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| Multi-screen                       |
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| corTeX / Optimum  24 june 1998     |
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This is not really an FX in itself (the result is quite ugly);
it's more a little reminding about good old days tricks, to show that
they can still be used with Linux.

The program simulates the use of video memory pages: recall when you
were allowed to access the hardware, it was possible to change the
start adress of the video RAM displayed on screen. This allowed to
make "pseudo-animations" by changing a bit one video-page, and
switching between displayed pages.

Here we simply use a big buffer to simulate the video RAM, and we
modify and send for displaying one section of the buffer at a time.
This solution being very memory-consuming, the "video" buffer is in
8bpp, and the section to be displayed is converted into the X video
mode using a palette. (For now only 16bpp has its conversion routine,
but you shouldn't have problems doing your own ;) )

More delirious and efficent effects can be implemented by displaying 
any section of the "video" ram, and not only by individual pages; or
by screen-splitting, etc...
I let you all this as exercises for hollidays ;)


corTeX / Optimum, before his summer stage...