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qglpixelbuffer.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtOpenGL module of the Qt Toolkit.-
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36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40/*!-
41 \class QGLPixelBuffer-
42 \inmodule QtOpenGL-
43 \brief The QGLPixelBuffer class encapsulates an OpenGL pbuffer.-
44 \since 4.1-
45 \obsolete-
46-
47 \ingroup painting-3D-
48-
49 Rendering into a pbuffer is normally done using full hardware-
50 acceleration. This can be significantly faster than rendering-
51 into a QPixmap.-
52-
53 There are three approaches to using this class:-
54-
55 \list 1-
56 \li \b{We can draw into the pbuffer and convert it to a QImage-
57 using toImage().} This is normally much faster than calling-
58 QGLWidget::renderPixmap().-
59-
60 \li \b{We can draw into the pbuffer and copy the contents into-
61 an OpenGL texture using updateDynamicTexture().} This allows-
62 us to create dynamic textures and works on all systems-
63 with pbuffer support.-
64-
65 \li \b{On systems that support it, we can bind the pbuffer to-
66 an OpenGL texture.} The texture is then updated automatically-
67 when the pbuffer contents change, eliminating the need for-
68 additional copy operations. This is supported only on Windows-
69 and \macos systems that provide the \c render_texture-
70 extension. Note that under Windows, a multi-sampled pbuffer-
71 can't be used in conjunction with the \c render_texture-
72 extension. If a multi-sampled pbuffer is requested under-
73 Windows, the \c render_texture extension is turned off for that-
74 pbuffer.-
75-
76-
77 \endlist-
78-
79 \note This class has been deprecated, use QOpenGLFramebufferObject-
80 for offscreen rendering.-
81-
82 \section1 Threading-
83-
84 As of Qt 4.8, it's possible to render into a QGLPixelBuffer using-
85 a QPainter in a separate thread. Note that OpenGL 2.0 or OpenGL ES-
86 2.0 is required for this to work.-
87-
88 Pbuffers are provided by the OpenGL \c pbuffer extension; call-
89 hasOpenGLPbuffer() to find out if the system provides pbuffers.-
90*/-
91-
92#include <private/qopenglextensions_p.h>-
93-
94#include <QtCore/qglobal.h>-
95#include <QtGui/qopenglframebufferobject.h>-
96-
97#include "gl2paintengineex/qpaintengineex_opengl2_p.h"-
98-
99#include <qglframebufferobject.h>-
100#include <qglpixelbuffer.h>-
101#include <private/qglpixelbuffer_p.h>-
102#include <private/qfont_p.h>-
103#include <qimage.h>-
104-
105QT_BEGIN_NAMESPACE-
106-
107extern QImage qt_gl_read_frame_buffer(const QSize&, bool, bool);-
108-
109-
110QGLContext* QGLPBufferGLPaintDevice::context() const-
111{-
112 return pbuf->d_func()->qctx;
never executed: return pbuf->d_func()->qctx;
0
113}-
114-
115void QGLPBufferGLPaintDevice::beginPaint()-
116{-
117 pbuf->makeCurrent();-
118 QGLPaintDevice::beginPaint();-
119}
never executed: end of block
0
120-
121void QGLPBufferGLPaintDevice::endPaint()-
122{-
123 QOpenGLContext::currentContext()->functions()->glFlush();-
124 QGLPaintDevice::endPaint();-
125}
never executed: end of block
0
126-
127void QGLPBufferGLPaintDevice::setFbo(GLuint fbo)-
128{-
129 m_thisFBO = fbo;-
130}
never executed: end of block
0
131-
132void QGLPBufferGLPaintDevice::setPBuffer(QGLPixelBuffer* pb)-
133{-
134 pbuf = pb;-
135}
never executed: end of block
0
136-
137void QGLPixelBufferPrivate::common_init(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)-
138{-
139 Q_Q(QGLPixelBuffer);-
140 if(init(size, format, shareWidget)) {
init(size, for..., shareWidget)Description
TRUEnever evaluated
FALSEnever evaluated
0
141 req_size = size;-
142 req_format = format;-
143 req_shareWidget = shareWidget;-
144 invalid = false;-
145 glDevice.setPBuffer(q);-
146 }
never executed: end of block
