How to change shading mode in Performer?

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Po-Wen Shih (shih++at++cis.ohio-state.edu)
Fri, 20 Jun 1997 16:14:46 -0400 (EDT)

Hi,

  I know this should be a fairly simple question but I just couldn't get it
right.

  I need to chnage the global shading model between PFSM_FLAT and PFSM_GOURAUD.
I have tried the follwoing two ways but both gave me 'segmentation fault'.

first approach (got from the 'man' page of 'pfShadeModel'):

  pfShadeModel(PFSM_FLAT);
  pfOverride(PFSTATE_SHADEMODEL, PF_ON);

second approach (got from the insight manual page of Performer):

      pfGeoState *gstate;
      gstate = pfNewGState(NULL);
      pfGStateMode(gstate, PFSTATE_SHADEMODEL, PFSM_FLAT);
      pfApplyGState(gstate);

I am using the ported perfly from Performer 1.2 as a base program. I inserted
the above codes between all the initialization done by perfly and the
'while' simulation loop. Does anyone know what's wrong with my code?

Thanks for any help.

Po-Wen Shih
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