Re: [Gnash-dev] FPS sync

[Wei Cao]

hi, all, I tested u2_has.swf on my windows laptop, hope it's not so late . I just tried the first 400 frames with the command

    ./sdl-gnash.exe --max-advances 400 u2_has.swf

The gnash-0.8.5 with the patch last time I sent uses 61.770s CPU time, 51.006s is consumed in draw_shape_character , there are total 84384  calls to AGG.

The optimized version uses 44.744s CPU time, 36.268s in draw_shape_character, there are only 32123 calls to AGG now, which means,  5/8 calls to AGG and 25% CPU time is saved by cache. 


One question, I found there are three lt-sdl-gnash processes executing at the same time when I play a single flash file on a  arm like system, one takes about 70% CPU and 25% the second, and 2% the third, when I kill one of the three processes, the other quit too.  I use dynamic linking. 

The question is, why there are three processes when I execut the libtool generated script sdl-gnash only once, where and when they are forked in the code?

2009/5/26 strk <address@hidden>

On Mon, May 25, 2009 at 05:54:41PM +0200, Andrea Palmatè wrote:

> >Effective frame rate: 6.35 fps (min 4.73, avg 9.69, max 54.40, 170 frames
> >in 17.5 secs total)
>
> uhm, i didn't compile it with new changes but actually on my SAM 533 MHZ
> i get 1.40fps...

Ouch. Well, u2_has.swf is a bad beast. I hope our AGG-optimizer
guy will take his time to take a look at it too, to see how the
optimization change that.

Anyway I was only pointing out that the "catch-up" mechanism will
result in non-regular (not smooth) FPS experience, that is: gnash
will go faster when possible (ie: easy-to-render slices) rather then
continue with at *most* the nominal FPS.

Note that I just committed another patch implementing a frame-drop
mechanism. It's off by default because causes unpleasant behaviour
when being too late (never re-renders...) so needs to be cleaned up more.
If you want to give it a try, define SKIP_RENDERING_IF_LATE in gui/gui.h.

This is as of revision 10918.

--strk;

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