| 1 | <?xml version="1.0" encoding="UTF-8"?> |
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| 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>glClearColor</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glClearColor"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glClearColor — specify clear values for the color buffers</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glClearColor</b>(</code></td><td>GLclampf </td><td><var class="pdparam">red</var>, </td></tr><tr><td> </td><td>GLclampf </td><td><var class="pdparam">green</var>, </td></tr><tr><td> </td><td>GLclampf </td><td><var class="pdparam">blue</var>, </td></tr><tr><td> </td><td>GLclampf </td><td><var class="pdparam">alpha</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>red</code></em>, </span><span class="term"><em class="parameter"><code>green</code></em>, </span><span class="term"><em class="parameter"><code>blue</code></em>, </span><span class="term"><em class="parameter"><code>alpha</code></em></span></dt><dd><p> |
| 5 | Specify the red, green, blue, and alpha values used when the |
| 6 | color buffers are cleared. |
| 7 | The initial values are all 0. |
| 8 | </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p> |
| 9 | <code class="function">glClearColor</code> specifies the red, |
| 10 | green, |
| 11 | blue, |
| 12 | and alpha values used by <a href="glClear.xml"><span class="citerefentry"><span class="refentrytitle">glClear</span></span></a> to clear the color buffers. |
| 13 | Values specified by <code class="function">glClearColor</code> are clamped to the range |
| 14 | <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> |
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| 20 | </mml:math>. |
| 21 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p> |
| 22 | <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COLOR_CLEAR_VALUE</code> |
| 23 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p> |
| 24 | <a href="glClear.xml"><span class="citerefentry"><span class="refentrytitle">glClear</span></span></a> |
| 25 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> |
| 26 | Copyright <span class="trademark"></span>© 1991-2006 |
| 27 | Silicon Graphics, Inc. This document is licensed under the SGI |
| 28 | Free Software B License. For details, see |
| 29 | <a href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>. |
| 30 | </p></div></div></body></html> |