GLPOLYGONMODE(3G)

    .SH "NAME" glPolygonMode - select a polygon rasterization mode
    .SH "C SPECIFICATION"

            .HP u void glPolygonMode(GLenum face, GLenum mode);

    .SH "PARAMETERS"

        .PP face

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

            .RE
            .PP 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.

                .RE

            .SH "DESCRIPTION"
                .PP 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.
                .PP Three modes are defined and can be specified in mode:

                    .PP 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.

                        .RE
                        .PP 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.

                            .RE
                            .PP GL_FILL

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

                                .RE

                        .SH "EXAMPLES"
                            .PP To draw a surface with outlined polygons, call

                        glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

                        .SH "NOTES"
                            .PP 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.

                        .SH "ERRORS"
                            .PP GL_INVALID_ENUM is generated if either face or mode is not an accepted value.

                        .SH "ASSOCIATED GETS"
                            .PP glGet() with argument GL_POLYGON_MODE

                        .SH "VERSION SUPPORT"
                            .TS allbox tab(:); lB cB s s s s s s s s s s s lB cB cB cB cB cB cB cB cB cB cB cB cB. T{ T}:T{ OpenGL Version T} T{ Function / Feature Name T}:T{ 2.0 T}:T{ 2.1 T}:T{ 3.0 T}:T{ 3.1 T}:T{ 3.2 T}:T{ 3.3 T}:T{ 4.0 T}:T{ 4.1 T}:T{ 4.2 T}:T{ 4.3 T}:T{ 4.4 T}:T{ 4.5 T} l c c c c c c c c c c c c. T{ glPolygonMode T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}:T{ ✔ T}

                        .SH "SEE ALSO"
                            .PP glLineWidth(), glPointSize()

                        .SH "COPYRIGHT"
                            .PP Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2014 Khronos Group. This document is licensed under the SGI Free Software B License. For details, see https://khronos.org/registry/OpenGL-Refpages/LICENSES/LicenseRef-FreeB.txt.

COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
Copyright © 2010-2014 Khronos Group