Sophie: Io-language-graphics-and-sound-20080330-6.fc15 i686

Io-language-graphics-and-sound-20080330-6.fc15.i686.rpm

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     <STRONG>NAME</STRONG>
	  <STRONG>glIndexMask</STRONG> -	control	the writing of individual bits in the
	  color	index buffers


     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>
	  void <STRONG>glIndexMask</STRONG>( GLuint <EM>mask</EM>	)


     <STRONG>PARAMETERS</STRONG>
	  <EM>mask</EM>	Specifies a bit	mask to	enable and disable the writing
		of individual bits in the color	index buffers.
		Initially, the mask is all 1's.

     <STRONG>DESCRIPTION</STRONG>
	  <STRONG>glIndexMask</STRONG> controls the writing of individual bits in the
	  color	index buffers.	The least significant n	bits of	<EM>mask</EM>,
	  where	n is the number	of bits	in a color index buffer,
	  specify a mask.  Where a 1 (one) appears in the mask,	it's
	  possible to write to the corresponding bit in	the color
	  index	buffer (or buffers). Where a 0 (zero) appears, the
	  corresponding	bit is write-protected.

	  This mask is used only in color index	mode, and it affects
	  only the buffers currently selected for writing (see
	  <STRONG>glDrawBuffer</STRONG>).  Initially, all bits are enabled for writing.

     <STRONG>ERRORS</STRONG>
	  <STRONG>GL_INVALID_OPERATION</STRONG> is generated if <STRONG>glIndexMask</STRONG> is executed
	  between the execution	of <STRONG>glBegin</STRONG> and the corresponding
	  execution of <STRONG>glEnd</STRONG>.

     <STRONG>ASSOCIATED</STRONG>	<STRONG>GETS</STRONG>
	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_INDEX_WRITEMASK</STRONG>

     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>
	  <STRONG>glColorMask</STRONG>, <STRONG>glDepthMask</STRONG>, <STRONG>glDrawBuffer</STRONG>, <STRONG>glIndex</STRONG>,
	  <STRONG>glIndexPointer</STRONG>, <STRONG>glStencilMask</STRONG>














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