[x264-devel] What about optimization based on Intel SSE4.1

[Gabriel Bouvigne]

Bartosz Kulicki a écrit :

> According to this
> 
> http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3195&p=4 
> <http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3195&p=4>
> 
> Intel's Penryn provides nice speedup in DIVX and TMPG encoding.
> 

Sure, if you switch motion estimation to a full search using SAD as a 
distortion criterion, SSE4 will help a lot.
On the other hand, full search is not really the smartest ME algorithm.

I don't know about Tmpg, but the DivX test was done using an ME 
algorithm only taylored to demonstrate efficiency of SSE4, rather than 
what SSE4 would provide in a real case.

--
Gabriel