I don’t know if this is expected behaviour or not, and I don’t remember coming across this issue in 3dsmax, but when I have a blend material, my glossiness render element does not give the result I would expect. If I have a material with 0.8 glossiness as coat on a non reflective material, blended at 50%, I would expect the glossiness to remain at 0.8… but the result appears to have been darkened. Reflection filter I would expect to be darkened, but not the glossiness value.
Any ideas? Am I losing it in my old age?
The glossiness element is blended like all others. However this element only makes sense if you are using plain VRayMtl materials; it’s anyone’s guess what’s supposed to happen with multiple blended materials.
Best regards,
Vlado
Aha, that is true. That was a bit of a stupid question wasn’t it. I just assumed Vray might have done some interesting maths to give a sensible result…
Bizarely, I’m now using a single vrayMtl but for some reason the vrayReflectionGlossiness RE still doesn’t match the extraTex RE; it appears brighter (gamma?). I assume it’s a color mapping issue. Would it be possible that the extraText have a gamma correction applied and the straight vrayReflectionGlossiness not?
If you are saving to an 8-bit file format, then the image will be gamma-corrected, yes - depending on the 3ds Max output gamma settings.
Best regards,
Vlado
This was just from viewing in the VFB.
Ah ok. The VFB adds sRGB color correction to almost all elements; it doesn’t know that the glossiness one shouldn’t have it.
Best regards,
Vlado