[LIBART] ARGB <-> RGBA ?

[Johan Rydberg <johan rydberg netinsight se>]

Hi!

I would like to draw direct to the screen (or direct to a buffer
that is later bitblited to the screen) using libart.  Normally
graphiccards support ARGB 32-bit format, but libart can only (?) 
generate RBGA.  How hard whould it be adjust/extend libart so that
it generated ARGB instead?

bgrds
johan