Volumetric Lighting Issue

[sb_129__]

Does anyone know what might be causing my scene to turn completely black when I switch to Cycles? I've been trying to follow some youtube tutorials to enable volumetric lighting, but my render keeps turning pitch black when I switch to Cycles.

Sorry, I'm still somewhat new to Blender and volumetrics. A screenshot is attached below if I attached the imgur link correctly.

Any help is greatly appreciated. Thank you.

Screenshot [imgur.com]

[Count D'Cinamon]

sb_129__ eredeti hozzászólása:

I tried getting volumetrics to work one last time, but to no avail. I made a cube and gave it a volume scatter material. The left window is the render, you can see the volumetric cube shows as pitch black. However, the spot light shows volumetrics correctly (bottom right window). The material preview also shows the volumetrics being correct, so not sure what the deal is.

Anyway, thank you everyone for trying to help me on this. I really appreciate it.

Screenshot [imgur.com]

ok so here's my cube setting that works. https://imgur.com/34vFs9e

try to copy exactly like that, see if that works or not.

also, after seeing that screenshot, yes i would say you dont really need a volumetric light. it might be better for you to add sunflare / god rays effect post edit. but still, try my setting and see if it works or not anyway

[sb_129__]

Thanks for the tip. I just tried those settings @D'Cinamon, but I get the same result in cycles, except instead of white specs on the black cube I get pink/purple.

Cycles[imgur.com]

In Eevee, I get the normal render, but I'm not seeing any volumetrics coming from my spot lamp I add. I cranked the spot lamp to 10,000W and a customer distance of 500M and still no volumetric effect.

Eevee[imgur.com]

Thank you all for your help on this. Any suggestions on how to add sun rays in post production? I have GIMP and Natron, not sure if it's possible to make sunrays in either of these or not.

[Space Fart]

Might be unrelated but yesterday I noticed that my models went completely black as soon as I set render engine to cycles. I narrowed it down to the Normal map. I haven't done enough testing, I used Jsplacement to make a height and normal map and used them in any way possible, normal, bump, displacement in all possible combinations and most of the times the models became pitch black. I will add more info next time I launch Blender.

[Space Fart]

sb_129__ eredeti hozzászólása:

Any suggestions on how to add sun rays in post production? I have GIMP and Natron, not sure if it's possible to make sunrays in either of these or not.

You can also try photopea, google it. Basically free photoshop but I dunno how to add the rays. There should be tutorials online for photoshop.

[Girlgamer87]

sb_129__ eredeti hozzászólása:

Thanks for the tip. I just tried those settings @D'Cinamon, but I get the same result in cycles, except instead of white specs on the black cube I get pink/purple.

Cycles[imgur.com]

In Eevee, I get the normal render, but I'm not seeing any volumetrics coming from my spot lamp I add. I cranked the spot lamp to 10,000W and a customer distance of 500M and still no volumetric effect.

Eevee[imgur.com]

Thank you all for your help on this. Any suggestions on how to add sun rays in post production? I have GIMP and Natron, not sure if it's possible to make sunrays in either of these or not.

You could make a plane with an alpha gradient and position your sun ray manually.

[sb_129__]

What would the node setup look like for that? I'm assuming a color ramp and image node are part of it?

[Girlgamer87]

There's many ways to do things in blender, here's one for the 'sun ray' plane. You could replace the gradient with a texture.
https://imgur.com/agC9jkz

[sb_129__]

Thank you for that @binomas.

@everyone I ended up getting it to work just now. here's a Screenshot[imgur.com] of it.

Changing the volume bounces from 0 to 12 seemed to do the trick. I know I've tried tweaking this setting before, but for some reason it worked this time. Although, I changed a lot of the colors in various settings so not sure if that played any role in getting it to work.

Anyway, thank you a ton everyone for your help!

[Girlgamer87]

Good luck.