AccuRender nXt

advanced rendering for AutoCAD

I am setting up an interior animation and would like some help on lighting.

 

The issue I am having is that I would like to find a better balance with the environment light coming through the exterior glass.  The space, particularly the ceiling, feel dark to me considering the large amount of windows lighting the space.

If I increase the sky intensity then it completely washes out the mullions which are important for me to show.  I also would like to see the clouds through the glass which is shown on other views. The cloud image is a planar map to a surface outside the glass. 

 

 I'll upload a small sample of the animation for an example as well.

 

I am using the sun, background at visible sky intensity at .001, interior lights on and sky at auto.

 

TSTC-1a:

cloud .75

sun 1

Sky intensity: .009

brightness: .30

 

TSTC-1b:

cloud .75

sun 1

Sky intensity: .5

brightness .30

 

TSTC-1c

same as b except brightness at 0

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So how did this guy get his exterior glass with a view and still maintain sunlight effect through his windows?. Short of placing a billboard outside my window I can't achieve any view of the sky.  Am I missing something?
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You can ask him yourself on the IRender nXt forum.  His name is Boothy-- probably best to try to friend him and send email.

 

In general, you can set different backgrounds using nXt.  In this case, changing the visible background should work.  Anything with a spherical or cylindrical mapping will work.  I recommend using HDRIs-- or converting standard bitmaps to HDRI using the Widget tool-- but in a pinch a standard RGB bitmap would probably work OK.

 

One thing which may be confusing you is that the WalkAbout background is designed for a planar projection only (as I recall.)  You'll need to use the Background tab under Lighting.

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Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"Yes, the glass material translated as Refractive automatically."
Dec 23, 2020
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Yeah-- like I mentioned the caustics are accurate but could be annoying.  Things that might alter it include changing the sun angle so it's not striking the chair's metal surfaces so directly, changing the roughness of the chair…"
Dec 23, 2020
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"Here's the latest render using metallic materials. The chrome now looks a lot better. I do feel though that the reflected light on the back wall is too bright."
Dec 23, 2020
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"Ah-- so that's a function of the material type.  The standard material won't give you a mirror anymore.  You need to change the material to metallic and you should get something more familiar.  Use the Type popdown on the…"
Dec 18, 2020
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"Pacing a mirror on the back wall (reflections = 1.0, noise = 0.0), you can see the difference more clearly (top image is nXt)."
Dec 18, 2020
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"You can see from these two images that there is definitely something wrong with reflective surfaces. It appears the light is being reflected, but not objects or textures. In the nXt version (top image), the carpet texture is being reflected in the…"
Dec 18, 2020
Roy Hirshkowitz replied to Roy Hirshkowitz's discussion AccuRender Studio
"It's interesting-- overall the quality of this interior is very high for that short amount of processing, and may be acceptable for certain scenes.  In this one, however, there are some reflective caustics that are taking longer to…"
Dec 17, 2020
Peter Milner replied to Roy Hirshkowitz's discussion AccuRender Studio
"ARDECAL now works. Here's the image after 10 minutes of rendering. I do have a slight concern that reflective surfaces seem rather dull. This is particularly evident on the end frame of the desk and the base of the chair."
Dec 17, 2020

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