https://bugs.freedesktop.org/show_bug.cgi?id=94220
--- Comment #2 from Michel Dänzer <[email protected]> ---
(In reply to Andy Furniss from comment #1)
> Using Xserver 1.18.1 + git amsgpu I don't get the fails.
>
> It's really slow, though.
>
> glxgears apparently using h/w (says synced to refresh) but 12 fps, vdpau
> about 1 fps.
That's because of
(In reply to csaba.halasz from comment #0)
> "Setting this option to none disables use of the glamor acceleration
> architecture. In that case, all 2D rendering is done by the CPU, [...]
"All 2D rendering" includes the copies for DRI2SwapBuffers, used for GLX buffer
swaps and VDPAU presentation.
Generally, this option is only intended for bringing up a 3D driver, not for
normal usage. So the bad news is that fixing this problem has very low
priority, but the good news is that you're not really missing anything. :)
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