On 11/28/2012 10:51 PM, Marek Olšák wrote:
I think the problem with Radeon/TTM is much deeper. Let me demonstrate
it on the following example.
Unigine Heaven needs about 385MB of space for static resources, that's
only 75% of my 512MB card. Yet, TTM is not capable of getting all of
that into VRAM. If I allow GTT placements, I get 20 fps, which is the
old Mesa behavior. If I force VRAM placements, I get 3 fps, because we
validate buffers 10 times per frame and there's probably a lot of
buffer evictions during each validation.
Marek,
Did you look at the total amount of referenced buffers in the ring
including vertex buffers?
Depending on how hard you throttle, I guess vertex / index buffer data
referenced by the
ring commands may well exceed the VRAM limitation.
/Thomas
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