Darker image issue on Uniy builds

Gaming and Visualization Technologies XR – VR/AR/MR CloudXR (VR and AR Streaming)
1

Hello,

I am experiencing a significant brightness and contrast difference between the streamed image and the reference image. When viewing the same scene via Meta Quest Link or on the PC monitor, the image looks correct. However, when streaming through CloudXR.js (Runtime 6.2.0) to a Meta Quest 3 headset, the image appears noticeably darker and has reduced contrast.

Setup:

  • Unity URP (Forward Renderer, Linear color space, HDR off)
  • CloudXR.js Runtime 6.2.0
  • Meta Quest 3
  • OpenXR Color Format: 8 bits per channel (LDR, default)
  • No custom Renderer Features
  • Post-processing enabled on renderer with PostProcessData assigned

Things I have already tried without success:

  • Switching Color Space to Gamma
  • Disabling HDR on both URP Asset and Camera
  • Setting Intermediate Texture to Always
  • Adding a Global Volume with Tonemapping (ACES and Neutral) and Color Adjustments
  • Assigning a Volume Profile to the URP Asset
  • Enabling Fast sRGB/Linear Conversions
  • Changing Color Submission Mode (no explicit sRGB option available in the Color Formats dropdown)

The monitor output and Meta Quest Link both look correct, so the rendering pipeline itself appears fine. The issue seems to be in how the final frame is submitted to the OpenXR runtime and subsequently captured by CloudXR. Any guidance on the correct color format or submission mode for CloudXR Runtime 6.2.0 would be appreciated.

2

Good day, @burakkaraceylan ,

Sorry to hear about this. I suspect this is related to some color issues in older Chromium/Android builds that affected Quest.

Please try this:

  • In the Quest Browser, on the client page
  • Before you click Connect
  • On the right side of the page, scroll down to the bottom
  • Find the drop-down box labeled Quest Color Workaround
  • Try both versions of this setting

Please let me know whether one of these results in better color accuracy. In particular, if disabling this setting gets you better color, then please also let me know what your Quest Browser Chromium version is via chrome://version from within the Quest HMD; the workaround may no longer be needed.

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