From: Christian Skluzacek (csklu_fs++at++yahoo.com)
Date: 05/08/2002 03:06:33
Hi,
I'm using the shadow and projective texturing
capabilities of pfLightSource but am trying to limit
how far the projective textures are projected. For
example, I set the near/far planes on pfFrustum and
attach that to the lightsource as follows:
pfFrustum * pFrustum = new(pfGetSharedArena())
pfFrustum;
pFrustum->makeSimple(45.0f);
pFrustum->setNearFar( 1.0f, 200.0f );
pfLightSource *pLSource = new pfLightSource;
pLSource->setPos( 0.0f, 0.0f, 0.0f, 1.0f );
pLSource->setAttr( PFLS_PROJ_FRUST, pFrustum );
pDCS->addChild(pLSource);
// Set shadow properties
pLSource->setMode( PFLS_SHADOW_ENABLE, PF_ON );
pLSource->setVal( PFLS_INTENSITY, 0.01f );
// PFLS_SHADOW_SIZE=256,
PFLS_SHADOW_DISPLACE_SCALE=1,PFLS_SHADOW_DISPLACE_OFFSET=0.0019
// Set Projective Texture properties
pLSource->setMode( PFLS_PROJTEX_ENABLE, PF_ON );
// PFLS_PROJ_TEX=pfTexture
This pretty straight forward and the projective
texture and shadow are drawn fine but they extend
beyond the frustum far plane (of 200.0). Is there any
other way of controlling this?
Thanks,
Chris
BTW, Performer 2.2.7 on Irix 6.5.7 on OnyxIR2 (also
linking pf libs statically to get shadows to work)
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