On Thu, 2006-09-21 at 12:58 +0100, Keith Whitwell wrote:
> Michel Dänzer wrote:
> > On Wed, 2006-09-20 at 18:56 +0000, Keith Whitwell wrote:
> >>
> >> Log message:
> >> Support both big and little endian, more source types and more
> >> destination formats through the swizzle path. It would be great to
> >> see this tested on eg, PPC machines...
> >
> > With the current trunk, glean pixelFormats fails 201 combinations on big
> > endian with both drivers, of which this commit broke 42 and the 'Extend
'Both drivers' referring to r200 and r300 BTW. I haven't tried software
Mesa yet.
> > swizzle support to all remaining source formats and texture destination
> > formats.' commit the other 159 (yay git-bisect! :).
> >
> > Changing type_endian_mapping() to return map_identity for
> > GL_UNSIGNED_BYTE brings it down to 144 and changing the last two
> > components of map_3210 to { 7, 6 } to 138,
>
> I think this must be a fluke - the 4,5 there refer to ZERO,ONE defined
> elsewhere. Those values are always at 4,5 and are only addressed as
> elements in an array of bytes - I can't see how their positions might
> change in littleEndian machines.
Yeah, as I said, I didn't really know what I was doing, it was just
trial and error. :)
--
Earthling Michel Dänzer | http://tungstengraphics.com
Libre software enthusiast | Debian, X and DRI developer
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