Hello all. I'm trying to do smoke effect. I've got some result and I noticed that the smoke has bugs. There are “lines” in the smoke. It seems that the smoke move in voxels only to horizontal direction. Does anybody know what it is ?
Thanks.
PyroFX smoke bug
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- maxpayne
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- eetu
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- Sadjad Rabiee
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I should check your project ,I should know about your parameters and setup ,Sometimes that's because Pyro parameters and sometimes that's because Render setting ,for example sometimes we have some noise and unwanted event on the Pyro that they solved with Raytracing Engine !
So upload a simple example about your project if you can :?
So upload a simple example about your project if you can :?
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- Constantine Petrov
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- maxpayne
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Here is a settings of the solver. I found a video with comparing parameters. https://www.youtube.com/watch?v=qwGshtSQuxY [youtube.com]. There are a lot of the same bugs when he is comparing disturnace parameters. But disturbance is off in my case.
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- Constantine Petrov
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- maxpayne
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- eetu
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- maxpayne
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- maxpayne
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- eetu
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Sharpening is using the Gas Reduce Local DOP, which works on a cubical subvolume, and that could introduce axis-aligned artifacts - I presume.
“ The neighbourhood regions are always cubic in shape, despite the term radius being used. ”
http://www.sidefx.com/docs/houdini13.0/nodes/dop/gasreducelocal [sidefx.com]
“ The neighbourhood regions are always cubic in shape, despite the term radius being used. ”
http://www.sidefx.com/docs/houdini13.0/nodes/dop/gasreducelocal [sidefx.com]
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- maxpayne
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- xukca
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Last summer, when I was exploring pyro2.0 I encoutered the same issue. There was a fix suggestions in THIS http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=133337&highlight=#133337 [sidefx.com] thread, but I still couldnt resolve the issue. 
I must try again turning off the shaping tab, when I have some free time…
I must try again turning off the shaping tab, when I have some free time…
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- maxpayne
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- Skybar
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- Neil78
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- xukca
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maxpayne
Hi xukca. It seem that you had problem with a banding. It's a bit another thing.
Thanks for the replay maxpayne! If this is really a banding issue, what would be a propper solution? I could try playing with the color gradients a bit, but I somehow doubt this alone will fix the problem… Is the only viable option to introduce noise/dither and blur to the image in post as Neil78 suggested?
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- eetu
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xukcamaxpayne
Hi xukca. It seem that you had problem with a banding. It's a bit another thing.
Thanks for the replay maxpayne! If this is really a banding issue, what would be a propper solution? I could try playing with the color gradients a bit, but I somehow doubt this alone will fix the problem… Is the only viable option to introduce noise/dither and blur to the image in post as Neil78 suggested?
Did you try changing your volume filter from Box to Gaussian, and maybe increasing the size a little bit from 1.0?
(OBJnode ->Render->Shading->Volume Filter)
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- johner
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- maxpayne
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