/* ----------------------------------------------------------------- */
/*                                                                   */
/*  Copyright (c) 2010-2012  hkrn                                    */
/*                                                                   */
/* All rights reserved.                                              */
/*                                                                   */
/* Redistribution and use in source and binary forms, with or        */
/* without modification, are permitted provided that the following   */
/* conditions are met:                                               */
/*                                                                   */
/* - Redistributions of source code must retain the above copyright  */
/*   notice, this list of conditions and the following disclaimer.   */
/* - Redistributions in binary form must reproduce the above         */
/*   copyright notice, this list of conditions and the following     */
/*   disclaimer in the documentation and/or other materials provided */
/*   with the distribution.                                          */
/* - Neither the name of the MMDAI project team nor the names of     */
/*   its contributors may be used to endorse or promote products     */
/*   derived from this software without specific prior written       */
/*   permission.                                                     */
/*                                                                   */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND            */
/* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,       */
/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF          */
/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE          */
/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS */
/* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,          */
/* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED   */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,     */
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,   */
/* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY    */
/* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE           */
/* POSSIBILITY OF SUCH DAMAGE.                                       */
/* ----------------------------------------------------------------- */

#include "vpvl2/qt/CustomGLContext.h"

#include <QtCore/QtCore>

#import <Cocoa/Cocoa.h>
#import <OpenGL/CGLRenderers.h>

namespace vpvl2
{
namespace qt
{

void *CustomGLContext::chooseMacVisual(GDHandle handle)
{
    QVarLengthArray<NSOpenGLPixelFormatAttribute> attrs;
    attrs.append(NSOpenGLPFAStencilSize);
    attrs.append(8);
    attrs.append(NSOpenGLPFAAlphaSize);
    attrs.append(8);
    attrs.append(NSOpenGLPFAColorSize);
    attrs.append(32);
    attrs.append(NSOpenGLPFADepthSize);
    attrs.append(32);
    if (format().sampleBuffers()) {
        attrs.append(NSOpenGLPFAMultisample);
        attrs.append(NSOpenGLPFASampleBuffers);
        attrs.append(1);
        attrs.append(NSOpenGLPFASamples);
        attrs.append(4);
    }
    if (format().doubleBuffer()) {
        attrs.append(NSOpenGLPFADoubleBuffer);
    }
    if (format().directRendering()) {
        attrs.append(NSOpenGLPFAAccelerated);
    }
    else {
        attrs.append(NSOpenGLPFARendererID);
        attrs.append(kCGLRendererGenericFloatID);
    }
    attrs.append(NSOpenGLPFAOpenGLProfile);
    if (format().profile() == QGLFormat::CoreProfile) {
        attrs.append(NSOpenGLProfileVersion3_2Core);
    }
    else {
        attrs.append(NSOpenGLProfileVersionLegacy);
    }
    attrs.append(0);
    NSOpenGLPixelFormat *fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs.constData()];
    return fmt != nil ? fmt : QGLContext::chooseMacVisual(handle);
}

} /* namespace qt */
} /* namespace vpvl2 */

