I made a rather ATARI looking maze game a while back,written in QBASIC. (Source code is buried in my terrabyte drive somewhere...)
I ended up making different functions to create an API. The Window Library drew windows pixel by pixel (It's QBASIC,remember),and were called dynamically as a library file. Wouldn't be that hard to make an API,it would just require you to make it from scratch. On Fri, Jul 29, 2016 at 10:32 PM, Rugxulo <rugx...@gmail.com> wrote: > Hi, > > (FYI, I've personally never done a lot of heavy graphics programming, > so I'm just giving general advice here.) > > On Fri, Jul 29, 2016 at 9:11 PM, David McMackins <cont...@mcmackins.org> > wrote: > > Some web searching has yielded no useful results for my query. > > What did you search for? CGA/EGA? MCGA/VGA? SVGA/VESA? > > > I'm considering developing some graphical programs for FreeDOS, but I'm > > not sure what graphics APIs are available and documented for it. > > The BIOS is fairly limited, IIRC to 640x480x16. You can do better with > VESA, but there is little (if any) hardware acceleration support (e.g. > old VBE/AF via FreeBE/AF [DJGPP]). > > > My expertise is in C, but if I can achieve it in Pascal, I'm open to > > getting deeper into it. > > For C, it depends on the compiler, naturally. So for something like > DJGPP you can use (old but excellent) Allegro. For C++ (DJGPP) you can > probably use FLTK. There's also a VESA lib for Pacific C (mirrored on > iBiblio). > > EDIT: Also found this link, if it helps any: > > http://www.delorie.com/djgpp/doc/ug/graphics/vesa.html > > Pascal? Dunno, there's tons of third-party external units, if TP's > "Graph" isn't good enough. But I'm not sure if they work with all TP > versions (e.g. freeware 5.5 since TPU is usually incompatible). Not > honestly sure what (extra libs) FPC supports, but FPC is probably > preferred overall. (Blocek had some good libs bundled with it.) > > http://ftp.lip6.fr/pub/pc/garbo/pc/turbopas/ > > > What interfaces are available, and/or what documents can I review to > learn more about > > graphics programming on DOS? > > VESA is probably your best bet: > > http://ftp.lanet.lv/ftp/mirror/x2ftp/msdos/programming/specs/00index.html > > P.S. A lot of old games comes with sources (e.g. Boboli), so you could > study those. Specifically, I mean old '90s-ish DOS games written with > DJGPP, but there are others too, of course (Wolf 3D, Doom, Quake, > Hexen2, ROTT, Duke 3D, Descent). > > http://ftp.lanet.lv/ftp/mirror/x2ftp/msdos/programming/gamesrc/ > > > ------------------------------------------------------------------------------ > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel >
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