Hi,

as you may already know r300 classic driver is in pretty good shape these 
days, but there's one thing that causes major slowdowns in many games: lack of 
hardware accelerated blit operation. 
Currently all glCopyTex[Sub]Image operations are done through span functions 
which is slow as hell.
We could use the hw blitter unit, but using it causes stalls because of the 
2D/3D mode switch.
I was wondering how this could be fixed and I got this crazy idea of porting 
the everything-is-texture concept from gallium to classic mesa. Actually not 
all of it, just the pieces that make the renderbuffers look like textures for 
the driver.

Brian, what do you think about this idea? Is it feasible and worth doing?
Maybe you have better ideas how to resolve this issue?

Regards,
Maciej

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