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Date: Wed, 27 Jan 93 19:10:38 MET
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From: "Michael Schroeder (Inf4 - hiwi)" <immd4.informatik.uni-erlangen.de!mlschroe>
To: cs.Princeton.EDU!rayshade-users
Subject: Bug in surface code


Hello,

in SurfaceCreate() the component 'translucency' is not initialised
to zero.  This bug can have some real strange effects.  I have a
scenefile which works if I delete a 'translate 0 0 0' statement.
It all depends on the malloc() implementation.

Michael.


P.S.: If somebody is interested in testing my multi-csg code,
      look in ftp.uni-erlangen.de:pub/graphics/rayshade/multicsg.
      The patch fixes also a problem with the shadowcache.
      I've sent this code to Craig and he will put it in
      the next release...

---------------------------------------------------------------
Michael Schroeder    mlschroe@faui43.informatik.uni-erlangen.de
main(a){while(a=~getchar())putchar(~a-1/(~(a|32)/13*2-11)*13);}
      

*** surface.c.orig	Tue Jan 19 16:51:20 1993
--- surface.c	Tue Jan 19 16:51:23 1993
***************
*** 46,52 ****
  	stmp->srexp = stmp->stexp = DEFAULT_PHONGPOW;
  	stmp->statten = 1.;	/* No attenuation by default */
  
! 	stmp->reflect = stmp->transp = 0.;
  
  	stmp->noshadow = FALSE;
  
--- 46,52 ----
  	stmp->srexp = stmp->stexp = DEFAULT_PHONGPOW;
  	stmp->statten = 1.;	/* No attenuation by default */
  
! 	stmp->reflect = stmp->transp = stmp->translucency = 0.;
  
  	stmp->noshadow = FALSE;


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