I’ve downloaded and configured ddisplay, but in TouchDesigner, when I add a Direct Display Out TOP, I only see a single option in the “Display” dropdown. My suspicion is that because all of my displays share the same display name, it’s causing an issue.
Display Index
Adapter Index
NVAPI DisplayId
OS TargetId
Status
Source Resolution
Display Name
2
0
82061084
3107
Removed, Managed, Acquired
1920 x 1200
HDMI Matrix
3
2
80061082
2101
Removed, Managed, Not Acquired
1920 x 1200
HDMI Matrix
4
2
80061080
2103
Removed, Managed, Not Acquired
1920 x 1200
HDMI Matrix
5
2
80061086
2105
Removed, Managed, Not Acquired
1920 x 1200
HDMI Matrix
6
2
80061084
2107
Removed, Managed, Not Acquired
1920 x 1200
HDMI Matrix
Ideally, the TOP would use the same display index that’s used by the ddisplay utility.
Hey, from that output it looks like you have another GPU on your machine, and the displays are on that GPU. You need to make sure TouchDesigner is running on that GPU if you want to drive display from it.
I assume from the way you’ve set this up you are trying to output from 4 outputs on the second GPU. However you can’t do it this way. You need to be running on the ‘GPU’ you want to output from, and you can only have Direct Display 3 outputs.
You’ll need to join your GPUs together into a single virtual GPU using Multi-GPU Mosaic to get this setup to work the way you want.
On my machine I see both displays listed, although they have the same time. I’ll see if I can make that more descriptive.