[Bug 84662] Long pauses with Unreal demo Elemental on R9270X since : Always flush the HDP cache before submitting a CS to the GPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84662

--- Comment #8 from smoki <smoki00790 at gmail.com> ---

 And about Valley? If that is also the same, i don't know (might be dedicated
vram does not trigger this or something) that one made a noticable difference
for me :) Guessing you run all this without composite, because there as
unsolvable sttuter for me with Unigine Valley on Linux and Windows with Aero,
so when i comment out this it runs the same as in Windows - fist round only two
slight sttuters (normal ones), then second time there is no stuter.

 Tried now in Xonotic ultimate there is also one moment scene case where this
show much less fps drop for me, that is also the case when gtt get fueled.

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