[Wayland-bugs] [Bug 98272] Europa Universalis IV, Hearts of Iron IV, and Stellaris fail to display anything on XWayland

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98272

Jason Ekstrand <jason at jlekstrand.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Europa Universalis IV,      |Europa Universalis IV,
                   |Hearts of Iron IV, and      |Hearts of Iron IV, and
                   |Stellaris fail to display   |Stellaris fail to display
                   |anything on Radeon Polaris  |anything on XWayland

--- Comment #16 from Jason Ekstrand <jason at jlekstrand.net> ---
I was looking at something almost completely unrelated and I think I came
across the root cause of this bug.  Currently, XWayland does not advertise
support for any multisampled visuals.  You can reproduce this trivially with
"glxgears -samples 4".  Hidden in comment 13 is this nugget:

(In reply to pandiculationfinch from comment #13)
> 300c302
> < 192 GLX Visuals
> ---
> > 480 GLX Visuals

I think the root cause here is that XWayland loads swrast for indirect GLX
instead of figuring out which actual DRI driver to load.  Since swrast does not
support multisampling, we get no multisampled visuals.  I don't really know the
internals of XWayland enough to know how to fix that problem but there it is.

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