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MathGroup Archive 2000

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Re: how much graphics RAM?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg24040] Re: how much graphics RAM?
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 21 Jun 2000 02:20:01 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <8in7h6$4l3@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

the bitmap of the screen must fit into the graphics RAM ?
1024 x 768 x 3 (true color RGB) == 516096 Byte ?

All other RAM is for 3d Graphics to store textures, 
back buffer, alpha buffer and accumulation buffer ...

The OpenGL extension may need some more but the 
native OpenGL interface for real time graphics
used by Mathematica is so simple (no textures,
no alpha blending) that a front and a back 
buffer are sufficient.
So for making a real time 3d graphics that cover
your screen you will probably need 1 MByte video
RAM.

The 3d graphics of Mathematica is obviously
so slow that there can't be a hardware acceleration.

Using my OpenGL viewer or an other OpenGL addon you may
need sufficient more.

Regards
  Jens

Murray Eisenberg wrote:
> 
> System requirements for Mathematica 4.0 under Windows NT do not say
> anything about graphics (video) RAM.
> 
> To run Mathematica reasonably under Windows NT on a system with 128 MB
> RAM and up to a 256 MB swap file, and a resolution of 1024 x 768, what
> recommendations do you have, and why, for how much graphics RAM is
> desirable.  This is for undergraduate student use with 2D and 3D
> graphics, including animations.
> 
> In particular, is 4 MB graphics RAM really enough? 8MB?
> 
> --
> Murray Eisenberg                     murray at math.umass.edu
> Mathematics & Statistics Dept.       phone 413 549-1020 (H)
> Univ. of Massachusetts                     413 545-2859 (W)
> Amherst, MA 01003-4515


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