upstream-doc/man4/xhtml/glUniformSubroutines.xml

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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>glUniformSubroutines - OpenGL 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="glUniformSubroutines"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glUniformSubroutines — load active subroutine uniforms</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">glUniformSubroutinesuiv</b>(</code></td><td>GLenum  </td><td><var class="pdparam">shadertype</var>, </td></tr><tr><td> </td><td>GLsizei  </td><td><var class="pdparam">count</var>, </td></tr><tr><td> </td><td>const GLuint * </td><td><var class="pdparam">indices</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>shadertype</code></em></span></dt><dd><p>
   5                     Specifies the shader stage from which to query for subroutine uniform index.
   6                     <em class="parameter"><code>shadertype</code></em>
   7                     must be one of <code class="constant">GL_VERTEX_SHADER</code>, <code class="constant">GL_TESS_CONTROL_SHADER</code>,
   8                     <code class="constant">GL_TESS_EVALUATION_SHADER</code>, <code class="constant">GL_GEOMETRY_SHADER</code> or
   9                     <code class="constant">GL_FRAGMENT_SHADER</code>.
  10                 </p></dd><dt><span class="term"><em class="parameter"><code>count</code></em></span></dt><dd><p>
  11                     Specifies the number of uniform indices stored in <em class="parameter"><code>indices</code></em>.
  12                 </p></dd><dt><span class="term"><em class="parameter"><code>indices</code></em></span></dt><dd><p>
  13                     Specifies the address of an array holding the indices to load into the shader subroutine variables.
  14                 </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
  15             <code class="function">glUniformSubroutines</code> loads all active subroutine uniforms for shader stage
  16             <em class="parameter"><code>shadertype</code></em> of the current program with subroutine indices from <em class="parameter"><code>indices</code></em>,
  17             storing <em class="parameter"><code>indices[i]</code></em> into the uniform at location <em class="parameter"><code>i</code></em>.
  18             <em class="parameter"><code>count</code></em> must be equal to the value of <code class="constant">GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS</code>
  19             for the program currently in use at shader stage <em class="parameter"><code>shadertype</code></em>. Furthermore, all values in
  20             <em class="parameter"><code>indices</code></em> must be less than the value of <code class="constant">GL_ACTIVE_SUBROUTINES</code>
  21             for the shader stage.
  22         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p>
  23             <code class="constant">GL_INVALID_OPERATION</code> is generated if no program object is current.
  24         </p><p>
  25             <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>count</code></em> is not equal to the value
  26             of <code class="constant">GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS</code> for the shader stage <em class="parameter"><code>shadertype</code></em>
  27             of the current program.
  28         </p><p>
  29             <code class="constant">GL_INVALID_VALUE</code> is generated if any value in <em class="parameter"><code>indices</code></em> is geater
  30             than or equal to the value of <code class="constant">GL_ACTIVE_SUBROUTINES</code> for the shader stage <em class="parameter"><code>shadertype</code></em>
  31             of the current program.
  32         </p><p>
  33             <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>shadertype</code></em> is not one of the accepted values.
  34         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
  35             <a href="glGetProgramStage.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramStage</span></span></a> with argument <code class="constant">GL_ACTIVE_SUBROUTINES</code>
  36         </p><p>
  37             <a href="glGetProgramStage.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramStage</span></span></a> with argument <code class="constant">GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS</code>
  38         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
  39             <a href="glGetProgram.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgram</span></span></a>,
  40             <a href="glGetActiveSubroutineUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveSubroutineUniform</span></span></a>,
  41             <a href="glGetActiveSubroutineUniformName.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveSubroutineUniformName</span></span></a>,
  42             <a href="glGetProgramStage.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramStage</span></span></a>
  43         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
  44             Copyright <span class="trademark"></span>© 2010 Khronos Group.
  45             This material may be distributed subject to the terms and conditions set forth in
  46             the Open Publication License, v 1.0, 8 June 1999.
  47             <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
  48         </p></div></div></body></html>