Any news on this? I'm experiencing faulty snapping every minute when modeling, so this is a major slowdown for me. I also found that having activated 'align rotation with the snapping target' results in erroneus offsets when snapping vertices to other verts on the same mesh.
Feb 10 2018
Mar 7 2017
Nov 18 2016
Oct 29 2016
I think I found the problem: Although I was editing the original file in Photoshop CS5 in grayscale mode, when saving it as PNG, Photoshop creates an RGB image nevertheless... No problem from Blender side here!
Oct 18 2016
prepared another blend:
Oct 11 2016
Also, should the file info in the properties region of the node editor change to something like 'BW' or 'Grayscale' when selecting an image texture node?
Thanks for looking into it :)
@Paul R (intracube) see above for the original file :)
Yes, still no change in memory usage here, tested with autopack off.
Makes no defference in memory usage here, regardless of rendering with cpu od gpu.
Tried exporting as grayscale from Blender and again checked in Gimp that it is single channel (which it is definetly).