qglpixelbuffer.cpp

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32****************************************************************************/-
33-
34/*!-
35 \class QGLPixelBuffer-
36 \inmodule QtOpenGL-
37 \brief The QGLPixelBuffer class encapsulates an OpenGL pbuffer.-
38 \since 4.1-
39 \obsolete-
40-
41 \ingroup painting-3D-
42-
43 Rendering into a pbuffer is normally done using full hardware-
44 acceleration. This can be significantly faster than rendering-
45 into a QPixmap.-
46-
47 There are three approaches to using this class:-
48-
49 \list 1-
50 \li \b{We can draw into the pbuffer and convert it to a QImage-
51 using toImage().} This is normally much faster than calling-
52 QGLWidget::renderPixmap().-
53-
54 \li \b{We can draw into the pbuffer and copy the contents into-
55 an OpenGL texture using updateDynamicTexture().} This allows-
56 us to create dynamic textures and works on all systems-
57 with pbuffer support.-
58-
59 \li \b{On systems that support it, we can bind the pbuffer to-
60 an OpenGL texture.} The texture is then updated automatically-
61 when the pbuffer contents change, eliminating the need for-
62 additional copy operations. This is supported only on Windows-
63 and \macos systems that provide the \c render_texture-
64 extension. Note that under Windows, a multi-sampled pbuffer-
65 can't be used in conjunction with the \c render_texture-
66 extension. If a multi-sampled pbuffer is requested under-
67 Windows, the \c render_texture extension is turned off for that-
68 pbuffer.-
69-
70-
71 \endlist-
72-
73 \note This class has been deprecated, use QOpenGLFramebufferObject-
74 for offscreen rendering.-
75-
76 \section1 Threading-
77-
78 As of Qt 4.8, it's possible to render into a QGLPixelBuffer using-
79 a QPainter in a separate thread. Note that OpenGL 2.0 or OpenGL ES-
80 2.0 is required for this to work.-
81-
82 Pbuffers are provided by the OpenGL \c pbuffer extension; call-
83 hasOpenGLPbuffer() to find out if the system provides pbuffers.-
84*/-
85-
86#include <private/qopenglextensions_p.h>-
87-
88#include <QtCore/qglobal.h>-
89#include <QtGui/qopenglframebufferobject.h>-
90-
91#include "gl2paintengineex/qpaintengineex_opengl2_p.h"-
92-
93#include <qglframebufferobject.h>-
94#include <qglpixelbuffer.h>-
95#include <private/qglpixelbuffer_p.h>-
96#include <private/qfont_p.h>-
97#include <qimage.h>-
98-
99QT_BEGIN_NAMESPACE-
100-
101extern QImage qt_gl_read_frame_buffer(const QSize&, bool, bool);-
102-
103-
104QGLContext* QGLPBufferGLPaintDevice::context() const-
105{-
106 return pbuf->d_func()->qctx;
never executed: return pbuf->d_func()->qctx;
0
107}-
108-
109void QGLPBufferGLPaintDevice::beginPaint()-
110{-
111 pbuf->makeCurrent();-
112 QGLPaintDevice::beginPaint();-
113}
never executed: end of block
0
114-
115void QGLPBufferGLPaintDevice::endPaint()-
116{-
117 QOpenGLContext::currentContext()->functions()->glFlush();-
118 QGLPaintDevice::endPaint();-
119}
never executed: end of block
0
120-
121void QGLPBufferGLPaintDevice::setFbo(GLuint fbo)-
122{-
123 m_thisFBO = fbo;-
124}
never executed: end of block
0
125-
126void QGLPBufferGLPaintDevice::setPBuffer(QGLPixelBuffer* pb)-
127{-
128 pbuf = pb;-
129}
never executed: end of block
0
130-
131void QGLPixelBufferPrivate::common_init(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)-
132{-
133 Q_Q(QGLPixelBuffer);-
134 if(init(size, format, shareWidget)) {
init(size, for..., shareWidget)Description
TRUEnever evaluated
FALSEnever evaluated
0
135 req_size = size;-
136 req_format = format;-
137 req_shareWidget = shareWidget;-
138 invalid = false;-
139 glDevice.setPBuffer(q);-
140 }
never executed: end of block
0
141}
never executed: end of block
0
142-
143/*!-
144 Constructs an OpenGL pbuffer of the given \a size. If no \a-
145 format is specified, the \l{QGLFormat::defaultFormat()}{default-
