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<title>gl_PointCoord - OpenGL 4 Reference Pages</title>
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<div class="refentry" id="gl_PointCoord">
<div class="titlepage"/>
<div class="refnamediv">
<h2>Name</h2>
<p>gl_PointCoord — contains the coordinate of a fragment within a point</p>
</div>
<div class="refsynopsisdiv">
<h2>Declaration</h2>
<code class="fieldsynopsis"><span class="modifier">in </span><span class="type">vec2 </span><span class="varname">gl_PointCoord </span>;</code>
</div>
<div class="refsect1" id="description">
<h2>Description</h2>
<p>
<code class="varname">gl_PointCoord</code> is a fragment language input variable that contains
the two-dimensional coordinates indicating where within a point primitive the current
fragment is located. If the current primitive is not a point, then values read
from <code class="varname">gl_PointCoord</code> are undefined.
</p>
<p>
<code class="varname">gl_PointCoord.s</code> ranges from 0.0 to 1.0 across the point horizontally
from left to right. If <code class="constant">GL_POINT_SPRITE_COORD_ORIGIN</code> is
<code class="constant">GL_LOWER_LEFT</code>, <code class="varname">gl_PointCoord.t</code> varies
from 0.0 to 1.0 vertically from bottom to top. Otherwise, if <code class="constant">GL_POINT_SPRITE_COORD_ORIGIN</code>
is <code class="constant">GL_UPPER_LEFT</code> then <code class="varname">gl_PointCoord.t</code> varies
from 0.0 to 1.0 vertically from top to bottom. The default value of <code class="constant">GL_POINT_SPRITE_COORD_ORIGIN</code>
is <code class="constant">GL_UPPER_LEFT</code>.
</p>
</div>
<div class="refsect1" id="versions">
<h2>Version Support</h2>
<div class="informaltable">
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<span class="bold"><strong>Variable Name</strong></span>
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<span class="bold"><strong>1.10</strong></span>
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<span class="bold"><strong>1.20</strong></span>
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<span class="bold"><strong>1.50</strong></span>
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<span class="bold"><strong>3.30</strong></span>
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<span class="bold"><strong>4.00</strong></span>
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<span class="bold"><strong>4.10</strong></span>
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<span class="bold"><strong>4.20</strong></span>
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<span class="bold"><strong>4.30</strong></span>
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<span class="bold"><strong>4.40</strong></span>
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<span class="bold"><strong>4.50</strong></span>
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<tbody>
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<td style="text-align: left; border-right: 2px solid ; ">gl_PointCoord</td>
<td style="text-align: center; border-right: 2px solid ; ">✔</td>
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<td style="text-align: center; border-right: 2px solid ; ">✔</td>
<td style="text-align: center; ">✔</td>
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</div>
</div>
<div class="refsect1" id="seealso">
<h2>See Also</h2>
<p>
<a class="citerefentry" href="gl_FragCoord.xhtml"><span class="citerefentry"><span class="refentrytitle">gl_FragCoord</span></span></a>,
<a class="citerefentry" href="gl_FragDepth.xhtml"><span class="citerefentry"><span class="refentrytitle">gl_FragDepth</span></span></a>
</p>
</div>
<div class="refsect1" id="Copyright">
<h2>Copyright</h2>
<p>
Copyright <span class="trademark"/>© 2011-2014 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="link" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p>
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