Posted by Tobi Delbruck on Feb 09, 2024; 6:58am
URL: https://forum.jogamp.org/Corrupted-frame-or-transform-Mac-OSX-OK-on-win-linux-tp4043303.html

Our project https://jaerproject.org has been using JOGL for about 10 years now very successfully and happily, but we always had a problem on Mac/OSX with rendering of the event camera output, where alternating frames were showing up as weirdly transformed with black background. Now finally we bought a mac mini to try to debug the problem but still cannot figure it out.  This follows with the wonderful release of JOGL2.5.0 that finally allowed us to update jaer to use Java 21 and netbeans 20 and make real install4j installers for it.

A rendered frame should look like this (here I zoomed out a lot to show the context better):
The scene is from a recording with DAVIS frame event camera of spinning coins



But every other frame looks like this on Mac OSX machine:



The problem is shown in the 2 videos in this folder: https://www.dropbox.com/scl/fo/6vhxmwqv85btlpfwcgqdo/h?rlkey=oald0p3wixny5y6z5o3q3m3l3&dl=0

These videos are screen capture videos of the behavior on OSX and Windows.
In each video I put breakpoints on the display() method and the internal JOGL swapBuffers calls.

I don't know if it some handing of the frame buffer objects in our code or the way we make textures or something else.
The code is really complicated for me to follow but I can fully appreciate Sven's comments about how handling the FBO is a PIA on OSX :-)

This folder also has the jogamp debug logs



If anyone has some idea about what is going on it would very helpful.