[info-performer] Re: Shadow-mapping with OpenGL Performer

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From: Frank Hartman (Frank.Hartman++at++jpl.nasa.gov)
Date: 01/27/2005 09:10:45

faculaganymede,

Not sure what your setup is but we have had good luck shadow mapping on our NVidia cards under RH Linux. I think we just copied from projective.c but here is our shadow setup code:

--------------------------------------------------------------------
  Shared->Sun = new pfLightSource();
  Shared->Sun->setPos(-5.0f, -5.0f, -5.0f, 0.0f);
  Shared->Sun->setAmbient(0.0f, 0.0f, 0.0f);

  // Set up shadowing
  Shared->Sun->setSpotDir(1.0, 1.0, 1.0);
  pfFrustum *frust = new pfFrustum();
  frust->makeSimple(60.0f);
  Shared->Sun->setAttr(PFLS_PROJ_FRUST, frust);
  Shared->Sun->setVal(PFLS_SHADOW_SIZE, 512);
  Shared->Sun->setVal(PFLS_SHADOW_DISPLACE_SCALE, 1.0);
  Shared->Sun->setVal(PFLS_SHADOW_DISPLACE_OFFSET, 0.002);
------------------------------------------------------------------

Shadows are turned on by:

-------------------------------------------------------------------
  if(Shared->drawShadows) {
    Shared->Sun->setMode(PFLS_SHADOW_ENABLE, PF_ON);
  } else {
    Shared->Sun->setMode(PFLS_SHADOW_ENABLE, PF_OFF);
  }
--------------------------------------------------------------------

Hope this helps,
Frank

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