Red Pixels on an object

[Streetwise]

I thought this might have been the result of having some non-v-ray material in the scene, so I ran "V-Ray Scene Converter" from the menu, but I'm still getting this issue. It doesn't matter if it's Progressive or Bucket. I've also tried a different material on the affected parts. Still nothing. I do NOT see it when I'm using active shade, but perhaps its because the resolution isn't as good. Is this a non-vray materials issue?

[Streetwise]

Is there an easy way to find (and remove) non-v-ray materials?

[Toko]

The easiest way would be vray scene converter. (Right click - vray scene converter)
Your existing vray materials wont be effected

cherers

[Streetwise]

Thanks, but I had tried that already. Turns out that V-ray scene converter DOES NOT convert "Autodesk Generic" materials. I always thought it converted everything. Oh well. Good to know!

[Toko]

sometimes a wrong normal map (wrong gamma on import) can create such effect.
Did you tested your scene with a Material Overide? or another Clamp Output Value?

[Svetlozar Draganov]

In most of the times such issues are caused by Autodesk Generic material, so it is best to first remove them from the scene.

[Streetwise]

In most of the times such issues are caused by Autodesk Generic material, so it is best to first remove them from the scene.

I tested with Material Override and it was fine, so suspicians confirmed with Generic material. So for this scene, I selected all of the v-ray materials that are visible to the camera and then hid them. I selected everything else and applied a v-ray black matte to kill any generic materials. Unhide everything and that fixed it. Seems like there ought to be a v-ray material converter that works with Generic materials... I haven't poked around on Script Spot yet, so perhaps there is.

[Vizioen]

I tested with Material Override and it was fine, so suspicians confirmed with Generic material. So for this scene, I selected all of the v-ray materials that are visible to the camera and then hid them. I selected everything else and applied a v-ray black matte to kill any generic materials. Unhide everything and that fixed it. Seems like there ought to be a v-ray material converter that works with Generic materials... I haven't poked around on Script Spot yet, so perhaps there is.

Not exactly what you asked but this script selects all geo with no vray-materials applied.

http://forums.chaosgroup.com/showthr...y-Mat-Assigned

[Streetwise]

Thanks Ashley, that's a perfect script! Should work nicely.

Dave