Developers - mbucchia/Pimax-OpenXR GitHub Wiki
PimaxXR can be used to develop OpenXR applications without going through SteamVR.
PimaxXR is not an officially conformant runtime. It cannot be called "conformant" nor use the OpenXR trademark and logo. It does pass the majority of Khronos OpenXR Conformance Test Suite. While the developers of PimaxXR wish to claim official conformance, the Khronos group requires an adopter fee of $30,000 for the conformance submission, which is not affordable for the development team.
The following features/extensions are supported:
| Feature | Extension(s) | Notes/Limitations |
|---|---|---|
| Projection layers | - | - |
| Quad layers | - | [1] |
| Depth submission | XR_KHR_composition_layer_depth |
- |
| Direct3D 11 | XR_KHR_D3D11_enable |
- |
| Direct3D 12 | XR_KHR_D3D12_enable |
- |
| Vulkan | XR_KHR_vulkan_enable, XR_KHR_vulkan_enable2 |
[2] |
| OpenGL | XR_KHR_opengl_enable |
- |
| Hidden area mesh | XR_KHR_visibility_mask |
[3] |
| Parallel projection | - | - |
| Stage reference space | - | - |
| Motion controllers | - | [4] |
| Finger sensing (Valve Index) | XR_EXT_hand_tracking |
- |
| Hand tracking module | XR_EXT_hand_tracking |
[5] |
| Crystal eye tracking | XR_EXT_eye_gaze_interaction |
- |
| Droolon eye tracking module | XR_EXT_eye_gaze_interaction |
- |
| Playspace guardian | - | [6] |
| Mirror window | - | - |
| 32-bit support | - | - |
| Timestamp conversion | XR_KHR_win32_convert_performance_counter_time |
- |
| Advanced tracing | - | [7] |
| Debugging with RenderDoc | - | - |
[1] XrCompositionLayerQuad::eyeVisibility is ignored and assumed to be XR_EYE_VISIBILITY_BOTH.
[2] When using XR_KHR_vulkan_enable, care must be taken by the application to enable timeline semaphores (append a VkPhysicalDeviceTimelineSemaphoreFeatures struct to the call to vkCreateDevice()).
[3] Only XR_VISIBILITY_MASK_TYPE_HIDDEN_TRIANGLE_MESH_KHR is supported. Other meshes will be empty.
[4] Tested with HTC Vive, Valve Index and Pimax Crystal controllers.
[5] Provided through Ultraleap API layer.
[6] Playspace definition is limited to a circular shape.
[7] See Capturing debug traces.