Re: agg profiling

by Petr Kobalíček :: Rate this Message:

2009/5/17 Christof Schardt <csnews@...>:

>> intepolation is good idea, but do you think that this will be faster
>> and more accurate than the SSE2 source code I posted the link to?
>
> Sorry, I've not any experience in this and so cannot compare.
> It was just a thought.
> However, two considerations:
> - trigonometric functions in agg are not part of a numeric chain,
> where small errors could sum up and lead to unacceptable errors
> in the final results. It's only about visual representation and the
> the numerical precision requirements are loose, compared to
> scientific calculations

This is good argument to try it :)

> - if SSE2 is good in speeding up sinus and cosinus, it could
> also speed up the interpolation.

Definitely, SSE2 is actively used for that and I want to use it too.
In fact I used it to interpolate colors in gradient and the speedup is
significant.

> Best regards
> Christof
>
> P.S.: I lurked around on your source-site, it is an impressive project,
> I will stay tuned.

Thanks. It's hard project, but I really want to finalize it;)

> ------------------------------------------------------------------------------
> Crystal Reports - New Free Runtime and 30 Day Trial
> Check out the new simplified licensing option that enables
> unlimited royalty-free distribution of the report engine
> for externally facing server and web deployment.
> http://p.sf.net/sfu/businessobjects
> _______________________________________________
> Vector-agg-general mailing list
> Vector-agg-general@...
> https://lists.sourceforge.net/lists/listinfo/vector-agg-general
>

------------------------------------------------------------------------------
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables
unlimited royalty-free distribution of the report engine
for externally facing server and web deployment.
http://p.sf.net/sfu/businessobjects
_______________________________________________
Vector-agg-general mailing list
Vector-agg-general@...
https://lists.sourceforge.net/lists/listinfo/vector-agg-general

« Return to Thread: agg profiling