146 format} is used. If the \a shareWidget parameter points to a-
147 valid QGLWidget, the pbuffer will share its context with \a-
148 shareWidget.-
149-
150 If you intend to bind this pbuffer as a dynamic texture, the width-
151 and height components of \c size must be powers of two (e.g., 512-
152 x 128).-
153-
154 \sa size(), format()-
155*/-
156QGLPixelBuffer::QGLPixelBuffer(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)-
157 : d_ptr(new QGLPixelBufferPrivate(this))-
158{-
159 Q_D(QGLPixelBuffer);-
160 d->common_init(size, format, shareWidget);-
161}
never executed: end of block
0
162-
163-
164/*! \overload-
165-
166 Constructs an OpenGL pbuffer with the \a width and \a height. If-
167 no \a format is specified, the-
168 \l{QGLFormat::defaultFormat()}{default format} is used. If the \a-
169 shareWidget parameter points to a valid QGLWidget, the pbuffer-
170 will share its context with \a shareWidget.-
171-
172 If you intend to bind this pbuffer as a dynamic texture, the width-
173 and height components of \c size must be powers of two (e.g., 512-
174 x 128).-
175-
176 \sa size(), format()-
177*/-
178QGLPixelBuffer::QGLPixelBuffer(int width, int height, const QGLFormat &format, QGLWidget *shareWidget)-
179 : d_ptr(new QGLPixelBufferPrivate(this))-
180{-
181 Q_D(QGLPixelBuffer);-
182 d->common_init(QSize(width, height), format, shareWidget);-
183}
never executed: end of block
0
184-
185-
186/*! \fn QGLPixelBuffer::~QGLPixelBuffer()-
187-
188 Destroys the pbuffer and frees any allocated resources.-
189*/-
190QGLPixelBuffer::~QGLPixelBuffer()-
191{-
192 Q_D(QGLPixelBuffer);-
193-
194 // defined in qpaintengine_opengl.cpp-
195 QGLContext *current = const_cast<QGLContext *>(QGLContext::currentContext());-
196 if (current != d->qctx)
current != d->qctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
197 makeCurrent();
never executed: makeCurrent();
0
198 d->cleanup();-
199 if (current && current != d->qctx)
currentDescription
TRUEnever evaluated
FALSEnever evaluated
current != d->qctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
200 current->makeCurrent();
never executed: current->makeCurrent();
0
201}
never executed: end of block
0
202-
203/*! \fn bool QGLPixelBuffer::makeCurrent()-
204-
205 Makes this pbuffer the current OpenGL rendering context. Returns-
206 true on success; otherwise returns \c false.-
207-
208 \sa QGLContext::makeCurrent(), doneCurrent()-
209*/-
210-
211bool QGLPixelBuffer::makeCurrent()-
212{-
213 Q_D(QGLPixelBuffer);-
214 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
215 return false;
never executed: return false;
0
216 d->qctx->makeCurrent();-
217 if (!d->fbo) {
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
218 QOpenGLFramebufferObjectFormat format;-
219 if (d->req_format.stencil())
d->req_format.stencil()Description
TRUEnever evaluated
FALSEnever evaluated
0
220 format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
never executed: format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
0
221 else if (d->req_format.depth())
d->req_format.depth()Description
TRUEnever evaluated
FALSEnever evaluated
0
222 format.setAttachment(QOpenGLFramebufferObject::Depth);
never executed: format.setAttachment(QOpenGLFramebufferObject::Depth);
0
223 if (d->req_format.sampleBuffers())
d->req_format.sampleBuffers()Description
TRUEnever evaluated
FALSEnever evaluated
0
224 format.setSamples(d->req_format.samples());
never executed: format.setSamples(d->req_format.samples());
0
225 d->fbo = new QOpenGLFramebufferObject(d->req_size, format);-
226 d->fbo->bind();-
227 d->glDevice.setFbo(d->fbo->handle());-
228 QOpenGLContext::currentContext()->functions()->glViewport(0, 0, d->req_size.width(), d->req_size.height());-
229 }
never executed: end of block
0
230 return true;
