Supported features

	Native SDK	OpenXR	Unity XR SDK	Unreal OpenXR	OpenVR driver
Supported graphics APIs	DX11, DX12, OpenGL, Vulkan 5)	DX11, DX12, OpenGL, Vulkan	DX11	DX11	DX11, DX12, OpenGL, Vulkan
Human-eye resolution	Yes	Yes	Yes	Yes	No
Eye tracking	Yes	Yes	Yes	Yes	No
Eye tracking parameters	Yes	No	Yes	No	No
Eye camera datastream	Yes	No	No	No	No
Mixed reality (MR)	Yes	Yes	Yes	Yes	Yes 1)
MR environment reflections	Yes	No	Yes	No	No
MR post-process shaders	Yes (experimental)	No	No	No	No
MR datastream	Yes	No	Yes	No	No
Chroma keying	Yes	Yes 2)	Yes	Yes 2)	Yes 2)
Varjo Markers	Yes	Yes	Yes	Yes	No
Headset buttons	Yes	No	Yes	No	No
Depth buffer submission	Yes	Yes	Yes	Yes	Yes
Velocity buffer submission	Yes	No	No	No	No
Multi-app support	Yes	No	Yes	No	No
Support for multiple layers	Yes	Yes 3)	No	No	Yes
Blend control mask layer	Yes	No	Yes	No	No
Occlusion mask	Yes	Yes	Yes	Yes	Yes
Instanced rendering 4)	Yes	Yes	Yes	No	Yes 1x2
Foveated rendering	Yes	Yes	Yes	Yes	No
SLI-compatible	Yes	No	No	No	Yes

1) Using multi-app
2) Using Varjo Base or multi-app
3) Less MR flexibility compared to Varjo Native
4) 1x4: Render one quad pass, 2x2: Render two stereo passes, 1x2: Render one stereo pass.
5) Vulkan does not support passing textures back to the client (datastreams and mirror) or mr post-process shaders.