glStencilMaskSeparate man page on RedHat
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GLSTENCILMASKSEPARAT(3G) OpenGL Manual GLSTENCILMASKSEPARAT(3G)
NAME
glStencilMaskSeparate - control the front and/or back writing of
individual bits in the stencil planes
C SPECIFICATION
void glStencilMaskSeparate(GLenum face, GLuint mask);
PARAMETERS
face
Specifies whether the front and/or back stencil writemask is
updated. Three symbolic constants are valid: GL_FRONT, GL_BACK, and
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.
DESCRIPTION
glStencilMaskSeparate 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, as if glStencilMaskSeparate()
were called with face set to GL_FRONT_AND_BACK.
ERRORS
GL_INVALID_ENUM is generated if face is not one of the accepted tokens.
ASSOCIATED GETS
glGet() with argument GL_STENCIL_WRITEMASK, GL_STENCIL_BACK_WRITEMASK,
or GL_STENCIL_BITS
SEE ALSO
glColorMask(), glDepthMask(), glStencilFunc(), glStencilFuncSeparate(),
glStencilMask(), glStencilOp(), glStencilOpSeparate()
COPYRIGHT
Copyright © 2006 Khronos Group. This material may be distributed
subject to the terms and conditions set forth in the Open Publication
License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLSTENCILMASKSEPARAT(3G)
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