   About the stencil test?
  Recently , I am learning NEHE''s OpenGL tutorials.In lesson 27,the tutorial tells me to use the stencil test to case shadow onthe object.I look in MSDN Libaray,but I just can''t find out howstencil test operates.So can anyone tell me more about it?Many thanks! 
  Hey!Please give some hints.I just couldn''t sleep without get this problem illuminated.Please!Thank you very much! ;  You controll the stencil buffer with the functionglStencilMask(), glStencilOp() and glStencilFunc()Take a look at http://biology.ncsa.uiuc.edu/cgi-bin/infosrch.cgi?cmd=getdoc&coll=0650&db=bks&fname=/SGI_Developer/OpenGL_RM/6302 for more information.   --------------------------------------------------------"If it looks good, it is good computer graphics""If it looks like computer graphics, it is bad computer graphics"Corrailcorrail@gmx.atICQ#59184081 ;   Thank you,  Corrail! 