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When using Cycles, part of my transparent png on a plane shows up as black, and I can't see the blur effect in the background on the planet (for atmosphere). Is there a setting I need to change in order for it to be truly transparent?

enter image description here

It is transparent in Evee:

enter image description here

But I want the reflections that I get in Cycles.

You can download a test with the same issue here: https://mega.nz/file/iwgFUYJY#6UxEPZ2BforSP2ljyGb5kWwiZIZDNtjxfaohI7ZiGro

The "Glow Fac" on the Planetary Shader is where the atmospheric glow is coming from, and that's the part that isn't rendering when behind a an image as plane.

enter image description here

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    $\begingroup$ normally this should work. pls provide blend file, but before, do file - external data - pack resources so we can check out your image too $\endgroup$
    – Chris
    Commented Jan 24, 2022 at 20:56
  • $\begingroup$ @Chris - thanks - Here's the download: mega.nz/file/… $\endgroup$
    – Nathan
    Commented Jan 24, 2022 at 21:34
  • $\begingroup$ I thought it had to do with my image on plane being an emitter, but turns out that didn't matter. $\endgroup$
    – Nathan
    Commented Jan 25, 2022 at 1:57

1 Answer 1

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Your shader is the reason for this:

If i mute this "facing fresnel", it stops happening.

enter image description here

This is an compositing example, how you could solve it (i lowered the resolution for quicker render):

enter image description here

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  • $\begingroup$ interesting. But muting that removes the "atmosphere" glow effect as well right? So might just be the method used to create the atmosphere effect won't work with a transparent image plane? $\endgroup$
    – Nathan
    Commented Jan 25, 2022 at 3:29
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    $\begingroup$ yes, both are right. One way to avoid/solve this problem would be to use compositing and first render the world, and then above that your transparent image $\endgroup$
    – Chris
    Commented Jan 25, 2022 at 3:43
  • $\begingroup$ Ok, thanks for your help! $\endgroup$
    – Nathan
    Commented Jan 25, 2022 at 4:08
  • $\begingroup$ you are welcome $\endgroup$
    – Chris
    Commented Jan 25, 2022 at 4:16

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