From: Volodymyr Kindratenko (kindr++at++ncsa.uiuc.edu)
Date: 10/23/2003 13:27:52
Hi:
I am developing a virtual mirror (scene rendered in a separate channel and
then uploaded as a texture to a polygon in the channel's draw callback). It
seems to be working, but...
When I look at the resulting mirror from a short distance, it looks OK:
http://moneypenny.ncsa.uiuc.edu/temp/mirror/1.jpg
When I start moving away from the mirror, the texture is combined with the
color of the base texture set by
texture->setImage((uint*)pfMalloc(comp*ns*nt*nr), comp, ns, nt, nr);
http://moneypenny.ncsa.uiuc.edu/temp/mirror/2.jpg
Eventually, only the base texture color remains as I move far away:
http://moneypenny.ncsa.uiuc.edu/temp/mirror/3.jpg
pfTexEnv mode is set to PFTE_REPLACE
What am I doing wrong? Which flags need to be set on pfTexEnv? Please
help! Here is the code that creates the texture:
// texture
int comp=4, ns=128, nt=128, nr=1;
pfTexture *texture = new pfTexture;
texture->setFormat(PFTEX_IMAGE_FORMAT, PFTEX_RGBA); // standard format
texture->setFormat(PFTEX_SUBLOAD_FORMAT, PF_ON);
texture->setImage((uint*)pfMalloc(comp*ns*nt*nr), comp, ns, nt, nr);
// texture environment
pfTexEnv *texenv = new pfTexEnv;
texenv->setMode(PFTE_REPLACE);
// geostate
pfGeoState *geostate = new pfGeoState;
geostate->setMode(PFSTATE_CULLFACE, PFCF_OFF);
geostate->setMode(PFSTATE_TRANSPARENCY, PFTR_OFF);
geostate->setMode(PFSTATE_ENTEXTURE, PF_ON);
geostate->setAttr(PFSTATE_TEXTURE, texture);
geostate->setAttr(PFSTATE_TEXENV, texenv);
geoset->setGState(geostate);
Volodymyr
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___________________________________________________________
Dr. Volodymyr Kindratenko ............. kindr++at++ncsa.uiuc.edu
National Center for Supercomputing Applications (NCSA)
University of Illinois, Urbana tel: 217-265-0209
M/C 476 - 152 CAB lab: 217-244-4913
605 East Springfield Avenue fax: 217-244-2909
Champaign, IL 61820
http://www.ncsa.uiuc.edu/~kindr
http://intellibadge.ncsa.uiuc.edu
___________________________________________________________
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