qopenglwindow.cpp

Absolute File Name:/home/qt/qt5_coco/qt5/qtbase/src/gui/kernel/qopenglwindow.cpp
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1-
2-
3class QOpenGLWindowPaintDevice : public QOpenGLPaintDevice-
4{-
5public:-
6 QOpenGLWindowPaintDevice(QOpenGLWindow *window) : m_window(window) { }-
7 void ensureActiveTarget() override;-
8-
9 QOpenGLWindow *m_window;-
10};-
11-
12class QOpenGLWindowPrivate : public QPaintDeviceWindowPrivate-
13{-
14 inline QOpenGLWindow* q_func() { return static_cast<QOpenGLWindow *>(q_ptr); } inline const QOpenGLWindow* q_func() const { return static_cast<const QOpenGLWindow *>(q_ptr); } friend class QOpenGLWindow;-
15public:-
16 QOpenGLWindowPrivate(QOpenGLContext *shareContext, QOpenGLWindow::UpdateBehavior updateBehavior)-
17 : updateBehavior(updateBehavior)-
18 , hasFboBlit(false)-
19 , shareContext(shareContext)-
20 {-
21 if (!shareContext)-
22 this->shareContext = qt_gl_global_share_context();-
23 }-
24-
25 ~QOpenGLWindowPrivate();-
26-
27 static QOpenGLWindowPrivate *get(QOpenGLWindow *w) { return w->d_func(); }-
28-
29 void bindFBO();-
30 void initialize();-
31-
32 void beginPaint(const QRegion &region) override;-
33 void endPaint() override;-
34 void flush(const QRegion &region) override;-
35-
36 QOpenGLWindow::UpdateBehavior updateBehavior;-
37 bool hasFboBlit;-
38 QScopedPointer<QOpenGLContext> context;-
39 QOpenGLContext *shareContext;-
40 QScopedPointer<QOpenGLFramebufferObject> fbo;-
41 QScopedPointer<QOpenGLWindowPaintDevice> paintDevice;-
42 QOpenGLTextureBlitter blitter;-
43 QColor backgroundColor;-
44 QScopedPointer<QOffscreenSurface> offscreenSurface;-
45};-
46-
47QOpenGLWindowPrivate::~QOpenGLWindowPrivate()-
48{-
49 QOpenGLWindow * const q = q_func();-
50 if (q->isValid()) {-
51 q->makeCurrent();-
52 paintDevice.reset(0);-
53 fbo.reset(0);-
54 blitter.destroy();-
55 q->doneCurrent();-
56 }-
57}-
58-
59void QOpenGLWindowPrivate::initialize()-
60{-
61 QOpenGLWindow * const q = q_func();-
62-
63 if (context)-
64 return;-
65-
66 context.reset(new QOpenGLContext);-
67 context->setShareContext(shareContext);-
68 context->setFormat(q->requestedFormat());-
69 if (!context->create())-
70 QMessageLogger(__FILE__, 223229, __PRETTY_FUNCTION__).warning("QOpenGLWindow::beginPaint: Failed to create context");-
71 if (!context->makeCurrent(q))-
72 QMessageLogger(__FILE__, 225231, __PRETTY_FUNCTION__).warning("QOpenGLWindow::beginPaint: Failed to make context current");-
73-
74 paintDevice.reset(new QOpenGLWindowPaintDevice(q));-
75 if (updateBehavior == QOpenGLWindow::PartialUpdateBlit)-
76 hasFboBlit = QOpenGLFramebufferObject::hasOpenGLFramebufferBlit();-
77-
78 q->initializeGL();-
79}-
80-
81void QOpenGLWindowPrivate::beginPaint(const QRegion &region)-
82{-
83 (void)region;;-
84 QOpenGLWindow * const q = q_func();-
85-
86 initialize();-
87 context->makeCurrent(q);-
88-
89 const int deviceWidth = q->width() * q->devicePixelRatio();-
90 const int deviceHeight = q->height() * q->devicePixelRatio();-
91 const QSize deviceSize(deviceWidth, deviceHeight);-
92 if (updateBehavior > QOpenGLWindow::NoPartialUpdate
updateBehavior...oPartialUpdateDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
93 if (!fbo
!fboDescription
TRUEnever evaluated
FALSEnever evaluated
 || fbo->size() != deviceSize
fbo->size() != deviceSizeDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
94 QOpenGLFramebufferObjectFormat fboFormat;-
95 fboFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);-
96 if (const int samples = q->requestedFormat().samples()();-
97 if (samples
samples > 0Description
TRUEnever evaluated
FALSEnever evaluated
samples > 0Description
TRUEnever evaluated
FALSEnever evaluated
 > 0
