Some surfaces come up black

Thanks for the link!

It turned out that something is wrong with that object’s material (“CoverFinish”), particularly with the “unitDiffuse” node:

If you set the node’s “Blend” parameter to anything but zero it fixes the issue. It’s probably an edge case and we’ll look into that. For now you can just set “Blend” to 0.001 and it should work.

johngrigni wrote:

I’ve stumbled on another problem – when the height reaches a certain point (controlled by a morph value – shape key) this one face on the front gets all strange, as per the photo.

Oh, yeah, this one of the limitations of shape keys. We should probably add information about that in the manual.

The reason the face looks weird is because a certain shape key when fully applied turns some faces inside out and verge3d doens’t handle this case well. The “diagonal.frame” object has a couple shape keys like that (heightOpen and moveDownOpen):

The solution is to rework these shape keys, for example heightOpen can be changed to this:

– this way there’s no faces turned inside out anymore. There is a drawback though – the shape key now affects the mesh to a lesser extent than before. It means that in order to acheive the same shape with this new shape key you need to use larger values (more than 1) in puzzles, i.e. if you change a shape key to be 3 times smaller then you can just multiply the morph factor by 3 right before using it in “set morph factor” puzzles.