Re: [AD] X primitives patch

[Peter Wang <tjaden@xxxxxxxxxx>]

Chris wrote:

> If we can have direct, fast access to a Pixmap's memory, then I think 
> it wouold be beneficial to use them for the screen and system bitmaps.. 


Apparently, we can.  It appears there is such a thing as a shared memory 
pixmap.  See http://pantransit.reptiles.org/prog/mit-shm.html

> though it gives rise to the question of what role the shared memory 
> extension Allegro uses for the screen XImage is playing.


From the above: "Unlike X images, for which any image format is usable, 
the shared memory extension supports only a single format (i.e. XYPixmap 
or ZPixmap) for the data stored in a shared memory pixmap."

Peter