1 /****************************************************************************
3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the plugins of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:LGPL$
10 ** GNU Lesser General Public License Usage
11 ** This file may be used under the terms of the GNU Lesser General Public
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13 ** appearing in the file LICENSE.LGPL included in the packaging of this
14 ** file. Please review the following information to ensure the GNU Lesser
15 ** General Public License version 2.1 requirements will be met:
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18 ** In addition, as a special exception, Nokia gives you certain additional
19 ** rights. These rights are described in the Nokia Qt LGPL Exception
20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
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26 ** file. Please review the following information to ensure the GNU General
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40 ****************************************************************************/
42 #include "cglconvenience_p.h"
43 #include <QtCore/private/qcore_mac_p.h>
44 #include <Cocoa/Cocoa.h>
47 void (*qcgl_getProcAddress(const QByteArray &procName))()
49 CFURLRef url = CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
50 CFSTR("/System/Library/Frameworks/OpenGL.framework"), kCFURLPOSIXPathStyle, false);
51 CFBundleRef bundle = CFBundleCreate(kCFAllocatorDefault, url);
52 CFStringRef procNameCF = QCFString::toCFStringRef(QString::fromAscii(procName.constData()));
53 void *proc = CFBundleGetFunctionPointerForName(bundle, procNameCF);
56 CFRelease(procNameCF);
57 return (void (*) ())proc;
60 // Match up with createNSOpenGLPixelFormat below!
61 QSurfaceFormat qcgl_surfaceFormat()
63 QSurfaceFormat format;
64 format.setRedBufferSize(8);
65 format.setGreenBufferSize(8);
66 format.setBlueBufferSize(8);
67 format.setAlphaBufferSize(8);
69 format.setDepthBufferSize(24);
70 format.setAccumBufferSize(0);
71 format.setStencilBufferSize(8);
72 format.setSampleBuffers(false);
74 format.setDepth(true);
76 format.setAlpha(true);
77 format.setAccum(false);
78 format.setStencil(true);
79 format.setStereo(false);
80 format.setDirectRendering(false);
85 void *qcgl_createNSOpenGLPixelFormat(const QSurfaceFormat &format)
88 QVector<NSOpenGLPixelFormatAttribute> attrs;
90 attrs.append(NSOpenGLPFADoubleBuffer);
92 if (format.depthBufferSize() > 0)
93 attrs << NSOpenGLPFADepthSize << format.depthBufferSize();
94 if (format.stencilBufferSize() > 0)
95 attrs << NSOpenGLPFAStencilSize << format.stencilBufferSize();
96 if (format.alphaBufferSize() > 0)
97 attrs << NSOpenGLPFAAlphaSize << format.alphaBufferSize();
99 if (format.samples() > 0) {
100 attrs << NSOpenGLPFAMultisample
101 << NSOpenGLPFASampleBuffers << (NSOpenGLPixelFormatAttribute) 1
102 << NSOpenGLPFASamples << (NSOpenGLPixelFormatAttribute) format.samples();
107 NSOpenGLPixelFormat* pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs.constData()];
111 CGLContextObj qcgl_createGlContext()
113 CGLContextObj context;
114 NSOpenGLPixelFormat *format = reinterpret_cast<NSOpenGLPixelFormat *>(qcgl_createNSOpenGLPixelFormat(qcgl_surfaceFormat()));
115 CGLPixelFormatObj cglFormat = static_cast<CGLPixelFormatObj>([format CGLPixelFormatObj]);
116 CGLCreateContext(cglFormat ,NULL, &context);