Preview of returned height data is broken

[jdub233]

There is a problem with the vectorization that causes the preview of the data being returned from the shape display pins to just render black. I think the return data is probably there, my guess is that there is a problem with the code that turns the height data into pixels for the preview update.

Possibly this is the problematic code:

4dc323e#diff-1412617a81884740498055d2bad56986a3ac01d1c00b4e7ba5e3ad4df7a2af51L157