Question about pixman,x11perf and xserver

[Adam Jackson]

On 12/5/11 6:39 AM, 杨帅 wrote:

> 1.I recompile the pixman with enable-neon,but when I use the x11perf for
> testing ,I can‘t see the significant difference between the pixman with
> neon and pixman without neon.That's why?

Presumably because you're not hitting a neon-accelerated path.  You've 
not said which x11perf tests you are measuring with.  Be aware that many 
of them are not at all relevant for real world performance.

> 2.xserver use which drawing library to resizing the window,scroll the
> text window ,and so on?
>
> 3.which library excepts pixman could I optimize using neon to improve
> the performance of xserver?

The X server has an internal library called 'fb' for this.  fb is a 
layer around pixman that implements X core rendering, either by calling 
down to pixman or directly.

- ajax