# OpenGL.GL.EXT.polygon_offset

OpenGL extension EXT.polygon_offset

This module customises the behaviour of the
OpenGL.raw.GL.EXT.polygon_offset to provide a more
Python-friendly API

Overview (from the spec)

The depth values of fragments generated by rendering polygons are
displaced by an amount that is proportional to the maximum absolute
value of the depth slope of the polygon, measured and applied in window
coordinates. This displacement allows lines (or points) and polygons
in the same plane to be rendered without interaction -- the lines
rendered either completely in front of or behind the polygons
(depending on the sign of the offset factor). It also allows multiple
coplanar polygons to be rendered without interaction, if different
offset factors are used for each polygon. Applications include
rendering hidden-line images, rendering solids with highlighted edges,
and applying `decals' to surfaces.

The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/polygon_offset.txt

## Functions

## Constants

GL_POLYGON_OFFSET_BIAS_EXT (32825)

GL_POLYGON_OFFSET_EXT (32823)

GL_POLYGON_OFFSET_FACTOR_EXT (32824)