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Emitter Location via Alpha Map Texture?

Hello guys, I have a material with a crack alpha map on it:

alt text

I would like to make a particle where the particles comes out from the cracks, but do not really know how to achive it. I tried to somehow pass the Crack Alpha Map to the particle but did not really know what to do with it. IF anyone has any idea, please let me know. :P :D.

Product Version: UE 4.17
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asked Sep 27 '17 at 12:28 AM in Rendering

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You can't specify particles spawn location with texture. Only with static/skeletal meshes vertices or simple location modules.

For this case you can use cracks texture, maybe with some modifications, projected vertically by world position, as particles opacity mask, so particles spawned everywhere, but visible only along cracks.

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answered Sep 27 '17 at 04:48 AM

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avatar image PrekoPista Sep 27 '17 at 06:13 AM

You mean I should just pin my Crack Alpha Map into the Particles Materials Alpha Mask?

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