<div class="refentry" title="glCreateShader"><a id="glCreateShader"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glCreateShader — Creates a shader object</p></div><div class="refsynopsisdiv" title="C Specification"><h2>C Specification</h2><div class="funcsynopsis"><table class="funcprototype-table"><tr><td><code class="funcdef">GLuint <b class="fsfunc">glCreateShader</b>(</code></td><td>GLenum <var class="pdparam">shaderType</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>shaderType</code></em></span></dt><dd><p>Specifies the type of shader to be created.

Must be one of <code class="constant">GL_VERTEX_SHADER</code>,

<code class="constant">GL_GEOMETRY_SHADER</code>

or <code class="constant">GL_FRAGMENT_SHADER</code>.</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="description"></a><h2>Description</h2><p><code class="function">glCreateShader</code> creates an empty

shader object and returns a non-zero value by which it can be

referenced. A shader object is used to maintain the source code

strings that define a shader. <em class="parameter"><code>shaderType</code></em>

indicates the type of shader to be created. Three types of shaders

are supported. A shader of type

<code class="constant">GL_VERTEX_SHADER</code> is a shader that is

intended to run on the programmable vertex processor. A shader of type

<code class="constant">GL_GEOMETRY_SHADER</code> is a shader that is intended to

run on the programmable geometry processor. A shader of

type <code class="constant">GL_FRAGMENT_SHADER</code> is a shader that is

intended to run on the programmable fragment processor.</p><p>When created, a shader object's

<code class="constant">GL_SHADER_TYPE</code> parameter is set to either

<code class="constant">GL_VERTEX_SHADER</code>, <code class="constant">GL_GEOMETRY_SHADER</code>

or <code class="constant">GL_FRAGMENT_SHADER</code>, depending on the value

of <em class="parameter"><code>shaderType</code></em>.</p></div><div class="refsect1" title="Notes"><a id="notes"></a><h2>Notes</h2><p>Like buffer and texture objects, the name space for

shader objects may be shared across a set of contexts, as long

as the server sides of the contexts share the same address

space. If the name space is shared across contexts, any attached

objects and the data associated with those attached objects are

shared as well.</p><p>Applications are responsible for providing the

synchronization across API calls when objects are accessed from

different execution threads.</p></div><div class="refsect1" title="Errors"><a id="errors"></a><h2>Errors</h2><p>This function returns 0 if an error occurs creating the

shader object.</p><p><code class="constant">GL_INVALID_ENUM</code> is generated if

<em class="parameter"><code>shaderType</code></em> is not an accepted value.</p></div><div class="refsect1" title="Associated Gets"><a id="associatedgets"></a><h2>Associated Gets</h2><p><a class="citerefentry" href="glGetShader"><span class="citerefentry"><span class="refentrytitle">glGetShader</span></span></a>

with a valid shader object and the parameter to be queried</p><p><a class="citerefentry" href="glGetShaderInfoLog"><span class="citerefentry"><span class="refentrytitle">glGetShaderInfoLog</span></span></a>

with a valid shader object</p><p><a class="citerefentry" href="glGetShaderSource"><span class="citerefentry"><span class="refentrytitle">glGetShaderSource</span></span></a>

with a valid shader object</p><p><a class="citerefentry" href="glIsShader"><span class="citerefentry"><span class="refentrytitle">glIsShader</span></span></a></p></div><div class="refsect1" title="See Also"><a id="seealso"></a><h2>See Also</h2><p><a class="citerefentry" href="glAttachShader"><span class="citerefentry"><span class="refentrytitle">glAttachShader</span></span></a>,

<a class="citerefentry" href="glCompileShader"><span class="citerefentry"><span class="refentrytitle">glCompileShader</span></span></a>,

<a class="citerefentry" href="glDeleteShader"><span class="citerefentry"><span class="refentrytitle">glDeleteShader</span></span></a>,

<a class="citerefentry" href="glDetachShader"><span class="citerefentry"><span class="refentrytitle">glDetachShader</span></span></a>,

<a class="citerefentry" href="glShaderSource"><span class="citerefentry"><span class="refentrytitle">glShaderSource</span></span></a>

</p></div><div class="refsect1" title="Copyright"><div id="Copyright"><h2>Copyright</h2><p>

Copyright © 2003-2005 3Dlabs Inc. Ltd.

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="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.

</p></div></div></div>