I've searched the list archives and googled the last couple of days,
but haven't found an answer to this problem which I however assume is
rather trivial. I'm porting a win32 application which has the
following basic structure:
mainloop:
poll & handle events
draw changes to window backbuffer
draw changes in backbuffer to screen
Actually the port has been done for a while, it was started on Jaguar
and finished on Panther, but because my own benchmarks gave the
result that QuickDraw was the most efficient way to draw graphics I
was simply using an NSQuickDrawView and then porting was rather
straight-forward. Now in Tiger it however seems that Quartz has
surpassed QuickDraw in speed (is this correct?).
My problem with switching to Quartz (this problem was there also in
the port using QuickDraw, but I'd like to correct it now) is that I
would like to avoid having an "extra backbuffer", as each window
already has it's own backbuffer it feels unnecessary to have another
backbuffer allocated by the application into which all drawing is
first done which is then copied to the window's backbuffer.
Basically my question is: Is there any way to draw directly to the
backbuffer of the window, outside of the drawRect method in my
NSView? The problem is that while handling events the application
will need to update graphical elements, and I want to avoid having an
extra backbuffer.
I would very much appreciate any help on this topic.
Regards,
Simon
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