0
147}
never executed: end of block
0
148-
149/*!-
150 Constructs an OpenGL pbuffer of the given \a size. If no \a-
151 format is specified, the \l{QGLFormat::defaultFormat()}{default-
152 format} is used. If the \a shareWidget parameter points to a-
153 valid QGLWidget, the pbuffer will share its context with \a-
154 shareWidget.-
155-
156 If you intend to bind this pbuffer as a dynamic texture, the width-
157 and height components of \c size must be powers of two (e.g., 512-
158 x 128).-
159-
160 \sa size(), format()-
161*/-
162QGLPixelBuffer::QGLPixelBuffer(const QSize &size, const QGLFormat &format, QGLWidget *shareWidget)-
163 : d_ptr(new QGLPixelBufferPrivate(this))-
164{-
165 Q_D(QGLPixelBuffer);-
166 d->common_init(size, format, shareWidget);-
167}
never executed: end of block
0
168-
169-
170/*! \overload-
171-
172 Constructs an OpenGL pbuffer with the \a width and \a height. If-
173 no \a format is specified, the-
174 \l{QGLFormat::defaultFormat()}{default format} is used. If the \a-
175 shareWidget parameter points to a valid QGLWidget, the pbuffer-
176 will share its context with \a shareWidget.-
177-
178 If you intend to bind this pbuffer as a dynamic texture, the width-
179 and height components of \c size must be powers of two (e.g., 512-
180 x 128).-
181-
182 \sa size(), format()-
183*/-
184QGLPixelBuffer::QGLPixelBuffer(int width, int height, const QGLFormat &format, QGLWidget *shareWidget)-
185 : d_ptr(new QGLPixelBufferPrivate(this))-
186{-
187 Q_D(QGLPixelBuffer);-
188 d->common_init(QSize(width, height), format, shareWidget);-
189}
never executed: end of block
0
190-
191-
192/*! \fn QGLPixelBuffer::~QGLPixelBuffer()-
193-
194 Destroys the pbuffer and frees any allocated resources.-
195*/-
196QGLPixelBuffer::~QGLPixelBuffer()-
197{-
198 Q_D(QGLPixelBuffer);-
199-
200 // defined in qpaintengine_opengl.cpp-
201 QGLContext *current = const_cast<QGLContext *>(QGLContext::currentContext());-
202 if (current != d->qctx)
current != d->qctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
203 makeCurrent();
never executed: makeCurrent();
0
204 d->cleanup();-
205 if (current && current != d->qctx)
currentDescription
TRUEnever evaluated
FALSEnever evaluated
current != d->qctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
206 current->makeCurrent();
never executed: current->makeCurrent();
0
207}
never executed: end of block
0
208-
209/*! \fn bool QGLPixelBuffer::makeCurrent()-
210-
211 Makes this pbuffer the current OpenGL rendering context. Returns-
212 true on success; otherwise returns \c false.-
213-
214 \sa QGLContext::makeCurrent(), doneCurrent()-
215*/-
216-
217bool QGLPixelBuffer::makeCurrent()-
218{-
219 Q_D(QGLPixelBuffer);-
220 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
221 return false;
never executed: return false;
0
222 d->qctx->makeCurrent();-
223 if (!d->fbo) {
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
224 QOpenGLFramebufferObjectFormat format;-
225 if (d->req_format.stencil())
d->req_format.stencil()Description
TRUEnever evaluated
FALSEnever evaluated
0
226 format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
never executed: format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
0
227 else if (d->req_format.depth())
d->req_format.depth()Description
TRUEnever evaluated
FALSEnever evaluated
0
228 format.setAttachment(QOpenGLFramebufferObject::Depth);
never executed: format.setAttachment(QOpenGLFramebufferObject::Depth);
0
229 if (d->req_format.sampleBuffers())
d->req_format.sampleBuffers()Description
TRUEnever evaluated
FALSEnever evaluated
0
230 format.setSamples(d->req_format.samples());
never executed: format.setSamples(d->req_format.samples());
0
231 d->fbo = new QOpenGLFramebufferObject(d->req_size, format);-
232 d->fbo->bind();-