never executed: return true;
0
231}-
232-
233/*! \fn bool QGLPixelBuffer::doneCurrent()-
234-
235 Makes no context the current OpenGL context. Returns \c true on-
236 success; otherwise returns \c false.-
237*/-
238-
239bool QGLPixelBuffer::doneCurrent()-
240{-
241 Q_D(QGLPixelBuffer);-
242 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
243 return false;
never executed: return false;
0
244 d->qctx->doneCurrent();-
245 return true;
never executed: return true;
0
246}-
247-
248/*!-
249 Returns the context of this pixelbuffer.-
250*/-
251QGLContext *QGLPixelBuffer::context() const-
252{-
253 Q_D(const QGLPixelBuffer);-
254 return d->qctx;
never executed: return d->qctx;
0
255}-
256-
257/*!-
258 \fn GLuint QGLPixelBuffer::generateDynamicTexture() const-
259-
260 Generates and binds a 2D GL texture that is the same size as the-
261 pbuffer, and returns the texture's ID. This can be used in-
262 conjunction with bindToDynamicTexture() and-
263 updateDynamicTexture().-
264-
265 \sa size()-
266*/-
267-
268/*! \fn bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)-
269-
270 Binds the texture specified by \a texture_id to this pbuffer.-
271 Returns \c true on success; otherwise returns \c false.-
272-
273 The texture must be of the same size and format as the pbuffer.-
274-
275 To unbind the texture, call releaseFromDynamicTexture(). While-
276 the texture is bound, it is updated automatically when the-
277 pbuffer contents change, eliminating the need for additional copy-
278 operations.-
279-
280 Example:-
281-
282 \snippet code/src_opengl_qglpixelbuffer.cpp 0-
283-
284 \warning This function uses the \c {render_texture} extension,-
285 which is currently not supported under X11. An alternative that-
286 works on all systems (including X11) is to manually copy the-
287 pbuffer contents to a texture using updateDynamicTexture().-
288-
289 \warning For the bindToDynamicTexture() call to succeed on the-
290 \macos, the pbuffer needs a shared context, i.e. the-
291 QGLPixelBuffer must be created with a share widget.-
292-
293 \sa generateDynamicTexture(), releaseFromDynamicTexture()-
294*/-
295-
296/*! \fn void QGLPixelBuffer::releaseFromDynamicTexture()-
297-
298 Releases the pbuffer from any previously bound texture.-
299-
300 \sa bindToDynamicTexture()-
301*/-
302-
303/*! \fn bool QGLPixelBuffer::hasOpenGLPbuffers()-
304-
305 Returns \c true if the OpenGL \c pbuffer extension is present on-
306 this system; otherwise returns \c false.-
307*/-
308-
309/*!-
310 Copies the pbuffer contents into the texture specified with \a-
311 texture_id.-
312-
313 The texture must be of the same size and format as the pbuffer.-
314-
315 Example:-
316-
317 \snippet code/src_opengl_qglpixelbuffer.cpp 1-
318-
319 An alternative on Windows and \macos systems that support the-
320 \c render_texture extension is to use bindToDynamicTexture() to-
321 get dynamic updates of the texture.-
322-
323 \sa generateDynamicTexture(), bindToDynamicTexture()-
324*/-
325void QGLPixelBuffer::updateDynamicTexture(GLuint texture_id) const-
326{-
327 Q_D(const QGLPixelBuffer);-
328 if (d->invalid || !d->fbo)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
329 return;
never executed: return;
0
330-
331 const QGLContext *ctx = QGLContext::currentContext();-
332 if (!ctx)
!ctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
333 return;
never executed: return;
0
334-
335#undef glBindFramebuffer-
336-
337#ifndef GL_READ_FRAMEBUFFER-
338#define GL_READ_FRAMEBUFFER 0x8CA8-
339#endif-
340-
341#ifndef GL_DRAW_FRAMEBUFFER-
342#define GL_DRAW_FRAMEBUFFER 0x8CA9-
343#endif-
344-
345 QOpenGLExtensions extensions(ctx->contextHandle());-
346-
347 ctx->d_ptr->refreshCurrentFbo();-
348-
349 if (d->blit_fbo) {
d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
