I don't really know if I should put this log under #Teti [gd0022] or TyMist, but this discovery was made because I was looking at the TyMist screens so I've decided here. 

I was on a tangent and found https://www.displaymodule.com/collections/ar-vr where they had things like the datasheet to the 1440px (300nits) screen I plan to use. I was on this tangent because I was wondering why the screens cost as low as £15 each (see below for the 150nit version) but the driver board added another £100+ to the BOM. 

I do wonder if I should prioritise higher brightness+contrast or lower blur. I'm leaning onto the latter since the effective contrast on a HUD isn't that great anyway, the PLDC is supposed to diffuse bright sources of light behind the display and I might want to configure a game such that I can turn my head to look around (I hear that motion sickness is a thing that exists in VR and the low duty backlight is used to mitigate it). Additionally, I think a transparent virtual monitor gets a free pass regarding the amount of tolerable imperfections. Just think of how fuzzy, low resolution and severly blue tinted holograms are in Star Wars.

Anyway, those DisplayModule guys sell this interesting thing:

I was looking up and down the internet in 2020 for something like this, which takes power+usb and a display interface as an input and outputs an Alt Mode USB-C. It's what the Gigabyte Titan Ridge and Gigabyte Z590I Vision D does with the 3060Ti's DisplayPorts installed in Teti. If I search "HDMI to Type-C", I'd get nothing except "Type-C to HDMI" adapters.

A tad more searching revealed a chip that could be powering it: lontium LT6711A.

And that lead me to Delock. I haven't done a full search, but I have a feeling that if an adapter could ever exist, these guys have made it.

Just look at some exciting things I didn't even know were possible:

Something to power a 10 metre DisplayPort cable! I'm not sure if there's a USB-C one that also conviniently exists, but I think a >=5m cable for TyMist would be nice..

I've used USB3 to VGA or HDMI offerings, but they only went to FHD 60Hz.

This sounds really cool too. I wonder if they've got a DisplayPort version. Or perhaps I could get a USB version for #Tetent [gd0090].

Now I'm sure all these things are out of my league budget, but it's nice to know what's actually possible since I can't Google what I don't know exists. This excitement reminds me of the days looking though an Argos catalogue.I'm hoping that I can find out the specific IC's that run these kinds of things, because I'd ideally like to take a single DP cable and send the video feed across all 4 displays. Practically speaking, it's probably better to spend the £200 just so that I have something that exists. I'm already finding it tedious to route the PCB for #Tetrinsic [gd0041] and I've then got things like #Tetent [gd0090] and #Tetent Timespy [gd0136] PCB's to design.