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Metal tessellation shader

Postby dev19872014 » Mon Aug 06, 2018 12:37 pm

Hey,

As per roadmap unity 2018.2 support tessellation feature in ios.

But my amplify tessellation shader not working.

How to achieve tessellation effect in unity?
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Re: Metal tessellation shader

Postby Amplify_Borba » Mon Aug 06, 2018 2:04 pm

Hey there!

What tessellation shader are you using on ios that is currently working? Can you share it with us for further investigation, together with the ASE shader? You can do so via support@amplify.pt if you'd rather share it privately.

The tessellation technique used in ASE is the same as Unity's so, if Unity's tessellation shaders are working in ios, so should ASE.
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Re: Metal tessellation shader

Postby dev19872014 » Tue Aug 07, 2018 4:21 am

Hey,

Thanks for the response.
I am building ios app with amplify shader example only.
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Re: Metal tessellation shader

Postby Amplify_Borba » Tue Aug 07, 2018 10:06 am

Could you try using one of Unity's Tessellation shader examples?

I'm sending one of them as an attachment for your convenience:
UnityTessellationSample.zip
(891 Bytes) Downloaded 11 times


The sample I've sent is a Unity Standard shader and, since we use Unity's Tessellation on ASE, if it doesn't work it means that there is an issue on Unity side regarding support on iOS.

If this sample works, it means that there is in fact an issue on our side, and we will proceed to investigate it.

On a side note, I did notice that they mention at the end of the manual page I've shared that they've added support for Tessellation for Metal added in 2018.1, but this might not guarantee that it works on all devices.

Thanks!
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Re: Metal tessellation shader

Postby dev19872014 » Wed Aug 08, 2018 12:20 pm

Hey,
Thanks for the support.
It's not working in iPhone X with unity sample tessellation shader.
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Re: Metal tessellation shader

Postby Amplify_Borba » Wed Aug 08, 2018 2:22 pm

Thank you for testing it on your device!

It seems that Unity's tessellation technique still has some issues, unfortunately there's nothing that we can do on our side in regards to this. As such, I'd suggest that you get in touch with Unity to report the issue you're having while also providing details such as Unity version and target device.

We'll also be keeping an eye out for any possible fixes on Unity's side regarding tessellation on iOS/Metal issues.

Apologies for the inconvenience, please don't hesitate to get back in touch if you come across any other issues.
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