From: "Alexei A. Frounze" Newsgroups: comp.os.msdos.djgpp Subject: Re: Math Copro. Date: Mon, 10 Apr 2000 19:28:45 +0400 Organization: MTU-Intel ISP Lines: 46 Message-ID: <38F1F32D.19274262@mtu-net.ru> References: <33304562 DOT 955368042979 DOT JavaMail DOT imail AT prickles> NNTP-Posting-Host: ppp96-85.dialup.mtu-net.ru Mime-Version: 1.0 Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: 7bit X-Trace: gavrilo.mtu.ru 955387490 64010 212.188.96.85 (10 Apr 2000 17:24:50 GMT) X-Complaints-To: usenet-abuse AT mtu DOT ru NNTP-Posting-Date: 10 Apr 2000 17:24:50 GMT X-Mailer: Mozilla 4.61 [en] (Win95; I) X-Accept-Language: en,ru To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com I do not know... But I do not use such things as Allegro for my 3d projects. At least my current project can not be written with Allegro. Allegro is a very common gfx library. For *really* fast 3d game engine it's not suitable. Btw, Allegro doesn't support Light Mapping used in Quake and it is not a very good thing for portal rendering. But please don't get me wrong!!! Allegro is a *very good library*, though. As for math chip, it's very slow on 486s and quite fast on Pentiums. For Pentiums I recommend to mix CPU and FPU instructions in order to achieve the best performance. Btw, pairing on U and V pipes is also a very good feature of Pentiums. I strongly recommend you to switch to Pentium instead of old and slow 486. Btw, why your 3d engine is so slow? Mine does 45-70 FPS on P133 in 320x200 mode. I think yours is slow due to overdraw. Right? Good Luck. Alexei A. Frounze ----------------------------------------- Homepage: http://alexfru.chat.ru Mirror: http://members.xoom.com/alexfru vingfel AT excite DOT com wrote: > > I use an old DJGPP with Allegro. > I created a small prototype of a new type of 3D engine. > This give me 5 minutes on my old 486DX2, 8Mb ram, to compute a picture, and > about 30 seconds (!!) on my Celerom366 (Overclocked to 500), 128Mb ram. > I just want to know... Is it sure that Allegro routine and DJGPP use the > math co-processor by default?? > > The answer ca be simply "Yes" or "No"... > > Thank you for your help, > > Vincent Gfeller > > _______________________________________________________ > Get 100% FREE Internet Access powered by Excite > Visit http://freelane.excite.com/freeisp