1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtOpenGL module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
17 ** In addition, as a special exception, Nokia gives you certain additional
18 ** rights. These rights are described in the Nokia Qt LGPL Exception
19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
24 ** and appearing in the file LICENSE.GPL included in the packaging of this
25 ** file. Please review the following information to ensure the GNU General
26 ** Public License version 3.0 requirements will be met:
27 ** http://www.gnu.org/copyleft/gpl.html.
30 ** Alternatively, this file may be used in accordance with the terms and
31 ** conditions contained in a signed written agreement between you and Nokia.
40 ****************************************************************************/
45 #include <QtWidgets/qwidget.h>
46 #include <QtGui/qpaintengine.h>
47 #include <QtOpenGL/qglcolormap.h>
48 #include <QtCore/qmap.h>
49 #include <QtCore/qscopedpointer.h>
51 #include <QtGui/QSurfaceFormat>
56 # include <QtCore/qt_windows.h>
60 # include <OpenGL/gl.h>
61 #elif defined(QT_OPENGL_ES_2)
62 # if defined(Q_OS_MAC)
63 # include <OpenGLES/ES2/gl.h>
65 # include <GLES2/gl2.h>
68 # define GL_DOUBLE GL_FLOAT
71 typedef GLfloat GLdouble;
74 # if defined(Q_OS_MAC)
75 # include <OpenGL/gl.h>
87 class QGLWidgetPrivate;
88 class QGLContextPrivate;
94 DoubleBuffer = 0x0001,
97 AlphaChannel = 0x0008,
99 StencilBuffer = 0x0020,
100 StereoBuffers = 0x0040,
101 DirectRendering = 0x0080,
103 SampleBuffers = 0x0200,
104 DeprecatedFunctions = 0x0400,
105 SingleBuffer = DoubleBuffer << 16,
106 NoDepthBuffer = DepthBuffer << 16,
107 ColorIndex = Rgba << 16,
108 NoAlphaChannel = AlphaChannel << 16,
109 NoAccumBuffer = AccumBuffer << 16,
110 NoStencilBuffer = StencilBuffer << 16,
111 NoStereoBuffers = StereoBuffers << 16,
112 IndirectRendering = DirectRendering << 16,
113 NoOverlay = HasOverlay << 16,
114 NoSampleBuffers = SampleBuffers << 16,
115 NoDeprecatedFunctions = DeprecatedFunctions << 16
117 Q_DECLARE_FLAGS(FormatOptions, FormatOption)
120 Q_DECLARE_OPERATORS_FOR_FLAGS(QGL::FormatOptions)
122 class QGLFormatPrivate;
124 class Q_OPENGL_EXPORT QGLFormat
128 QGLFormat(QGL::FormatOptions options, int plane = 0);
129 QGLFormat(const QGLFormat &other);
130 QGLFormat &operator=(const QGLFormat &other);
133 void setDepthBufferSize(int size);
134 int depthBufferSize() const;
136 void setAccumBufferSize(int size);
137 int accumBufferSize() const;
139 void setRedBufferSize(int size);
140 int redBufferSize() const;
142 void setGreenBufferSize(int size);
143 int greenBufferSize() const;
145 void setBlueBufferSize(int size);
146 int blueBufferSize() const;
148 void setAlphaBufferSize(int size);
149 int alphaBufferSize() const;
151 void setStencilBufferSize(int size);
152 int stencilBufferSize() const;
154 void setSampleBuffers(bool enable);
155 bool sampleBuffers() const;
157 void setSamples(int numSamples);
160 void setSwapInterval(int interval);
161 int swapInterval() const;
163 bool doubleBuffer() const;
164 void setDoubleBuffer(bool enable);
166 void setDepth(bool enable);
168 void setRgba(bool enable);
170 void setAlpha(bool enable);
172 void setAccum(bool enable);
173 bool stencil() const;
174 void setStencil(bool enable);
176 void setStereo(bool enable);
177 bool directRendering() const;
178 void setDirectRendering(bool enable);
