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I've added a plane with a clip of the smoke on it. I also turned off the shadows from the object as I don't need 'em. After I set up the alpha material it looks clean, but when I spread the plane on some area, using geometry nodes, my alpha becomes a bit dirty, not fully transparent.

What could I possibly forget? Original plane with a texture enter image description here

And the plane instances in geometry nodes: enter image description here

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    $\begingroup$ don't you need to increase the Transparency value in the Render panel > Light Paths > Max Bounces? $\endgroup$
    – moonboots
    Commented Jul 29, 2021 at 19:36
  • $\begingroup$ Yep. You're right. There weren't enough samples. Thanks =D $\endgroup$
    – 3DBear
    Commented Jul 29, 2021 at 19:58

1 Answer 1

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Increase the Transparency value in the Render panel > Light Paths > Max Bounces:

enter image description here

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