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GLINDEXMASK(3G) GLINDEXMASK(3G)
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(3G), glDepthMask(3G), glDrawBuffer(3G), glIndex(3G),
glIndexPointer(3G), glStencilMask(3G)
GLINDEXMASK(3G)
Man(1) output converted with
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This page was generated on Sat Sep 8 16:37:57 GMT 2007
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