fglclearstencil.html

来自「计算机图形学～想必是很多人需要的～在此共享一下」· HTML 代码 · 共 59 行

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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>fglClearStencil</STRONG> - specify the	clear value for	the stencil	  buffer     <STRONG>FORTRAN</STRONG> <STRONG>SPECIFICATION</STRONG>	  SUBROUTINE <STRONG>fglClearStencil</STRONG>( INTEGER*4	<EM>s</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>s</EM>  Specifies the index used when the stencil buffer is	     cleared.  The initial value is 0.     <STRONG>DESCRIPTION</STRONG>	  <STRONG>fglClearStencil</STRONG> specifies the	index used by <STRONG>fglClear</STRONG> to	  clear	the stencil buffer.  <EM>s</EM> is masked with 2m-1, where m is	  the number of	bits in	the stencil buffer.     <STRONG>ERRORS</STRONG>	  <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>fglClearStencil</STRONG> is	  executed between the execution of <STRONG>fglBegin</STRONG> and the	  corresponding	execution of <STRONG>fglEnd</STRONG>.     <STRONG>ASSOCIATED</STRONG>	<STRONG>GETS</STRONG>	  <STRONG>fglGet</STRONG> with argument <STRONG>GL_STENCIL_CLEAR_VALUE</STRONG>	  <STRONG>fglGet</STRONG> with argument <STRONG>GL_STENCIL_BITS</STRONG>     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>fglClear</STRONG></PRE></BODY></HTML>

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