/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "glextensions.h"

#define RESOLVE_GL_FUNC(f) ok &= bool((f = (_gl##f) context->getProcAddress(QLatin1String("gl" #f))));

bool GLExtensionFunctions::resolve(const QGLContext *context)
{
	bool ok = true;

	RESOLVE_GL_FUNC(GenFramebuffersEXT)
	RESOLVE_GL_FUNC(GenRenderbuffersEXT)
	RESOLVE_GL_FUNC(BindRenderbufferEXT)
	RESOLVE_GL_FUNC(RenderbufferStorageEXT)
	RESOLVE_GL_FUNC(DeleteFramebuffersEXT)
	RESOLVE_GL_FUNC(DeleteRenderbuffersEXT)
	RESOLVE_GL_FUNC(BindFramebufferEXT)
	RESOLVE_GL_FUNC(FramebufferTexture2DEXT)
	RESOLVE_GL_FUNC(FramebufferRenderbufferEXT)
	RESOLVE_GL_FUNC(CheckFramebufferStatusEXT)

        RESOLVE_GL_FUNC(ActiveTexture)
	RESOLVE_GL_FUNC(TexImage3D)

        RESOLVE_GL_FUNC(GenBuffers)
	RESOLVE_GL_FUNC(BindBuffer)
	RESOLVE_GL_FUNC(BufferData)
	RESOLVE_GL_FUNC(DeleteBuffers)
	RESOLVE_GL_FUNC(MapBuffer)
	RESOLVE_GL_FUNC(UnmapBuffer)

	return ok;
}

bool GLExtensionFunctions::fboSupported() {
    return GenFramebuffersEXT
	    && GenRenderbuffersEXT
	    && BindRenderbufferEXT
	    && RenderbufferStorageEXT
	    && DeleteFramebuffersEXT
	    && DeleteRenderbuffersEXT
	    && BindFramebufferEXT
	    && FramebufferTexture2DEXT
	    && FramebufferRenderbufferEXT
	    && CheckFramebufferStatusEXT;
}

bool GLExtensionFunctions::openGL15Supported() {
    return ActiveTexture
	    && TexImage3D
            && GenBuffers
	    && BindBuffer
	    && BufferData
	    && DeleteBuffers
	    && MapBuffer
	    && UnmapBuffer;
}

#undef RESOLVE_GL_FUNC