AccuRender nXt

advanced rendering for AutoCAD

Can I do this??????????????   with a material.

I have a background image which I need to see, I have a structure (house) which is the main part of the image, it sits on this background and I wish for it to throw a shadow onto a 3d face with a material that only shows shadow.

The material needs to only receive the shadow, but be Transparent for the background image to show behind. So if it works it will look like the shadow is over the background image.

Anyone got some ideas on settings???

Thanks

Ian

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Standard render engine only--

Use the Object Property called Alpha Channel to tag the object in question.  You should get shadows (the other engines will work but will not show shadows.)  The example below uses a ground plane-- but any object will work.  If you wish to use other engines you'll need to do a couple of renderings and build the mask by hand.

Ok that worked, thanks for that,

Now how do you control the strength of the shadow?

Photoshop or eq.-- it's in the alpha mask.

or e.g. Sun (Sky, or HDRI) intensity... :) 

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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
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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
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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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