00001 ////////////////////////////////////////////////////////////////////// 00002 // 6/26/02 Aaron Lefohn Scientific Computing and Imaging Institute 00003 // School of Computing University of Utah 00004 // 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 // 00010 // This library is distributed in the hope that it will be useful, 00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 // Lesser General Public License for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public 00016 // License along with this library; if not, write to the Free Software 00017 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 00019 #if !defined(AFX_FRAGMENTSHADER_H__BD1A3C75_D5A6_4D83_B2C9_F29380C64FB3__INCLUDED_) 00020 #define AFX_FRAGMENTSHADER_H__BD1A3C75_D5A6_4D83_B2C9_F29380C64FB3__INCLUDED_ 00021 00022 #if _MSC_VER > 1000 00023 #pragma once 00024 #endif // _MSC_VER > 1000 00025 00026 00027 #include "../core/gliftObject.h" 00028 #include "texConst.h" 00029 #include "texTrans.h" 00030 #include "../util/gliftDecl.h" 00031 #include <mathGutz.h> 00032 #include <arrayGutz.h> 00033 00034 #include <string> 00035 #include <vector> 00036 00037 namespace glift { 00038 00039 class TexCoordPerturb; 00040 typedef std::vector<gutz::vec3f> Vecvec3f; 00041 typedef std::vector<bool> VecBool; 00042 typedef std::vector<TexCoordPerturb> VecTexPerturb; 00043 typedef std::vector<TexCoordPerturb*> VecTexPerturbP; 00044 00045 ///////////////////////////////////////////////////////////////////////// 00046 /// 00047 /// TexCoordPerturb: Definition of texture coord transforms and constants 00048 /// that accompany a programmable pixel and vertex shader. 00049 /// 00050 /// - 'numTexUnits' specifies the number of texture units for which texture 00051 /// coordinates should be generated. 00052 /// - The constructors ensure that any texture unit can only have one 00053 /// transform and one constant applied per channel of each unit. 00054 /// - The constructors ensure that the texture unit specified by a transform 00055 /// or constant is less than 'numTexUnits'. 00056 /// - If 'numTexUnits' is larger than the max number of perturbs specified, 00057 /// "no-op" perturbations will be created that do not perturb the texture 00058 /// coordinates, but still generate coords for that texture unit. 00059 /// 00060 /////////////////////////////////////////////////////////////////////// 00061 00062 class _export_ TexCoordPerturb : public GliftObject 00063 { 00064 public: 00065 TexCoordPerturb( uint numTexUnits, const VecTexConst& vecTexConst=VecTexConst() ); 00066 TexCoordPerturb( uint numTexUnits, const VecTexTrans& vecTexTrans, const VecTexConst& vecTexConst=VecTexConst() ); 00067 00068 /// Generate appropriate texture coordinates, taking into account 00069 /// multiTexturing, texCoordTransforms, and texture contants 00070 virtual MultiTexCoord* genTexCoords( const gutz::arrayw2f& rawTexCoord, const gutz::vec3f& primScale ); 00071 00072 int numTexUnits() const {return m_texTrans.size();} 00073 00074 private: 00075 VecVecTexTrans m_texTrans; 00076 VecVecTexConst m_texConst; 00077 00078 void initTexTrans( uint numTexUnits, const VecTexTrans& texTransform ); 00079 void initTexConst( uint numTexUnits, const VecTexConst& texConst ); 00080 void checkTexUnitMin( uint numTexUnits ); 00081 void checkTexUnit( const char* callingFuncName, const char* inputVecName, 00082 uint texUnit, uint vecIndex, uint maxTexUnits ); 00083 00084 }; 00085 00086 } /// End of namespace glift 00087 00088 #endif /// !defined(AFX_FRAGMENTSHADER_H__BD1A3C75_D5A6_4D83_B2C9_F29380C64FB3__INCLUDED_)
