OTOY Forums

Hi.
I'm facing 2 issues when trying to render RealFlowMeshLoader Objects on 3dsmax with Octane 3.x.

(RealFlow Meshloader Object - RFMeshLoader - is a plugin from RealFlow that loads geometry from a series of Mesh*.bin files created with the RealFlow standalone software. )

1. when rendering a sequence of images with Octane 3.x, the first rendered image loads the corresponding Mesh__.bin geometry file, but the geometry is not updated when rendering the other images.

2. While meshes inside the RealFlow bin files contains motion blur (per polygon speed) information, Octane 3.0 for Max doesn't render any motion blur.

--> Sequence image rendering and motionblur on RFMeshLoader objects are OK with the defult scanline 3ds Max renderer.
--> Same issue whatever the 3ds Max version (2014/2015/2016) and whatever the Octane 3.x for max plugin (from stable to last test version).


The weird part :
I was recording what should have been a "short video" to show those bugs, and I switched from Octane render to scanline render, then back to Octane... and suddenly : sequence rendering and motion blur were working with Octane. So I restarted 3ds max , did the same Octane test / switched to scanline / back to Octane , enabled /disabled / enabled motion blur on the renders engines and object attributes and it started to work again !

You can see all I did on the video, https://vimeo.com/181464947 .
The video is a little long (18min) , but I thought it was better to keep everything I did to better understand the origines of those bugs.

I'm running Octane 3.x, windows 10, 3ds max 2014/2015/2016 , 2 x nvidia 980ti 6G ram, PC : i7 3930k with 32 GB ram.
(do I need to tell that all softwares are genuine ? yes I need !)

Thank you to all the Otoy team that brings this beautiful piece of software.

Carlos Matias

here is script that does update for you https://corona-renderer.com/forum/index ... pic=3541.0

if you look through forums you will see alot of people complaining about it but otoy never fixed update bug. Try to use Phoenix FD for liquids


p.s. by the way motion blur for liquids does not work either

coilbook wrote:here is script that does update for you https://corona-renderer.com/forum/index ... pic=3541.0
if you look through forums you will see alot of people complaining about it but otoy never fixed update bug. Try to use Phoenix FD for liquids
p.s. by the way motion blur for liquids does not work either

Thank you very much Coilbook.
Fortunately, I found a workaround...
I bought the Thinkbox Frost plugin that can generate a mesh directly from realflow .bin particle files. It slows down the work under 3ds max (realtime mesh generation), but the rendering process works fine (with motion blur also).
The project I was working on is over now, but I'll soon work on something similar and perhaps I'll try Phoenix FD if I can get the budget to buy it.
Thanks again.
Regards.
Carlos Matias

We just ran into this same issue with Real Flow that has been brought up on a few forums in the past few years. The script that Colibook suggested thankfully worked for now but it is not a optimized solution to the problem.

The issue is that Octane is only recognizing the first frame of a Real flow .bin file sequence if you set 3ds Max to render an image sequence - basically Octane doesn't know that the geometry has changed and to load the next .bin file. So instead of trying to solve this problem for just Real Flow and it being it is not recognizing the .bin file is a sequence - how about a simple approach.

Could Octane make a check box per object that would by default not be checked, but if it was checked it would force Octane to reload that piece of geometry between every frame no matter what - even if that object has not changed? This seems like the simplest approach as it wouldn't even be a real flow .bin file issue at that point, just new geometry at every frame for that checked object. This would be much better then the work around script as the work around script loads the entire scene each time instead of just one piece of changed geometry.

Thanks.

anifex3D wrote:We just ran into this same issue with Real Flow that has been brought up on a few forums in the past few years. The script that Colibook suggested thankfully worked for now but it is not a optimized solution to the problem.

The issue is that Octane is only recognizing the first frame of a Real flow .bin file sequence if you set 3ds Max to render an image sequence - basically Octane doesn't know that the geometry has changed and to load the next .bin file. So instead of trying to solve this problem for just Real Flow and it being it is not recognizing the .bin file is a sequence - how about a simple approach.

Could Octane make a check box per object that would by default not be checked, but if it was checked it would force Octane to reload that piece of geometry between every frame no matter what - even if that object has not changed? This seems like the simplest approach as it wouldn't even be a real flow .bin file issue at that point, just new geometry at every frame for that checked object. This would be much better then the work around script as the work around script loads the entire scene each time instead of just one piece of changed geometry.

Thanks.

we told them about this for years and nothing was done so we just use phoenix fd which is pretty good

coilbook wrote:

anifex3D wrote:We just ran into this same issue with Real Flow that has been brought up on a few forums in the past few years. The script that Colibook suggested thankfully worked for now but it is not a optimized solution to the problem.

The issue is that Octane is only recognizing the first frame of a Real flow .bin file sequence if you set 3ds Max to render an image sequence - basically Octane doesn't know that the geometry has changed and to load the next .bin file. So instead of trying to solve this problem for just Real Flow and it being it is not recognizing the .bin file is a sequence - how about a simple approach.

Could Octane make a check box per object that would by default not be checked, but if it was checked it would force Octane to reload that piece of geometry between every frame no matter what - even if that object has not changed? This seems like the simplest approach as it wouldn't even be a real flow .bin file issue at that point, just new geometry at every frame for that checked object. This would be much better then the work around script as the work around script loads the entire scene each time instead of just one piece of changed geometry.

Thanks.

we told them about this for years and nothing was done so we just use phoenix fd which is pretty good

We are long time Real Flow users and usually pipe all fluids through Maya and render with Arnold. This was a small project and thought we would try something new - disappointing when we found out it didn't work. And then to see forums from 2014 talking about this issue in Octane is just sad. We were happy that script worked because we were 70% complete on this and needed that fluid for just a small part. It would have been a real pain to get things to work out as we were going for a one camera approach on the animation.