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Can't get frost to appear on HUD

We're trying to get frost to fade in and our on the HUD at certain points during the game.

We've applied it as a material to our hud widget like so:

alt text

The material in question looks like this:

alt text

Every frame, we set the value of the material collection parameter, which you can see in the lower-left of the material above. Here's a screenshot of the one and only place where this collection param ever gets set, with a value very close to 1, which is at the point where we should be seeing frost on the screen, but are not:

alt text

Here's the odd part: if we replace that "Collection Param" node in the lower-left of the material with a constant "1.0", suddenly we see frost on the screen in-game exactly as we should.

So, what are we doing wrong? Is it a bug in the material, or is the frost simply not updating due to being on a UMG widget for some reason? I'd hoped setting "IsVolatile" on that widget might fix it, but no such luck.

Product Version: UE 4.10
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asked Jan 29 '16 at 08:30 PM in Using UE4

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MSE_Taliesin
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avatar image 1999 Jan 29 '16 at 11:08 PM

I only read the last part of your post. maybe you should add most of the value then when you want there to be frost it will happen(Temporary solution.). The red stop symbol could be part of the problem on one of the widgets. Check the number for when the frost starts.

avatar image MSE_Taliesin Jan 29 '16 at 11:15 PM

I'm sorry, that doesn't even make sense…

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This turns out to be because UMG doesn't support material collections yet.

We've worked around the issue for now, but I'm hopeful this will get fixed.

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answered Feb 02 '16 at 03:41 PM

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MSE_Taliesin
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