350 QOpenGLFramebufferObject::blitFramebuffer(d->blit_fbo, d->fbo);-
351 extensions.glBindFramebuffer(GL_READ_FRAMEBUFFER, d->blit_fbo->handle());-
352 }
never executed: end of block
0
353-
354 extensions.glBindTexture(GL_TEXTURE_2D, texture_id);-
355#ifndef QT_OPENGL_ES-
356 GLenum format = ctx->contextHandle()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
ctx->contextHa...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
357 extensions.glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, d->req_size.width(), d->req_size.height(), 0);-
358#else-
359 extensions.glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, d->req_size.width(), d->req_size.height(), 0);-
360#endif-
361-
362 if (d->blit_fbo)
d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
363 extensions.glBindFramebuffer(GL_READ_FRAMEBUFFER, ctx->d_func()->current_fbo);
never executed: extensions.glBindFramebuffer(0x8CA8, ctx->d_func()->current_fbo);
0
364}
never executed: end of block
0
365-
366/*!-
367 Returns the size of the pbuffer.-
368*/-
369QSize QGLPixelBuffer::size() const-
370{-
371 Q_D(const QGLPixelBuffer);-
372 return d->req_size;
never executed: return d->req_size;
0
373}-
374-
375/*!-
376 Returns the contents of the pbuffer as a QImage.-
377*/-
378QImage QGLPixelBuffer::toImage() const-
379{-
380 Q_D(const QGLPixelBuffer);-
381 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
382 return QImage();
never executed: return QImage();
0
383-
384 const_cast<QGLPixelBuffer *>(this)->makeCurrent();-
385 if (d->fbo)
d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
386 d->fbo->bind();
never executed: d->fbo->bind();
0
387 return qt_gl_read_frame_buffer(d->req_size, d->format.alpha(), true);
never executed: return qt_gl_read_frame_buffer(d->req_size, d->format.alpha(), true);
0
388}-
389-
390/*!-
391 Returns the native pbuffer handle.-
392*/-
393Qt::HANDLE QGLPixelBuffer::handle() const-
394{-
395 Q_D(const QGLPixelBuffer);-
396 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
397 return 0;
never executed: return 0;
0
398 return (Qt::HANDLE) d->pbuf;
never executed: return (Qt::HANDLE) d->pbuf;
0
399}-
400-
401/*!-
402 Returns \c true if this pbuffer is valid; otherwise returns \c false.-
403*/-
404bool QGLPixelBuffer::isValid() const-
405{-
406 Q_D(const QGLPixelBuffer);-
407 return !d->invalid;
never executed: return !d->invalid;
0
408}-
409-
410Q_GLOBAL_STATIC(QGLEngineThreadStorage<QGL2PaintEngineEx>, qt_buffer_2_engine)
never executed: end of block
never executed: guard.store(QtGlobalStatic::Destroyed);
never executed: return &holder.value;
guard.load() =...c::InitializedDescription
TRUEnever evaluated
FALSEnever evaluated
0
411-
412/*! \reimp */-
413QPaintEngine *QGLPixelBuffer::paintEngine() const-
414{-
415 return qt_buffer_2_engine()->engine();
never executed: return qt_buffer_2_engine()->engine();
0
416}-
417-
418/*! \reimp */-
419int QGLPixelBuffer::metric(PaintDeviceMetric metric) const-
420{-
421 Q_D(const QGLPixelBuffer);-
422-
423 float dpmx = qt_defaultDpiX()*100./2.54;-
424 float dpmy = qt_defaultDpiY()*100./2.54;-
425 int w = d->req_size.width();-
426 int h = d->req_size.height();-
427 switch (metric) {-
428 case PdmWidth:
never executed: case PdmWidth:
0
429 return w;
never executed: return w;
0
430-
431 case PdmHeight:
never executed: case PdmHeight:
0
432 return h;
never executed: return h;
0
433-
434 case PdmWidthMM:
never executed: case PdmWidthMM:
0
435 return qRound(w * 1000 / dpmx);
never executed: return qRound(w * 1000 / dpmx);
0
436-
437 case PdmHeightMM:
never executed: case PdmHeightMM:
0
438 return qRound(h * 1000 / dpmy);
never executed: return qRound(h * 1000 / dpmy);
0
439-
440 case PdmNumColors:
never executed: case PdmNumColors:
0
441 return 0;
never executed: return 0;
0
442-
443 case PdmDepth:
never executed: case PdmDepth:
0
444 return 32;//d->depth;
