AccuRender nXt

advanced rendering for AutoCAD

Coming soon-- path tracer only.  Architectural applications are probably limited-- but it's interesting new territory anyway.

 

Views: 314

Reply to This

Replies to This Discussion

Here's a blend of SSS and procedural marble:

 

Will do well in certain ceramic tiles

 

There is very well function of nxt, thank you! :-)

Here's a different use of a similar technology:

Is that fog I see?
In this case, confined to a box 1 meter high.  Uses subsurface scattering techniques...
What's the point of this technology?
I'm not sure I understand the question.  Do you mean "what are the applications?"
I just want to know what exactly your message means - Subsurface scattering - is it some new funcionality in nXt? What's so special on these pictures? What gives this technology?

There's an ok summary of subsurface scattering on Wikipedia.  It's an industry standard term so there's quite a bit about it out there.  Here's another decent article.

 

Generally speaking, the lighting in nXt and all previous versions of AR occurs at the surface only.  Subsurface scattering is essentially a volumetric technique, where interactions also occur within the medium.  It's required to accurately model materials which we think of as "translucent".  It's also helpful with materials where the light penetrates the surface a little bit-- such as the marble dragons-- and then scatters on its way out.  The feel of the images above would be very difficult to achieve without this technology.

 

A similar technique can also be used to model other participating media, such as the ground fog above.  This has a very different feel than previous fog implementations.  The technique can be extended to model non-homogenous participating media-- things like smoke or non-uniform fog (clouds?) etc..

 

Downside is that it can take a long time to resolve these materials-- accurate simulations almost require a path tracer approach.

Thanks a lot for this explanation. Looks promissing.

BTW. I found the Path Tracer the most interesting and valuable feature of nXt. It gives realy soft light (for the first time in whole AR history). But it's not perfect - it's slow - sometimes even hours and houndreds passes don't fix the noisy areas. I'd like to ask you - are you planning to develope this engine? I think it realy worth it.

It is being developed-- subsurface scattering is an example of this.  I'm working on a stand-alone version of the engine as well.

If you mean-- will the performance improve substantially?-- I don't think so.  I don't have any magic wands to wave at the moment.  One of the things I'm going for with this engine is simplicity.  None of the really technical items matter to the path tracer-- for example: Glossy switches, daylight portals, ambient lighting settings, etc.. have no effect.  The combination of this simplicity and the calculation of more light paths slow the thing down-- quite substantially in the case of interior daylighting.  The above mentioned stand-alone has almost nothing to set.

I'm also investigating another engine that has the potential for even more accurate simulations-- probably a little slower, though.

On the bright side-- computers continue to get faster.

RSS

Search

Translate

Latest Activity

Peter Milner replied to Peter Milner's discussion Animation
"I am unable to load comonxt.arx for some reason."
17 hours ago
Peter Milner replied to Peter Milner's discussion Animation
"Hi Mike, Yes, I appreciate there are better ways of doing it, but time and cost won't allow me to go down those routes."
19 hours ago
Alfons Akamp replied to Peter Milner's discussion Animation
"Das kann nicht sein. Ich habe bei einem Kollegen der Acad2015 hat, testweise Comotion zum laufen gebracht. Version 013. Das muss laufen, sonst ist irgend etwas total falsch gelaufen."
Jul 22
Peter Milner replied to Peter Milner's discussion Animation
"Nope, still not working."
Jul 22
Rich Hart replied to geoff herguth's discussion checkerboard screen
"Also check the license dialog to make sure you're authorized and not in Demo mode with limited resolution."
Jul 21
Roy Hirshkowitz replied to geoff herguth's discussion checkerboard screen
"Check the zoom on the image.  Send a screen shot if you still can't figure it out."
Jul 21
geoff herguth posted a discussion

checkerboard screen

Does anyone know why all of a sudden no matter what resolution I set The rendering appears at the bottom left of the window, the rest is checkerboard?See More
Jul 21
Roy Hirshkowitz replied to Judith Klein's discussion Systemfehler im Autocad beim Öffnen von Accurender NXT
"Again, I need to isolate the problem before I can help.  I need your comments to be very specific. Do you mean "with the sphere drawing loaded I open the Batch dialog from WalkAbout and that produces a crash" -OR- do you mean…"
Jul 20

© 2016   Header image courtesy Peter Milner   Powered by

Badges  |  Report an Issue  |  Terms of Service