[Mesa-dev] [PATCH v3 05/10] formats: Use a hash table for _mesa_format_from_array_format

[Jason Ekstrand]

On Jan 13, 2015 6:38 PM, "Kenneth Graunke" <kenneth at whitecape.org> wrote:
>
> On Tuesday, January 13, 2015 10:28:20 AM Jason Ekstrand wrote:
> > Going through the for loop every time has noticable overhead.  This
fixes
> > things up so we only do that once ever and then just do a hash table
lookup
> > which should be much cheaper.
> > ---
> >  src/mesa/main/formats.c | 67
+++++++++++++++++++++++++++++++++++++++++--------
> >  1 file changed, 56 insertions(+), 11 deletions(-)
>
> This will break Windows.

Why? We have a C++11-based  implementation of pthread_once.
--Jason
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