Re: indexed vs. no-indexed meshed geosetes

New Message Reply Date view Thread view Subject view Author view

From: Ran Yakir (ranyakir++at++bezeqint.net)
Date: 07/05/2000 02:11:06


It is not possible to say how sigificant the performance hit is when you
use indexed primitives. It is safe to say that non-indexed primitives will
never be slower, but the rest depends on where your bottlenecks are. If you
are fill rate limited, there may not be a performance difference.
Indexed geosets require more CPU time since they add an indirection to
every attribute of every vertex.

Yoram Shahak wrote:

> Hi,
>
> I am using pfdMeshGSet to convert triangles into triangle-strips, in
> order to achieve
> best performance.
>
> pfdMeshGSet returns non-indexed strips.
> Is that because non-indexed are faster ?
> If so :
> a.) Why?
> b.) How significant is the difference ?
>
> Thanx,
>
> Yoram Shahak
> DreamTeam ltd.
>
> -----------------------------------------------------------------------
> List Archives, FAQ, FTP: http://www.sgi.com/software/performer/
> Submissions: info-performer++at++sgi.com
> Admin. requests: info-performer-request++at++sgi.com

--
 __                                  | Ran Yakir
 /_)  _  __   \  / _   / o __        | RT-SET Ltd.
/ )_ (_(_) )   \/ (_(_/<_(_)(        |
              _/                     |
-------------------------------------+--------------------------------
Phone :                              | E-mail : rany++at++rtset.com
  Work : 972-9-9552236  Ext #118     |          ranyakir++at++bezeqint.net
  Res. : 972-9-7489974               |
  Cell.: 972-58-713040               |
Fax    : 972-9-9552239               |

http://rtset.co.il/rany/index.html


New Message Reply Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Wed Jul 05 2000 - 01:15:54 PDT

This message has been cleansed for anti-spam protection. Replace '++at++' in any mail addresses with the '@' symbol.