AccuRender nXt

advanced rendering for AutoCAD

There is something not quite right , i have rendered the last image load for 500passes...

i have discovered there is white pixels appearing in the chrome finish.My question is that normal and how do we come over the problem.

mike

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guys guys guys...slateis a natural element  .....so no gloss finish

If it's natural slate then it will definitely have a sheen to it (see attached photos).

thanks for samples, peter .... actually, almost all materials do possess certain level of reflectivity ... there was some discussion a while ago, where roy posted quite useful pdf, made by a lighting manufacturer (i believe) where were discussed reflectivities of white matte paint, rough cconcrete etc... to me it seems worth it to add at least small amount to almost any material

The man is not for turning....:))))

Peter que configuracion minima de brillo necesitan los materiales? seguntu experiencia?

For this type of floor I would suggest trying the following as a starting point:

Intensity - 0.15

Sharpnes - 0.1

Fresnel - 0.7

This type of artifact is not unexpected from small bright sources reflected in a "near-specular" surface.  It is a limitation of the rendering algorithm.  The Path Tracer will probably do a better job with this, although if the light path bounces on the mirror cylinder before striking the source it may consider this a caustic path and exclude it.  Post-processing with PhotoShop or eq. (like you did) is probably your best bet.

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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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