs.vcproj into vrs_container, vrs_core, vrs_sg, vrs_image, vrs_opengl and vrs_io 00027 // - removed vrs.vcproj 00028 // minor things: 00029 // - added all glutexamples to vrs4glut.sln 00030 // - fixed some problems in glutexamples 00031 // - removed all project references from all VS projects (using solution wide project dependencies instead) 00032 // 00033 // Revision 1.12 2004/11/05 13:58:09 basch 00034 // Class comment changed (Doxygen style) 00035 // 00036 // Revision 1.11 2004/03/12 16:28:39 baumann 00037 // macros VRS_NAMESPACE_BEGIN/_END expanded and removed 00038 // 00039 // Revision 1.10 2003/11/07 14:19:24 kirsch 00040 // removed leading underscore from include guards 00041 // 00042 // Revision 1.9 2003/01/31 12:32:16 kirsch 00043 // removed most unused parameter names 00044 // 00045 // Revision 1.8 2002/11/29 18:43:41 kirsch 00046 // changed Interface of Shader: 00047 // - preparePass() returns void instead of bool 00048 // - canBeUsed(), start(), stop(), needsPass(), preparePass(), finishPass(), 00049 // pausePass(), continuePass(), and eval() all get the attribute as 00050 // argument which caused the evaluation of the shader 00051 // - removed shader::shaderStack() 00052 // - added (Engine): pushShader(), popShader(), getShader(), and getShaderAttribute() 00053 // 00054 // Revision 1.7 2002/11/29 10:01:48 kirsch 00055 // added Shader::isApplicableForCurrentPass, to let shaders decide whether 00056 // they are active in a certain rendering-pass or not 00057 // 00058 // Revision 1.6 2002/11/07 13:13:06 baumann 00059 // code cleanup 00060 // 00061 // Revision 1.5 2002/11/05 07:31:36 baumann 00062 // code cleanup 00063 // 00064 // Revision 1.4 2002/11/04 21:32:15 nienhaus 00065 // removed static member and static method 00066 // 00067 // Revision 1.3 2002/11/03 19:46:02 nienhaus 00068 // The shading interface has been changed. A shader forms a handler, now. 00069 // 00070 // Revision 1.2 2002/10/17 09:12:49 nienhaus 00071 // removed redundant methods `prepareEval' and `finishEval' 00072 // use èval' instead 00073 // 00074 // Revision 1.1 2002/10/15 09:56:54 nienhaus 00075 // initial check-in 00076 // 00077 00078 #ifndef VRS_SHADER_H_ 00079 #define VRS_SHADER_H_ 00080 00081 #include <vrs/handler.h> 00082 00083 namespace VRS { 00084 00085 class Engine; 00086 class MonoAttribute; 00087 class Shape; 00088 00096 class VRS_CORE_API Shader : public Handler { 00097 00098 public: 00099 virtual bool canBeUsed(Engine*, const MonoAttribute*) const; 00103 virtual bool isApplicableForCurrentPass(Engine*, const MonoAttribute*) const; 00110 virtual void start(Engine*, const MonoAttribute*) { } 00111 virtual void stop(Engine*, const MonoAttribute*) { } 00114 virtual bool needsPass(Engine*, const MonoAttribute*, unsigned int pass) const; 00117 virtual void preparePass(Engine*, const MonoAttribute*, unsigned int pass) { } 00118 virtual void finishPass(Engine*, const MonoAttribute*, unsigned int pass) { } 00122 virtual void pausePass(Engine*, const MonoAttribute*) { } 00123 virtual void continuePass(Engine*, const MonoAttribute*) { } 00133 virtual void eval(Engine*, const MonoAttribute*, const Shape*, unsigned int pass); 00139 virtual ID service() const; 00142 virtual ID target() const; 00148 VRS_TYPEINFO(Shader, Handler); 00149 }; 00150 00151 } // namespace VRS 00152 00153 #endif // VRS_SHADER_H_