source: trunk/src/opengl/qgl_x11egl.cpp@ 815

Last change on this file since 815 was 769, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.3 sources from branches/vendor/nokia/qt.
File size: 26.6 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtOpenGL module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
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23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
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31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
36** If you have questions regarding the use of this file, please contact
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38** $QT_END_LICENSE$
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40****************************************************************************/
41
42#include "qgl.h"
43#include <private/qt_x11_p.h>
44#include <private/qpixmap_x11_p.h>
45#include <private/qimagepixmapcleanuphooks_p.h>
46#include <private/qgl_p.h>
47#include <private/qpaintengine_opengl_p.h>
48#include "qgl_egl_p.h"
49#include "qcolormap.h"
50#include <QDebug>
51
52
53QT_BEGIN_NAMESPACE
54
55
56bool qt_egl_setup_x11_visual(XVisualInfo &vi, EGLDisplay display, EGLConfig config,
57 const QX11Info &x11Info, bool useArgbVisual);
58
59/*
60 QGLTemporaryContext implementation
61*/
62
63class QGLTemporaryContextPrivate
64{
65public:
66 bool initialized;
67 Window window;
68 EGLContext context;
69 EGLSurface surface;
70 EGLDisplay display;
71};
72
73QGLTemporaryContext::QGLTemporaryContext(bool, QWidget *)
74 : d(new QGLTemporaryContextPrivate)
75{
76 d->initialized = false;
77 d->window = 0;
78 d->context = 0;
79 d->surface = 0;
80 int screen = 0;
81
82 d->display = eglGetDisplay(EGLNativeDisplayType(X11->display));
83
84 if (!eglInitialize(d->display, NULL, NULL)) {
85 qWarning("QGLTemporaryContext: Unable to initialize EGL display.");
86 return;
87 }
88
89 EGLConfig config;
90 int numConfigs = 0;
91 EGLint attribs[] = {
92 EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
93#ifdef QT_OPENGL_ES_2
94 EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
95#endif
96 EGL_NONE
97 };
98
99 eglChooseConfig(d->display, attribs, &config, 1, &numConfigs);
100 if (!numConfigs) {
101 qWarning("QGLTemporaryContext: No EGL configurations available.");
102 return;
103 }
104
105 XVisualInfo visualInfo;
106 XVisualInfo *vi;
107 int numVisuals;
108 EGLint id = 0;
109
110 eglGetConfigAttrib(d->display, config, EGL_NATIVE_VISUAL_ID, &id);
111 if (id == 0) {
112 // EGL_NATIVE_VISUAL_ID is optional and might not be supported
113 // on some implementations - we'll have to do it the hard way
114 QX11Info xinfo;
115 qt_egl_setup_x11_visual(visualInfo, d->display, config, xinfo, false);
116 } else {
117 visualInfo.visualid = id;
118 }
119 vi = XGetVisualInfo(X11->display, VisualIDMask, &visualInfo, &numVisuals);
120 if (!vi || numVisuals < 1) {
121 qWarning("QGLTemporaryContext: Unable to get X11 visual info id.");
122 return;
123 }
124
125 d->window = XCreateWindow(X11->display, RootWindow(X11->display, screen),
126 0, 0, 1, 1, 0,
127 vi->depth, InputOutput, vi->visual,
128 0, 0);
129
130 d->surface = eglCreateWindowSurface(d->display, config, (EGLNativeWindowType) d->window, NULL);
131
132 if (d->surface == EGL_NO_SURFACE) {
133 qWarning("QGLTemporaryContext: Error creating EGL surface.");
134 XFree(vi);
135 XDestroyWindow(X11->display, d->window);
136 return;
137 }
138
139 EGLint contextAttribs[] = {
140#ifdef QT_OPENGL_ES_2
141 EGL_CONTEXT_CLIENT_VERSION, 2,
142#endif
143 EGL_NONE
144 };
145 d->context = eglCreateContext(d->display, config, 0, contextAttribs);
146 if (d->context != EGL_NO_CONTEXT
147 && eglMakeCurrent(d->display, d->surface, d->surface, d->context))
148 {
149 d->initialized = true;
150 } else {
151 qWarning("QGLTemporaryContext: Error creating EGL context.");
152 eglDestroySurface(d->display, d->surface);
153 XDestroyWindow(X11->display, d->window);
154 }
155 XFree(vi);
156}
157
158QGLTemporaryContext::~QGLTemporaryContext()
159{
160 if (d->initialized) {
161 eglMakeCurrent(d->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
162 eglDestroyContext(d->display, d->context);
163 eglDestroySurface(d->display, d->surface);
164 XDestroyWindow(X11->display, d->window);
165 }
166}
167
168bool QGLFormat::hasOpenGLOverlays()
169{
170 return false;
171}
172
173void qt_egl_add_platform_config(QEglProperties& props, QPaintDevice *device)
174{
175 if (device->devType() == QInternal::Image)
176 props.setPixelFormat(static_cast<QImage *>(device)->format());
177}
178
179// Chooses the EGL config and creates the EGL context
180bool QGLContext::chooseContext(const QGLContext* shareContext)
181{
182 Q_D(QGLContext);
183
184 if (!device())
185 return false;
186
187 int devType = device()->devType();
188
189 // Get the display and initialize it.
