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Retrieving evaluated mesh


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#1 Shabadoo   Members   -  Reputation: 131

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Posted 08 January 2002 - 12:48 AM

Hi all, I was wondering if anyone knows how to retrieve the evaluated mesh that results from calling EvalMapsNV? I want to save it so that i can use it in a vertex buffer instead of re-evaluating the patch every frame which becomes horrendously slow when there are more than a few patches. Thanks Shabadoo

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#2 zedzeek   Members   -  Reputation: 528

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Posted 08 January 2002 - 07:44 AM

u should be able to check the extension spec (from nvidia as a pdf) u should be able to call a glGet..() command though wether or not this will be quicker is open to debate. im betting itll be slower (unless u do this once in initiation + then use the resulting info )

http://uk.geocities.com/sloppyturds/gotterdammerung.html

#3 Shabadoo   Members   -  Reputation: 131

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Posted 08 January 2002 - 11:23 PM

I''ve read NV''s extension spec about twice all up while i was searching for how to do triangular map evaluation, they decided to remove the old evalCoord method from the new spec coz they decided it would only evaluate full patches. I tried putting the call to EvalMaps in a display list but it didn''t appear to make any difference to the speed.

Shabadoo




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