EGLSurface QEgl::createSurface(QPaintDevice *device, EGLConfig cfg, const QEglProperties *properties)
{
// Create the native drawable for the paint device.
int devType = device->devType();
EGLNativePixmapType pixmapDrawable = 0;
EGLNativeWindowType windowDrawable = 0;
bool ok;
if (devType == QInternal::Pixmap) {
pixmapDrawable = nativePixmap(static_cast<QPixmap *>(device));
ok = (pixmapDrawable != 0);
} else if (devType == QInternal::Widget) {
windowDrawable = nativeWindow(static_cast<QWidget *>(device));
ok = (windowDrawable != 0);
} else {
ok = false;
}
if (!ok) {
qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
return EGL_NO_SURFACE;
}
// Create the EGL surface to draw into, based on the native drawable.
const int *props;
if (properties)
props = properties->properties();
else
props = 0;
EGLSurface surf;
if (devType == QInternal::Widget)
surf = eglCreateWindowSurface(QEgl::display(), cfg, windowDrawable, props);
else
surf = eglCreatePixmapSurface(QEgl::display(), cfg, pixmapDrawable, props);
if (surf == EGL_NO_SURFACE) {
qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
}
return surf;
}
EGLSurface QEgl::createSurface(QPaintDevice *device, EGLConfig cfg, const QEglProperties *properties)
{
// Create the native drawable for the paint device.
int devType = device->devType();
EGLNativePixmapType pixmapDrawable = 0;
EGLNativeWindowType windowDrawable = 0;
bool ok;
if (devType == QInternal::Pixmap) {
pixmapDrawable = nativePixmap(static_cast<QPixmap *>(device));
ok = (pixmapDrawable != 0);
} else if (devType == QInternal::Widget) {
windowDrawable = nativeWindow(static_cast<QWidget *>(device));
ok = (windowDrawable != 0);
} else {
ok = false;
}
if (!ok) {
qWarning("QEglContext::createSurface(): Cannot create the native EGL drawable");
return EGL_NO_SURFACE;
}
// Create the EGL surface to draw into, based on the native drawable.
const int *props;
if (properties)
props = properties->properties();
else
props = 0;
EGLSurface surf = EGL_NO_SURFACE;
#ifdef Q_OS_SYMBIAN
// On Symbian there might be situations (especially on 32MB GPU devices)
// where Qt is trying to create EGL surface while some other application
// is still holding all available GPU memory but is about to release it
// soon. For an example when exiting native video recorder and going back to
// Qt application behind it. Video stack tear down takes some time and Qt
// app might be too quick in reserving its EGL surface and thus running out
// of GPU memory right away. So if EGL surface creation fails due to bad
// alloc, let's try recreating it four times within ~1 second if needed.
// This strategy gives some time for video recorder to tear down its stack
// and a chance to Qt for creating a valid surface.
// If the surface is still failing however, we don't keep the app blocked.
static int tries = 4;
if (tries <= 0)
tries = 1;
while (tries-- > 0) {
if (devType == QInternal::Widget)
surf = eglCreateWindowSurface(QEgl::display(), cfg, windowDrawable, props);
else
surf = eglCreatePixmapSurface(QEgl::display(), cfg, pixmapDrawable, props);
if (surf == EGL_NO_SURFACE) {
EGLint error = eglGetError();
if (error == EGL_BAD_ALLOC) {
if (tries > 0) {
User::After(1000 * 250); // 250ms
continue;
}
}
qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", error);
S60->eglSurfaceCreationError = true;
} else {
tries = 4;
break;
}
}
#else
if (devType == QInternal::Widget)
surf = eglCreateWindowSurface(QEgl::display(), cfg, windowDrawable, props);
else
surf = eglCreatePixmapSurface(QEgl::display(), cfg, pixmapDrawable, props);
if (surf == EGL_NO_SURFACE) {
qWarning("QEglContext::createSurface(): Unable to create EGL surface, error = 0x%x", eglGetError());
}
#endif
return surf;
}
