overte-org
Camera correction might not be working correctly in OpenXR
It looks like camera correction that is normally added after frame batches were generated is not applied correctly on OpenXR. This shows as view jumping around a lot while user looks around in VR. It's less visible in Appimage, and very visible in local builds. It looks like it's much better in mirrors than in regular non-mirrored environment.
For me the appimage version runs pretty much perfectly in OpenXR, while a local build I made is very jerky.
OpenXrDisplayPlugin::updatePresentPose() is empty on OpenXR, so maybe that's related?
To debug this we should try slowing down or freezing render thread (which generates frame descriptions) and then see if camera position for present thread (which does the actual rendering) updates correctly.
To make the issue more visible, add wait statement to render loop:
void RenderEventHandler::render() {
if (_checkCall()) {
_lastTimeRendered.start();
_renderCall();
usleep(1000000);
}
}
On OpenVR it will still be possible to move head around, with updated 3D view. On OpenXR frames will be rendered, but camera position will not be updated.