glpolygonmode(3g) [debian man page]

GLPOLYGONMODE(3G)						  [FIXME: manual]						 GLPOLYGONMODE(3G)

NAME

       glPolygonMode - select a polygon rasterization mode

C SPECIFICATION

       void glPolygonMode(GLenum face, GLenum mode);

PARAMETERS

       face
	   Specifies the polygons that mode applies to. Must be GL_FRONT_AND_BACK for front- and back-facing polygons.

       mode
	   Specifies how polygons will be rasterized. Accepted values are GL_POINT, GL_LINE, and GL_FILL. The initial value is GL_FILL for both
	   front- and back-facing polygons.

DESCRIPTION

       glPolygonMode controls the interpretation of polygons for rasterization.  face describes which polygons mode applies to: both front and
       back-facing polygons (GL_FRONT_AND_BACK). The polygon mode affects only the final rasterization of polygons. In particular, a polygon's
       vertices are lit and the polygon is clipped and possibly culled before these modes are applied.

       Three modes are defined and can be specified in mode:

       GL_POINT
	   Polygon vertices that are marked as the start of a boundary edge are drawn as points. Point attributes such as GL_POINT_SIZE and
	   GL_POINT_SMOOTH control the rasterization of the points. Polygon rasterization attributes other than GL_POLYGON_MODE have no effect.

       GL_LINE
	   Boundary edges of the polygon are drawn as line segments. Line attributes such as GL_LINE_WIDTH and GL_LINE_SMOOTH control the
	   rasterization of the lines. Polygon rasterization attributes other than GL_POLYGON_MODE have no effect.

       GL_FILL
	   The interior of the polygon is filled. Polygon attributes such as GL_POLYGON_SMOOTH control the rasterization of the polygon.

EXAMPLES

       To draw a surface with outlined polygons, call

	   glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

NOTES

       Vertices are marked as boundary or nonboundary with an edge flag. Edge flags are generated internally by the GL when it decomposes triangle
       stips and fans.

ERRORS

       GL_INVALID_ENUM is generated if either face or mode is not an accepted value.

ASSOCIATED GETS

       glGet() with argument GL_POLYGON_MODE

SEE ALSO

       glLineWidth(), glPointSize()

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							 GLPOLYGONMODE(3G)

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GLSTENCILMASKSEPARAT(3G)					  [FIXME: 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 (C) 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/.

[FIXME: source] 						    05/30/2012						  GLSTENCILMASKSEPARAT(3G)

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glpolygonmode(3g) [debian man page]

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