233 d->glDevice.setFbo(d->fbo->handle());-
234 QOpenGLContext::currentContext()->functions()->glViewport(0, 0, d->req_size.width(), d->req_size.height());-
235 }
never executed: end of block
0
236 return true;
never executed: return true;
0
237}-
238-
239/*! \fn bool QGLPixelBuffer::doneCurrent()-
240-
241 Makes no context the current OpenGL context. Returns \c true on-
242 success; otherwise returns \c false.-
243*/-
244-
245bool QGLPixelBuffer::doneCurrent()-
246{-
247 Q_D(QGLPixelBuffer);-
248 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
249 return false;
never executed: return false;
0
250 d->qctx->doneCurrent();-
251 return true;
never executed: return true;
0
252}-
253-
254/*!-
255 Returns the context of this pixelbuffer.-
256*/-
257QGLContext *QGLPixelBuffer::context() const-
258{-
259 Q_D(const QGLPixelBuffer);-
260 return d->qctx;
never executed: return d->qctx;
0
261}-
262-
263/*!-
264 \fn GLuint QGLPixelBuffer::generateDynamicTexture() const-
265-
266 Generates and binds a 2D GL texture that is the same size as the-
267 pbuffer, and returns the texture's ID. This can be used in-
268 conjunction with bindToDynamicTexture() and-
269 updateDynamicTexture().-
270-
271 \sa size()-
272*/-
273-
274/*! \fn bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)-
275-
276 Binds the texture specified by \a texture_id to this pbuffer.-
277 Returns \c true on success; otherwise returns \c false.-
278-
279 The texture must be of the same size and format as the pbuffer.-
280-
281 To unbind the texture, call releaseFromDynamicTexture(). While-
282 the texture is bound, it is updated automatically when the-
283 pbuffer contents change, eliminating the need for additional copy-
284 operations.-
285-
286 Example:-
287-
288 \snippet code/src_opengl_qglpixelbuffer.cpp 0-
289-
290 \warning This function uses the \c {render_texture} extension,-
291 which is currently not supported under X11. An alternative that-
292 works on all systems (including X11) is to manually copy the-
293 pbuffer contents to a texture using updateDynamicTexture().-
294-
295 \warning For the bindToDynamicTexture() call to succeed on the-
296 \macos, the pbuffer needs a shared context, i.e. the-
297 QGLPixelBuffer must be created with a share widget.-
298-
299 \sa generateDynamicTexture(), releaseFromDynamicTexture()-
300*/-
301-
302/*! \fn void QGLPixelBuffer::releaseFromDynamicTexture()-
303-
304 Releases the pbuffer from any previously bound texture.-
305-
306 \sa bindToDynamicTexture()-
307*/-
308-
309/*! \fn bool QGLPixelBuffer::hasOpenGLPbuffers()-
310-
311 Returns \c true if the OpenGL \c pbuffer extension is present on-
312 this system; otherwise returns \c false.-
313*/-
314-
315/*!-
316 Copies the pbuffer contents into the texture specified with \a-
317 texture_id.-
318-
319 The texture must be of the same size and format as the pbuffer.-
320-
321 Example:-
322-
323 \snippet code/src_opengl_qglpixelbuffer.cpp 1-
324-
325 An alternative on Windows and \macos systems that support the-
326 \c render_texture extension is to use bindToDynamicTexture() to-
327 get dynamic updates of the texture.-
328-
329 \sa generateDynamicTexture(), bindToDynamicTexture()-
330*/-
331void QGLPixelBuffer::updateDynamicTexture(GLuint texture_id) const-
332{-
333 Q_D(const QGLPixelBuffer);-
334 if (d->invalid || !d->fbo)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
335 return;
never executed: return;
0
336-
337 const QGLContext *ctx = QGLContext::currentContext();-
338 if (!ctx)
!ctxDescription
TRUEnever evaluated
FALSEnever evaluated
0
339 return;
never executed: return;
0
340-
341#undef glBindFramebuffer-
342-
343#ifndef GL_READ_FRAMEBUFFER-
344#define GL_READ_FRAMEBUFFER 0x8CA8-
345#endif-
346-
347#ifndef GL_DRAW_FRAMEBUFFER-