179 bool hasOverlay() const;
180 void setOverlay(bool enable);
183 void setPlane(int plane);
185 void setOption(QGL::FormatOptions opt);
186 bool testOption(QGL::FormatOptions opt) const;
188 static QGLFormat defaultFormat();
189 static void setDefaultFormat(const QGLFormat& f);
191 static QGLFormat defaultOverlayFormat();
192 static void setDefaultOverlayFormat(const QGLFormat& f);
194 static bool hasOpenGL();
195 static bool hasOpenGLOverlays();
197 void setVersion(int major, int minor);
198 int majorVersion() const;
199 int minorVersion() const;
201 enum OpenGLContextProfile {
207 void setProfile(OpenGLContextProfile profile);
208 OpenGLContextProfile profile() const;
210 enum OpenGLVersionFlag {
211 OpenGL_Version_None = 0x00000000,
212 OpenGL_Version_1_1 = 0x00000001,
213 OpenGL_Version_1_2 = 0x00000002,
214 OpenGL_Version_1_3 = 0x00000004,
215 OpenGL_Version_1_4 = 0x00000008,
216 OpenGL_Version_1_5 = 0x00000010,
217 OpenGL_Version_2_0 = 0x00000020,
218 OpenGL_Version_2_1 = 0x00000040,
219 OpenGL_ES_Common_Version_1_0 = 0x00000080,
220 OpenGL_ES_CommonLite_Version_1_0 = 0x00000100,
221 OpenGL_ES_Common_Version_1_1 = 0x00000200,
222 OpenGL_ES_CommonLite_Version_1_1 = 0x00000400,
223 OpenGL_ES_Version_2_0 = 0x00000800,
224 OpenGL_Version_3_0 = 0x00001000,
225 OpenGL_Version_3_1 = 0x00002000,
226 OpenGL_Version_3_2 = 0x00004000,
227 OpenGL_Version_3_3 = 0x00008000,
228 OpenGL_Version_4_0 = 0x00010000
230 Q_DECLARE_FLAGS(OpenGLVersionFlags, OpenGLVersionFlag)
232 static OpenGLVersionFlags openGLVersionFlags();
234 static QGLFormat fromSurfaceFormat(const QSurfaceFormat &format);
235 static QSurfaceFormat toSurfaceFormat(const QGLFormat &format);
241 friend Q_OPENGL_EXPORT bool operator==(const QGLFormat&, const QGLFormat&);
242 friend Q_OPENGL_EXPORT bool operator!=(const QGLFormat&, const QGLFormat&);
243 #ifndef QT_NO_DEBUG_STREAM
244 friend Q_OPENGL_EXPORT QDebug operator<<(QDebug, const QGLFormat &);
248 Q_DECLARE_OPERATORS_FOR_FLAGS(QGLFormat::OpenGLVersionFlags)
250 Q_OPENGL_EXPORT bool operator==(const QGLFormat&, const QGLFormat&);
251 Q_OPENGL_EXPORT bool operator!=(const QGLFormat&, const QGLFormat&);
253 #ifndef QT_NO_DEBUG_STREAM
254 Q_OPENGL_EXPORT QDebug operator<<(QDebug, const QGLFormat &);
259 class Q_OPENGL_EXPORT QGLContext
261 Q_DECLARE_PRIVATE(QGLContext)
263 QGLContext(const QGLFormat& format, QPaintDevice* device);
264 QGLContext(const QGLFormat& format);
265 virtual ~QGLContext();
267 virtual bool create(const QGLContext* shareContext = 0);
268 bool isValid() const;
269 bool isSharing() const;
272 static bool areSharing(const QGLContext *context1, const QGLContext *context2);
274 QGLFormat format() const;
275 QGLFormat requestedFormat() const;
276 void setFormat(const QGLFormat& format);
278 // ### Qt 5: return bools + maybe remove virtuals
279 virtual void makeCurrent();
280 virtual void doneCurrent();
282 virtual void swapBuffers() const;
284 QGLFunctions *functions() const;
287 NoBindOption = 0x0000,
288 InvertedYBindOption = 0x0001,
289 MipmapBindOption = 0x0002,
290 PremultipliedAlphaBindOption = 0x0004,
291 LinearFilteringBindOption = 0x0008,
293 MemoryManagedBindOption = 0x0010, // internal flag
294 CanFlipNativePixmapBindOption = 0x0020, // internal flag
295 TemporarilyCachedBindOption = 0x0040, // internal flag
297 DefaultBindOption = LinearFilteringBindOption
