AccuRender nXt

advanced rendering for AutoCAD

If I add a decal to an object, the size of the file sent to the renderfarm increases massively, sometimes to the point where it exceeds the 32Gb RAM the render nodes have.

However, it hardly has an impact on the size of the AutoCAD file.

Any ideas?

Here's an example.

Views: 164

Reply to This

Replies to This Discussion

What happens when you render the thing on your workstation?  The sent file should be very similar to the memory usage of an interactive session.  Try seeing what Task Manager says about your process memory usage -- OR - for a better diagnostic use the Performance Monitor counter-- Process->acad.exe->Page File Bytes.

The model you sent is a 3d solid,  it may be sensitive to FACETRES with or without decals. (This may, indeed be a decal problem-- just trying to exclude other possibilities.)

When I render it on my local machine, AutoCAD takes up 0.7Gb RAM and rendering takes up 0.4Gb RAM.

When I render on the farm, it takes up 5.5Gb RAM.

With the decals removed it takes up 0.01Gb RAM on my local machine and 0.71Gb on the renderfarm.

I have been rendering with decals for years without any problems. However, I did install the latest update on 12th July. Maybe something got broken.

Does sound like it-- I'll take a look this weekend.

Nope. Not that. I tried reverting to an older version of nXt, but it didn't make any difference. 

Thanks for that-- that's really helpful.  I think there's something in this particular model that's causing the behavior-- for example, it may be generating multiple meshes which might cause the decal to be instantiated a whole bunch of times.  I'll have to look to see.

No, it's not just that one. I get the same with other models such as this one:


Yep-- they may be similar in structure and behavior.  What version of AutoCAD is this?  That may have changed as well.

As suspected-- these models are generating many meshes and each time a mesh is generated an image is also written to the archive file when promoting to the farm.  Decals placed on simple geometry will not have this problem. 

The workaround that doesn't require any effort from my end is for you to make these things materials with planar mapped textures.

Otherwise, this too can be fixed but would require a fair amount of work.

Yes, I've done some testing myself this morning and it only occurs when the object is anything other than smooth.

I'll use the workaround for now, but it would be good if you could fix it in the long term as this is the closest Accurender has to UV mapping.

Thanks for looking into it.

It is fixed in the new stuff-- and support for UV mapped objects is better than in the current version as well-- although AutoCAD support for UV still isn't good the last time I checked.




Latest Activity

Paul Cloutier posted a discussion

nXtRender vs AutoCAD RT

My first try with nXt.Same models, same textures, same lights (ies 100W x 4).2 minutes render time.See More
Dec 25, 2019
Paul Cloutier replied to Paul Cloutier's discussion Material help !
"Hello Kevin Thanks. I will look at Yoooootube for more infos."
Dec 25, 2019
Kevin Lockwood replied to Paul Cloutier's discussion Material help !
"I used your mask (alpha) file as a mask in photoshop and saved out to png."
Dec 24, 2019
Paul Cloutier replied to Paul Cloutier's discussion Material help !
"Hello Kevin It's work with your .PNG file. Did you just SAVEAS a .JPG to a .PNG with a image editor ? Capture.PNG Render.png"
Dec 24, 2019
mike makki replied to Daniel Hargreaves's discussion Accustudio
"I can help daniel"
Dec 24, 2019
Kevin Lockwood replied to Paul Cloutier's discussion Material help !
"I'm not sure if you are applying the tree to the region as a decal or as part of a material. if a decal onto the region, I don't think AR will allow 2 decals. I guess you could stack them but I don't think one applies to the other…"
Dec 23, 2019
Paul Cloutier posted a discussion

Material help !

Hello...Need help for settings alpha for this tree bitmap.AutoCAD 2018.Thanks !See More
Dec 23, 2019
Daniel Hargreaves posted a discussion


I know this is hard to believe, but Accustudio is over 20 years old. It has been quiet for a couple of years now at the site. I'm looking to hand it off to the next generation. Is there anyone interested in working on the site and eventually taking over the ownership of it?See More
Dec 3, 2019

© 2020   Header image courtesy Peter Milner   Powered by

Badges  |  Report an Issue  |  Terms of Service