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Author Topic: Subpixel-corrected lines and polygons on Amiga  (Read 8391 times)

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Offline Karlos

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Re: Subpixel-corrected lines and polygons on Amiga
« on: January 14, 2012, 11:35:43 AM »
Welcome to the site. As intro posts go, that was pretty interesting stuff. I only read the last part so far, so I think I'll grab a quick brew and read the rest.


Quote from: Scali;675467
Hello,
 
Some of you may already have seen my post on abime.net, but if not, I'd like to share it here as well:
 
I have recently picked up programming on the Amiga again, and decided to tackle the age-old problem of rendering polygons using the Amiga blitter.
I have kept a log of my progress, which you can find here (yes, it also includes some PC/DOS programming stuff, the Amiga stuff starts in part 2):
http://scalibq.wordpress.com/2011/11...d-skool-style/

But in particular I'd like to share parts 5 and 5.1, because after dissecting the blitter's capabilities, I realized that it was possible to apply subpixel-correction to the lines, at relatively low extra cost:
http://scalibq.wordpress.com/2011/12...t-real-part-5/
http://scalibq.wordpress.com/2012/01...real-part-5-1/

Hope you guys like this little trick.
int p; // A