298 | InvertedYBindOption
300 InternalBindOption = MemoryManagedBindOption
301 | PremultipliedAlphaBindOption
303 Q_DECLARE_FLAGS(BindOptions, BindOption)
305 GLuint bindTexture(const QImage &image, GLenum target, GLint format,
306 BindOptions options);
307 GLuint bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
308 BindOptions options);
310 GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D,
311 GLint format = GL_RGBA);
312 GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D,
313 GLint format = GL_RGBA);
314 GLuint bindTexture(const QString &fileName);
316 void deleteTexture(GLuint tx_id);
318 void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
319 void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
321 static void setTextureCacheLimit(int size);
322 static int textureCacheLimit();
324 QFunctionPointer getProcAddress(const QString &proc) const;
325 QPaintDevice* device() const;
326 QColor overlayTransparentColor() const;
328 static const QGLContext* currentContext();
330 static QGLContext *fromOpenGLContext(QOpenGLContext *platformContext);
331 QOpenGLContext *contextHandle() const;
334 virtual bool chooseContext(const QGLContext* shareContext = 0);
336 bool deviceIsPixmap() const;
337 bool windowCreated() const;
338 void setWindowCreated(bool on);
339 bool initialized() const;
340 void setInitialized(bool on);
341 void generateFontDisplayLists(const QFont & fnt, int listBase); // ### Qt 5: remove
343 uint colorIndex(const QColor& c) const;
344 void setValid(bool valid);
345 void setDevice(QPaintDevice *pDev);
348 static QGLContext* currentCtx;
351 QGLContext(QOpenGLContext *windowContext);
353 QScopedPointer<QGLContextPrivate> d_ptr;
355 friend class QGLPixelBuffer;
356 friend class QGLPixelBufferPrivate;
357 friend class QGLWidget;
358 friend class QGLWidgetPrivate;
359 friend class QGLGlyphCache;
360 friend class QGL2PaintEngineEx;
361 friend class QGL2PaintEngineExPrivate;
362 friend class QGLEngineShaderManager;
363 friend class QGLTextureGlyphCache;
364 friend struct QGLGlyphTexture;
365 friend class QGLContextGroup;
366 friend class QGLPixmapBlurFilter;
367 friend class QGLExtensions;
368 friend class QGLTexture;
369 friend QGLFormat::OpenGLVersionFlags QGLFormat::openGLVersionFlags();
370 friend class QGLFramebufferObject;
371 friend class QGLFramebufferObjectPrivate;
372 friend class QGLFBOGLPaintDevice;
373 friend class QGLPaintDevice;
374 friend class QGLWidgetGLPaintDevice;
375 friend class QX11GLSharedContexts;
376 friend class QGLContextResourceBase;
377 friend class QSGDistanceFieldGlyphCache;
379 Q_DISABLE_COPY(QGLContext)
382 Q_DECLARE_OPERATORS_FOR_FLAGS(QGLContext::BindOptions)
384 class Q_OPENGL_EXPORT QGLWidget : public QWidget
387 Q_DECLARE_PRIVATE(QGLWidget)
389 explicit QGLWidget(QWidget* parent=0,
390 const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
391 explicit QGLWidget(QGLContext *context, QWidget* parent=0,
392 const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
393 explicit QGLWidget(const QGLFormat& format, QWidget* parent=0,
394 const QGLWidget* shareWidget = 0, Qt::WindowFlags f=0);
397 void qglColor(const QColor& c) const;
398 void qglClearColor(const QColor& c) const;
400 bool isValid() const;
401 bool isSharing() const;
403 // ### Qt 5: return bools
407 bool doubleBuffer() const;
410 QGLFormat format() const;
411 void setFormat(const QGLFormat& format);
