From: "Nitin Mahajan" <[EMAIL PROTECTED]>
> Hello !
> As regards C&T 69030 ,can anyone please tell ,what instant full screen
> page FLIP means????
It usually means that you render something to be displayed on the screen
in some offscreen part of the video memory, then you tell the chipset that
the screen starts at the new position. It's usefull for any fullscreen thing.
Example:
- Video memory starts at byte 0 and is 2MB long.
- There is a red dragon drawn on the screen.
- You render a blue fish from the 2MB-4MB region of the video memory.
- You wait for the scanline to reach the end of the screen (this is the dodgy
part).
- You tell the chipset that the video memory starts at 2MB. And presto ! a blue
fish is drawn on the screen.
- You can start to render a green mountain at 0MB.
- You wait for the scanline to reach the end of the screen.
- You tell the chipset that the video memory starts at 0MB. A green mountain is
now drawn on the screen.
> What part of the driver code in xfree86 is handling this???
Usually you have something in the code handling the viewport position.
Lo�c
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