Ajout version Release/x64 avec les libraries x64 et tuning de la version Debug

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<h2>Automatic Code Generation</h2>
<p>
Starting from release 1.1.0, the source code and parts of the
documentation are automatically generated from the extension
specifications in a two-step process. In the first step,
specification files from the OpenGL registry are downloaded and
parsed. Skeleton descriptors are created for each extension. These
descriptors contain all necessary information for creating the source
code and documentation in a simple and compact format, including the
name of the extension, url link to the specification, tokens, function
declarations, typedefs and struct definitions. In the second step,
the header files as well as the library and glewinfo source are
generated from the descriptor files. The code generation scripts are
located in the <tt>auto</tt> subdirectory.
</p>
<p>
The code generation scripts require GNU make, wget, and perl. On
Windows, the simplest way to get access to these tools is to install
<a href="http://www.cygwin.com/">Cygwin</a>, but make sure that the
root directory is mounted in binary mode. The makefile in the
<tt>auto</tt> directory provides the following build targets:
</p>
<table border=0 cellpadding=0 cellspacing=5>
<tr><td align="left" valign="top"><tt>make</tt></td>
<td align=left>Create the source files from the descriptors.<br/> If the
descriptors do not exist, create them from the spec files.<br/> If the spec
files do not exist, download them from the OpenGL repository.</td></tr>
<tr><td align="left" valign="top"><tt>make&nbsp;clean</tt></td>
<td align=left>Delete the source files.</td></tr>
<tr><td align="left" valign="top"><tt>make&nbsp;clobber</tt></td>
<td align=left>Delete the source files and the descriptors.</td></tr>
<tr><td align="left" valign="top"><tt>make&nbsp;destroy</tt></td>
<td align=left>Delete the source files, the descriptors, and the spec files.</td></tr>
<tr><td align="left" valign="top"><tt>make&nbsp;custom</tt></td>
<td align=left>Create the source files for the extensions
listed in <tt>auto/custom.txt</tt>.<br/> See "Custom Code
Generation" below for more details.</td></tr>
</table>
<h3>Adding a New Extension</h3>
<p>
To add a new extension, create a descriptor file for the extension in
<tt>auto/core</tt> and rerun the code generation scripts by typing
<tt>make clean; make</tt> in the <tt>auto</tt> directory.
</p>
<p>
The format of the descriptor file is given below. Items in
brackets are optional.
</p>
<p class="pre">
&lt;Extension Name&gt;<br>
[&lt;URL of Specification File&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Token Name&gt; &lt;Token Value&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Token Name&gt; &lt;Token Value&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;...<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Typedef&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Typedef&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;...<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Function Signature&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Function Signature&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;...<br>
<!-- &nbsp;&nbsp;&nbsp;&nbsp;[&lt;Function Definition&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;[&lt;Function Definition&gt;]<br>
&nbsp;&nbsp;&nbsp;&nbsp;...<br> -->
</p>
<!--
<p>
Note that <tt>Function Definitions</tt> are copied to the header files
without changes and have to be terminated with a semicolon. In
contrast, <tt>Tokens</tt>, <tt>Function signatures</tt>, and
<tt>Typedefs</tt> should not be terminated with a semicolon.
</p>
-->
<p>
Take a look at one of the files in <tt>auto/core</tt> for an
example. Note that typedefs and function signatures should not be
terminated with a semicolon.
</p>
<h3>Custom Code Generation</h3>
<p>
Starting from GLEW 1.3.0, it is possible to control which extensions
to include in the libarary by specifying a list in
<tt>auto/custom.txt</tt>. This is useful when you do not need all the
extensions and would like to reduce the size of the source files.
Type <tt>make clean; make custom</tt> in the <tt>auto</tt> directory
to rerun the scripts with the custom list of extensions.
</p>
<p>
For example, the following is the list of extensions needed to get GLEW and the
utilities to compile.
</p>
<p class="pre">
WGL_ARB_extensions_string<br>
WGL_ARB_multisample<br>
WGL_ARB_pixel_format<br>
WGL_ARB_pbuffer<br>
WGL_EXT_extensions_string<br>
WGL_ATI_pixel_format_float<br>
WGL_NV_float_buffer<br>
</p>
<h2>Separate Namespace</h2>
<p>
To avoid name clashes when linking with libraries that include the
same symbols, extension entry points are declared in a separate
namespace (release 1.1.0 and up). This is achieved by aliasing OpenGL
function names to their GLEW equivalents. For instance,
<tt>glFancyFunction</tt> is simply an alias to
<tt>glewFancyFunction</tt>. The separate namespace does not effect
token and function pointer definitions.
</p>
<h2>Known Issues</h2>
<p>
GLEW requires GLX 1.2 for compatibility with GLUT.
