[sldev] OpenJPEG vs KDU

[Callum Lerwick]

On Wed, 2007-06-27 at 01:39 +0200, Dirk Moerenhout wrote:
> Ok, in light of VWR-866 I'm wondering what it would take for OpenJPEG
> to replace KDU. I've heard that KDU would be faster. Anybody has an
> idea on how much? I've build OpenJPEG 1.2 with VS2005 and did a quick
> check using CodeAnalyst. A few minutes after my first run I got a 0.5%
> benefit with 1 minor change. That may sound minor but given the
> simplicity of the change I guess some real effort would give us quite
> a bit more.

I've revived Dzonatas DWT vectorization patch, which results in a
significant speedup. Especially combined with my T1
vectorization/cleanup patch which can pass floating point data direct
from T1 to DWT.

I've got a bunch of patches lined up I really need to finish off and
submit...
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
Url : http://lists.secondlife.com/pipermail/sldev/attachments/20070626/92e69e86/attachment.pgp