Re: videoprocessor
- To: fox@xxxxxxxxxxxxxxxxxxx (Jeff Fox)
- Subject: Re: videoprocessor
- From: Tor Silfverberg <d97tsi@xxxxxxxxxx>
- Date: Mon, 03 Apr 2000 17:55:44 +0200
- cc: misc
- In-reply-to: Your message of "Fri, 31 Mar 2000 22:49:10 +0200." <200003312049.WAA04065@kobra.efd.lth.se>
> If you program the video coprocessor to act as a windows accelerator
> then you need a few extra jump instructions and delay instructions and
> a bigger video frame. Then you can move things around by manipulating
> a few video coprocessor jump instructions. It makes the relationship
> between address and X Y location in a window a bit more complex.
Just what I was considering... have thought a bit on how to build a simple but
fast architecture for 2D acceleration/window handling, thought the misc-thing
was a good place to start. Where some kind of similar construction in the
amiga video chips, but it wasn't fast enough to handle X-positioning properly.
Where used for color setup (not fixed as yours seems to be, but
register-number based), Y-position handling for graphic contexts ("screens")
etc. What I want is some way to handle arbitrary such graphical contexts on
screen without need for this awful copy-everything, rescale-colors thing...
>
> Jeff Fox
Mucho Gracias
/Tor Silfverberg
