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romanshuvalov's avatar
romanshuvalov
Explorer
4 years ago

maxSwapchainSampleCount is 1 on Quest 2? No multisample swapchain images?

With deprecated Oculus API, it was possible to submit multisample textures.   Now, with OpenXR, xrEnumerateViewConfigurationViews() tells that maxSwapchainSampleCount is 1. It means it's impossible...
OpenXR
Quest
Quest 2
romanshuvalov's avatar
romanshuvalov
Explorer
4 years ago

Using native OpenXR? After xrEnumerateViewConfigurationViews() call, what have you got in ((XrViewConfigurationView) view).maxSwapchainSampleCount?

 

(I got 4 on PC and 1 on native Quest 2)

a.a.babichev's avatar
a.a.babichev
Explorer
4 years ago

I'm using native OpenXR via Rust wrapper.  maxSwapchainSampleCount equals 1.

  • romanshuvalov's avatar
    romanshuvalov
    Explorer
    4 years ago

    You are right, multisample swapchain is in fact supported (I messed up with glFramebufferTexture2DMultisampleEXT).

     

    However, maxSwapchainSampleCount=1 means we must not set XrSwapchainCreateInfo.sampleCount to values higher than 1. But we can do it and it works. Looks like a bug in API implementation, system should return maxSwapchainSampleCount=4 instead of 1.

    • a.a.babichev's avatar
      a.a.babichev
      Explorer
      4 years ago

      I totally agree.  Vulkan validation layer doesn't complain that samples count greater than maxSwapchainSampleCount.