00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.stevestreeting.com/ogre/ 00006 00007 Copyright © 2000-2003 The OGRE Teameeting 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. 00018 00019 You should have received a copy of the GNU General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/gpl.html. 00023 ----------------------------------------------------------------------------- 00024 */ 00025 00026 #include "OgreGLGpuProgram.h" 00027 #include "OgreException.h" 00028 00029 using namespace Ogre; 00030 00031 GLGpuProgram::GLGpuProgram(const String& name, GpuProgramType gptype, const String& syntaxCode) : 00032 GpuProgram(name, gptype, syntaxCode) 00033 { 00034 } 00035 00036 GLArbGpuProgram::GLArbGpuProgram(const String& name, GpuProgramType gptype, const String& syntaxCode) : 00037 GLGpuProgram(name, gptype, syntaxCode) 00038 { 00039 mProgramType = (gptype == GPT_VERTEX_PROGRAM) ? GL_VERTEX_PROGRAM_ARB : GL_FRAGMENT_PROGRAM_ARB; 00040 glGenProgramsARB_ptr(1, &mProgramID); 00041 } 00042 00043 void GLArbGpuProgram::bindProgram(void) 00044 { 00045 glEnable(mProgramType); 00046 glBindProgramARB_ptr(mProgramType, mProgramID); 00047 } 00048 00049 void GLArbGpuProgram::unbindProgram(void) 00050 { 00051 glBindProgramARB_ptr(mProgramType, 0); 00052 glDisable(mProgramType); 00053 } 00054 00055 void GLArbGpuProgram::bindProgramParameters(GpuProgramParametersSharedPtr params) 00056 { 00057 GLenum type = (mType == GPT_VERTEX_PROGRAM) ? 00058 GL_VERTEX_PROGRAM_ARB : GL_FRAGMENT_PROGRAM_ARB; 00059 00060 if (params->hasRealConstantParams()) 00061 { 00062 // Iterate over params and set the relevant ones 00063 GpuProgramParameters::RealConstantIterator realIt = 00064 params->getRealConstantIterator(); 00065 unsigned int index = 0; 00066 while (realIt.hasMoreElements()) 00067 { 00068 GpuProgramParameters::RealConstantEntry* e = realIt.peekNextPtr(); 00069 if (e->isSet) 00070 { 00071 glProgramLocalParameter4fvARB_ptr(type, index, e->val); 00072 } 00073 index++; 00074 realIt.moveNext(); 00075 } 00076 } 00077 00078 } 00079 00080 void GLArbGpuProgram::unload(void) 00081 { 00082 glDeleteProgramsARB_ptr(1, &mProgramID); 00083 } 00084 00085 void GLArbGpuProgram::loadFromSource(void) 00086 { 00087 glBindProgramARB_ptr(mProgramType, mProgramID); 00088 glProgramStringARB_ptr(mProgramType, GL_PROGRAM_FORMAT_ASCII_ARB, mSource.length(), mSource.c_str()); 00089 if (GL_INVALID_OPERATION == glGetError()) 00090 { 00091 int errPos; 00092 glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errPos); 00093 char errPosStr[16]; 00094 snprintf(errPosStr, 16, "%d", errPos); 00095 char* errStr = (char*)glGetString(GL_PROGRAM_ERROR_STRING_ARB); 00096 // XXX New exception code? 00097 Except(Exception::ERR_INTERNAL_ERROR, 00098 "Cannot load GL vertex program " + mName + 00099 ". Line " + errPosStr + ":\n" + errStr, mName); 00100 } 00101 glBindProgramARB_ptr(mProgramType, 0); 00102 } 00103
Copyright © 2002-2003 by The OGRE Team
Last modified Fri May 14 23:22:11 2004