190 if (d->eglContext == 0) {
191 d->eglContext = new QEglContext();
192 d->eglContext->setApi(QEgl::OpenGL);
193
194 // Construct the configuration we need for this surface.
195 QEglProperties configProps;
196 qt_egl_set_format(configProps, devType, d->glFormat);
197 qt_egl_add_platform_config(configProps, device());
198 configProps.setRenderableType(QEgl::OpenGL);
199
200#if We_have_an_EGL_library_which_bothers_to_check_EGL_BUFFER_SIZE
201 if (device()->depth() == 16 && configProps.value(EGL_ALPHA_SIZE) <= 0) {
202 qDebug("Setting EGL_BUFFER_SIZE to 16");
203 configProps.setValue(EGL_BUFFER_SIZE, 16);
204 configProps.setValue(EGL_ALPHA_SIZE, 0);
205 }
206
207 if (!d->eglContext->chooseConfig(configProps, QEgl::BestPixelFormat)) {
208 delete d->eglContext;
209 d->eglContext = 0;
210 return false;
211 }
212#else
213 QEgl::PixelFormatMatch matchType = QEgl::BestPixelFormat;
214 if ((device()->depth() == 16) && configProps.value(EGL_ALPHA_SIZE) == 0) {
215 configProps.setValue(EGL_RED_SIZE, 5);
216 configProps.setValue(EGL_GREEN_SIZE, 6);
217 configProps.setValue(EGL_BLUE_SIZE, 5);
218 configProps.setValue(EGL_ALPHA_SIZE, 0);
219 matchType = QEgl::ExactPixelFormat;
220 }
221
222 // Search for a matching configuration, reducing the complexity
223 // each time until we get something that matches.
224 if (!d->eglContext->chooseConfig(configProps, matchType)) {
225 delete d->eglContext;
226 d->eglContext = 0;
227 return false;
228 }
229#endif
230
231// qDebug("QGLContext::chooseContext() - using EGL config %d:", d->eglContext->config());
232// qDebug() << QEglProperties(d->eglContext->config()).toString();
233
234 // Create a new context for the configuration.
235 if (!d->eglContext->createContext
236 (shareContext ? shareContext->d_func()->eglContext : 0)) {
237 delete d->eglContext;
238 d->eglContext = 0;
239 return false;
240 }
241 d->sharing = d->eglContext->isSharing();
242 if (d->sharing && shareContext)
243 const_cast<QGLContext *>(shareContext)->d_func()->sharing = true;
244
245#if defined(EGL_VERSION_1_1)
246 if (d->glFormat.swapInterval() != -1 && devType == QInternal::Widget)
247 eglSwapInterval(d->eglContext->display(), d->glFormat.swapInterval());
248#endif
249 }
250
251 // Inform the higher layers about the actual format properties.
