Smoke adaptive Domain (Volume render + z-mask layer) #33480

New Issue

samran abed alsalam · 2012-12-11T14:42:27+01:00

2012-12-11 14:42:27 +01:00

%%%smoke adaptive domain interactive with mask layer ,should be not ! !
There is a problem in this aspect !

in test file lock to
frame 106
frame 120

thanks
samran abed alsalam
%%%

%%%smoke adaptive domain interactive with mask layer ,should be not ! ! There is a problem in this aspect ! in test file lock to frame 106 frame 120 thanks samran abed alsalam %%%

samran abed alsalam commented

2012-12-11 14:42:27 +01:00

Changed status to: 'Open'

samran abed alsalam commented

2012-12-11 14:45:17 +01:00

%%%blender 2.65 _windows Ver

%%%

%%%blender 2.65 _windows Ver %%%

Miika Hamalainen commented

2012-12-11 16:21:24 +01:00

%%%Hey,

Could you make a minimalistic .blend file where this issue happens without any unrelated objects etc. Or at least explain what exactly should happen and when?%%%

%%%Hey, Could you make a minimalistic .blend file where this issue happens without any unrelated objects etc. Or at least explain what exactly should happen and when?%%%

samran abed alsalam commented

2012-12-11 18:12:56 +01:00

%%%new test file
What I'm trying to do is delete the layer containing smoke domain and keep the smoke over the other elements using mask layer
i have right render if the camera outside the adaptive domain
if the camera inside adaptive domain i don't have render 100% alpha !%%%

%%%new test file What I'm trying to do is delete the layer containing smoke domain and keep the smoke over the other elements using mask layer i have right render if the camera outside the adaptive domain if the camera inside adaptive domain i don't have render 100% alpha !%%%

samran abed alsalam commented

2012-12-11 18:17:40 +01:00

%%%sorry right render if camera inside adaptive domain
100% if camera outside the adaptive domain
This means adaptive domain working as Box and have Zpass .. so he cut everything Behind it !!
%%%

%%%sorry right render if camera inside adaptive domain 100% if camera outside the adaptive domain This means adaptive domain working as Box and have Zpass .. so he cut everything Behind it !! %%%

samran abed alsalam commented

2012-12-11 18:27:43 +01:00

%%%Do not forget BAKE the smoke !
I think should be excluded adaptive domain and domain from Z buffer
sorry for bad EN %%%

%%%Do not forget BAKE the smoke ! I think should be excluded adaptive domain and domain from Z buffer sorry for bad EN %%%

Miika Hamalainen commented

2012-12-11 19:27:39 +01:00

%%%Okay, I can see two possible issues there:

Smoke flows don't work if they're not on same scene layer with domain. There seems to be code specifically limiting this. Dunno why.
Smoke doesn't render if camera is outside the volume when render layer masking is enabled. This seems to be related to other bug and volume renderer TODO item:
http://projects.blender.org/tracker/index.php?func=detail&aid=28849&group_id=9&atid=498

I'll ask brecht if he can explain why this doesn't work. :)%%%

%%%Okay, I can see two possible issues there: 1) Smoke flows don't work if they're not on same scene layer with domain. There seems to be code specifically limiting this. Dunno why. 2) Smoke doesn't render if camera is outside the volume when render layer masking is enabled. This seems to be related to other bug and volume renderer TODO item: http://projects.blender.org/tracker/index.php?func=detail&aid=28849&group_id=9&atid=498 I'll ask brecht if he can explain why this doesn't work. :)%%%

Miika Hamalainen commented

2012-12-11 21:47:49 +01:00

%%%Problem no 1. is now "fixed" in r52898. Smoke flows don't have to be in same scene layer as domain anymore to bake. (Even though it wasn't really part of this report. :)

That render mask issue is still there, though.%%%

%%%Problem no 1. is now "fixed" in r52898. Smoke flows don't have to be in same scene layer as domain anymore to bake. (Even though it wasn't really part of this report. :) That render mask issue is still there, though.%%%

samran abed alsalam commented

2012-12-11 22:46:30 +01:00

%%%and smoke collision have same issues :)
%%%

%%%and smoke collision have same issues :) %%%

Brecht Van Lommel commented

2012-12-12 08:19:17 +01:00

%%%As I understand it, all collisions in Blender only interacts if the collision objects are on the same layer, that's a feature. In fact for smoke flows it might have been intentional too, seems consistent with collision then. There's always the smoke flow / collision groups that you can set if you don't want to use layers this way.%%%

Brecht Van Lommel commented

2012-12-12 15:28:51 +01:00

%%%I think the way the mask layers are set up here isn't quite working the way that feature was intended. Basically if you put an object on the mask layer, it will not be rendered, so putting the smoke domain on the mask layers means the smoke will not be rendered. However it happens to render anyway when the camera is inside the volume, and it's that which might actually be considered a bug.

The fact that the domain bounding box affects the mask is also somewhat unexpected, but disabling that wouldn't fix your case, the smoke still would not be visible then because it's on the mask layer.

Anyway, I think the correct way to set this up would be to put the red box on the mask layer, and enable the Zmask option, though I may not understand entirely what you're trying to do.%%%

%%%I think the way the mask layers are set up here isn't quite working the way that feature was intended. Basically if you put an object on the mask layer, it will not be rendered, so putting the smoke domain on the mask layers means the smoke will not be rendered. However it happens to render anyway when the camera is inside the volume, and it's that which might actually be considered a bug. The fact that the domain bounding box affects the mask is also somewhat unexpected, but disabling that wouldn't fix your case, the smoke still would not be visible then because it's on the mask layer. Anyway, I think the correct way to set this up would be to put the red box on the mask layer, and enable the Zmask option, though I may not understand entirely what you're trying to do.%%%

Brecht Van Lommel commented

2012-12-12 15:44:00 +01:00

%%%I committed a fix now for an issue with the setup I described, using the Zmask option, frame 67 was rendering wrong then without any smoke.%%%

samran abed alsalam commented

2012-12-12 17:28:50 +01:00

%%%I work on drama VFX project using blender (In this shot I try to break down the wall and use smoke to dust simulation)
It is difficult to explain what I'm trying to do and complex , but I found another solution to get what I want
new attach photo from the project "FOR FUN" :)
%%%

%%%I work on drama VFX project using blender (In this shot I try to break down the wall and use smoke to dust simulation) It is difficult to explain what I'm trying to do and complex , but I found another solution to get what I want new attach photo from the project "FOR FUN" :) %%%

Brecht Van Lommel commented

2012-12-13 09:30:50 +01:00

%%%Awesome, always great to see people putting Blender to good use :)

I've added this to the todo list of volume rendering issues now. It could handle this smarter, but I would suggest to use the Zmask option as that seems to be designed more for what you'd want to do.
http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Render#Volume_Rendering

The collision only interacting on layers is not a bug as mentioned, so I think this report can be closed.%%%

%%%Awesome, always great to see people putting Blender to good use :) I've added this to the todo list of volume rendering issues now. It could handle this smarter, but I would suggest to use the Zmask option as that seems to be designed more for what you'd want to do. http://wiki.blender.org/index.php/Dev:2.5/Source/Development/Todo/Render#Volume_Rendering The collision only interacting on layers is not a bug as mentioned, so I think this report can be closed.%%%

Brecht Van Lommel commented

2012-12-13 09:30:50 +01:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2012-12-13 09:30:50 +01:00

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Smoke adaptive Domain (Volume render + z-mask layer) #33480