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PCMGLXGLContext.cpp

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//
// This source file is a part of ParCompMark
// Parallel Compositing Benchmark Framework
//
// for latest info see http://parcompmark.sourceforge.net

//
// Copyright (C) 2006 IT2 ParCompMark Dev. Team
// 
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

//
// Inner includes
//

#include "../include/PCMGLXGLContext.h"

#include "../include/PCMGLXRenderWindow.h"

#include "../include/PCMStringConverter.h"

namespace ParCompMark
{

  //
  // Constructors & destructor
  //

  GLXGLContext::GLXGLContext(XDisplay::Pointer & display, GLXRenderWindow * glxWindow,::XVisualInfo * visualInfo):
        // X Display pointer initializer 
  mDisplay(display              /* Corresponding X Display */
  ),
        // Renderwindow initializer 
  mGLXWindow(glxWindow  /* Corresponding GLX rendering window. */
        )
        // You have to initialize the following attributes:
        // - mInitialized
        // - mDisplay
        // - mGLXWindow
        // - mVisualInfo
        // - mGLXContext
        // - mTainted
  {
        Assert(display.isNotNull() && glxWindow && visualInfo, NULL_POINTER_ERROR, "GLXGLContext::GLXGLContext()");

        mInitialized = false;
        mGLXContext = 0;
        mTainted = false;

        // Copy visual info
        mVisualInfo = new::XVisualInfo();
        memcpy(mVisualInfo, visualInfo, sizeof(::XVisualInfo));

        Logger::getInstance()->log(Logger::NOTICE,
                                 "GLX Context for window `" + mGLXWindow->getCaption() + "\' has been created");
  }

 /*----------------------------------------------------------------------*/

  GLXGLContext::~GLXGLContext()
  {
        if(mInitialized)
         finalize();

        // Delete visual info
        Assert(mVisualInfo, NULL_POINTER_ERROR, "GLXGLContext::finalize()");
        delete mVisualInfo;

        Logger::getInstance()->log(Logger::NOTICE,
                                 "GLX Context for window `" + mGLXWindow->getCaption() + "\' has been destroyed");
  }

 /*----------------------------------------------------------------------*/

  //
  // Methods
  //

  void GLXGLContext::initialize()
  {
        Assert(!mInitialized, INVALID_OPERATION_ERROR, "GLXGLContext::initialize()");

        // Lock and synchronize
        mDisplay.lock();
        mDisplay->synchronize();

        // Create GLX context
        mGLXContext = glXCreateContext(mDisplay->getDisplay(), mVisualInfo, NULL, True);
        Assert(mGLXContext, INVALID_OPERATION_ERROR, "GLXGLContext::initialize()");

        mDisplay.unlock();

        mInitialized = true;
        Logger::getInstance()->log(Logger::DEBUG,
                                 "GLX Context for window `" + mGLXWindow->getCaption() + "\' has been initialized: " +
                                 StringConverter::toString((void *) mGLXContext));
  }

 /*----------------------------------------------------------------------*/

  void GLXGLContext::finalize()
  {
        Assert(mInitialized, INVALID_OPERATION_ERROR, "GLXGLContext::finalize()");

        // Lock and synchronize
        mDisplay.lock();
        mDisplay->synchronize();

        // Destroy GLX context if it is not tainted
        Assert(mGLXContext, NULL_POINTER_ERROR, "GLXGLContext::finalize()");
        if(!mTainted)
         glXDestroyContext(mDisplay->getDisplay(), mGLXContext);

        mDisplay.unlock();

        mInitialized = false;
        Logger::getInstance()->log(Logger::DEBUG,
                                 "GLX Context for window `" + mGLXWindow->getCaption() + "\' has been finalized");
  }

 /*----------------------------------------------------------------------*/

  void GLXGLContext::setCurrent()
  {
        Assert(mInitialized, INVALID_OPERATION_ERROR, "GLXGLContext::setCurrent()");

        mDisplay.lock();
        if(glXMakeCurrent(mDisplay->getDisplay(), mGLXWindow->getWindow(), mGLXContext) != True)
        {
         Except(INTERNAL_ERROR, "GLXGLContext::setCurrent()", "calling glXMakeCurrent");
        }
        mDisplay.unlock();
  }

 /*----------------------------------------------------------------------*/

  void GLXGLContext::releaseCurrent()
  {
        Assert(mInitialized, INVALID_OPERATION_ERROR, "GLXGLContext::releaseCurrent()");

        mDisplay.lock();
        if(glXMakeCurrent(mDisplay->getDisplay(), None, 0) != True)
        {
         Except(INTERNAL_ERROR, "GLXGLContext::releaseCurrent()", "calling glXMakeCurrent");
        }
        mDisplay.unlock();
  }

 /*----------------------------------------------------------------------*/

}

© Copyright - 2006 (IT)² ParCompMark Dev. Team