WebXR Post Processing Bloom not working

🌵 Needle Engine
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When building an experience for webar with image tracking and added bloom post-process, on Android the bloom effect does not work at all. Could you please give me instructions how i should set my Unity scene so i can see the bloom effect on Web Ar?

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Hi Julian,

To set up bloom post-processing in Unity for your WebXR experience, follow these instructions:

  1. Install Post-Processing Package: Make sure you have the Post-Processing Stack installed via the Unity Package Manager.

  2. Add Post-Processing Layer:

    • Attach the PostProcessLayer component to your camera.
    • Set the Layer to a dedicated layer for post-processing (e.g., “PostProcessing”).

  3. Create a Post-Processing Volume:

    • Right-click in your scene hierarchy, go to Volume, and create a new Global Volume.
    • Attach a PostProcessVolume component to this GameObject.
    • Make sure the Is Global checkbox is checked.

  4. Add Bloom Effect:

    • Inside your Post-Processing Volume, create a new Bloom effect by clicking Add Effect > Unity > Bloom.
    • Adjust the settings of the Bloom to your liking (e.g., threshold, intensity).

  5. Check Camera Settings:

    • Ensure your camera has the PostProcessLayer component enabled.
    • Set the Volume Layer to the layer you assigned in the Post-Processing Layer.

  6. Configure WebXR Settings:

    • Ensure that you have WebXR properly set up in your project.
    • Check your WebXR settings in the XR Plugin Management to ensure proper integration.

  7. Build and Test:

    • Make sure to test on the Android device with the WebAR platform.
    • Test with simple setups first (just a cube with bloom) to isolate the issue.

If the bloom effect still doesn’t appear, consider checking the performance settings and ensuring the browser and device support the necessary WebXR features.

Please provide further information on your Unity version and which version of Needle Engine you’re using for more tailored support. Additionally, if you face any specific errors or issues during the setup, let me know!

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Hello, WebXR doesn’t have support for postprocessing at the moment. You can read more about it here: Post-processing with WebXR by Neptilo · Pull Request #18846 · mrdoob/three.js · GitHub

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