brendan powers wrote:
> Hi. I am interested in implementing the GL_EXT_bgra extention. It
> looks fairly simple, becuase no new function were added to this
> extention. New toekns were added for a fiew functions. See
> http://www.msi.unilim.fr/~porquet/glexts/GL_EXT_bgra.txt.html. I
> have read the sections in the documentation about adding extensions.
> They are a bit vague and seem a little out of date.
probably.
> How hard would implementing this function be?
> Any pointers to make it easier?
Basically, any place that GL_RGBA is accepted, GL_BGRA will also be
accepted. So, I'd start with a grep of the sources for GL_RGBA. Most
changes should be trivial.
One place that will require more attention is the util/pixel.c file.
That's where pixel packing/unpacking is done.
state_limits.c and cr_extstring.h will also need updates.
-Brian
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