glStencilMask - control the front and back writing of individual bits in the stencil planes

glGet() with argument GL_STENCIL_WRITEMASK, GL_STENCIL_BACK_WRITEMASK, or GL_STENCIL_BITS

voidglStencilMask(GLuintmask);

       Copyright © 1991-2006 Silicon Graphics, Inc.
       Copyright © 2010-2014 Khronos Group

[FIXME: source]                                    11/18/2024                                  GLSTENCILMASK(3G)

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. Where a 1 appears in the
       mask, it's possible to write to the corresponding bit in the stencil buffer. Where a 0 appears, the
       corresponding bit is write-protected. Initially, all bits are enabled for writing.

       There can be two separate mask writemasks; one affects back-facing polygons, and the other affects
       front-facing polygons as well as other non-polygon primitives.  glStencilMask() sets both front and back
       stencil writemasks to the same values. Use glStencilMaskSeparate() to set front and back stencil
       writemasks to different values.

       glStencilMask - control the front and back writing of individual bits in the stencil planes

glStencilMask() is the same as calling glStencilMaskSeparate() with face set to GL_FRONT_AND_BACK.

mask
           Specifies a bit mask to enable and disable writing of individual bits in the stencil planes.
           Initially, the mask is all 1's.

glColorMask(), glDepthMask(), glStencilFunc(), glStencilFuncSeparate(), glStencilMaskSeparate(),
       glStencilOp(), glStencilOpSeparate()

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