[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 #7 from Andy Furniss <adf.lists at gmail.com> ---
(In reply to smoki from comment #5)
> (In reply to Andy Furniss from comment #3)
> > Created attachment 107327 [details]
> > gallium hud on bad showing different vram gtt usage
> 
>  Hmm whatever GTT starts fueling fps gows down to crawl... I can't run
> Elemental on Kabini have just 1-3 fps :D , but i am curios what happens for
> you in HUD when you just comment out this in r600_buffer_common.c:
> 
> 	default:
> 		/* Not listing GTT here improves performance in some apps. */
> 		res->domains = RADEON_DOMAIN_VRAM;
> //		flags |= RADEON_FLAG_GTT_WC;
> 		break;
> 	}

It looks roughly the same as the pic posted.

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