From: Christopher Phillips (shrydar_at_jaruth.com)
Date: 2004-11-03 12:57:21
On 1 Nov 2004, at 08:43, Steve Judd wrote: > Hey Hatch, > > Want to know one of the more time-consuming operations in 3D graphics? > Clearing the screen. No matter how fast of a plotting algorithm I > have, > it still takes at least 8*40*25*4=32000 cycles to clear a full screen > -- > about two frames. If you had a way to instantly clear out a section of > memory... Do you still do fullscreen clears rather than writing to the screen with an eor-plotter? Or are you referring to the cost of clearing the eorbuffer? > > As to organization, vertical organization is preferred for any > plotting. > That's why people use charmaps. That is, if you can simply ldy ycoord > then algorithms become simpler. True for BOBs etc, but I would have thought less applicable to 3d? > > You can add bitplanes if you want, but they'll be useful mostly for > static > graphics (or very small graphic areas). Forget chunky modes. The > reason > is that you just can't push much data around at 1MHz. *concur* > > The biggest problem you'll run into? Finding someone to program the > thing! But it sounds like a fun hardware project! I might be interested... Message was sent through the cbm-hackers mailing list
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