working on a little displacement feature, I realized that whenever any subsampling is set in the import image node, the left and the top image border get a grey blur creeping in.
I guess that when sampling the image edges somehow black gets sampled from the outside black matte.
in these screenshots I loaded a pure white bitmap.
this is gh & rhino 5.
I can’t repeat that, no matter what combination of interpolate and tiling I use. Can you upload the simplest possible file that replicates this problem?
I managed to fix it. It was remarkably difficult to get GDI to resize the image without the edges leaking.
The next public Rhino WIP will have the fix in it.