Re: [Gnash-dev] How does gnash generate the frames?

[shamju joseph]

--- strk <address@hidden> wrote:

> On Sat, Nov 11, 2006 at 04:55:18AM -0800, shamju
> joseph wrote:
> > Hi
> >    I've a question. Does gnash generate every
> frame
> > independently or generate only the differences
> from
> > the last frame (like VNC protocols) while playing?
> 
> There's currently an experimental "differential"
> rendering
> algorithm that only renders the rectangle encloseing
> all
> changes in the underlying display list. Some
> discussion
> have been conducted toward possible improvements of
> this
> algorithm by mean of using multiple smaller
> rectangles.
> 
> > What's the data rate of playing swf files? (I mean
> > data rate for updating framebuffer)
> > For example, Does a 320x240, 16bits per pixel,
> 15fps
> > animation require a data rate of 17Mbits every
> second?
> > (320x240 x 16 x 15 bits = 17Mbits approx) 
> 
> Given the above algorithm, this can be much less.
> 
> > Please execuse me for asking these questions on
> > gnash-dev mailing list.
> 
> It seems the appropriate mailing list for this kind
> of questions to me.
> 
> --strk;
> 


Thank you for the reply. "differential rendering
algorithm " - Can you please explain little bit more 
or provide some references on this?
Which source code file does this ?

thanks
shamju joseph






 
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