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GLINDEXMASK() GLINDEXMASK() NAME glIndexMask - control the writing of individual bits in the color index buffers C SPECIFICATION void glIndexMask( GLuint mask ) delim $$ 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 num- ber 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 GLINDEXMASK()
NAME | C SPECIFICATION | PARAMETERS | DESCRIPTION | ERRORS | ASSOCIATED GETS | SEE ALSO
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