/usr/share/doc/opengl-4-html-doc/glGetSubroutineUniformLocation.xml is in opengl-4-html-doc 1.0~svn22917-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 | <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"><!-- saved from url=(0013)about:internet -->
<?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>glGetSubroutineUniformLocation - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div class="refentry"><a id="glGetSubroutineUniformLocation"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glGetSubroutineUniformLocation — retrieve the location of a subroutine uniform of a given shader stage within a program</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">GLint <strong class="fsfunc">glGetSubroutineUniformLocation</strong>(</code></td><td>GLuint <var class="pdparam">program</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">shadertype</var>, </td></tr><tr><td> </td><td>const GLchar *<var class="pdparam">name</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>program</code></em></span></dt><dd><p>
Specifies the name of the program containing shader stage.
</p></dd><dt><span class="term"><em class="parameter"><code>shadertype</code></em></span></dt><dd><p>
Specifies the shader stage from which to query for subroutine uniform index.
<em class="parameter"><code>shadertype</code></em>
must be one of <code class="constant">GL_VERTEX_SHADER</code>, <code class="constant">GL_TESS_CONTROL_SHADER</code>,
<code class="constant">GL_TESS_EVALUATION_SHADER</code>, <code class="constant">GL_GEOMETRY_SHADER</code> or
<code class="constant">GL_FRAGMENT_SHADER</code>.
</p></dd><dt><span class="term"><em class="parameter"><code>name</code></em></span></dt><dd><p>
Specifies the name of the subroutine uniform whose index to query.
</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p>
<code class="function">glGetSubroutineUniformLocation</code> returns the location of the subroutine uniform variable
<em class="parameter"><code>name</code></em> in the shader stage of type <em class="parameter"><code>shadertype</code></em> attached to
<em class="parameter"><code>program</code></em>, with behavior otherwise identical to
<a class="citerefentry" href="glGetUniformLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniformLocation</span></span></a>.
</p><p>
If <em class="parameter"><code>name</code></em> is not the name of a subroutine uniform in the shader stage, -1
is returned, but no error is generated. If <em class="parameter"><code>name</code></em> is the name of a subroutine uniform in the shader stage,
a value between zero and the value of <code class="constant">GL_ACTIVE_SUBROUTINE_LOCATIONS</code> minus one will be returned.
Subroutine locations are assigned using consecutive integers in the range from zero to the value
of <code class="constant">GL_ACTIVE_SUBROUTINE_LOCATIONS</code> minus one for the shader stage. For active subroutine uniforms
declared as arrays, the declared array elements are assigned consecutive locations.
</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p>
<code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>shadertype</code></em> or <em class="parameter"><code>pname</code></em>
is not one of the accepted values.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>program</code></em> is not the name of an
existing program object.
</p></div><div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p>
<a class="citerefentry" href="glGetProgram.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgram</span></span></a>,
<a class="citerefentry" href="glGetActiveSubroutineUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveSubroutineUniform</span></span></a>,
<a class="citerefentry" href="glGetActiveSubroutineUniformName.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveSubroutineUniformName</span></span></a>,
<a class="citerefentry" href="glGetUniformLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniformLocation</span></span></a>
</p></div><div class="refsect1"><a id="Copyright"></a><h2>Copyright</h2><p>
Copyright <span class="trademark"></span>© 2010 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="ulink" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p></div></div></body></html>
|