Using Performer or GL for smoke like fx?

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Nicolas Gauvin (nicolas++at++cae.ca)
Mon, 5 Feb 1996 10:47:30 -0500

What is the recommed way to do special effects such as smoke in Performer?

I have code that uses straight GL to calls to rotate and draw the various
smoke puffs. pfuSmoke also uses straight GL. How about using Performer
primitives instead (pfGeoSet and pfGeoState) combined with the appropriate
pfDCS, pfSequence and pfBillboard? Would this be too much overhead compared
to using straight GL calls. Since the smoke puffs requires to be dynamically
sized and positionned maybe the fixed nature of pfGeoSet make them less
usable in such a context. I would like to know the opinions of people
who have tried both approaches.

     ___/ | ___/ Nicolas Gauvin e-mail: nicolas++at++cae.ca
    / / | / Software Developper voice: (514) 341-2000 x2275
   / / | __/ CAE Electronics Ltd. fax: (514) 340-5496
  / ___ | / 8585 Cote De Liesse, P.O. Box 1800
_____/ _/ _| _____/ Saint-Laurent, Quebec, Canada, H4L-4X4

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