But it did require quite a lot of tinkering to get right. Turns out that riftcat sends to steam vr the ipd by reading it off a qrcode that is supposed to be printed on the headset. My headset did not have that qrcode, so steamvr was reading the default ipd of 0,06cm. In short, vr strabism. I had to search on the internet for the qrcode of the vrbox my headset is based upon, found it, had google cardboard scan for it. And yeah now steam vr focuses just fine. I did not try to play any games with it yet.

I also needed a way to stream my desktop over to my headset, I need something like that to see the vr viewport inside blender, as well as to see 3d videos reproduced on my pc etc. People on the net advice kinoni streamer but I couldn't get it to connect, instead I used a combination of the nvidia experience and an android app called moonlight. It doesn't lag at all, doesn't disconnect, works perfectly. So then I had to setup a custom screen resolution to avoid blender's viewport to appear stretched, wich required some more thinkering inside nividia's control panel.

Once in blender I was able to manually set all tecnical parameters about vr, including the ipd, and experimented with various vr methods. I also discovered what causes dizzyness on me, it's extremely hard to get a comfortable combination between camera lenses and ipd, the vr type that gives me less eye stress is the parallel cameras ones, but that is also the one that creates the most flat 3d. In general, the stronger the 3d effect, the higher the stress on the eyes and the more dizzy the thing becomes. Setting a real life scale for the object I was looking at and setting in blender my own ipd (that I measured myself) was giving off pretty relaxing results but the 3d wasn't extreme.

I'll keep fiddling.