Article View: comp.sys.ibm.pc.hardware.video
Article #324Re: Why V2 8MB can only do 800x600?
From: Klingon da Prevert!
Date: Thu, 21 Oct 1999 00:00
Date: Thu, 21 Oct 1999 00:00
23 lines
1460 bytes
1460 bytes
Well then, what about SLI mode, using 2 V2's? REM On Thu, 14 Oct 1999 09:22:16 +0100, Andrew Hodgson <ahodgson@nortelnetworks.com> wrote: >You need a certain number of bytes free in the framebuffer to do >Z-buffering on a Voodoo2. When you're in 1024x768 resolution the memory >requirements for a double buffered display (essential for games) & Z >buffering are as follows: > >Memory needed for display (16-bit colour depth): >(1024x768x16x2)/8 = 3,145,728 bytes (the 2 is for double buffering) >= 3MB > >Memory needed for Z (16-bit Z on a V2): >(1024x768x16)/8 = 1,572,864 bytes >= 1.5MB > >3+1.5 = 4.5 > 4MB therefore no Z buffer can be used. > >Andrew
Technical Details
Message-ID:
<380e85f8.685313@news.mciworld.com>Path:
arc1-ca.pugleaf.net!unknown!not-for-mailReferences:
<OKeN3.2098$AX.75933@news1.rdc1.ab.home.com> <380592B8.D98FF51E@nortelnetworks.com>Show Full Headers
Complete Article Headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f4bb2,6fa70b3349af8b44 X-Google-Attributes: gidf4bb2,public X-Google-Thread: 10320c,6fa70b3349af8b44 X-Google-Attributes: gid10320c,public X-Google-Thread: 10ec8c,6fa70b3349af8b44 X-Google-Attributes: gid10ec8c,public From: jivin@dajukejoint.com (Klingon da Prevert!) Subject: Re: Why V2 8MB can only do 800x600? Date: 1999/10/21 Message-ID: <380e85f8.685313@news.mciworld.com> X-Deja-AN: 538631024 References: <OKeN3.2098$AX.75933@news1.rdc1.ab.home.com> <380592B8.D98FF51E@nortelnetworks.com> X-Trace: pm02news 940465017 63.23.150.101 (Thu, 21 Oct 1999 00:16:57 GMT) NNTP-Posting-Date: Thu, 21 Oct 1999 00:16:57 GMT Newsgroups: comp.sys.ibm.pc.hardware.video,3dfx.products.voodoo2,3dfx.products.voodoo3