Re: Double buffering

[Henk Jonas]

Thanks to all of you... I never like to delete code I've wrote, but in this case I will rip off the Lock/Unlock stuff and go with OffscreenWindow. But why haven't implement the licencees the Offscreen/copyRectangle stuff in the Lock/Unlock stuff instead of messing it up?

Henk

Ron Nicholson wrote:

Don't forget that there will also be some image tearing,
which may look like flickering, if graphics updates
aren't matched to the display refresh rate. e.g. If you
draw 2 images 75 mS apart, and the display refreshes
every 20 mS (50 Hz), then the top half your image
might appear darker than the bottom in one frame,
and the bottom half darker in another. This could look
like flickering in some circumstances.

One of the reasons that the animation in TV game
consoles can look smooth is that they usually synchronize
the display updates to match the field refresh rate.

Do any of the PalmOS hardware providers publish
their display refresh rates?


Ron Nicholson
HotPaw Productions
<http://www.hotpaw.com/rhn/hotpaw>

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