samples > 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
98 if (updateBehavior != QOpenGLWindow::PartialUpdateBlend
updateBehavior...ialUpdateBlendDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
99 fboFormat.setSamples(q->requestedFormat().samples()););
never executed: fboFormat.setSamples(samples);
0
100 else-
101 QMessageLogger(__FILE__, 253260, __PRETTY_FUNCTION__).warning("QOpenGLWindow: PartialUpdateBlend does not support multisampling");
never executed: QMessageLogger(__FILE__, 260, __PRETTY_FUNCTION__).warning("QOpenGLWindow: PartialUpdateBlend does not support multisampling");
0
102 }-
103 fbo.reset(new QOpenGLFramebufferObject(deviceSize, fboFormat));-
104 markWindowAsDirty();-
105 }
never executed: end of block
0
106 }
never executed: end of block
 else {		0
107 markWindowAsDirty();-
108 }
never executed: end of block
0
109-
110 paintDevice->setSize(QSize(deviceWidth, deviceHeight));-
111 paintDevice->setDevicePixelRatio(q->devicePixelRatio());-
112 context->functions()->glViewport(0, 0, deviceWidth, deviceHeight);-
113-
114 context->functions()->glBindFramebuffer(0x8D40, context->defaultFramebufferObject());-
115-
116 q->paintUnderGL();-
117-
118 if (updateBehavior > QOpenGLWindow::NoPartialUpdate
updateBehavior...oPartialUpdateDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
119 fbo->bind();
never executed: fbo->bind();
0
120}
never executed: end of block
0
121-
122void QOpenGLWindowPrivate::endPaint()-
123{-
124 QOpenGLWindow * const q = q_func();-
125-
126 if (updateBehavior > QOpenGLWindow::NoPartialUpdate)-
127 fbo->release();-
128-
129 context->functions()->glBindFramebuffer(0x8D40, context->defaultFramebufferObject());-
130-
131 if (updateBehavior == QOpenGLWindow::PartialUpdateBlit && hasFboBlit) {-
132 const int deviceWidth = q->width() * q->devicePixelRatio();-
133 const int deviceHeight = q->height() * q->devicePixelRatio();-
134 QOpenGLExtensions extensions(context.data());-
135 extensions.glBindFramebuffer(0x8CA8, fbo->handle());-
136 extensions.glBindFramebuffer(0x8CA9, context->defaultFramebufferObject());-
137 extensions.glBlitFramebuffer(0, 0, deviceWidth, deviceHeight,-
138 0, 0, deviceWidth, deviceHeight,-
139 0x00004000, 0x2600);-
140 } else if (updateBehavior > QOpenGLWindow::NoPartialUpdate) {-
141 if (updateBehavior == QOpenGLWindow::PartialUpdateBlend) {-
142 context->functions()->glEnable(0x0BE2);-
143 context->functions()->glBlendFunc(0x0302, 0x0303);-
144 }-
145 if (!blitter.isCreated())-
146 blitter.create();-
147-
148 QRect windowRect(QPoint(0, 0), fbo->size());-
149 QMatrix4x4 target = QOpenGLTextureBlitter::targetTransform(windowRect, windowRect);-
150 blitter.bind();-
151 blitter.blit(fbo->texture(), target, QOpenGLTextureBlitter::OriginBottomLeft);-
152 blitter.release();-
153-
154 if (updateBehavior == QOpenGLWindow::PartialUpdateBlend)-
155 context->functions()->glDisable(0x0BE2);-
156 }-
157-
158 q->paintOverGL();-
159}-
160-
161void QOpenGLWindowPrivate::bindFBO()-
162{-
163 if (updateBehavior > QOpenGLWindow::NoPartialUpdate)-
164 fbo->bind();-
165 else-
166 QOpenGLFramebufferObject::bindDefault();-
167}-
168-
169void QOpenGLWindowPrivate::flush(const QRegion &region)-
170{-
171 (void)region;;-
172 QOpenGLWindow * const q = q_func();-
173 context->swapBuffers(q);-
174 q->frameSwapped();-
175}-
176-
177void QOpenGLWindowPaintDevice::ensureActiveTarget()-
178{-
179 QOpenGLWindowPrivate::get(m_window)->bindFBO();-
180}-
181-
182-
183-
184-
185-
186-
187QOpenGLWindow::QOpenGLWindow(QOpenGLWindow::UpdateBehavior updateBehavior, QWindow *parent)-
188 : QPaintDeviceWindow(*(new QOpenGLWindowPrivate(nullptr, updateBehavior)), parent)-
189{-
190 setSurfaceType(QSurface::OpenGLSurface);-
191}-
192-
193-
194-
195-
196-
197-
