I keep experiencing random black pixels while using VRayDirt to produce ambient occlusion and rendered as a VRayExtraTex render element, this only happened in 32-bit files (in both raw VRImg and EXR exports). Those pixels are persistent in Photoshop comp, I can't paint them any other color or using Stamp Tool to eliminate them.
The only workaround, previously, was paint the layer in 16-bit or 8-bit mode and copy it back to the original 32-bit document.
I later on read somewhere in the forums about the NaN pixels, and found out that those black pixels do have strange values read by Photoshop ("--2147483648"). Hence I found another workaround which is to throw a Curve layer, as Levels layer won't work, on top of the problematic VRayExtraTex layer and paint on top of the black pixels.
My questions are:
Thanks in advance!
The only workaround, previously, was paint the layer in 16-bit or 8-bit mode and copy it back to the original 32-bit document.
I later on read somewhere in the forums about the NaN pixels, and found out that those black pixels do have strange values read by Photoshop ("--2147483648"). Hence I found another workaround which is to throw a Curve layer, as Levels layer won't work, on top of the problematic VRayExtraTex layer and paint on top of the black pixels.
My questions are:
- How to solve the issue and have V-Ray render the ambient occlusion/VRayExtraTex correctly?
- Why the Levels in Photoshop won't clamp the pixel values, but the Curves will? (sorry, this is a Photoshop question, but I hope it will help me understand the process more)
- V-Ray 3.6/4.3/5.0
- 3ds Max 2018/2020
Thanks in advance!
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