Goal: With Qt3D (C++), render my scene offscreen, use render capture on it, and save image to disk.
With my Qt3DWindow-based solution the scene looks fine and I can do the render capture part (on macOS anyways - Windows doesn't work for me - https://bugreports.qt.io/browse/QTBUG-61223 ). Now I need to be able to do it offscreen (without the window open). I thought this was going to be as simple as setting a QOffscreenSurface as my forward renderer surface - something like: QOffscreenSurface *surface = new QOffscreenSurface; surface->create(); Qt3DExtras::QForwardRenderer *forwardRenderer = new Qt3DExtras::QForwardRenderer; forwardRenderer->setSurface( surface ); forwardRenderer->setExternalRenderTargetSize( QSize( 800, 600 ) ); qDebug() << surface->format() << surface->size() << surface->isValid(); While this gives me a valid surface and the format is correct, its size is always (1,1) and the render capture gives me images of that size. How do I set the size of the QOffscreenSurface? Or am I going about this the wrong way? (It would be nice to have a class like the Qt3DWindow one specifically for offscreen rendering.) --- Andy Maloney // https://asmaloney.com twitter ~ @asmaloney <https://twitter.com/asmaloney>
_______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
