Sample Color From Viewport in Texture Paint Mode I have two objects I am trying to paint with two different materials. I'd like to sample from the viewport in order to maintain color choice, but cant do so -- it always tries to sample from the texture I'm currently painting on. The same goes for layers, it won't let me sample the layers below.

Is there an option to change this? A hotkey to tell it to sample from the viewport?
The hotkey is S.

It functions two ways, by holding S the current paint colour will be set to whatever is under the cursor. By clicking  RMB while holding S a new swatch will be added to the pallette. (see the end of these release notes)