252 qt_egl_update_format(*(d->eglContext), d->glFormat);
253
254 return true;
255}
256
257void QGLWidget::resizeEvent(QResizeEvent *)
258{
259 Q_D(QGLWidget);
260 if (!isValid())
261 return;
262 makeCurrent();
263 if (!d->glcx->initialized())
264 glInit();
265 resizeGL(width(), height());
266 //handle overlay
267}
268
269const QGLContext* QGLWidget::overlayContext() const
270{
271 return 0;
272}
273
274void QGLWidget::makeOverlayCurrent()
275{
276 //handle overlay
277}
278
279void QGLWidget::updateOverlayGL()
280{
281 //handle overlay
282}
283
284//#define QT_DEBUG_X11_VISUAL_SELECTION 1
285
286bool qt_egl_setup_x11_visual(XVisualInfo &vi, EGLDisplay display, EGLConfig config, const QX11Info &x11Info, bool useArgbVisual)
287{
288 bool foundVisualIsArgb = useArgbVisual;
289
290#ifdef QT_DEBUG_X11_VISUAL_SELECTION
291 qDebug("qt_egl_setup_x11_visual() - useArgbVisual=%d", useArgbVisual);
292#endif
293
294 memset(&vi, 0, sizeof(XVisualInfo));
295
296 EGLint eglConfigColorSize;
297 eglGetConfigAttrib(display, config, EGL_BUFFER_SIZE, &eglConfigColorSize);
298
299 // Check to see if EGL is suggesting an appropriate visual id:
300 EGLint nativeVisualId;
301 eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &nativeVisualId);
302 vi.visualid = nativeVisualId;
303
304 if (vi.visualid) {
305 // EGL has suggested a visual id, so get the rest of the visual info for that id:
306 XVisualInfo *chosenVisualInfo;
307 int matchingCount = 0;
308 chosenVisualInfo = XGetVisualInfo(x11Info.display(), VisualIDMask, &vi, &matchingCount);
309 if (chosenVisualInfo) {
310#if !defined(QT_NO_XRENDER)
311 if (useArgbVisual) {
312 // Check to make sure the visual provided by EGL is ARGB
313 XRenderPictFormat *format;
314 format = XRenderFindVisualFormat(x11Info.display(), chosenVisualInfo->visual);
315 if (format->type == PictTypeDirect && format->direct.alphaMask) {
316#ifdef QT_DEBUG_X11_VISUAL_SELECTION
317 qDebug("Using ARGB X Visual ID (%d) provided by EGL", (int)vi.visualid);
318#endif
319 foundVisualIsArgb = true;
320 vi = *chosenVisualInfo;
321 }
322 else {
323 qWarning("Warning: EGL suggested using X visual ID %d for config %d, but this is not ARGB",
324 nativeVisualId, (int)config);
325 vi.visualid = 0;
326 }
327 } else
328#endif
329 {
330 if (eglConfigColorSize == chosenVisualInfo->depth) {
331#ifdef QT_DEBUG_X11_VISUAL_SELECTION
332 qDebug("Using opaque X Visual ID (%d) provided by EGL", (int)vi.visualid);
333#endif
334 vi = *chosenVisualInfo;
335 } else
336 qWarning("Warning: EGL suggested using X visual ID %d (%d bpp) for config %d (%d bpp), but the depths do not match!",
337 nativeVisualId, chosenVisualInfo->depth, (int)config, eglConfigColorSize);
338 }
339 XFree(chosenVisualInfo);
340 }
341 else {
342 qWarning("Warning: EGL suggested using X visual ID %d for config %d, but this seems to be invalid!",
343 nativeVisualId, (int)config);
344 vi.visualid = 0;
345 }
346 }
347
348 // If EGL does not know the visual ID, so try to select an appropriate one ourselves, first
349 // using XRender if we're supposed to have an alpha, then falling back to XGetVisualInfo
350
351#if !defined(QT_NO_XRENDER)
352 if (vi.visualid == 0 && useArgbVisual) {
353 // Try to use XRender to find an ARGB visual we can use
354 vi.screen = x11Info.screen();