413 const QGLContext* context() const;
414 void setContext(QGLContext* context, const QGLContext* shareContext = 0,
415 bool deleteOldContext = true);
417 QPixmap renderPixmap(int w = 0, int h = 0, bool useContext = false);
418 QImage grabFrameBuffer(bool withAlpha = false);
420 void makeOverlayCurrent();
421 const QGLContext* overlayContext() const;
423 static QImage convertToGLFormat(const QImage& img);
425 void setMouseTracking(bool enable);
427 const QGLColormap & colormap() const;
428 void setColormap(const QGLColormap & map);
430 void renderText(int x, int y, const QString & str,
431 const QFont & fnt = QFont(), int listBase = 2000);
432 void renderText(double x, double y, double z, const QString & str,
433 const QFont & fnt = QFont(), int listBase = 2000);
434 QPaintEngine *paintEngine() const;
436 GLuint bindTexture(const QImage &image, GLenum target, GLint format,
437 QGLContext::BindOptions options);
438 GLuint bindTexture(const QPixmap &pixmap, GLenum target, GLint format,
439 QGLContext::BindOptions options);
441 GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D,
442 GLint format = GL_RGBA);
443 GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D,
444 GLint format = GL_RGBA);
446 GLuint bindTexture(const QString &fileName);
448 void deleteTexture(GLuint tx_id);
450 void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
451 void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
454 virtual void updateGL();
455 virtual void updateOverlayGL();
458 bool event(QEvent *);
459 virtual void initializeGL();
460 virtual void resizeGL(int w, int h);
461 virtual void paintGL();
463 virtual void initializeOverlayGL();
464 virtual void resizeOverlayGL(int w, int h);
465 virtual void paintOverlayGL();
467 void setAutoBufferSwap(bool on);
468 bool autoBufferSwap() const;
470 void paintEvent(QPaintEvent*);
471 void resizeEvent(QResizeEvent*);
473 virtual void glInit();
474 virtual void glDraw();
475 int fontDisplayListBase(const QFont & fnt, int listBase = 2000); // ### Qt 5: remove
477 QGLWidget(QGLWidgetPrivate &dd,
478 const QGLFormat &format = QGLFormat(),
480 const QGLWidget* shareWidget = 0,
481 Qt::WindowFlags f = 0);
483 Q_DISABLE_COPY(QGLWidget)
485 friend class QGLDrawable;
486 friend class QGLPixelBuffer;
487 friend class QGLPixelBufferPrivate;
488 friend class QGLContext;
489 friend class QGLContextPrivate;
490 friend class QGLOverlayWidget;
491 friend class QGLPaintDevice;
492 friend class QGLWidgetGLPaintDevice;
497 // QGLFormat inline functions
500 inline bool QGLFormat::doubleBuffer() const
502 return testOption(QGL::DoubleBuffer);
505 inline bool QGLFormat::depth() const
507 return testOption(QGL::DepthBuffer);
510 inline bool QGLFormat::rgba() const
512 return testOption(QGL::Rgba);
515 inline bool QGLFormat::alpha() const
517 return testOption(QGL::AlphaChannel);
520 inline bool QGLFormat::accum() const
522 return testOption(QGL::AccumBuffer);
525 inline bool QGLFormat::stencil() const
527 return testOption(QGL::StencilBuffer);
530 inline bool QGLFormat::stereo() const
532 return testOption(QGL::StereoBuffers);
535 inline bool QGLFormat::directRendering() const
537 return testOption(QGL::DirectRendering);
540 inline bool QGLFormat::hasOverlay() const
542 return testOption(QGL::HasOverlay);
545 inline bool QGLFormat::sampleBuffers() const
547 return testOption(QGL::SampleBuffers);