Wayland clients communicate with a Wayland compositor via the 'Wayland protocol'. A Wayland 'server' (or 'compositor') is then responsible for (i) presenting (or 'compositing') the resulting window surfaces for display, (ii) providing a window management system to the user (typically involving UX widgets like task switchers, app launchers, and lock screens), and (iii) receiving and arbitrating among different inputs (keyboard presses, mouse clicks, etc). Unlike X11, Wayland programs (or 'clients') are 100% responsible for rendering their own window contents. Wayland is a modern compositor protocol which aims to replace X11. In order to integrate Haskell code with Godot, we've had to generate our own bindings ( SimulaVR/godot-haskell).Ģ Wayland Compositor 2.1 Wayland Protocol The integration of everything is handled via Haskell code in our main repository ( SimulaVR/Simula). Our program connects to VR hardware via monado, which is an open-source implementation of the OpenXR API. Gdwlroots ( SimulaVR/gdwlroots) provides a Godot interface for this infrastructure. For our window management, we use a fork of Drew Devault's wlroots ( SimulaVR/wlroots), which provides lots of the Wayland infrastructure we've assembled into our VR compositor. For our rendering system, we use a fork of Godot ( SimulaVR/godot), which is an open-source game engine written in C++. A rough formula, in terms of our repositories, is Whether you're interested in contributing or simply curious about how our open-source software fits together, this post sketches out how our principal repositories link together:Īt a high level, Simula is a Wayland compositor inserted into a game engine and managed via Haskell glue. Anyway I'll report back if I find a more reliable solution.Someone recently asked us for a high-level overview of Simula's software stack.

Kinda spent on trying to solve this problem tonight. Keeping Chrome completely closed seems to can't say definitively, will have to look at it more when I'm less tired. I don't know why ending that process stopped the judders momentarily, but sure enough they came back.

Crossing my fingers that this was the main culprit, and that the issue doesn't pop up again. Really hope this helps guys! I know how aggravating of an issue it is, believe me. For me, it seemed to instantly stop the application and compositor frame drops that I was seeing on that Oculus performance overlay. End that process, and see if the stuttering issue goes away. Second, and what seemed to fix my frame drop problems: Open task manager, scroll down under the Background Processes category, and see if you can find a process with an Nvidia logo called 'Stereo Vision Control Panel API Server' or something like that. Note that this step might not be necessary, but I've read in my online sleuthing that in the past at least, that enabled 3D vision was giving people stuttering. Hey guys, so I've been having this problem recently as well, but may have found a solution.įirst: Open up Nvidia control panel, go to 'Set up stereoscopic 3D,' and make sure it's disabled, i.e. This is probably an issue with oculus home 1.9.Įdit3: I enabled ASW and still get the compositor frame drops. I then downloaded Geforce Experience and updated all my drivers to the latest. I still got compositor frame drops from the default automatic Windows installed drivers. I reinstalled Oculus Home and a couple VR of games to test. I'm currently running Oculus Home 1.9 and Nvidia Driver 375.70Īny help would be appreciated, I believe the issue may be related to either the recent Oculus 1.9 update or the latest Nvidia driver update.Įdit: I rolled back my drivers to 368.81 and nothing changed.Įdit2: I completely reset Windows, formatting the drive and removing all software. Although the CPU is not up to minimum system spec I haven't had any issues so far and have had my rift since this May. I have a i5-4460 8GB of ram, a GTX 1070 and Windows 10 64bit. It happens every second like clockwork and is displayed as dropped compositor frames in the debugger.

Hey Oculus Forums, I recently started getting stuttering in my rift.

Oculus launch compositor