glIndexMask

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 individual bits in the color index buffers. Initially, the mask is all ones.

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. Wherever a one appears in the mask, the corresponding bit in the color index buffer (or buffers) is made writable. Where a zero appears, the bit is write-protected.

This mask is used only in color index mode, and it affects only the buffers currently selected for writing (see glBegin and the corresponding call to glEnd.

ASSOCIATED GETS

glGet with argument GL_INDEX_WRITEMASK

SEE ALSO

glColorMask, glDepthMask, glDrawBuffer, glIndex, glStencilMask


back to the OpenGL index page


© 1995 Uwe Behrens. All rights reserved.