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# OgreGLGpuNvparseProgram.cpp

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    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 "OgreGLGpuNvparseProgram.h"
    00027 #include "OgreException.h"
    00028 #include "OgreRoot.h"
    00029 #include "OgreRenderSystem.h"
    00030 #include "OgreRenderSystemCapabilities.h"
    00031 #include "OgreLogManager.h"
    00032 #include "nvparse.h"
    00033
    00034 using namespace Ogre;
    00035
    00036 GLGpuNvparseProgram::GLGpuNvparseProgram(const String& name, GpuProgramType gptype, const String& syntaxCode) :
    00037     GLGpuProgram(name, gptype, syntaxCode)
    00038 {
    00039     mProgramID = glGenLists(1);
    00040 }
    00041
    00042 void GLGpuNvparseProgram::bindProgram(void)
    00043 {
    00044      glCallList(mProgramID);
    00045      glEnable(GL_TEXTURE_SHADER_NV);
    00046      glEnable(GL_REGISTER_COMBINERS_NV);
    00047      glEnable(GL_PER_STAGE_CONSTANTS_NV);
    00048 }
    00049
    00050 void GLGpuNvparseProgram::unbindProgram(void)
    00051 {
    00052
    00053     glDisable(GL_TEXTURE_SHADER_NV);
    00054     glDisable(GL_REGISTER_COMBINERS_NV);
    00055     glDisable(GL_PER_STAGE_CONSTANTS_NV);
    00056 }
    00057
    00058 void GLGpuNvparseProgram::bindProgramParameters(GpuProgramParametersSharedPtr params)
    00059 {
    00060     // NB, register combiners uses 2 constants per texture stage (0 and 1)
    00061     // We have stored these as (stage * 2) + const_index
    00062
    00063     if (params->hasRealConstantParams())
    00064     {
    00065         // Iterate over params and set the relevant ones
    00066         GpuProgramParameters::RealConstantIterator realIt =
    00067             params->getRealConstantIterator();
    00068         unsigned int index = 0;
    00069         while (realIt.hasMoreElements())
    00070         {
    00071             const GpuProgramParameters::RealConstantEntry* e = realIt.peekNextPtr();
    00072             if (e->isSet)
    00073             {
    00074                 GLenum combinerStage = GL_COMBINER0_NV + (unsigned int)(index / 2);
    00075                 GLenum pname = GL_CONSTANT_COLOR0_NV + (index % 2);
    00076                 glCombinerStageParameterfvNV_ptr(combinerStage, pname, e->val);
    00077             }
    00078             index++;
    00079             realIt.moveNext();
    00080         }
    00081     }
    00082
    00083 }
    00084 void GLGpuNvparseProgram::unload(void)
    00085 {
    00086     glDeleteLists(mProgramID,1);
    00087 }
    00088
    00089 void GLGpuNvparseProgram::loadFromSource(void)
    00090 {
    00091     glNewList(mProgramID, GL_COMPILE);
    00092
    00093     String::size_type pos = mSource.find("!!");
    00094
    00095     while (pos != String::npos) {
    00096         String::size_type newPos = mSource.find("!!", pos + 1);
    00097
    00098         String script = mSource.substr(pos, newPos - pos);
    00099         nvparse(script.c_str(), 0);
    00100
    00101         for (char* const * errors= nvparse_get_errors(); *errors; errors++)
    00102         {
    00103             LogManager::getSingleton().logMessage("Warning: nvparse reported the following errors:");
    00104             LogManager::getSingleton().logMessage("\t" + String(*errors));
    00105         }
    00106
    00107         pos = newPos;
    00108     }
    00109
    00110     glEndList();
    00111 }
    00112

Copyright © 2002-2003 by The OGRE Team
Last modified Sun Nov 28 19:48:24 2004