Dear all, I have an external EGPU Vega64 with my MacBook Pro (with discrete graphics AMD560X).
in blender 2.8 ...If I try to render (or viewport rendering) only on my Vega 64, the view port remains transparent. no rendering at all.
If I enable the rendering both on my Vega64 and on my 560X it works fine, and both GPU works at 100%.
I'd like to exclude the discrete graphics from rendering in order not to warm too much my Mac.
Is this a bug or something intended?