<div class="refentry" lang="en" xml:lang="en"><a id="glEnableClientState"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glEnableClientState — enable or disable client-side capability</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glEnableClientState</b>(</code></td><td>GLenum <var class="pdparam">array</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table class="funcprototype-table"><tr><td><code class="funcdef">void <b class="fsfunc">glDisableClientState</b>(</code></td><td>GLenum <var class="pdparam">array</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></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>array</code></em>

</span></dt><dd><p>

Specifies the capability to enable or disable.

Symbolic constants

<code class="constant">GL_COLOR_ARRAY</code>,

<code class="constant">GL_NORMAL_ARRAY</code>,

<code class="constant">GL_POINT_SIZE_ARRAY_OES</code><span>,</span>

<code class="constant">GL_TEXTURE_COORD_ARRAY</code>,<span> and</span>

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

are accepted.

</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>

<code class="function">glEnableClientState</code> and

<code class="function">glDisableClientState</code>

enable or disable individual client-side capabilities. By

default, all client-side capabilities are disabled. Both

<code class="function">glEnableClientState</code> and

<code class="function">glDisableClientState</code>

take a single argument, <em class="parameter"><code>array</code></em>,

which can assume one of the following values:</p><div class="variablelist"><dl><dt><span class="term">

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

</span></dt><dd><p>If enabled, the color array is enabled for writing

and used during rendering when

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

<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See

<a class="citerefentry" href="glColorPointer"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.</p></dd><dt><span class="term">

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

</span></dt><dd><p>If enabled, the normal array is enabled for writing

and used during rendering when

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

<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See

<a class="citerefentry" href="glNormalPointer"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.</p></dd><dt><span class="term">

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

</span></dt><dd><p>

If enabled, the point size array controls the sizes used

to render points and point sprites. In this case the point

size defined by <a class="citerefentry" href="glPointSize"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>

is ignored.

The point sizes supplied in the point size arrays will be

the sizes used to render both points and point sprites.

See <a class="citerefentry" href="glPointSize"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>

</p></dd><dt><span class="term">

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

</span></dt><dd><p>If enabled, the texture coordinate array is enabled

for writing and used during rendering when

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

<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See

<a class="citerefentry" href="glTexCoordPointer"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.</p></dd><dt><span class="term">

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

</span></dt><dd><p>If enabled, the vertex array is enabled for writing

and used during rendering when

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

<a class="citerefentry" href="glDrawElements"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a> is called. See

<a class="citerefentry" href="glVertexPointer"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>Enabling and disabling

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

affects the active client texture unit. The active client

texture unit is controlled with

<a class="citerefentry" href="glClientActiveTexture"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_ENUM</code> is generated if

<em class="parameter"><code>array</code></em> is not an accepted value.</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>

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

</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>

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

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

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

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

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

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

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

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

</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="copyright"></a><h2>Copyright</h2><p>

Copyright © 2003-2004

Silicon Graphics, Inc. This document is licensed under the SGI

Free Software B License. For details, see

<a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.

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