Hi, I would like to change the disk shape of the sun to a custom shape. Is this something that is possible to do? Thanks! (Also, I’m pretty new here.)
Hey @cinziaccc! Welcome to the forums!
I BELIEVE this is very possible.
So first, you need to have a texture FOR your sun to replace the old one. If you have that, go into your level and in the world outliner find your Sky Atmosphere (or Sky Sphere). With that selected, look at the details panel which is on the right side of the editor by default.
Next you want to find the Sun texture property and put in your custom texture. 
Hope that helps!
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Thanks for replying so soon!
In the Sky Atmosphere editor, I couldn’t find any texture section properties.
Could you please highlight exactly where they are?
Even when I open the Sky Atmosphere material, I can’t quite locate the texture.
Or is there something that needs to be changed in the BP_Sky_Sphere window?
Also, I’m trying to make the sun appear larger(changing the source angle), but the reflection doesn’t match the source angle.
I saw a similar topic on the forum that suggests changing the sun’s size directly from the default engine sky blueprint, where the Sun Radius parameter is located.
However, even after changing that parameter, applying, and saving it, the reflection is still small.
Any leads?
Thank you !
change the source soft angle. what happens?
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The size of the sun disk changes, but the reflection still doesn’t match its size.
Is it probably something to do with the water body’s reflection parameters?
i dunno tbh. you have a setup. i have a setup. i can get a directional light to cast a clean reflection on a mirror plane. i dunno how much water normals influence it. if you use the default sky sphere bp you gotta do some math and sync the blueprint’s sun size with the directional light’s source angle.
without skysphere… just a directional light doesn’t work. it’s not occluded by geometry. needs some hacksh!t.
i have no synced sky material at this point. don’t care.
i have a different low end setup that involves a baked or captured and synced skylight hdri. that does the sky light reflection, but it’s a prototype in my lab, rn. not ready yet. : )