GLSTENCILMASK(3G)GLSTENCILMASK(3G)NAME
glStencilMask - control the writing of individual bits in the stencil planes
C SPECIFICATION
void glStencilMask( GLuint mask )
PARAMETERS
mask Specifies a bit mask to enable and disable writing of individual bits in the stencil planes. Initially, the mask is all 1's.
DESCRIPTION
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 sten-
cil buffer. Where a 0 appears, the corresponding bit is write-protected. Initially, all bits are enabled for writing.
ERRORS
GL_INVALID_OPERATION is generated if glStencilMask is executed between the execution of glBegin and the corresponding execution of glEnd.
ASSOCIATED GETS
glGet with argument GL_STENCIL_WRITEMASK
glGet with argument GL_STENCIL_BITS
SEE ALSO
glColorMask, glDepthMask, glIndexMask, glStencilFunc, glStencilOp
GLSTENCILMASK(3G)
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GLSTENCILMASK(3G) [FIXME: manual] GLSTENCILMASK(3G)NAME
glStencilMask - control the front and back writing of individual bits in the stencil planes
C SPECIFICATION
void glStencilMask(GLuint mask);
PARAMETERS
mask
Specifies a bit mask to enable and disable writing of individual bits in the stencil planes. Initially, the mask is all 1's.
DESCRIPTION
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.
NOTES
glStencilMask() is the same as calling glStencilMaskSeparate() with face set to GL_FRONT_AND_BACK.
ASSOCIATED GETS
glGet() with argument GL_STENCIL_WRITEMASK, GL_STENCIL_BACK_WRITEMASK, or GL_STENCIL_BITS
SEE ALSO
glColorMask(), glDepthMask(), glStencilFunc(), glStencilFuncSeparate(), glStencilMaskSeparate(), glStencilOp(), glStencilOpSeparate()
COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
[FIXME: source] 05/30/2012 GLSTENCILMASK(3G)
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