OpenGL man pages
glStencilMask - control the writing of individual bits in the stencil
void glStencilMask( GLuint mask )
mask Specifies a bit mask to enable and disable writing of individual bits
in the stencil planes. Initially, the mask is all ones.
glStencilMask controls the writing of individual bits in the stencil
planes. The least significant n bits of mask, where n is the number of
bits in the stencil buffer, specify a mask. Wherever a one appears in the
mask, the corresponding bit in the stencil buffer is made writable. Where
a zero appears, the bit is write-protected. Initially, all bits are
enabled for writing.
GL_INVALID_OPERATION is generated if glStencilMask is executed between the
execution of glBegin and the corresponding execution of glEnd.
glGet with argument GL_STENCIL_WRITEMASK
glGet with argument GL_STENCIL_BITS
glColorMask, glDepthMask, glIndexMask, glStencilFunc, glStencilOp
Fri Dec 6 11:18:03 EST 1996
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