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

NAME
       glPolygonOffset - set the scale and units used to calculate depth
       values

C SPECIFICATION
       void glPolygonOffset(GLfloat factor, GLfloat units);

PARAMETERS
       factor
           Specifies a scale factor that is used to create a variable depth
           offset for each polygon. The initial value is 0.

       units
           Is multiplied by an implementation-specific value to create a
           constant depth offset. The initial value is 0.

DESCRIPTION
       When GL_POLYGON_OFFSET_FILL, GL_POLYGON_OFFSET_LINE, or
       GL_POLYGON_OFFSET_POINT is enabled, each fragment's depth value will be
       offset after it is interpolated from the depth values of the
       appropriate vertices. The value of the offset is factor x DZ + r x
       units, where DZ is a measurement of the change in depth relative to the
       screen area of the polygon, and r is the smallest value that is
       guaranteed to produce a resolvable offset for a given implementation.
       The offset is added before the depth test is performed and before the
       value is written into the depth buffer.

       glPolygonOffset is useful for rendering hidden-line images, for
       applying decals to surfaces, and for rendering solids with highlighted
       edges.

ASSOCIATED GETS
       glIsEnabled() with argument GL_POLYGON_OFFSET_FILL,
       GL_POLYGON_OFFSET_LINE, or GL_POLYGON_OFFSET_POINT.

       glGet() with argument GL_POLYGON_OFFSET_FACTOR or
       GL_POLYGON_OFFSET_UNITS.

VERSION SUPPORT

       +----------------+-----------------------------------------------------------------------+
       |                |                            OpenGL Version                             |
       +----------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |Function /      | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
       |Feature Name    |     |     |     |     |     |     |     |     |     |     |     |     |
       +----------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |glPolygonOffset | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> | <?> |
       +----------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

SEE ALSO
       glDepthFunc(), glEnable(), glGet(), glIsEnabled()

COPYRIGHT
       Copyright (C) 1991-2006 Silicon Graphics, Inc. Copyright (C) 2010-2014
       Khronos Group. This document is licensed under the SGI Free Software B
       License. For details, see http://oss.sgi.com/projects/FreeB/.

COPYRIGHT
       Copyright (C) 1991-2006 Silicon Graphics, Inc.
       Copyright (C) 2010-2014 Khronos Group

[FIXME: source]                   05/21/2022               GLPOLYGONOFFSET(3G)