348#define GL_DRAW_FRAMEBUFFER 0x8CA9-
349#endif-
350-
351 QOpenGLExtensions extensions(ctx->contextHandle());-
352-
353 ctx->d_ptr->refreshCurrentFbo();-
354-
355 if (d->blit_fbo) {
d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
356 QOpenGLFramebufferObject::blitFramebuffer(d->blit_fbo, d->fbo);-
357 extensions.glBindFramebuffer(GL_READ_FRAMEBUFFER, d->blit_fbo->handle());-
358 }
never executed: end of block
0
359-
360 extensions.glBindTexture(GL_TEXTURE_2D, texture_id);-
361#ifndef QT_OPENGL_ES-
362 GLenum format = ctx->contextHandle()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
ctx->contextHa...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
363 extensions.glCopyTexImage2D(GL_TEXTURE_2D, 0, format, 0, 0, d->req_size.width(), d->req_size.height(), 0);-
364#else-
365 extensions.glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, d->req_size.width(), d->req_size.height(), 0);-
366#endif-
367-
368 if (d->blit_fbo)
d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
369 extensions.glBindFramebuffer(GL_READ_FRAMEBUFFER, ctx->d_func()->current_fbo);
never executed: extensions.glBindFramebuffer(0x8CA8, ctx->d_func()->current_fbo);
0
370}
never executed: end of block
0
371-
372/*!-
373 Returns the size of the pbuffer.-
374*/-
375QSize QGLPixelBuffer::size() const-
376{-
377 Q_D(const QGLPixelBuffer);-
378 return d->req_size;
never executed: return d->req_size;
0
379}-
380-
381/*!-
382 Returns the contents of the pbuffer as a QImage.-
383*/-
384QImage QGLPixelBuffer::toImage() const-
385{-
386 Q_D(const QGLPixelBuffer);-
387 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
388 return QImage();
never executed: return QImage();
0
389-
390 const_cast<QGLPixelBuffer *>(this)->makeCurrent();-
391 if (d->fbo)
d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
392 d->fbo->bind();
never executed: d->fbo->bind();
0
393 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
394}-
395-
396/*!-
397 Returns the native pbuffer handle.-
398*/-
399Qt::HANDLE QGLPixelBuffer::handle() const-
400{-
401 Q_D(const QGLPixelBuffer);-
402 if (d->invalid)
d->invalidDescription
TRUEnever evaluated
FALSEnever evaluated
0
403 return 0;
never executed: return 0;
0
404 return (Qt::HANDLE) d->pbuf;
never executed: return (Qt::HANDLE) d->pbuf;
0
405}-
406-
407/*!-
408 Returns \c true if this pbuffer is valid; otherwise returns \c false.-
409*/-
410bool QGLPixelBuffer::isValid() const-
411{-
412 Q_D(const QGLPixelBuffer);-
413 return !d->invalid;
never executed: return !d->invalid;
0
414}-
415-
416Q_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
417-
418/*! \reimp */-
419QPaintEngine *QGLPixelBuffer::paintEngine() const-
420{-
421 return qt_buffer_2_engine()->engine();
never executed: return qt_buffer_2_engine()->engine();
0
422}-
423-
424/*! \reimp */-
425int QGLPixelBuffer::metric(PaintDeviceMetric metric) const-
426{-
427 Q_D(const QGLPixelBuffer);-
428-
429 float dpmx = qt_defaultDpiX()*100./2.54;-
430 float dpmy = qt_defaultDpiY()*100./2.54;-
431 int w = d->req_size.width();-
432 int h = d->req_size.height();-
433 switch (metric) {-
434 case PdmWidth:
never executed: case PdmWidth:
0
435 return w;
never executed: return w;
0
436-
437 case PdmHeight:
never executed: case PdmHeight:
0
438 return h;
never executed: return h;
0
439-
440 case PdmWidthMM:
never executed: case PdmWidthMM:
0
441 return qRound(w * 1000 / dpmx);
never executed: return qRound(w * 1000 / dpmx);
0
442-
443 case PdmHeightMM:
never executed: case PdmHeightMM:
0
444 return qRound(h * 1000 / dpmy);
never executed: return qRound(h * 1000 / dpmy);
0
445-
446 case PdmNumColors:
never executed: case PdmNumColors:
0
447 return 0;
never executed: return 0;
0
448-
449 case PdmDepth:
never executed: case PdmDepth:
0
450 return 32;//d->depth;