198QOpenGLWindow::QOpenGLWindow(QOpenGLContext *shareContext, UpdateBehavior updateBehavior, QWindow *parent)-
199 : QPaintDeviceWindow(*(new QOpenGLWindowPrivate(shareContext, updateBehavior)), parent)-
200{-
201 setSurfaceType(QSurface::OpenGLSurface);-
202}-
203QOpenGLWindow::~QOpenGLWindow()-
204{-
205 makeCurrent();-
206}-
207-
208-
209-
210-
211QOpenGLWindow::UpdateBehavior QOpenGLWindow::updateBehavior() const-
212{-
213 const QOpenGLWindowPrivate * const d = d_func();-
214 return d->updateBehavior;-
215}-
216-
217-
218-
219-
220-
221-
222bool QOpenGLWindow::isValid() const-
223{-
224 const QOpenGLWindowPrivate * const d = d_func();-
225 return d->context && d->context->isValid();-
226}-
227void QOpenGLWindow::makeCurrent()-
228{-
229 QOpenGLWindowPrivate * const d = d_func();-
230-
231 if (!isValid())-
232 return;-
233-
234-
235-
236 if (handle()) {-
237 d->context->makeCurrent(this);-
238 } else {-
239 if (!d->offscreenSurface) {-
240 d->offscreenSurface.reset(new QOffscreenSurface);-
241 d->offscreenSurface->setFormat(d->context->format());-
242 d->offscreenSurface->create();-
243 }-
244 d->context->makeCurrent(d->offscreenSurface.data());-
245 }-
246-
247 d->bindFBO();-
248}-
249void QOpenGLWindow::doneCurrent()-
250{-
251 QOpenGLWindowPrivate * const d = d_func();-
252-
253 if (!isValid())-
254 return;-
255-
256 d->context->doneCurrent();-
257}-
258-
259-
260-
261-
262QOpenGLContext *QOpenGLWindow::context() const-
263{-
264 const QOpenGLWindowPrivate * const d = d_func();-
265 return d->context.data();-
266}-
267-
268-
269-
270-
271QOpenGLContext *QOpenGLWindow::shareContext() const-
272{-
273 const QOpenGLWindowPrivate * const d = d_func();-
274 return d->shareContext;-
275}-
276GLuint QOpenGLWindow::defaultFramebufferObject() const-
277{-
278 const QOpenGLWindowPrivate * const d = d_func();-
279 if (d->updateBehavior > NoPartialUpdate && d->fbo)-
280 return d->fbo->handle();-
281 else if (QOpenGLContext *ctx = QOpenGLContext::currentContext())-
282 return ctx->defaultFramebufferObject();-
283 else-
284 return 0;-
285}-
286-
287extern __attribute__((visibility("default"))) QImage qt_gl_read_framebuffer(const QSize &size, bool alpha_format, bool include_alpha);-
288QImage QOpenGLWindow::grabFramebuffer()-
289{-
290 if (!isValid())-
291 return QImage();-
292-
293 makeCurrent();-
294 return qt_gl_read_framebuffer(size() * devicePixelRatio(), false, false);-
295}-
296void QOpenGLWindow::initializeGL()-
297{-
298}-
299void QOpenGLWindow::resizeGL(int w, int h)-
300{-
301 (void)w;;-
302 (void)h;;-
303}-
304void QOpenGLWindow::paintGL()-
305{-
306}-
307void QOpenGLWindow::paintUnderGL()-
308{-
309}-
310void QOpenGLWindow::paintOverGL()-
311{-
312}-
313-
314-
315-
316-
317-
318-
319void QOpenGLWindow::paintEvent(QPaintEvent *event)-
320{-
321 (void)event;;-
322 paintGL();-
323}-
324-
325-
326-
327-
328-
329-
330void QOpenGLWindow::resizeEvent(QResizeEvent *event)-
331{-
332 (void)event;;-
333 QOpenGLWindowPrivate * const d = d_func();-
334 d->initialize();-
335 resizeGL(width(), height());-
336}-
337-
338-
339-
340-
341int QOpenGLWindow::metric(PaintDeviceMetric metric) const-
342{-
343 const QOpenGLWindowPrivate * const d = d_func();-
344-
345 switch (metric) {-
346 case PdmDepth:-
347 if (d->paintDevice)-
348 return d->paintDevice->depth();-
349 break;-
350 default:-
351 break;-
352 }-
353 return QPaintDeviceWindow::metric(metric);-
354}-
355-
356-
357-
358-
359QPaintDevice *QOpenGLWindow::redirected(QPoint *) const-
360{-
361 const QOpenGLWindowPrivate * const d = d_func();-
362 if (QOpenGLContext::currentContext() == d->context.data())-
363 return d->paintDevice.data();-
364 return 0;-
365}-
366-
367-
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