[Bug 55500] [sna gen4 w/a] corrupt rendering (including wrong rendering of characters and flickering on redraw)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=55500

--- Comment #168 from Chris Wilson <chris at chris-wilson.co.uk> ---
Created attachment 92287
  --> https://bugs.freedesktop.org/attachment.cgi?id=92287&action=edit
Always force a GPU flush between operations

Can you please try this patch against git and see if that improves things -
except for performance?

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