It's not that easy. We have to make a fade out/in gradient on overlapping areas because it is not possible to align projectors pixel-peefect (there are also some lens errors like barrels etc). We're already using xrandr overlap with hardware edge blending.
> On 13 Sep 2020, at 05:49, Adam Nielsen <a.niel...@shikadi.net> wrote: > > >> >> The main issue is that we don't have enough (physical) space and budget ;) >> to use bigger and more expensive projectors with edge blending, so I wrote >> small piece of code for that (python + moderngl) which is grabbing pixel >> data from xvfb to "project" it onto a big quad, then, setting viewports I'm >> calculating edge masks for overlapping areas, and black levels for non >> overlapping aras... etc. > > Maybe I'm misunderstanding, but couldn't you just use xrandr to change > the viewports for each output so that a few pixels near the edges > overlap and get sent to multiple projectors? > > Maybe the overlapping sections might become a bit brighter having the same > pixels drawn by two projectors, but I guess you could just overlay a fixed > rectangle in your code with the right alpha value to dim those pixels to > compensate. > > Cheers, > Adam. _______________________________________________ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: https://lists.x.org/mailman/listinfo/xorg Your subscription address: %(user_address)s
