On 12/18/2011 12:34 PM, Walter Dnes wrote:
On Sat, Dec 17, 2011 at 08:10:54PM -0500, Walter Dnes wrote
The onboard GPU was initially incapable of handling 1080i video without
stuttering badly and dropping frames. After explicitly changing the
flags and rebuilding system+world+kernel, it displays 1080p videos
flawlessly. That's one big "co-incidence".
This was only recently installed. Is it possible that the generic x86
code from the initial install was the problem? And that emerging
system+world got me full optimization?
Could be. It could also be it's because of "-mfpmath=sse". That's only
used by default on 64-bit. On 32-bit, the FPU is used for floating
point operations by default, which gives better precision (80 bit vs 64
bit) but slower speed.
But then again, that sounds too much of a performance difference. So if
I had to guess, I'd say it's because of the world rebuild that made sure
everything was built with proper optimizations.
