by prodviz » Wed Jan 21, 2015 9:19 am
prodviz
Wed Jan 21, 2015 9:19 am
The only help I can offer, is that people say a 32bit file is needed.
I'm really interested to see how you get on with this, because I had a very similar issue (from mudbx). Unfortunately I couldn't solve this in the time, but as I was working on a still image, I took the file in to zbrush and decimated the model to a level which was workable.
I've asked for a tutorial from either mudbox or zbrush a few times, but to no avail.
Good luck and let us know if you crack (no pun intended) this one.
Oh, and here's a list of notes from one of the developers:
Displacement Mapping
1) If using a Displacement map, remove any Bump or Normal maps.
2) If you use a Displacement "Amount" of 0, the object will not render
3) Octane assumes black pixels in the displacement map have 0 displacement. If using a displacement map where 0 is a negative displacement (for example, a map generated from ZBrush), put a "Shift" of negative half the "Amount" (ie. if the Amount is 0.01, the Shift will be -0.005)
4) Large polygons with displacement will render artifacts if the displacement Amount is small.
5) Displacement mapping requires UV Projection surfaces. It requires a displacement texturemap, and procedural textures and Octane nodes which modify the displacement texturemap will be ignored. Similarly, the Displacement Texture Greyscale Image "Power", "Gamma" and "Invert" pins are ignored
6) Very large displacement "Amount" values may position vertices in an invalid position which may crash Octane. So start with small (0.001) Amount values and increase from there.
, as all the tests I've done without the negative value are fine.
