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How to manually update particle position in Niagara

Problem:

If there's an array of desired particle positions (50k) get updated every frame from BP, how do we update Niagara particle system to set these locations?

It works when I pipe through Cascade particle positions and finally update Material's World Position Offset, but no luck with Niagara so far. Can anyone help?

Product Version: UE 4.21
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asked Nov 09 '18 at 04:53 AM in Blueprint Scripting

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HolyBob
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Found answer myself. Using texture sample in Niagara does create beautiful particle system with point cloud data.

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answered Nov 26 '18 at 09:51 PM

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HolyBob
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avatar image ELKatlan Feb 08 '19 at 12:43 AM

Mind elaborating on your solution? I'm attempting something similar and would love a code snippet or a description of where to look. Are you just shoving vectors into a rendertexture, and using the niagara sampling and calculating UV from their index? Is your texture 1d?

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