Angus Dorbie (dorbie++at++sgi.com)
Tue, 31 Aug 1999 12:32:28 -0700
Given your requirements of only 1km resolution and a few 'burps'
acceptable then it probably won't be a problem for a PC with the right
software. CLIP texture is a separate issue however. It's an elegant
approach if the hardware supports it but it seems like it might be the
wrong thing to do if the hardware does not. Tools from Terrex create non
CLIP textured databases, with the right kind of properties.
Cheers,Angus.
Fernando Mato Mira wrote:
>
> At 04:57 PM 8/30/99 -0700, Angus wrote:
>
> >There are also system level requirements which I would say are extremely
> >difficult to sustain reliably on a PC with Win32 operating systems. With
> >large CLIP texture class databases you cannot hold them in system
> >memory, so the approach has to be one of sustaining high bandwidth i/o
> >from disk to system memory while paging from system memory to the
> >graphics pipe, while performing application processing culling and
> >rendering. That requires asynchronous data management linked to fine
> >grained real-time texture memory updates from the draw process. All with
> >graphics at a steady 60 Hz.
> >
> >It seems more than a little optimistic to say a PC can just do this.
>
> Not even an SGI VW running Linux?
>
> This would be an interactive app at 1 km ground resolution at worst (2 GB
> texture). Some little burps wouldn't be a problem, so a best effort
> implementation of ClipTextures would be OK.
>
> Thanks in advance,
>
> Fernando D. Mato Mira
> Real-Time SW Eng & Networking
> Advanced Systems Engineering Division
> CSEM
> Jaquet-Droz 1 email: matomira AT acm DOT org
> CH-2007 Neuchatel tel: +41 (32) 720-5157
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>
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This archive was generated by hypermail 2.0b2 on Tue Aug 31 1999 - 12:32:34 PDT