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Does temporal fade work on mobile?

Aside from whether the foliage system in general is supported on mobile*, does the temporal fade -- the 'screen door effect' -- work on mobile?

*I'm disregarding the question of whether the foliage system itself works because, if temporal fading does work on mobile, I'd like to take the effect and rejigger it to work for all LODs, not only foliage meshes.

Thanks in advance!

Product Version: UE 4.8
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asked Jul 28 '15 at 04:19 PM in Rendering

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Hi Tundra,

To answer the first part of the question you didn't want answered, the foliage system should render on mobile but not using hardware instancing, and it hasn't had any optimization or testing. I will add a ticket to have a look at that.

As for the temporal fading, I'm afraid it's currently not hooked up to the mobile shaders. It could be supported on modern devices capable of ES3 and above (I'll open a ticket to look at that too) but I believe there will be a higher cost on mobile tiling GPUs compared to PCs, so it will need to be looked at in some more detail to see how expensive rendering with the mask is. I know with the earlier generation of mobile GPUs, alpha test was quite expensive but I don't believe it's so bad these days.

  • Jack

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answered Jul 30 '15 at 10:24 AM

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