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stenyak's avatar
stenyak
Protege
2 years ago

Nullpointer crash during xrCreateSession inside oculus drivers (LibOVRRT64_1.dll) using OpenXR on PC

Hi, I've integrated OpenXR in my custom game engine. It works fine when I use my Oculus headset using SteamVR as the OpenXR runtime. However, when using Oculus as the OpenXR runtime, I get a null...
OpenXR
openxr xrcreatesession
OVR
PCVR
johnkearney's avatar
johnkearney
Meta Employee
2 years ago

For anybody who comes to this issue in future - stenyak and I investigated this issue and found it to be a problem in the application code. The crash happened in the Vulkan Loader because the data from `xrGetVulkanDeviceExtensionsKHR` was not being used when creating the VkDevice.

Thanks,
John

stenyak's avatar
stenyak
Protege
2 years ago

Thanks John, was about to come here to post the solution myself!

So I was indeed not loading all the required Vulkan extensions, which made the runtime unable to work as intended, leading to that crash.