GlStencilMask
_glStencilMask: control the front and back writing of individual bits in the stencil planes
Syntax
SUB _glStencilMask (BYVAL mask AS _UNSIGNED LONG) 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 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. Template:KW sets both front and back stencil writemasks to the same values. Use Template:KW to set front and back stencil writemasks to different values.
Template:KW is the same as calling Template:KW with face set to Template:KW.
Template:KW with argument Template:KW, Template:KW, or Template:KW
See also
SUB _GL Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW, Template:KW
Copyright 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/.