never executed: return 32;
0
451-
452 case PdmDpiX:
never executed: case PdmDpiX:
0
453 return qRound(dpmx * 0.0254);
never executed: return qRound(dpmx * 0.0254);
0
454-
455 case PdmDpiY:
never executed: case PdmDpiY:
0
456 return qRound(dpmy * 0.0254);
never executed: return qRound(dpmy * 0.0254);
0
457-
458 case PdmPhysicalDpiX:
never executed: case PdmPhysicalDpiX:
0
459 return qRound(dpmx * 0.0254);
never executed: return qRound(dpmx * 0.0254);
0
460-
461 case PdmPhysicalDpiY:
never executed: case PdmPhysicalDpiY:
0
462 return qRound(dpmy * 0.0254);
never executed: return qRound(dpmy * 0.0254);
0
463-
464 case QPaintDevice::PdmDevicePixelRatio:
never executed: case QPaintDevice::PdmDevicePixelRatio:
0
465 return 1;
never executed: return 1;
0
466-
467 case QPaintDevice::PdmDevicePixelRatioScaled:
never executed: case QPaintDevice::PdmDevicePixelRatioScaled:
0
468 return QPaintDevice::devicePixelRatioFScale();
never executed: return QPaintDevice::devicePixelRatioFScale();
0
469-
470 default:
never executed: default:
0
471 qWarning("QGLPixelBuffer::metric(), Unhandled metric type: %d\n", metric);-
472 break;
never executed: break;
0
473 }-
474 return 0;
never executed: return 0;
0
475}-
476-
477/*!-
478 Generates and binds a 2D GL texture to the current context, based-
479 on \a image. The generated texture id is returned and can be used-
480 in later glBindTexture() calls.-
481-
482 The \a target parameter specifies the texture target.-
483-
484 Equivalent to calling QGLContext::bindTexture().-
485-
486 \sa deleteTexture()-
487*/-
488GLuint QGLPixelBuffer::bindTexture(const QImage &image, GLenum target)-
489{-
490 Q_D(QGLPixelBuffer);-
491#ifndef QT_OPENGL_ES-
492 GLenum format = QOpenGLContext::currentContext()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
QOpenGLContext...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
493 return d->qctx->bindTexture(image, target, GLint(format));
never executed: return d->qctx->bindTexture(image, target, GLint(format));
0
494#else-
495 return d->qctx->bindTexture(image, target, GL_RGBA);-
496#endif-
497}-
498-
499/*! \overload-
500-
501 Generates and binds a 2D GL texture based on \a pixmap.-
502-
503 Equivalent to calling QGLContext::bindTexture().-
504-
505 \sa deleteTexture()-
506*/-
507GLuint QGLPixelBuffer::bindTexture(const QPixmap &pixmap, GLenum target)-
508{-
509 Q_D(QGLPixelBuffer);-
510#ifndef QT_OPENGL_ES-
511 GLenum format = QOpenGLContext::currentContext()->isOpenGLES() ? GL_RGBA : GL_RGBA8;
QOpenGLContext...->isOpenGLES()Description
TRUEnever evaluated
FALSEnever evaluated
0
512 return d->qctx->bindTexture(pixmap, target, GLint(format));
never executed: return d->qctx->bindTexture(pixmap, target, GLint(format));
0
513#else-
514 return d->qctx->bindTexture(pixmap, target, GL_RGBA);-
515#endif-
516}-
517-
518/*! \overload-
519-
520 Reads the DirectDrawSurface (DDS) compressed file \a fileName and-
521 generates a 2D GL texture from it.-
522-
523 Equivalent to calling QGLContext::bindTexture().-
524-
525 \sa deleteTexture()-
526*/-
527GLuint QGLPixelBuffer::bindTexture(const QString &fileName)-
528{-
529 Q_D(QGLPixelBuffer);-
530 return d->qctx->bindTexture(fileName);
never executed: return d->qctx->bindTexture(fileName);
0
531}-
532-
533/*!-
534 Removes the texture identified by \a texture_id from the texture cache.-
535-
536 Equivalent to calling QGLContext::deleteTexture().-
537 */-
538void QGLPixelBuffer::deleteTexture(GLuint texture_id)-
539{-
540 Q_D(QGLPixelBuffer);-
541 d->qctx->deleteTexture(texture_id);-
542}
never executed: end of block
0
543-
544/*!-
545 \since 4.4-
546-
547 Draws the given texture, \a textureId, to the given target rectangle,-
548 \a target, in OpenGL model space. The \a textureTarget should be a 2D-
