Query: glpolygonoffset
OS: centos
Section: 3g
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
GLPOLYGONOFFSET(3G) OpenGL Manual GLPOLYGONOFFSET(3G)NAMEglPolygonOffset - set the scale and units used to calculate depth valuesC SPECIFICATIONvoid glPolygonOffset(GLfloat factor, GLfloat units);PARAMETERSfactor 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.DESCRIPTIONWhen 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 GETSglIsEnabled() 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.SEE ALSOglDepthFunc(), glEnable(), glGet(), glIsEnabled()COPYRIGHTCopyright (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/.AUTHORSopengl.org opengl.org 06/10/2014 GLPOLYGONOFFSET(3G)
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