Bug#390188: Google Earth is very slow since mesa 6.5 with open source r300 drivers

[Michel Dänzer]

On Fri, 2006-09-29 at 19:10 +0200, Robert Derochette wrote:
> Package: libgl1-mesa-glx
> Version: 6.5.1-0.1
> Severity: normal
> 
> Hi !
> 
> I know I should not report about programs that are not in Debian. Anyway here is the problem. Before libgl1-mesa-glx entered sid, I tried several cvs builds of libgl1-mesa-glx from 
> experimental. Every time I started Google Earth with those experimental builds, Google Earth became very very slow (like 1 or 2 FPS). Downgrading to mesa 6.4 in Sid always solved the 
> problem. Now that mesa 6.5 is stable and in Sid, the problem with Google earth is still there.

It's because Google Earth uses functionality that the r300 driver can't
accelerate yet, so it has to fall back to software rendering. Enabling
the 'Disable Low-impact fallback' option under the 'Performance' tab in
driconf should give better performance at the cost of slightly
non-conformant rendering.


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer