Volumetrics issues

Use this forum for general user support and related questions.
Forum rules
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Wed Sep 22, 2021 1:27 pm

anyway we are going to try to assign that value to everything included in the fog volume... let's see what happens.

daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Wed Sep 22, 2021 1:41 pm

wow... it seems to work. Sorry, it was difficult for me to understand the logics behind that.
fog fix_1.jpg
Thanks again dade.

daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Wed Sep 22, 2021 2:43 pm

i love it!!!
View 03 3000x1740_1.jpg

User avatar
Sharlybg
Donor
Posts: 2939
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Volumetrics issues

Post by Sharlybg » Wed Sep 22, 2021 7:15 pm

BTW I don't see how this can be achieved in blender with few click :?
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

kintuX
Posts: 720
Joined: Wed Jan 10, 2018 2:37 am

Re: Volumetrics issues

Post by kintuX » Wed Sep 22, 2021 9:12 pm

Sharlybg wrote:
Wed Sep 22, 2021 7:15 pm
BTW I don't see how this can be achieved in blender with few click :?
:? Why not?

daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Thu Sep 23, 2021 8:21 am

Hi, new issue:
This is what i get from this scene with volumetrics turned off:
water no volume_1.jpg

and this is what i get wen i turn volumetrics on, water has gone:
water and volume_1.jpg
it's a volume priority issue?

if we have the fog volume surrounding the scene set as interior volume, the walls as exterior volume, and the water as interior volume, which are the priorities which we have to assign to each volume?
We tried with fog volume set as priority 0, the walls as priority 0, and the water as 1 but the result is the same...


here the luxcore scene
https://drive.google.com/file/d/1Bz_imJ ... sp=sharing

kintuX
Posts: 720
Joined: Wed Jan 10, 2018 2:37 am

Re: Volumetrics issues

Post by kintuX » Thu Sep 23, 2021 9:28 am

Naturally, solids have higher priority than fluids, which have higher priority than gases.

BTW
here's quick animation of camera transition from outside into fog

acasta69
Developer
Posts: 444
Joined: Tue Jan 09, 2018 3:45 pm
Location: Italy

Re: Volumetrics issues

Post by acasta69 » Thu Sep 23, 2021 10:13 am

daros wrote:
Thu Sep 23, 2021 8:21 am
We tried with fog volume set as priority 0, the walls as priority 0, and the water as 1 but the result is the same...
It seems that all volumes in your scene are defined with the same ior = 1.5, so no difference between fog and water...

Code: Select all

scene.volumes.envVolume.ior = "1.5"
Support LuxCoreRender project with salts and bounties

Windows 10 64 bits, i7-4770 3.4 GHz, RAM 16 GB, GTX 970 4GB v445.87

daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Thu Sep 23, 2021 1:34 pm

Thanks acasta69, sorry for the stupid error.

now a new question.

the following picture is taken with the camera outside from the fog box.
View 02 600x300_2.jpg
Why i do not see the blue sky which is set as environnment around the fog box?
Thanks again for your help.
Attachments
cameraOutOfBBox.zip
(9.17 KiB) Downloaded 15 times

daros
Posts: 209
Joined: Thu Dec 12, 2019 3:25 pm
Location: inside human language
Contact:

Re: Volumetrics issues

Post by daros » Thu Sep 23, 2021 3:27 pm

and one more question but i cannot upload the file today.

here is a tree with fog off:
treeno_1.jpg

and here we have a very thin fog, about 10km visibility
treeyes_1.jpg

why the shading of the tree shows up so differently?

tomorrow morning i can upload the luxcore scene.

air now is set to ior 1

Post Reply