I need to mirror flip one display and can’t find the setting.
I’m developing an XR display where the left and right views from two monitors are optically folded by a mirror to provide passive (polarized) stereo 3D. One display should be normal, the other needs to be horizontally mirror-flipped.
Going through the NVIDIA control panel, I’m not finding the setting I need to mirror flip one of the displays in order to make this setup work . Is there a hidden menu I could use, or do I have to go through the Warp and Blend API?
Card: Quadro RTX 5000 (notebook)
Driver: 528.24 (DCH)
Host machine: Dell Precision 7750 laptop, running two 2k monitors via the two Thunderbolt ports.
there is an option in the Control Panel to flip one display in stereo mode horizontally and vertically. For more control you will need a tool called “configureMosaic.exe”.
The prerequirement is an Ampere GPU or later and it’s only guaranteed to work for desktop GPUs. Notebooks might include video switches to drive a display from the integrated or dedicated GPU etc, so it might work on some notebooks but not others.
To use the Control Panel:
Display → Setup multiple displays
Right click one display, Smart Clone with the second display
3D Settings → Manage 3D settings
Set Stereo - Display Mode to Planar stereo mirror display
Great! Thanks for the reply- Regarding the control panel settings, I am able to choose Smart Clone between the two displays. I don’t, however, see the “Planar stereo mirror display” setting in 3D settings → Set Display mode :
Is this because I’m only on a RTX 5000 (mobile) and not a Ampere GPU (or were you simply noting that the Ampere was required for the Mosaic Utility Tool) ?
I thought I remember seeing Planar’s (now 3D PluraView) manual say it supported my GPU as well as Ampere’s (here’s their setup instructions: https://kelyn3d.com/wp-content/uploads/2020/12/How-To_setup_3D-PluraVIEW_with_nVIDIA_Quadro-Cards.pdf) . That makes me wonder if my control panel version / or driver is not correct (NVIDIA Control Panel version is 8.1.963.0) ? Thanks again for any further insights.
There was a new hardware feature added in Ampere to allow such mirrored scanouts. So it’s not just the tool requiring an Ampere. The Control Panel makes use of the same feature (the tool just allows you more control).
OK, thank you. Sounds like I’d want to upgrade to an Ampere GPU to get this functionality out of the box.
I took a look at the link which mentioned using the NV API Warp and Blend functions in the NV API. Perusing the API functions, I couldn’t locate which functions would accomplish horizontal mirror flipping. Would you know which direction I might go using the API?
we have sample code here: https://developer.nvidia.com/warp-and-blend. Note that this would be a “software” fallback and not using the Ampere (and later) hardware for more efficient scan-out.
On Ampere and later I’d recommend to setup your system with ConfigureMosaic mentioned above.
I have a portable computer with NVIDIA RTX A4500 Laptop GPU, driver version 572.83, MosaicUtility version 2.4.9. It’s a plannar setup, two monitor connected and configured in the NVIDA control pannel. I’m able to clone them. But never able to make the upput monitor vertical mirror!
I have tested Setting clone mode in stereo mode, but it’s not working, the upper screen is not mirroring.
I have tested the settings “clone Stéréo plane”(in french, not sure of translation, I suppose i’t the plannar one), but it’s not working, the upper screen is not mirroring. Nothing different than Clone mode.
I have tested configureMosaic.exe set rows=1 cols=2 mirroring out=0,0,NM out=0,1,VM but it’s not working, the upper screen is mirroring, but it’s one big screen, not a clone.
I have tested configureMosaic.exe set rows=1 cols=2 mirroring out=0,0,NM out=0,1,VM overlapcol=1920 but it’s not working, the upper screen is not mirroring, but it’s on a clone.
you probably will need to add the option “passivestereo – Creates a passive stereo configuration with the requested topology on each eye.”
to tell the ‘mosaic’ to show the same content on both screen/parts of the Mosaic, but one mirrored…
Hi @Frank_Quadro , I have tested this command, but it didn’t work. So passive Stereo in the command help says: “This option is only supported on multigpu setups having a RTX PRO Sync board or an SLI/Nvlink bridge”
tested:
configuremosaic set passivestereo mirroring res=1920,1200,60 rows=1 cols=1 out=0,0,nm out=0,1,vm
I will try to test this on a setup with an add-in GPU, but I’m pretty sure it won’t work from a laptop GPU, since it would at least need both screens to be external, identical and directly connected to the A4500mobile GPU, not connected to the integrated GPU, and then rendering just accelerated by the A4500 (Optimus), which is the typical mode for most laptops…
As I said, the Stereo Clone mode is activated and works fine. We just need to flip one of screens so the mirroring glass show both image aligned and not one flipped! It’s a plannar setup.
As I said, the Stereo Clone mode is activated and works fine. We just need to flip one of screens!
I tested, and it worked for me, with identical screens on identical connectors (DP), and your syntax…
Since your laptop only allows for a mix of an HDMI and a DP out, I assume the error message “DISPLAY_ON_WRONG_CONNECTOR” pointing exactly to this difference, is the cause for why we can’t scan out for the 2 different protocols with the HW feature of mirroring…
!maybe! you could trick this by using a DP2HDMI adapter on the laptops DP out, and use the HDMI-in of the 2nd planar screen, so both would show as HDMI sinks, and we could hopefully use the HW mirrored scanout feature on these 2 now identical HDMI screens?
Pls let the community know, if actually this works…?
Perfect, it’s really a good news for us that you made this work. We’re gone try to make our setup output two HDMI connections. We have some connectors to order, but sure, I will update this post as it makes some time we search for a solution and it’s really a pain to find good information about those kind of setup. Thanks again for testing you bring some hope to our journey!
use an adapter that says DP++, which makes it a passive adapter, and our GPU sees the sink as an HDMI sink (even though connected over a DP port, with the adapter from DP2HDMI…). Don’t go for any active adapter, which would still be an DP sink, but then actively convert the signal into HDMI…
It’s WORKING, it has taken some time to figure all out, but now it’s working. It’s pretty simple in fact, just need the right configuration and adapters.
So our setup:
Dell Laptop Precision 7770
Plannar setup (2 screens with DVI connections with a mirror)
One USB-C to dual HDMI connector, connected to USB-C DP capable laptop port
Two HDMI to DVI adapters
configuremosaic utility updated as 2025-06
We have to re-enable the laptop screen in the Windows configuration
The command that works for us: configuremosaic set passivestereo mirroring res=1920,1200,60 rows=1 cols=1 out=0,0,nm out=0,1,vm
Depending on the screen connection order, we sometimes have to change the vertical mirroring screen out=0,1,nm out=0,0,vm
