glIndexMask man page on Solaris

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GLINDEXMASK(3gl)					      GLINDEXMASK(3gl)

NAME
       glIndexMask - control the writing of individual bits in the color index
       buffers

C SPECIFICATION
       void glIndexMask( GLuint mask )

PARAMETERS
       mask  Specifies a bit mask to enable and disable the writing  of	 indi‐
	     vidual  bits  in the color index buffers.	Initially, the mask is
	     all 1's.

DESCRIPTION
       glIndexMask controls the writing of individual bits in the color	 index
       buffers.	  The  least significant n bits of mask, 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 glDrawBuffer).   Initially,
       all bits are enabled for writing.

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

ASSOCIATED GETS
       glGet with argument GL_INDEX_WRITEMASK

SEE ALSO
       glColorMask, glDepthMask, glDrawBuffer, glIndex,	 glIndexPointer,  glS‐
       tencilMask

				   15 Mar 97		      GLINDEXMASK(3gl)
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