white dots

[cecil gittens]

what is all the white dots on the sidewalk?

Thanks

Cecil

[DaForce]

Your problem is either you need to tick invisible on your vray sun (if your using it)

or tick sub pixel mapping in the color mapping rollout.

[arcfx]

Thank the Gods for this check box

This has been a prob that would pop up often, I think this would be great if it came automatically checked on in Vray

[studioDIM]

It's due to a few things, but mainly to overloaded HDR samples in the gi/reflection calculations.
Clamping and sub-pixel mapping cure the symptoms, but do not make it right in principle.
What's needed, especially with sun and sky, is to turn the sun invisible (to cater for reflection/refracion), and prepare the scene materials so that they bounce/reflect light a LOT less than when used with standard lighting (that cures the diffuse-related issues).
In the video tutorial i prepared, it can be seen how with brighter materials rendertimes grow by a lot, and the dots appear.
Darkening the materials and exposing through a PhysCam gets rid of the dots and renders around 3 time faster for the same scene.

Lele

[joconnell]

Re: white dots

what is all the white dots on the sidewalk?

Tell the client it's bird droppings - quicker than re-rendering

[arcfx]

true true

Yes, understand what you are saying, but, still happens a few times even with Vray cams. As soon as I turn on Sub-pixel mapping the problems are magically solve.. unless your QMC is set lower than 1 to 8

[arcfx]

PS

cecil gittens, that biulding's for New York right? I see the AC train.

[cecil gittens]

yes it is located in brooklyn.

StudioDim. Thanks for the comments and the video. I looked at it, still trying to understand some of the comcepts.

Cecil