never executed: return 32;
0
445-
446 case PdmDpiX:
never executed: case PdmDpiX:
0
447 return qRound(dpmx * 0.0254);
never executed: return qRound(dpmx * 0.0254);
0
448-
449 case PdmDpiY:
never executed: case PdmDpiY:
0
450 return qRound(dpmy * 0.0254);
never executed: return qRound(dpmy * 0.0254);
0
451-
452 case PdmPhysicalDpiX:
never executed: case PdmPhysicalDpiX:
0
453 return qRound(dpmx * 0.0254);
never executed: return qRound(dpmx * 0.0254);
0
454-
455 case PdmPhysicalDpiY:
never executed: case PdmPhysicalDpiY:
0
456 return qRound(dpmy * 0.0254);
never executed: return qRound(dpmy * 0.0254);
0
457-
458 case QPaintDevice::PdmDevicePixelRatio:
never executed: case QPaintDevice::PdmDevicePixelRatio:
0
459 return 1;
never executed: return 1;
0
460-
461 case QPaintDevice::PdmDevicePixelRatioScaled:
never executed: case QPaintDevice::PdmDevicePixelRatioScaled:
0
462 return QPaintDevice::devicePixelRatioFScale();
never executed: return QPaintDevice::devicePixelRatioFScale();
0
463-
464 default:
never executed: default:
0
465 qWarning("QGLPixelBuffer::metric(), Unhandled metric type: %d\n", metric);-
466 break;
never executed: break;
0
467 }-
468 return 0;
never executed: return 0;
0
469}-
470-
471/*!-
472 Generates and binds a 2D GL texture to the current context, based-
473 on \a image. The generated texture id is returned and can be used-
474 in later glBindTexture() calls.-
475-
476 The \a target parameter specifies the texture target.-
477-
478 Equivalent to calling QGLContext::bindTexture().-
479-
480 \sa deleteTexture()-
481*/-
482GLuint QGLPixelBuffer::bindTexture(const QImage &image, GLenum target)-
483{-
484 Q_D(QGLPixelBuffer);-
485#ifndef QT_OPENGL_ES-
486 GLenum format = QOpenGLContext::currentContext()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
QOpenGLContext...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
487 return d->qctx->bindTexture(image, target, GLint(format));
never executed: return d->qctx->bindTexture(image, target, GLint(format));
0
488#else-
489 return d->qctx->bindTexture(image, target, GL_RGBA);-
490#endif-
491}-
492-
493/*! \overload-
494-
495 Generates and binds a 2D GL texture based on \a pixmap.-
496-
497 Equivalent to calling QGLContext::bindTexture().-
498-
499 \sa deleteTexture()-
500*/-
501GLuint QGLPixelBuffer::bindTexture(const QPixmap &pixmap, GLenum target)-
502{-
503 Q_D(QGLPixelBuffer);-
504#ifndef QT_OPENGL_ES-
505 GLenum format = QOpenGLContext::currentContext()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
QOpenGLContext...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
506 return d->qctx->bindTexture(pixmap, target, GLint(format));
never executed: return d->qctx->bindTexture(pixmap, target, GLint(format));
0
507#else-
508 return d->qctx->bindTexture(pixmap, target, GL_RGBA);-
509#endif-
510}-
511-
512/*! \overload-
513-
514 Reads the DirectDrawSurface (DDS) compressed file \a fileName and-
515 generates a 2D GL texture from it.-
516-
517 Equivalent to calling QGLContext::bindTexture().-
518-
519 \sa deleteTexture()-
520*/-
521GLuint QGLPixelBuffer::bindTexture(const QString &fileName)-
522{-
523 Q_D(QGLPixelBuffer);-
524 return d->qctx->bindTexture(fileName);
never executed: return d->qctx->bindTexture(fileName);
0
525}-
526-
527/*!-
528 Removes the texture identified by \a texture_id from the texture cache.-
529-
530 Equivalent to calling QGLContext::deleteTexture().-
531 */-
532void QGLPixelBuffer::deleteTexture(GLuint texture_id)-
533{-
534 Q_D(QGLPixelBuffer);-
535 d->qctx->deleteTexture(texture_id);-
536}
never executed: end of block
0
537-
538/*!-
539 \since 4.4-
540-
541 Draws the given texture, \a textureId, to the given target rectangle,-
542 \a target, in OpenGL model space. The \a textureTarget should be a 2D-
543 texture target.-
544-