355 vi.depth = 32; //### We might at some point (soon) get ARGB4444
356 vi.c_class = TrueColor;
357 XVisualInfo *matchingVisuals;
358 int matchingCount = 0;
359 matchingVisuals = XGetVisualInfo(x11Info.display(),
360 VisualScreenMask|VisualDepthMask|VisualClassMask,
361 &vi, &matchingCount);
362
363 for (int i = 0; i < matchingCount; ++i) {
364 XRenderPictFormat *format;
365 format = XRenderFindVisualFormat(x11Info.display(), matchingVisuals[i].visual);
366 if (format->type == PictTypeDirect && format->direct.alphaMask) {
367 vi = matchingVisuals[i];
368 foundVisualIsArgb = true;
369#ifdef QT_DEBUG_X11_VISUAL_SELECTION
370 qDebug("Using X Visual ID (%d) for ARGB visual as provided by XRender", (int)vi.visualid);
371#endif
372 break;
373 }
374 }
375 XFree(matchingVisuals);
376 }
377#endif
378
379 if (vi.visualid == 0) {
380 EGLint depth;
381 eglGetConfigAttrib(display, config, EGL_BUFFER_SIZE, &depth);
382 int err;
383 err = XMatchVisualInfo(x11Info.display(), x11Info.screen(), depth, TrueColor, &vi);
384 if (err == 0) {
385 qWarning("Warning: Can't find an X visual which matches the EGL config(%d)'s depth (%d)!",
386 (int)config, depth);
387 depth = x11Info.depth();
388 err = XMatchVisualInfo(x11Info.display(), x11Info.screen(), depth, TrueColor, &vi);
389 if (err == 0) {
390 qWarning("Error: Couldn't get any matching X visual!");
391 return false;
392 } else
393 qWarning(" - Falling back to X11 suggested depth (%d)", depth);
394 }
395#ifdef QT_DEBUG_X11_VISUAL_SELECTION
396 else
397 qDebug("Using X Visual ID (%d) for EGL provided depth (%d)", (int)vi.visualid, depth);
398#endif
399
400 // Don't try to use ARGB now unless the visual is 32-bit - even then it might stil fail :-(
401 if (useArgbVisual)
402 foundVisualIsArgb = vi.depth == 32; //### We might at some point (soon) get ARGB4444
403 }
404
405#ifdef QT_DEBUG_X11_VISUAL_SELECTION
406 qDebug("Visual Info:");
407 qDebug(" bits_per_rgb=%d", vi.bits_per_rgb);
408 qDebug(" red_mask=0x%x", vi.red_mask);
409 qDebug(" green_mask=0x%x", vi.green_mask);
410 qDebug(" blue_mask=0x%x", vi.blue_mask);
411 qDebug(" colormap_size=%d", vi.colormap_size);
412 qDebug(" c_class=%d", vi.c_class);
413 qDebug(" depth=%d", vi.depth);
414 qDebug(" screen=%d", vi.screen);
415 qDebug(" visualid=%d", vi.visualid);
416#endif
417 return foundVisualIsArgb;
418}
419
420void QGLWidget::setContext(QGLContext *context, const QGLContext* shareContext, bool deleteOldContext)
421{
422 Q_D(QGLWidget);
423 if (context == 0) {
424 qWarning("QGLWidget::setContext: Cannot set null context");
425 return;
426 }
427 if (!context->deviceIsPixmap() && context->device() != this) {
428 qWarning("QGLWidget::setContext: Context must refer to this widget");
429 return;
430 }
431
432 if (d->glcx)
433 d->glcx->doneCurrent();
434 QGLContext* oldcx = d->glcx;
435 d->glcx = context;
436
437 if (parentWidget()) {
438 // force creation of delay-created widgets
439 parentWidget()->winId();
440 if (parentWidget()->x11Info().screen() != x11Info().screen())
441 d_func()->xinfo = parentWidget()->d_func()->xinfo;
442 }
443
444 // If the application has set WA_TranslucentBackground and not explicitly set
445 // the alpha buffer size to zero, modify the format so it have an alpha channel
446 QGLFormat& fmt = d->glcx->d_func()->glFormat;
