Re: Possible S3TC patent issue in kdelibs

El Dilluns, 13 de maig de 2013, a les 20:59:15, Michael Pyne va escriure:
> Hi all,

Hi

> I was working on some QA notice bugfixes in kdelibs that have been reported
> for a long time (bug 259826), and came across the DDS image decoder (in
> kdelibs/kimgio/dds.cpp).
> 
> The code claims to decompress Microsoft DirectDraw Surface files compressed
> with various S3TC-family encoding algorithms, including DXT{1,2,3,4,5}. As
> far as I've been able to test, the code does accurately implement this.
> 
> However as far as I know S3TC is potentially patented. E.g. the Mesa project
> ships any code that can encode or decode S3TC-family algorithms in a
> separate library [1], which can only be linked in at runtime.
> 
> I won't tell you all what to do (I'm certainly no fan of software patents,
> especially for something as trivial as this code), but I did want to bring
> up the potential issue.
> 
> [1] http://dri.freedesktop.org/wiki/S3TC/

What about 
http://en.swpat.org/wiki/OpenGL#Possible_purchase_of_these_patents_by_OIN ?

Maybe the dri wiki is old?

Cheers,
  Albert


> 
> Regards,
>  - Michael Pyne