Re: [Qemu-devel] [PATCH] console: skip same-size resize

[Gerd Hoffmann]

On Fr, 2016-08-26 at 13:47 +0400, Marc-André Lureau wrote:
> virtio-gpu does a set-scanout at each frame (it might be a driver
> regression).

xorg vs wayland maybe?  as far I know only wayland pageflips for each
frame.

> qemu_console_resize() recreate a surface even if the size
> didn't change, and this shows up in profiling reports because the
> surface is cleared. With this patch, I get a +15-20% glmark2
> improvement.

Does anything break if you simply drop the qemu_console_resize() call
from virgl_cmd_set_scanout?  In theory we should not need a surface in
the first place in scanout mode, but I suspect there is a reason why the
call is there ...

cheers,
  Gerd