447 const bool tryArgbVisual = testAttribute(Qt::WA_TranslucentBackground) || fmt.alpha();
448 if (tryArgbVisual && fmt.alphaBufferSize() == -1)
449 fmt.setAlphaBufferSize(1);
450
451 bool createFailed = false;
452 if (!d->glcx->isValid()) {
453 // Create the QGLContext here, which in turn chooses the EGL config
454 // and creates the EGL context:
455 if (!d->glcx->create(shareContext ? shareContext : oldcx))
456 createFailed = true;
457 }
458 if (createFailed) {
459 if (deleteOldContext)
460 delete oldcx;
461 return;
462 }
463
464 if (d->glcx->windowCreated() || d->glcx->deviceIsPixmap()) {
465 if (deleteOldContext)
466 delete oldcx;
467 return;
468 }
469
470 bool visible = isVisible();
471 if (visible)
472 hide();
473
474 XVisualInfo vi;
475 QEglContext *eglContext = d->glcx->d_func()->eglContext;
476 bool usingArgbVisual = qt_egl_setup_x11_visual(vi, eglContext->display(), eglContext->config(),
477 x11Info(), tryArgbVisual);
478
479 XSetWindowAttributes a;
480
481 Window p = RootWindow(x11Info().display(), x11Info().screen());
482 if (parentWidget())
483 p = parentWidget()->winId();
484
485 QColormap colmap = QColormap::instance(vi.screen);
486 a.background_pixel = colmap.pixel(palette().color(backgroundRole()));
487 a.border_pixel = colmap.pixel(Qt::black);
488
489 unsigned int valueMask = CWBackPixel|CWBorderPixel;
490 if (usingArgbVisual) {
491 a.colormap = XCreateColormap(x11Info().display(), p, vi.visual, AllocNone);
492 valueMask |= CWColormap;
493 }
494
495 Window w = XCreateWindow(x11Info().display(), p, x(), y(), width(), height(),
496 0, vi.depth, InputOutput, vi.visual, valueMask, &a);
497
498 if (deleteOldContext)
499 delete oldcx;
500 oldcx = 0;
501
502 create(w); // Create with the ID of the window we've just created
503
504
505 // Create the EGL surface to draw into.
506 QGLContextPrivate *ctxpriv = d->glcx->d_func();
507 ctxpriv->eglSurface = ctxpriv->eglContext->createSurface(this);
508 if (ctxpriv->eglSurface == EGL_NO_SURFACE) {
509 delete ctxpriv->eglContext;
510 ctxpriv->eglContext = 0;
511 return;
512 }
513
514 d->eglSurfaceWindowId = w; // Remember the window id we created the surface for
515
516 if (visible)
517 show();
518
519 XFlush(X11->display);
520 d->glcx->setWindowCreated(true);
521}
522
523void QGLWidgetPrivate::init(QGLContext *context, const QGLWidget* shareWidget)
524{
525 Q_Q(QGLWidget);
526
527 initContext(context, shareWidget);
528
529 if(q->isValid() && glcx->format().hasOverlay()) {
530 //no overlay
531 qWarning("QtOpenGL ES doesn't currently support overlays");
532 }
533}
534
535void QGLWidgetPrivate::cleanupColormaps()
536{
537}
538
539const QGLColormap & QGLWidget::colormap() const
540{
541 return d_func()->cmap;
542}
543
544void QGLWidget::setColormap(const QGLColormap &)
545{
546}
547
548// Re-creates the EGL surface if the window ID has changed or if force is true
549void QGLWidgetPrivate::recreateEglSurface(bool force)
550{
551 Q_Q(QGLWidget);
552
553 Window currentId = q->winId();
554
555 if ( force || (currentId != eglSurfaceWindowId) ) {
556 // The window id has changed so we need to re-create the EGL surface
557 QEglContext *ctx = glcx->d_func()->eglContext;
558 EGLSurface surface = glcx->d_func()->eglSurface;
559 if (surface != EGL_NO_SURFACE)
560 ctx->destroySurface(surface); // Will force doneCurrent() if nec.
