HCoop / clinton / guile-figl.git / blame
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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>interpolateAtSample - OpenGL Shading Language (GLSL)</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="interpolateAtSample"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>interpolateAtSample — sample a varying at the location of a specified sample</p></div><div class="refsynopsisdiv"><h2>Declaration</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr><td><code class="funcdef">float <b class="fsfunc">interpolateAtSample</b>(</code></td><td>float </td><td><var class="pdparam">interpolant</var>, </td></tr><tr><td> </td><td>int </td><td><var class="pdparam">sample</var><code>)</code>;</td></tr></table><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr><td><code class="funcdef">vec2 <b class="fsfunc">interpolateAtSample</b>(</code></td><td>vec2 </td><td><var class="pdparam">interpolant</var>, </td></tr><tr><td> </td><td>int </td><td><var class="pdparam">sample</var><code>)</code>;</td></tr></table><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" style="padding-bottom: 1em"><tr><td><code class="funcdef">vec3 <b class="fsfunc">interpolateAtSample</b>(</code></td><td>vec3 </td><td><var class="pdparam">interpolant</var>, </td></tr><tr><td> </td><td>int </td><td><var class="pdparam">sample</var><code>)</code>;</td></tr></table><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">vec4 <b class="fsfunc">interpolateAtSample</b>(</code></td><td>vec4 </td><td><var class="pdparam">interpolant</var>, </td></tr><tr><td> </td><td>int </td><td><var class="pdparam">sample</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>interpolant</code></em></span></dt><dd><p> | |
| 5 | Specifies the interpolant to be sampled at the location of sample <em class="parameter"><code>sample</code></em>. | |
| 6 | </p></dd><dt><span class="term"><em class="parameter"><code>sample</code></em></span></dt><dd><p> | |
| 7 | Specifies the index of the sample whose location will be used to sample <em class="parameter"><code>interpolant</code></em>. | |
| 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">interpolateAtSample</code> returns the value of the input varying <em class="parameter"><code>interpolant</code></em> | |
| 10 | sampled at the location of sample number <em class="parameter"><code>sample</code></em>. If multisample buffers are not available, | |
| 11 | the input varying will be evaluated at the center of the pixel. If sample <em class="parameter"><code>sample</code></em> does not | |
| 12 | exist, the position used to interpolate the input varying is undefined. | |
| 13 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="versions"></a><h2>Version Support</h2><div class="informaltable"><table border="1"><colgroup><col align="left" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /><col align="center" /></colgroup><thead><tr><th align="left"><span class="bold"><strong>Function</strong></span></th><th align="left"><span class="bold"><strong>Version 1.10</strong></span></th><th align="left"><span class="bold"><strong>Version 1.20</strong></span></th><th align="left"><span class="bold"><strong>Version 1.30</strong></span></th><th align="left"><span class="bold"><strong>Version 1.40</strong></span></th><th align="left"><span class="bold"><strong>Version 1.50</strong></span></th><th align="left"><span class="bold"><strong>Version 3.30</strong></span></th><th align="left"><span class="bold"><strong>Version 4.00</strong></span></th><th align="left"><span class="bold"><strong>Version 4.10</strong></span></th><th align="left"><span class="bold"><strong>Version 4.20</strong></span></th><th align="center"><span class="bold"><strong>Version 4.30</strong></span></th></tr><tr><th align="left">interpolateAtSample</th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>-</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th><th align="center"><span class="emphasis"><em>Y</em></span></th></tr></thead></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p> | |
| 14 | <a href="interpolateAtCentroid.xml"><span class="citerefentry"><span class="refentrytitle">interpolateAtCentroid</span></span></a>, | |
| 15 | <a href="interpolateAtOffset.xml"><span class="citerefentry"><span class="refentrytitle">interpolateAtOffset</span></span></a> | |
| 16 | </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p> | |
| 17 | Copyright <span class="trademark"></span>© 2011 Khronos Group. | |
| 18 | This material may be distributed subject to the terms and conditions set forth in | |
| 19 | the Open Publication License, v 1.0, 8 June 1999. | |
| 20 | <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>. | |
| 21 | </p></div></div></body></html> |