545 Equivalent to the corresponding QGLContext::drawTexture().-
546*/-
547void QGLPixelBuffer::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)-
548{-
549 Q_D(QGLPixelBuffer);-
550 d->qctx->drawTexture(target, textureId, textureTarget);-
551}
never executed: end of block
0
552-
553/*!-
554 \since 4.4-
555-
556 Draws the given texture, \a textureId, at the given \a point in OpenGL model-
557 space. The textureTarget parameter should be a 2D texture target.-
558-
559 Equivalent to the corresponding QGLContext::drawTexture().-
560*/-
561void QGLPixelBuffer::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)-
562{-
563 Q_D(QGLPixelBuffer);-
564 d->qctx->drawTexture(point, textureId, textureTarget);-
565}
never executed: end of block
0
566-
567/*!-
568 Returns the format of the pbuffer. The format may be different-
569 from the one that was requested.-
570*/-
571QGLFormat QGLPixelBuffer::format() const-
572{-
573 Q_D(const QGLPixelBuffer);-
574 return d->format;
never executed: return d->format;
0
575}-
576-
577/*! \fn int QGLPixelBuffer::devType() const-
578 \internal-
579*/-
580-
581bool QGLPixelBufferPrivate::init(const QSize &, const QGLFormat &f, QGLWidget *shareWidget)-
582{-
583 widget = new QGLWidget(f, 0, shareWidget);-
584 widget->resize(1, 1);-
585 qctx = const_cast<QGLContext *>(widget->context());-
586 return widget->isValid();
never executed: return widget->isValid();
0
587}-
588-
589bool QGLPixelBufferPrivate::cleanup()-
590{-
591 delete fbo;-
592 fbo = 0;-
593 delete blit_fbo;-
594 blit_fbo = 0;-
595 delete widget;-
596 widget = 0;-
597 return true;
never executed: return true;
0
598}-
599-
600bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)-
601{-
602 Q_UNUSED(texture_id);-
603 return false;
never executed: return false;
0
604}-
605-
606void QGLPixelBuffer::releaseFromDynamicTexture()-
607{-
608}-
609-
610GLuint QGLPixelBuffer::generateDynamicTexture() const-
611{-
612 Q_D(const QGLPixelBuffer);-
613 if (!d->fbo)
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
614 return 0;
never executed: return 0;
0
615-
616 if (d->fbo->format().samples() > 0
d->fbo->format().samples() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
617 && QOpenGLExtensions(QOpenGLContext::currentContext())
QOpenGLExtensi...amebufferBlit)Description
TRUEnever evaluated
FALSEnever evaluated
0
618 .hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit))
QOpenGLExtensi...amebufferBlit)Description
TRUEnever evaluated
FALSEnever evaluated
0
619 {-
620 if (!d->blit_fbo)
!d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
621 const_cast<QOpenGLFramebufferObject *&>(d->blit_fbo) = new QOpenGLFramebufferObject(d->req_size);
never executed: const_cast<QOpenGLFramebufferObject *&>(d->blit_fbo) = new QOpenGLFramebufferObject(d->req_size);
0
622 } else {
never executed: end of block
0
623 return d->fbo->texture();
never executed: return d->fbo->texture();
0
624 }-
625-
626 GLuint texture;-
627 QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();-
628-
629 funcs->glGenTextures(1, &texture);-
630 funcs->glBindTexture(GL_TEXTURE_2D, texture);-
631-
632 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
633 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
634 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
635 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
636-
637 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d->req_size.width(), d->req_size.height(), 0,-
638 GL_RGBA, GL_UNSIGNED_BYTE, 0);-
639-
640 return texture;
never executed: return texture;
0
641}-
642-
643bool QGLPixelBuffer::hasOpenGLPbuffers()-
644{-
645 return QGLFramebufferObject::hasOpenGLFramebufferObjects();
never executed: return QGLFramebufferObject::hasOpenGLFramebufferObjects();
0
646}-
647-
648QT_END_NAMESPACE-
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