561 surface = ctx->createSurface(q);
562 if (surface == EGL_NO_SURFACE)
563 qWarning("Error creating EGL window surface: 0x%x", eglGetError());
564 glcx->d_func()->eglSurface = surface;
565
566 eglSurfaceWindowId = currentId;
567 }
568}
569
570// Selects which configs should be used
571EGLConfig Q_OPENGL_EXPORT qt_chooseEGLConfigForPixmap(bool hasAlpha, bool readOnly)
572{
573 // Cache the configs we select as they wont change:
574 static EGLConfig roPixmapRGBConfig = 0;
575 static EGLConfig roPixmapRGBAConfig = 0;
576 static EGLConfig rwPixmapRGBConfig = 0;
577 static EGLConfig rwPixmapRGBAConfig = 0;
578
579 EGLConfig* targetConfig;
580
581 if (hasAlpha) {
582 if (readOnly)
583 targetConfig = &roPixmapRGBAConfig;
584 else
585 targetConfig = &rwPixmapRGBAConfig;
586 }
587 else {
588 if (readOnly)
589 targetConfig = &roPixmapRGBConfig;
590 else
591 targetConfig = &rwPixmapRGBConfig;
592 }
593
594 if (*targetConfig == 0) {
595 QEglProperties configAttribs;
596 configAttribs.setValue(EGL_SURFACE_TYPE, EGL_PIXMAP_BIT);
597 configAttribs.setRenderableType(QEgl::OpenGL);
598 if (hasAlpha)
599 configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGBA, EGL_TRUE);
600 else
601 configAttribs.setValue(EGL_BIND_TO_TEXTURE_RGB, EGL_TRUE);
602
603 // If this is going to be a render target, it needs to have a depth, stencil & sample buffer
604 if (!readOnly) {
605 configAttribs.setValue(EGL_DEPTH_SIZE, 1);
606 configAttribs.setValue(EGL_STENCIL_SIZE, 1);
607 configAttribs.setValue(EGL_SAMPLE_BUFFERS, 1);
608 }
609
610 EGLint configCount = 0;
611 do {
612 eglChooseConfig(QEglContext::display(), configAttribs.properties(), targetConfig, 1, &configCount);
613 if (configCount > 0) {
614 // Got one
615 qDebug() << "Found an" << (hasAlpha ? "ARGB" : "RGB") << (readOnly ? "readonly" : "target" )
616 << "config (" << int(*targetConfig) << ") to create a pixmap surface:";
617
618// QEglProperties configProps(*targetConfig);
619// qDebug() << configProps.toString();
620 break;
621 }
622 qWarning("choosePixmapConfig() - No suitible config found, reducing requirements");
623 } while (configAttribs.reduceConfiguration());
624 }
625
626 if (*targetConfig == 0)
627 qWarning("choosePixmapConfig() - Couldn't find a suitable config");
628
629 return *targetConfig;
630}
631
632bool Q_OPENGL_EXPORT qt_createEGLSurfaceForPixmap(QPixmapData* pmd, bool readOnly)
633{
634 Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
635 QX11PixmapData* pixmapData = static_cast<QX11PixmapData*>(pmd);
636
637 bool hasAlpha = pixmapData->hasAlphaChannel();
638
639 EGLConfig pixmapConfig = qt_chooseEGLConfigForPixmap(hasAlpha, readOnly);
640
641 QEglProperties pixmapAttribs;
642
643 // If the pixmap can't be bound to a texture, it's pretty useless
644 pixmapAttribs.setValue(EGL_TEXTURE_TARGET, EGL_TEXTURE_2D);
645 if (hasAlpha)
646 pixmapAttribs.setValue(EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGBA);
647 else
648 pixmapAttribs.setValue(EGL_TEXTURE_FORMAT, EGL_TEXTURE_RGB);
649
650 EGLSurface pixmapSurface;
651 pixmapSurface = eglCreatePixmapSurface(QEglContext::display(),
652 pixmapConfig,
653 (EGLNativePixmapType) pixmapData->handle(),
654 pixmapAttribs.properties());
655// qDebug("qt_createEGLSurfaceForPixmap() created surface 0x%x for pixmap 0x%x",
656// pixmapSurface, pixmapData->handle());
657 if (pixmapSurface == EGL_NO_SURFACE) {
658 qWarning() << "Failed to create a pixmap surface using config" << (int)pixmapConfig
659 << ":" << QEglContext::errorString(eglGetError());
660 return false;
661 }
662
663 static bool doneOnce = false;
664 if (!doneOnce) {
665 // Make sure QGLTextureCache is instanciated so it can install cleanup hooks
666 // which cleanup the EGL surface.
