I'll do some more in-depth testing, but finally checking out 1.2.6 on my desktop and I'm seeing vuo is seeing and rendering on my discrete GPUs!!
My only initial question is the highlighted line from 1st image:
VuoGlContext.cc:139 VuoGlContext_renderers() Driver: AppleIntelHD5000Graphics
as I'm not seeing a similar for Driver: NVIDIA etc
BTW, is there a CUDA feature request yet? ;)
good work and thanks