SCNView snapshot takes 0.5 second in xcode10_beta5

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Latest reply on Oct 2, 2018 10:47 AM by kelmatou

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chaol Jul 31, 2018 1:13 AM

I need use SCNView snapshot API to do AR screenshot, before xcode 10, each time call snapshot, it response quickly. But since xcode 10 and ios 12, this API call take more than 0.5 second, it make our app very slow, can anyone help on this. Why the snapshot take 0.5 second since xcode 10? And whether apple developer will fix this issue. I this issue not handled, it will seriously affect our exist app. I'm waiting for your reply, many thanks!

Re: SCNView snapshot takes 0.5 second in xcode10_beta5

Apple Staff (80 points)
3ZS Jul 31, 2018 7:21 AM (in response to chaol)

Please file a bug report about issues you need resolved using our bug reporting tool at https://developer.apple.com/bug-reporting/
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Re: SCNView snapshot takes 0.5 second in xcode10_beta5

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LittleyLv Aug 3, 2018 12:39 AM (in response to chaol)

Hi.
Have you ever had this problem when using snapshot?
https://stackoverflow.com/questions/51397382/arkit-arscnview-snapshot-memory-leak
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Re: SCNView snapshot takes 0.5 second in xcode10_beta5

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kelmatou Oct 2, 2018 10:47 AM (in response to chaol)

I had the exact same issue.
My app was running nicely on iOS 11.4 but since I updated my phone to iOS 12, sceneView.snapshot was freezing UI for 0.5-0.6s.

I fixed it by removing my sceneView.scene.lightingEnvironment.contents image.
I didn't make further research, I hope it will help anyone.
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SCNView snapshot takes 0.5 second in xcode10_beta5

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