549 texture target.-
550-
551 Equivalent to the corresponding QGLContext::drawTexture().-
552*/-
553void QGLPixelBuffer::drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget)-
554{-
555 Q_D(QGLPixelBuffer);-
556 d->qctx->drawTexture(target, textureId, textureTarget);-
557}
never executed: end of block
0
558-
559/*!-
560 \since 4.4-
561-
562 Draws the given texture, \a textureId, at the given \a point in OpenGL model-
563 space. The textureTarget parameter should be a 2D texture target.-
564-
565 Equivalent to the corresponding QGLContext::drawTexture().-
566*/-
567void QGLPixelBuffer::drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget)-
568{-
569 Q_D(QGLPixelBuffer);-
570 d->qctx->drawTexture(point, textureId, textureTarget);-
571}
never executed: end of block
0
572-
573/*!-
574 Returns the format of the pbuffer. The format may be different-
575 from the one that was requested.-
576*/-
577QGLFormat QGLPixelBuffer::format() const-
578{-
579 Q_D(const QGLPixelBuffer);-
580 return d->format;
never executed: return d->format;
0
581}-
582-
583/*! \fn int QGLPixelBuffer::devType() const-
584 \internal-
585*/-
586-
587bool QGLPixelBufferPrivate::init(const QSize &, const QGLFormat &f, QGLWidget *shareWidget)-
588{-
589 widget = new QGLWidget(f, 0, shareWidget);-
590 widget->resize(1, 1);-
591 qctx = const_cast<QGLContext *>(widget->context());-
592 return widget->isValid();
never executed: return widget->isValid();
0
593}-
594-
595bool QGLPixelBufferPrivate::cleanup()-
596{-
597 delete fbo;-
598 fbo = 0;-
599 delete blit_fbo;-
600 blit_fbo = 0;-
601 delete widget;-
602 widget = 0;-
603 return true;
never executed: return true;
0
604}-
605-
606bool QGLPixelBuffer::bindToDynamicTexture(GLuint texture_id)-
607{-
608 Q_UNUSED(texture_id);-
609 return false;
never executed: return false;
0
610}-
611-
612void QGLPixelBuffer::releaseFromDynamicTexture()-
613{-
614}-
615-
616GLuint QGLPixelBuffer::generateDynamicTexture() const-
617{-
618 Q_D(const QGLPixelBuffer);-
619 if (!d->fbo)
!d->fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
620 return 0;
never executed: return 0;
0
621-
622 if (d->fbo->format().samples() > 0
d->fbo->format().samples() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
623 && QOpenGLExtensions(QOpenGLContext::currentContext())
QOpenGLExtensi...amebufferBlit)Description
TRUEnever evaluated
FALSEnever evaluated
0
624 .hasOpenGLExtension(QOpenGLExtensions::FramebufferBlit))
QOpenGLExtensi...amebufferBlit)Description
TRUEnever evaluated
FALSEnever evaluated
0
625 {-
626 if (!d->blit_fbo)
!d->blit_fboDescription
TRUEnever evaluated
FALSEnever evaluated
0
627 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
628 } else {
never executed: end of block
0
629 return d->fbo->texture();
never executed: return d->fbo->texture();
0
630 }-
631-
632 GLuint texture;-
633 QOpenGLFunctions *funcs = QOpenGLContext::currentContext()->functions();-
634-
635 funcs->glGenTextures(1, &texture);-
636 funcs->glBindTexture(GL_TEXTURE_2D, texture);-
637-
638 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);-
639 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);-
640 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);-
641 funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);-
642-
643 funcs->glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, d->req_size.width(), d->req_size.height(), 0,-
644 GL_RGBA, GL_UNSIGNED_BYTE, 0);-
645-
646 return texture;
never executed: return texture;
0
647}-
648-
649bool QGLPixelBuffer::hasOpenGLPbuffers()-
650{-
651 return QGLFramebufferObject::hasOpenGLFramebufferObjects();
never executed: return QGLFramebufferObject::hasOpenGLFramebufferObjects();
0
652}-
653-
654QT_END_NAMESPACE-
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