1GLPOLYGONMODE(3G)                OpenGL Manual               GLPOLYGONMODE(3G)
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NAME

6       glPolygonMode - select a polygon rasterization mode
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C SPECIFICATION

9       void glPolygonMode(GLenum face, GLenum mode);
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PARAMETERS

12       face
13           Specifies the polygons that mode applies to. Must be
14           GL_FRONT_AND_BACK for front- and back-facing polygons.
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16       mode
17           Specifies how polygons will be rasterized. Accepted values are
18           GL_POINT, GL_LINE, and GL_FILL. The initial value is GL_FILL for
19           both front- and back-facing polygons.
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DESCRIPTION

22       glPolygonMode controls the interpretation of polygons for
23       rasterization.  face describes which polygons mode applies to: both
24       front and back-facing polygons (GL_FRONT_AND_BACK). The polygon mode
25       affects only the final rasterization of polygons. In particular, a
26       polygon's vertices are lit and the polygon is clipped and possibly
27       culled before these modes are applied.
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29       Three modes are defined and can be specified in mode:
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31       GL_POINT
32           Polygon vertices that are marked as the start of a boundary edge
33           are drawn as points. Point attributes such as GL_POINT_SIZE and
34           GL_POINT_SMOOTH control the rasterization of the points. Polygon
35           rasterization attributes other than GL_POLYGON_MODE have no effect.
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37       GL_LINE
38           Boundary edges of the polygon are drawn as line segments. Line
39           attributes such as GL_LINE_WIDTH and GL_LINE_SMOOTH control the
40           rasterization of the lines. Polygon rasterization attributes other
41           than GL_POLYGON_MODE have no effect.
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43       GL_FILL
44           The interior of the polygon is filled. Polygon attributes such as
45           GL_POLYGON_SMOOTH control the rasterization of the polygon.
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EXAMPLES

48       To draw a surface with outlined polygons, call
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50           glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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NOTES

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

60       GL_INVALID_ENUM is generated if either face or mode is not an accepted
61       value.
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ASSOCIATED GETS

64       glGet() with argument GL_POLYGON_MODE
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SEE ALSO

67       glLineWidth(), glPointSize()
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70       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
71       under the SGI Free Software B License. For details, see
72       http://oss.sgi.com/projects/FreeB/.
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AUTHORS

75       opengl.org
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79opengl.org                        06/10/2014                 GLPOLYGONMODE(3G)
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