667 QGLTextureCache::instance();
668 doneOnce = true;
669 }
670
671 Q_ASSERT(sizeof(Qt::HANDLE) >= sizeof(EGLSurface)); // Just to make totally sure!
672 pixmapData->gl_surface = (Qt::HANDLE)pixmapSurface;
673 QImagePixmapCleanupHooks::enableCleanupHooks(pixmapData); // Make sure the cleanup hook gets called
674
675 return true;
676}
677
678
679QGLTexture *QGLContextPrivate::bindTextureFromNativePixmap(QPixmapData* pd, const qint64 key,
680 QGLContext::BindOptions options)
681{
682 Q_Q(QGLContext);
683
684 // The EGL texture_from_pixmap has no facility to invert the y coordinate
685 if (!(options & QGLContext::CanFlipNativePixmapBindOption))
686 return 0;
687
688 Q_ASSERT(pd->classId() == QPixmapData::X11Class);
689
690 static bool checkedForTFP = false;
691 static bool haveTFP = false;
692
693 if (!checkedForTFP) {
694 // Check for texture_from_pixmap egl extension
695 checkedForTFP = true;
696 if (eglContext->hasExtension("EGL_NOKIA_texture_from_pixmap") ||
697 eglContext->hasExtension("EGL_EXT_texture_from_pixmap"))
698 {
699 qDebug("Found texture_from_pixmap EGL extension!");
700 haveTFP = true;
701 }
702 }
703
704 if (!haveTFP)
705 return 0;
706
707 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pd);
708
709 bool hasAlpha = pixmapData->hasAlphaChannel();
710
711 // Check to see if the surface is still valid
712 if (pixmapData->gl_surface &&
713 hasAlpha != (pixmapData->flags & QX11PixmapData::GlSurfaceCreatedWithAlpha))
714 {
715 // Surface is invalid!
716 destroyGlSurfaceForPixmap(pixmapData);
717 }
718
719 if (pixmapData->gl_surface == 0) {
720 bool success = qt_createEGLSurfaceForPixmap(pixmapData, true);
721 if (!success) {
722 haveTFP = false;
723 return 0;
724 }
725 }
726
727 Q_ASSERT(pixmapData->gl_surface);
728
729 GLuint textureId;
730 glGenTextures(1, &textureId);
731 glBindTexture(GL_TEXTURE_2D, textureId);
732
733 // bind the egl pixmap surface to a texture
734 EGLBoolean success;
735 success = eglBindTexImage(eglContext->display(), (EGLSurface)pixmapData->gl_surface, EGL_BACK_BUFFER);
736 if (success == EGL_FALSE) {
737 qWarning() << "eglBindTexImage() failed:" << eglContext->errorString(eglGetError());
738 eglDestroySurface(eglContext->display(), (EGLSurface)pixmapData->gl_surface);
739 pixmapData->gl_surface = (Qt::HANDLE)EGL_NO_SURFACE;
740 haveTFP = false;
741 return 0;
742 }
743
744 QGLTexture *texture = new QGLTexture(q, textureId, GL_TEXTURE_2D, options);
745 pixmapData->flags |= QX11PixmapData::InvertedWhenBoundToTexture;
746
747 // We assume the cost of bound pixmaps is zero
748 QGLTextureCache::instance()->insert(q, key, texture, 0);
749
750 glBindTexture(GL_TEXTURE_2D, textureId);
751 return texture;
752}
753
754void QGLContextPrivate::destroyGlSurfaceForPixmap(QPixmapData* pmd)
755{
756 Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
757 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
758 if (pixmapData->gl_surface) {
759 EGLBoolean success;
760 success = eglDestroySurface(QEglContext::display(), (EGLSurface)pixmapData->gl_surface);
761 if (success == EGL_FALSE) {
762 qWarning() << "destroyGlSurfaceForPixmap() - Error deleting surface: "
763 << QEglContext::errorString(eglGetError());
764 }
765 pixmapData->gl_surface = 0;
766 }
767}
768
769void QGLContextPrivate::unbindPixmapFromTexture(QPixmapData* pmd)
770{
771 Q_ASSERT(pmd->classId() == QPixmapData::X11Class);
772 QX11PixmapData *pixmapData = static_cast<QX11PixmapData*>(pmd);
773 if (pixmapData->gl_surface) {
774 EGLBoolean success;
775 success = eglReleaseTexImage(QEglContext::display(),
776 (EGLSurface)pixmapData->gl_surface,
777 EGL_BACK_BUFFER);
778 if (success == EGL_FALSE) {
779 qWarning() << "unbindPixmapFromTexture() - Unable to release bound texture: "
780 << QEglContext::errorString(eglGetError());
781 }
782 }
783}
784
785QT_END_NAMESPACE
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