Re: [AD] Expose events in OS X

[Elias Pschernig <elias.pschernig@xxxxxxxxxx>]

Peter Wang wrote:
> Typically (especially in proper programs, not examples) you have enough
> information to recreate the screen, so there's not any need for Allegro
> to handle expose events.  I suppose Allegro could handle it more
> efficiently?

Well, the reason why I would find it desirable would be more 
cross-platform-ness. Nobody developing their A5 program under OSX or Windows 
will understand what good those expose events do or why you should constantly 
update the backbuffer. X11 just is so much more stupid than Windows and OSX here :/

Previously it seemed like we'd have to somehow keep a copy of the screen 
contents, so it simply was impossible for Allegro to do this anyway. The way 
glxSwapBuffer() works (sometimes), it actually would be possible now to 
implement a solution.

Still, the reason why I posted was mainly to say that it's actually quite simple 
to redraw the contents under a typical X11 by calling al_flip_display() - with 
no change to the library required :) We could simply ignore that and leave our 
examples to do the complicated (but always correct) way or maybe also show a 
somewhat sloppy but much easier solution :)

--
Elias Pschernig <elias@xxxxxxxxxx>