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4 Reference Pages
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.69.1" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><a id=
"glClampColor"></a><div class=
"titlepage"></div><div class=
"refnamediv"><h2>Name
</h2><p>glClampColor — specify whether data read via
<a href=
"glReadPixels.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glReadPixels
</span></span></a> should be clamped
</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">glClampColor
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">target
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">clamp
</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>target
</code></em></span></dt><dd><p>
5 Target for color clamping.
<em class=
"parameter"><code>target
</code></em> must be
<code class=
"constant">GL_CLAMP_READ_COLOR
</code>.
6 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>clamp
</code></em></span></dt><dd><p>
7 Specifies whether to apply color clamping.
<em class=
"parameter"><code>clamp
</code></em> must be
<code class=
"constant">GL_TRUE
</code> or
<code class=
"constant">GL_FALSE
</code>.
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">glClampColor
</code> controls color clamping that is performed during
<a href=
"glReadPixels.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glReadPixels
</span></span></a>.
10 <em class=
"parameter"><code>target
</code></em> must be
<code class=
"constant">GL_CLAMP_READ_COLOR
</code>. If
<em class=
"parameter"><code>clamp
</code></em> is
<code class=
"constant">GL_TRUE
</code>,
11 read color clamping is enabled; if
<em class=
"parameter"><code>clamp
</code></em> is
<code class=
"constant">GL_FALSE
</code>, read color clamping is disabled. If
12 <em class=
"parameter"><code>clamp
</code></em> is
<code class=
"constant">GL_FIXED_ONLY
</code>, read color clamping is enabled only if the selected read buffer has
13 fixed point components and disabled otherwise.
14 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
15 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>target
</code></em> is not
16 <code class=
"constant">GL_CLAMP_READ_COLOR
</code>.
18 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>clamp
</code></em> is not
<code class=
"constant">GL_TRUE
</code> or
<code class=
"constant">GL_FALSE
</code>.
19 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"associatedgets"></a><h2>Associated Gets
</h2><p>
20 <a href=
"glGet.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glGet
</span></span></a> with argument
<code class=
"constant">GL_CLAMP_READ_COLOR
</code>.
21 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
22 Copyright
<span class=
"trademark"></span>©
2010 Khronos Group.
23 This material may be distributed subject to the terms and conditions set forth in
24 the Open Publication License, v
1.0,
8 June
1999.
25 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
26 </p></div></div></body></html>