[Bug 110781] Radeon: heavy r300 performance drop regression between 11.x and 19.x

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changed bug 110781
What Removed Added
Attachment #144439 is obsolete   1

Comment # 29 on bug 110781 from
Created attachment 144442 [details] [review]
quickfix, working with 19.x mesa versions (tested: latest)

Added a proposed quickfix based on "possible fix" from Marek.

This version now works with latest mesa and I suspect it does not break
anything else with other cards neither. Still could be cleaned up a bit by
finding and changing which r300 code paths ask for VRAM and GTT domains
together and changing code there, but this works so far.

This change favors VRAM domain over GTT domain when both are provided. For more
available memory, you can change it the other way around easily, but this seems
to favor faster speed over more memory available.


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