Subject: Re: [stella] Screen shots From: Erik Mooney <emooney@xxxxxxxxxxxxxxxx> Date: Thu, 22 Jan 1998 12:54:10 -0500 (EST) |
> >Good, good. You buffer the pixels before doubling them? > > Yes, but only for modex. Well,I don't care about mode 13h :) The hardware will double them for me, giving a slight speed increase (I think I already said that... been working too much...) > Sequentially. This way the whole buffer will fit within one segment, even > if we're doing 360 by 240. Cool. 320x400 would also fit within one segment, though I don't think I'd need it to. > I've added some variables that you can set with ModeXInit to tell the > emulator about the screen dimensions of the current video mode. _VideoWidth, > _VideoHeight, and _VideoPixels. If you set _VideoWidth to 180 (for 360 by > 240) the emulator will put out some extra blank pixels on every line to fill > it out. Otherwise it will do the normal 160. _VideoHeight sets the max # > of lines the emulator will generate. _VideoPixels is the total number of > pixels to convert. When the emulator runs out of lines to generate, it > fills the rest of the buffer out to _VideoPixels with blank pixels. This > way, all you have to do is convert the buffer (as fast as you can). Alright, that sounds helpful. Assuming we're in 180-wide, shouldn't the renderer put ten blank pixels at the beginning of the line and ten at the end to center it, or isn't that worth the trouble? > Done. You can find the files (0.89a) under "Developer Releases" at the > bottom of: > > http://www.whimsey.com/z26archive.html > > Have a nice weekend!! Cool. I might start tonight or tomorrow, but don't count on anything before the weekend (and of course most of Sunday is out - Super Bowl :) -- Stella list is Administered by krishna@xxxxxxxxxxxx <Glenn Saunders> Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/stella.html +-shameless plugs-------------------------------------------------------+ | Stella documentary at http://www.primenet.com/~krishna | | Nick's VCS links via http://www.primenet.com/~nickb/atariprg.htm | | Write the best game, win framed autographs of famous Atari alumni!! | +-----------------------------------------------------------------------+
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