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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"> | |
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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>glUniformBlockBinding</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /></head><body><div class="refentry" title="glUniformBlockBinding"><a id="glUniformBlockBinding"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glUniformBlockBinding — assign a binding point to an active uniform block</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">glUniformBlockBinding</b>(</code></td><td>GLuint <var class="pdparam">program</var>, </td></tr><tr><td> </td><td>GLuint <var class="pdparam">uniformBlockIndex</var>, </td></tr><tr><td> </td><td>GLuint <var class="pdparam">uniformBlockBinding</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>program</code></em></span></dt><dd><p> | |
5 | The name of a program object containing the active uniform block whose binding to assign. | |
6 | </p></dd><dt><span class="term"><em class="parameter"><code>uniformBlockIndex</code></em></span></dt><dd><p> | |
7 | The index of the active uniform block within <em class="parameter"><code>program</code></em> whose binding to assign. | |
8 | </p></dd><dt><span class="term"><em class="parameter"><code>uniformBlockBinding</code></em></span></dt><dd><p> | |
9 | Specifies the binding point to which to bind the uniform block with index <em class="parameter"><code>uniformBlockIndex</code></em> within <em class="parameter"><code>program</code></em>. | |
10 | </p></dd></dl></div></div><div class="refsect1" title="Description"><a id="description"></a><h2>Description</h2><p> | |
11 | Binding points for active uniform blocks are assigned using <code class="function">glUniformBlockBinding</code>. Each of a program's active uniform | |
12 | blocks has a corresponding uniform buffer binding point. <em class="parameter"><code>program</code></em> is the name of a program object for which the command | |
13 | <a class="citerefentry" href="glLinkProgram.xml"><span class="citerefentry"><span class="refentrytitle">glLinkProgram</span></span></a> has been issued in the past. | |
14 | </p><p> | |
15 | If successful, <code class="function">glUniformBlockBinding</code> specifies that <em class="parameter"><code>program</code></em> will use the data store of the | |
16 | buffer object bound to the binding point <em class="parameter"><code>uniformBlockBinding</code></em> to extract the values of the uniforms in the | |
17 | uniform block identified by <em class="parameter"><code>uniformBlockIndex</code></em>. | |
18 | </p><p> | |
19 | When a program object is linked or re-linked, the uniform buffer object binding point assigned to each of its active uniform blocks is reset to zero. | |
20 | </p></div><div class="refsect1" title="Errors"><a id="errors"></a><h2>Errors</h2><p> | |
21 | <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>uniformBlockIndex</code></em> is not an active uniform block index of <em class="parameter"><code>program</code></em>. | |
22 | </p><p> | |
23 | <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>uniformBlockBinding</code></em> is greater than or equal to the value of <code class="constant">GL_MAX_UNIFORM_BUFFER_BINDINGS</code>. | |
24 | </p><p> | |
25 | <code class="constant">GL_INVALID_VALUE</code> is generated <em class="parameter"><code>program</code></em> is not the name of a program object generated by the GL. | |
26 | </p></div><div class="refsect1" title="Notes"><a id="notes"></a><h2>Notes</h2><p> | |
27 | <code class="function">glUniformBlockBinding</code> is available only if the GL version is 3.1 or greater. | |
28 | </p></div><div class="refsect1" title="Associated Gets"><a id="associatedgets"></a><h2>Associated Gets</h2><p> | |
29 | <a class="citerefentry" href="glGetActiveUniformBlock.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveUniformBlock</span></span></a> with argument <code class="constant">GL_UNIFORM_BLOCK_BINDING</code> | |
30 | </p></div><div class="refsect1" title="See Also"><a id="seealso"></a><h2>See Also</h2><p> | |
31 | <a class="citerefentry" href="glLinkProgram.xml"><span class="citerefentry"><span class="refentrytitle">glLinkProgram</span></span></a>, | |
32 | <a class="citerefentry" href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>, | |
33 | <a class="citerefentry" href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>, | |
34 | <a class="citerefentry" href="glGetActiveUniformBlock.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveUniformBlock</span></span></a> | |
35 | </p></div><div class="refsect1" title="Copyright"><a id="Copyright"></a><h2>Copyright</h2><p> | |
36 | Copyright <span class="trademark"></span>© 2010 Khronos Group. | |
37 | This material may be distributed subject to the terms and conditions set forth in | |
38 | the Open Publication License, v 1.0, 8 June 1999. | |
39 | <a class="ulink" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>. | |
40 | </p></div></div></body></html> |