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<div class="textblock"><code>#include <<a class="el" href="a01157.html">osg/Export</a>></code><br/>
<code>#include <stdlib.h></code><br/>
<code>#include <string.h></code><br/>
<code>#include <string></code><br/>
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<tr><td colspan="2"><h2><a name="namespaces"></a>
Namespaces</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">namespace  </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html">osg</a></td></tr>
<p><tr><td class="mdescLeft"> </td><td class="mdescRight"><p>The core osg library provides the basic scene graph classes such as Nodes, <a class="el" href="a00742.html" title="Encapsulates the current applied OpenGL modes, attributes and vertex arrays settings, implements lazy state updating and provides accessors for querying the current state.">State</a> and Drawables, and maths and general helper classes. </p>
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Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a01183.html#a256e54f86de2d3ca6708910ea4fc3368">OSG_GLEXTENSIONS</a>   1</td></tr>
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Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT float </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#a9d621a8eb47d3a73c3065e57085b9bda">osg::getGLVersionNumber</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return floating-point OpenGL version number. <a href="#a9d621a8eb47d3a73c3065e57085b9bda"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#adced0f0fe5de4f6a14c09718b14e4410">osg::isExtensionInExtensionString</a> (const char *extension, const char *extensionString)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if "extension" is contained in "extensionString". <a href="#adced0f0fe5de4f6a14c09718b14e4410"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#acb0553b452bebe9aec6ac42e94bb8ee5">osg::isGLExtensionSupported</a> (unsigned int contextID, const char *extension)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if OpenGL "extension" is supported. <a href="#acb0553b452bebe9aec6ac42e94bb8ee5"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#a93b9ddc257ded7aaa3ffcc05cdfd9ea2">osg::isGLExtensionOrVersionSupported</a> (unsigned int contextID, const char *extension, float requiredGlVersion)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if OpenGL "extension" or minimum OpenGL version number is supported. <a href="#a93b9ddc257ded7aaa3ffcc05cdfd9ea2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT void * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#abab654d4cf91783ad4ae18496e626f5b">osg::getGLExtensionFuncPtr</a> (const char *funcName)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the address of the specified OpenGL function. <a href="#abab654d4cf91783ad4ae18496e626f5b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT void </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#a1229ac44606cf7cd0cf7be0a1a490149">osg::setGLExtensionDisableString</a> (const std::string &disableString)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set a list of extensions to disable for different OpenGL renderers. <a href="#a1229ac44606cf7cd0cf7be0a1a490149"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT std::string & </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#ae59c6b9c624af154a4e9ade6feee04ab">osg::getGLExtensionDisableString</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the list of extensions that are disabled for various OpenGL renderers. <a href="#ae59c6b9c624af154a4e9ade6feee04ab"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#ad1cd1008835f0a01edfe1e27762e4811">osg::getGLExtensionFuncPtr</a> (const char *funcName, const char *fallbackFuncName)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the address of the specified OpenGL function. <a href="#ad1cd1008835f0a01edfe1e27762e4811"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#aaf00ff1fb19ebde07364ba42e26fd89f">osg::getGLExtensionFuncPtr</a> (const char *funcName1, const char *funcName2, const char *funcName3)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the address of the specified OpenGL function. <a href="#aaf00ff1fb19ebde07364ba42e26fd89f"></a><br/></td></tr>
<tr><td class="memTemplParams" colspan="2">template<typename T , typename R > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">T </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a01628.html#a3ad7a539dd335736d99eeb3c41e14024">osg::convertPointerType</a> (R src)</td></tr>
<tr><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a01628.html#aacd1b3b237775440e064d56c24fd9922">osg::setGLExtensionFuncPtr</a> (T &t, const char *str1)</td></tr>
<tr><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a01628.html#a7dca8da9050f07a1f740c19bfffeef29">osg::setGLExtensionFuncPtr</a> (T &t, const char *str1, const char *str2)</td></tr>
<tr><td class="memTemplParams" colspan="2">template<typename T > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">bool </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="a01628.html#a1f00931e732ab73a3e33bff12796c1f5">osg::setGLExtensionFuncPtr</a> (T &t, const char *str1, const char *str2, const char *str3)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSG_EXPORT bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a01628.html#a97a9260fa508b1843635076fc8c40dea">osg::isGLUExtensionSupported</a> (unsigned int contextID, const char *extension)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return true if OpenGL "extension" is supported. <a href="#a97a9260fa508b1843635076fc8c40dea"></a><br/></td></tr>
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<hr/><h2>Define Documentation</h2>
<a class="anchor" id="a256e54f86de2d3ca6708910ea4fc3368"></a><!-- doxytag: member="GLExtensions::OSG_GLEXTENSIONS" ref="a256e54f86de2d3ca6708910ea4fc3368" args="" -->
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<td class="memname">#define OSG_GLEXTENSIONS   1</td>
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