AccuRender nXt

advanced rendering for AutoCAD



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Which engine?


How many lights?  I'd be happy to take a look, if you like.  Zip it and use the upload link above if you're willing.


  • Difficult lighting conditions I believe.
  • Pull(or hide) out all the furniture, leaving the walls, floor, doors, windows and lights and hit render. 
  • When satisfied with the results (also ensure the space is closed/sealed no leakages or opening to Space) by they you have an idea of the number of passes(rendering at a low resolution to save time) add the other components and do the final render.

One obvious problem in the version you sent me is that the units were incorrect-- inches instead of millimeters.  You can't combine natural and artificial lighting unless the units are set correctly.  For the versions below I corrected the units and changed the intensity of the artificial lights to 100 watts from 220-- I did not change the texture scaling so this is wrong in mine.  I also went to a standard sky with sun which is usually much faster than trying to light an interior with an HDRI and no sun.  I created a multi-channel rendering and placed the lights on one channel and the sun and sky on another. 

There are some minor additional things to consider when rendering:

  • For the hybrid engine, glass in the openings can actually make the calculation go faster.  Not sure if it would help in this case.
  • Don't use omnidirectional lights for spot lights-- use the spot or diffuse pattern.

After about two hours this is what I got-- combined, lights only, daylighting only:

Thank you very much for all you say, I had not considered. These points. You helped me very much, thanks again. In China, the units are in millimeters, have been accustomed to, converted into inch more than one procedure. In addition, convenient for you to change the model to send my mailbox?

Working in millimeters is just fine-- but you must make sure the drawing units in AutoCAD are millimeters.  DDUNITS or INSUNITS commands will work for this.

The model is a little too big to email-- send me a private message with a dropbox or equivalent address and I'll upload my version to you.  I left it running overnight:

我用Path Tracer渲染顶上的灯带没有,请问你是怎么做到的?

Again, not exactly sure what you're asking.  

My example used the hybrid engine, I would recommend it.  

In the model you sent, you did not use light sources for the ceiling indirect cove lights.  Instead, you used a material with glow.  What you see in the rendering is a glossy reflection of the glowing lamp.  This is not correct.  Use omnidirectional source for an improved simulation, but do realize that this type of lighting will result in significant noise and can take a while to resolve.




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OYEBANJI EMMANUEL posted a photo

00001 copy

An office render i did recently.Critics and comments are welcome.Its one of the frames of a walkthrough animation i did recently.I used sketchup to model, exported to autocad and rendered with nxt render.
Nov 22
OYEBANJI EMMANUEL posted a discussion

nxt render Course/tutorial

Good day Sir,I want to know the number of people that would be interested in a nxt render course because i plan to create one.Please send me a prompt reply if you are interested.Just sayHi am in.Checkout a walkthrough i just created recently with nxt render for autocad after modelling in sketchup and then post-producing in photoshop.…See More
Nov 5
"Good day Sir, Hope this message meets you well. I just completed a short walkthrough of an office. Its down here"
Nov 5
Maciej posted photos
Jun 6
Marko Stout replied to Peter Milner's discussion Comotion
"Is comotion still om progres? I need to make some moving parts in NXT!!"
Apr 7
Maciej commented on Maciej's photo


"Ok, give me couple of days, I'll try to work out the video tutoriał with mapping procedure. For free.. :) Regards, Maciej"
Mar 20
N` Goraw posted a discussion


Can I use accurender nxt to create a walkthrough animation in AutoCAD?See More
Mar 19
Maciej posted photos
Mar 16

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