HCoop / clinton / guile-figl.git / blame
| Commit | Line | Data |
|---|---|---|
| 7faf1d71 AW |
1 | <?xml version="1.0" encoding="UTF-8"?> |
| 2 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> | |
| 3 | <!-- saved from url=(0013)about:internet --> | |
| 4 | <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glCullFace</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div class="refentry" title="glCullFace"><a id="glCullFace"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glCullFace — specify whether front- or back-facing facets can be culled</p></div><div class="refsynopsisdiv" title="C Specification"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glCullFace</b>(</code></td><td>GLenum <var class="pdparam">mode</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Parameters"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>mode</code></em></span></dt><dd><p> | |
| 5 | Specifies whether front- or back-facing facets are candidates for culling. | |
| 6 | Symbolic constants | |
| 7 | <code class="constant">GL_FRONT</code>, <code class="constant">GL_BACK</code>, and <code class="constant">GL_FRONT_AND_BACK</code> are accepted. | |
| 8 | The initial value is <code class="constant">GL_BACK</code>. | |
| 9 | </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="description"></a><h2>Description</h2><p> | |
| 10 | <code class="function">glCullFace</code> specifies whether front- or back-facing facets are culled | |
| 11 | (as specified by <span class="emphasis"><em>mode</em></span>) when facet culling is enabled. Facet | |
| 12 | culling is initially disabled. | |
| 13 | To enable and disable facet culling, call the | |
| 14 | <a class="citerefentry" href="glEnable.xml"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a> and <a class="citerefentry" href="glDisable.xml"><span class="citerefentry"><span class="refentrytitle">glDisable</span></span></a> commands | |
| 15 | with the argument <code class="constant">GL_CULL_FACE</code>. | |
| 16 | Facets include triangles, | |
| 17 | quadrilaterals, | |
| 18 | polygons, and | |
| 19 | rectangles. | |
| 20 | </p><p> | |
| 21 | <a class="citerefentry" href="glFrontFace.xml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a> specifies which of the clockwise and counterclockwise facets | |
| 22 | are front-facing and back-facing. | |
| 23 | See <a class="citerefentry" href="glFrontFace.xml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a>. | |
| 24 | </p></div><div class="refsect1" title="Notes"><a id="notes"></a><h2>Notes</h2><p> | |
| 25 | If <em class="parameter"><code>mode</code></em> is <code class="constant">GL_FRONT_AND_BACK</code>, no facets are drawn, but other | |
| 26 | primitives such as points and lines are drawn. | |
| 27 | </p></div><div class="refsect1" title="Errors"><a id="errors"></a><h2>Errors</h2><p> | |
| 28 | <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>mode</code></em> is not an accepted value. | |
| 29 | </p></div><div class="refsect1" title="Associated Gets"><a id="associatedgets"></a><h2>Associated Gets</h2><p> | |
| 30 | <a class="citerefentry" href="glIsEnabled.xml"><span class="citerefentry"><span class="refentrytitle">glIsEnabled</span></span></a> with argument <code class="constant">GL_CULL_FACE</code> | |
| 31 | </p><p> | |
| 32 | <a class="citerefentry" href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_CULL_FACE_MODE</code> | |
| 33 | </p></div><div class="refsect1" title="See Also"><a id="seealso"></a><h2>See Also</h2><p> | |
| 34 | <a class="citerefentry" href="glEnable.xml"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a>, | |
| 35 | <a class="citerefentry" href="glFrontFace.xml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a> | |
| 36 | </p></div><div class="refsect1" title="Copyright"><a id="Copyright"></a><h2>Copyright</h2><p> | |
| 37 | Copyright <span class="trademark"></span>© 1991-2006 | |
| 38 | Silicon Graphics, Inc. This document is licensed under the SGI | |
| 39 | Free Software B License. For details, see | |
| 40 | <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. | |
| 41 | </p></div></div></body></html> |