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BUG: Decal fade out doesn't work

Hello!

I want to spawn a DBuffer Decal that will fade out after 10 seconds. When I use the Set Fade Out node in blueprint (picture 1 below) the decal does not fade out, it pops out after 10 seconds. Neither does it work when I place a decal in the editor and use the Details tab to setup the fade (picture 2 below) - it pops out here as well.

Is this a known bug, or am I using the tools improperly?

/Accel Sjöström.

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Product Version: UE 4.12
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blueprint.png (69.3 kB)
details.png (43.4 kB)
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asked Jul 27 '16 at 03:14 PM in Bug Reports

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Accel Sjöström
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Hi Accel,

It was poor naming on my part, but setting the fade params simply expose a normalized linear "T" value, "Decal Lifetime Opacity", in the decal's material graph. You actually need to use that node to affect how the decal will look over time. I implemented it this way for 2 reasons:

  1. Decals that don't use this feature avoid the shader instruction.

  2. Artists are able to define what "fade" means for their decal. e.g. An energy field decal can change color instead of opacity.

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answered Jul 28 '16 at 12:59 AM

avatar image Accel Sjöström Jul 28 '16 at 03:33 PM

Thank you. Works perfectly when adding that node :)

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Hi Accel,

Thank you for submitting a bug report. I have reproduced this issue and logged a report for it here. You can track the report's status as the issue is reviewed by our development staff.

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answered Jul 27 '16 at 09:08 PM

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