diff options
Diffstat (limited to 'src/opengl')
| -rw-r--r-- | src/opengl/qgl_mac.mm | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/opengl/qgl_mac.mm b/src/opengl/qgl_mac.mm index 66fe7d3..f023a97 100644 --- a/src/opengl/qgl_mac.mm +++ b/src/opengl/qgl_mac.mm @@ -697,9 +697,17 @@ void QGLContext::updatePaintDevice() QWidget *w = (QWidget *)d->paintDevice; NSView *view = qt_mac_nativeview_for(w); - // ideally we would use QWidget::isVisible(), but we get "invalid drawable" errors - if (![(NSWindow *)qt_mac_window_for(w) isVisible]) - return; + // Trying to attach the GL context to the NSView will fail with + // "invalid drawable" if done too soon, but we have to make sure + // the connection is made before the first paint event. Using + // the NSView do to this check fails as the NSView is visible + // before it's safe to connect, and using the NSWindow fails as + // the NSWindow will become visible after the first paint event. + // This leaves us with the QWidget, who's visible state seems + // to match the point in time when it's safe to connect. + if (!w || !w->isVisible()) + return; // Not safe to attach GL context to view yet + if ([static_cast<NSOpenGLContext *>(d->cx) view] != view && ![view isHidden]) [static_cast<NSOpenGLContext *>(d->cx) setView:view]; } else if (d->paintDevice->devType() == QInternal::Pixmap) { |