With the current DRM/KMS support from picamera2 you can't.
DRM/KMS supports passing the same buffer to more than one plane, and assigning those planes to different CRTCs (displays), but it requires userspace to set that up. You then also get a few gotchas for situations like if the displays are running at different refresh rates.
It is a solvable problem, but would take some time (partly in creating a mechanism to configure it all). I'd suggest you create an issue on https://github.com/raspberrypi/picamera2/issues so that it doesn't get lost in the forums. Please include a link back to this forum thread.
DRM/KMS supports passing the same buffer to more than one plane, and assigning those planes to different CRTCs (displays), but it requires userspace to set that up. You then also get a few gotchas for situations like if the displays are running at different refresh rates.
It is a solvable problem, but would take some time (partly in creating a mechanism to configure it all). I'd suggest you create an issue on https://github.com/raspberrypi/picamera2/issues so that it doesn't get lost in the forums. Please include a link back to this forum thread.
Statistics: Posted by 6by9 — Thu Jul 18, 2024 3:18 pm