Rectus

The functions `IVRCompositor::GetMirrorTextureD3D11` and `IVRTrackedCamera::GetVideoStreamTextureD3D11` have no DirectX 12 equivalent, only variants for DirectX 11 and OpenGL. I'm using them with Unreal Engine, and it has performance issues when using...

While an OpenXR scene application is running, the tracking space is universally set to `TrackingUniverseRawAndUncalibrated`. This has consequences both for running OpenVR side-by-side in the same application in background or...

IVRSystem::GetProjectionMatrix() memory leak when called repeadedly with varying parameters

2

If `IVRSystem::GetProjectionMatrix()` is called with varying near and far plane configurations, vrcompositor.exe will use up more and more memory, and never return it. When it is called every frame with...

Tracked camera frame header is incomplete on HTC Vive

1

When calling `IVRTrackedCamera::GetVideoStreamFrameBuffer` while using the original HTC Vive with the mono camera, several fields in the returned `CameraVideoStreamFrameHeader_t` do not get filled correctly. The `ulFrameExposureTime` field is set to...

Passthrough camera projection matrix

13

I'm trying to project the images from the valve index passthrough cameras to the HMD view, but I have trouble getting the image projection to match up with the room...

The new driver API documentation is very nice, but both it and the header file are missing documentation for the `IVRCameraComponent` class. It would be nice to have documentation and...

Attempting to retrieve the passthrough camera framebuffer with `IVRTrackedCamera::GetVideoStreamFrameBuffer()` while the scene application is rendering with Vulkan causes the application either to crash with an invalid memory access inside the...

Using the same action for both hands

8

Looking at the input bindings for games like Half-Life: Alyx, and for every action that can be triggered by both hands, the same action is bound to both hands instead...

Integration into existing XR components

6

I just released a simple Vive tracker plugin (https://github.com/Rectus/UE4OpenXRViveTrackerPlugin) that uses the existing motion controller component in the XR system to provide the tracker pose. It also works out-of-the-box with...

Documentation error for `XR_VARJO_composition_layer_depth_test`

1

In the documentation for the `XR_VARJO_composition_layer_depth_test` extension, under the New Structures heading, it says the `XrCompositionLayerDepthTestVARJO` structure can be chained to the `XrCompositionLayerProjectionView` structure. This contradicts the rest of the...