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4.9 Decals on mobile BUG?

I have found a strange issue:If I toggle receive decals off in a staticmesh placed in level,it really cannot receive decals,however,if I turn it off in a blueprint which has a staticmesh,it doesn't work on mobile,the decal still spawn on it.Thanks(I'm testing this on ios9 iphone 6plus and ios8 iphone 5s)

Product Version: UE 4.9 Preview
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asked Aug 13 '15 at 06:28 AM in Bug Reports

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avatar image AndrewHurley Aug 26 '15 at 06:34 PM

Hello hls333555,

Currently Deferred Decals are not supported on Mobile platforms.

Forums - Decal Functionality


Documentation - Materials for Mobile Platforms


The documentation outlines the current mobile limitations for materials and their associated shading models.

Thank you,

Andrew Hurley

avatar image hls333555 Aug 27 '15 at 06:34 AM

Actually,the coming 4.9 update make it available for mobile,so I'm sure it is a BUG,maybe the document needs to be up to date...alt text

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Hey hls333555,

Basic unlit decals. Supports three blend modes:

Stain = Modulate Emissive = Additive Translucent = Translucent. Decals with other blend modes will not be rendered on mobile devices.

Only skeletal meshes support switching off "Receive Decals" flag.

I found this little bit of information in the feature request that was submitted for Mobile Decal support.

Thank you for pointing out this bit of information as I was unaware we had supported it yet. It can be sometimes a bit much to keep up with all of the additions/fixes we make with each preview release.


Andrew Hurley

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answered Aug 27 '15 at 01:29 PM

avatar image hls333555 Aug 27 '15 at 01:55 PM

Thanks,hope you can make it support for staticmesh soon.

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