Hi, I'm afraid this is the wrong mailing list or venue but have to start from somewhere.
I just tested my Swing app using OpenJDK 11.0.1 on Raspberry Pi 4 / Manjaro and it worked great. I then enabled the OpenGL pipeline with -Dsun.java2d.opengl=True and console confirmed that the pipeline was enabled. The rending now fails as follows: During the initial rendering of Swing components (it is a bit slow so I can see what happens) a lot of extra black follows or preceeds rendering of every Swing component. When the rendering is complete the whole window goes black except a white border around an OpenGL canvas component. As I move the cursor around the component under the cursor flashes correctly rendered but remains black. If I resize the window, the whole window flashes briefly (much much faster that what normal rendering takes place) with the correct rendering but then goes black again. I tried this with X11 and Wayland enabled KDE (if it makes a difference, perhaps Java2D rendring is not affected by the Desktop rendering.... Is this a driver issue? If so where should I turn next to ask questions like what driver I'm using and whom to report the problem? I'm rather new to Linux / Raspberry so the driver / open source bug reporting is kind of unclear to me... wbr Kusti
