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79 lines
2.5 KiB
C++
79 lines
2.5 KiB
C++
/****************************************************************************
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This file is part of the GLC-lib library.
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Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
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http://glc-lib.sourceforge.net
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GLC-lib is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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GLC-lib is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with GLC-lib; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*****************************************************************************/
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//! \file glc_ext.cpp implementation of the GLC Opengl extension functions.
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#include "glc_ext.h"
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#include <QString>
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#include <QGLContext>
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#include <QDebug>
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#include <QGLShaderProgram>
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#include <QGLBuffer>
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#if !defined(Q_OS_MAC)
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// GL_point_parameters Point Sprite
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PFNGLPOINTPARAMETERFARBPROC glPointParameterf = NULL;
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PFNGLPOINTPARAMETERFVARBPROC glPointParameterfv = NULL;
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#endif
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// Return true if the extension is supported
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bool glc::extensionIsSupported(const QString& extension)
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{
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QString glExtension(reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS)));
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return glExtension.contains(extension);
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}
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// Return true if VBO extension is succesfully loaded
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bool glc::loadVboExtension()
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{
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QGLBuffer buffer;
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bool result= buffer.create();
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buffer.destroy();
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return result;
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}
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// Load GLSL extensions
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bool glc::loadGlSlExtension()
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{
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return QGLShaderProgram::hasOpenGLShaderPrograms();
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}
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// Load Point Sprite extension
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bool glc::loadPointSpriteExtension()
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{
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bool result= true;
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#if !defined(Q_OS_MAC) && !defined(Q_OS_LINUX)
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const QGLContext* pContext= QGLContext::currentContext();
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glPointParameterf = (PFNGLPOINTPARAMETERFARBPROC)pContext->getProcAddress(QLatin1String("glPointParameterf"));
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if (!glPointParameterf) qDebug() << "not glPointParameterf";
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glPointParameterfv = (PFNGLPOINTPARAMETERFVARBPROC)pContext->getProcAddress(QLatin1String("glPointParameterfv"));
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if (!glPointParameterfv) qDebug() << "not glPointParameterfv";
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result= glPointParameterf && glPointParameterfv;
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#endif
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return result;
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}
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