Image Tracking not showing on IOS

🌵 Needle Engine
1

Hi I am having issues with my basic Unity output (Ver 2022.3.52f1) with latest Needle plugin not working on Safari IOS or even chrome on IOS, link to my project: Image Tracking

It is built on top of the sample showcase for Image tracking, which works alright on my android chrome browser (I have the flags enabled) but on an iphone (IOS 17.6) and Ipad (IOS 18.2) safari browser I am getting these errors with latest updated IOS on my ipad

10 x 15 cm Pics
10 x 15 cm Pics4877Ă—3440 216 KB

Iphone (left) and Ipad (right) - New users can’t upload more than 1 media apparently :man_shrugging:

Any idea what’s going on and what am I missing? Last I tried about a year ago I never had these issues with IOS on my Ipad for my college thesis

2

Hi Nilay G.,

To better assist you with the image tracking issue on iOS, please provide the error messages you are encountering. It would also be valuable to know the specific versions of the Needle Engine plugin and any relevant configuration settings you’re using.

Additionally, consider using the “Copy Project Info Into Clipboard” feature in Unity and pasting the details here for further insight.

Here are some general troubleshooting steps for image tracking issues on iOS:

  1. WebXR Support: Ensure that WebXR is supported and properly configured in your project. You can check the support by visiting WebXR Samples.

  2. Browser Compatibility: Safari has specific requirements and limitations for AR features. Check if your project meets all necessary prerequisites.

  3. HTTPS and Permissions: Make sure that you are accessing your project over HTTPS, as many AR features require a secure context. Ensure that your permissions for camera usage are properly set.

Please share the error messages and the project info for further assistance.

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3

Hi, when looking at the console, there’s an error message about textures having size 0. Are these video textures?

Video textures are unfortunately currently not supported in QuickLook (a limitation by Apple, not by us).

That being said, I’ll open an issue internally, as it at least should not crash. Would you be able to submit this project as a bug report please?

4

Ahh that sucks okay, they are video textures as we are trying to overlay 2D animations over images and I had little success with AR foundation. This limitation kinda makes the whole project moot on our end but I’m happy to report the bug on Unity, thanks for the quick response as always, much appreciated.

P.s is image tracking on the quest 3 still blocked by Meta?

5

Depending on how complex the animation/content is, what we currently recommend is using animated quads and/or blendshapes to have the effect as a 3D animation (for your content here that would work, for example).

Yes, image tracking on Quest 3 is unfortunately still blocked by Meta.

Generally it looks like unfortunately there isn’t great consensus between device manufacturers as to how image tracking is supposed to work in WebXR (e.g. is it for placing content on images, or for detecting images like QR codes).

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