GLSTENCILMASKSEPARAT - Online Linux Manual PageSection : 3G
Updated : 01/20/2022
Source : [FIXME: source]
Note : [FIXME: manual]

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NAMEglStencilMaskSeparate − control the front and/or back writing of individual bits in the stencil planes

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C SPECIFICATIONvoid glStencilMaskSeparate(GLenum face, GLuint mask);

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PARAMETERSface 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​.

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DESCRIPTIONglStencilMaskSeparate 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​.

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ERRORSGL_INVALID_ENUM is generated if face is not one of the accepted tokens​.

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ASSOCIATED GETSglGet() with argument GL_STENCIL_WRITEMASK, GL_STENCIL_BACK_WRITEMASK, or GL_STENCIL_BITS

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VERSION SUPPORT OpenGL Version Function / Feature Name 2​.0 none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'>none;'> 2​.1 3​.0 3​.1 3​.2 3​.3 4​.0 4​.1 4​.2 4​.3 4​.4 4​.5 glStencilMaskSeparate ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

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SEE ALSOglColorMask(), glDepthMask(), glStencilFunc(), glStencilFuncSeparate(), glStencilMask(), glStencilOp(), glStencilOpSeparate()

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COPYRIGHTCopyright © 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/​.

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COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
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