</p>

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<h2>Initializing GLEW</h2>
<p>
First you need to create a valid OpenGL rendering context and call
<tt>glewInit()</tt> to initialize the extension entry points. If
<tt>glewInit()</tt> returns <tt>GLEW_OK</tt>, the initialization
succeeded and you can use the available extensions as well as core
OpenGL functionality. For example:
</p>
<p class="pre">
#include &lt;GL/glew.h&gt;<br>
#include &lt;GL/glut.h&gt;<br>
...<br>
glutInit(&amp;argc, argv);<br>
glutCreateWindow("GLEW Test");<br>
GLenum err = glewInit();<br>
if (GLEW_OK != err)<br>
{<br>
&nbsp;&nbsp;/* Problem: glewInit failed, something is seriously wrong. */<br>
&nbsp;&nbsp;fprintf(stderr, "Error: %s\n", glewGetErrorString(err));<br>
&nbsp;&nbsp;...<br>
}<br>
fprintf(stdout, "Status: Using GLEW %s\n", glewGetString(GLEW_VERSION));<br>
</p>
<h2>Checking for Extensions</h2>
<p>
Starting from GLEW 1.1.0, you can find out if a particular extension
is available on your platform by querying globally defined variables
of the form <tt>GLEW_{extension_name}</tt>:
</p>
<p class="pre">
if (GLEW_ARB_vertex_program)<br>
{<br>
&nbsp;&nbsp;/* It is safe to use the ARB_vertex_program extension here. */<br>
&nbsp;&nbsp;glGenProgramsARB(...);<br>
}<br>
</p>
<p>
<b>In GLEW 1.0.x, a global structure was used for this task. To ensure
binary compatibility between releases, the struct was replaced with a
set of variables.</b>
</p>
<p>
You can also check for core OpenGL functionality. For example, to
see if OpenGL 1.3 is supported, do the following:
</p>
<p class="pre">
if (GLEW_VERSION_1_3)<br>
{<br>
&nbsp;&nbsp;/* Yay! OpenGL 1.3 is supported! */<br>
}<br>
</p>
<p>
In general, you can check if <tt>GLEW_{extension_name}</tt> or
<tt>GLEW_VERSION_{version}</tt> is true or false.
</p>
<p>
It is also possible to perform extension checks from string
input. Starting from the 1.3.0 release, use <tt>glewIsSupported</tt>
to check if the required core or extension functionality is
available:
</p>
<p class="pre">
if (glewIsSupported("GL_VERSION_1_4&nbsp;&nbsp;GL_ARB_point_sprite"))<br>
{<br>
&nbsp;&nbsp;/* Great, we have OpenGL 1.4 + point sprites. */<br>
}<br>
</p>
<p>
For extensions only, <tt>glewGetExtension</tt> provides a slower alternative
(GLEW 1.0.x-1.2.x). <b>Note that in the 1.3.0 release </b>
<tt>glewGetExtension</tt> <b>was replaced with </b>
<tt>glewIsSupported</tt>.
</p>
<p class="pre">
if (glewGetExtension("GL_ARB_fragment_program"))<br>
{<br>
&nbsp;&nbsp;/* Looks like ARB_fragment_program is supported. */<br>
}<br>
</p>
<h2>Experimental Drivers</h2>
<p>
GLEW obtains information on the supported extensions from the graphics
driver. Experimental or pre-release drivers, however, might not
report every available extension through the standard mechanism, in
which case GLEW will report it unsupported. To circumvent this
situation, the <tt>glewExperimental</tt> global switch can be turned
on by setting it to <tt>GL_TRUE</tt> before calling
<tt>glewInit()</tt>, which ensures that all extensions with valid
entry points will be exposed.
</p>
<h2>Platform Specific Extensions</h2>
<p>
Platform specific extensions are separated into two header files:
<tt>wglew.h</tt> and <tt>glxew.h</tt>, which define the available
<tt>WGL</tt> and <tt>GLX</tt> extensions. To determine if a certain
extension is supported, query <tt>WGLEW_{extension name}</tt> or
<tt>GLXEW_{extension_name}</tt>. For example:
</p>
<p class="pre">
#include &lt;GL/wglew.h&gt;<br>
<br>
if (WGLEW_ARB_pbuffer)<br>
{<br>
&nbsp;&nbsp;/* OK, we can use pbuffers. */<br>
}<br>
else<br>
{<br>
&nbsp;&nbsp;/* Sorry, pbuffers will not work on this platform. */<br>
}<br>
</p>
<p>
Alternatively, use <tt>wglewIsSupported</tt> or
<tt>glxewIsSupported</tt> to check for extensions from a string:
</p>
<p class="pre">
if (wglewIsSupported("WGL_ARB_pbuffer"))<br>
{<br>
&nbsp;&nbsp;/* OK, we can use pbuffers. */<br>
}<br>
</p>
<h2>Utilities</h2>
<p>
GLEW provides two command-line utilities: one for creating a list of
available extensions and visuals; and another for verifying extension
entry points.
</p>
<h3>visualinfo: extensions and visuals</h3>
<p>
<tt>visualinfo</tt> is an extended version of <tt>glxinfo</tt>. The
Windows version creates a file called <tt>visualinfo.txt</tt>, which
contains a list of available OpenGL, WGL, and GLU extensions as well
as a table of visuals aka. pixel formats. Pbuffer and MRT capable
visuals are also included. For additional usage information, type
<tt>visualinfo -h</tt>.
</p>
<h3>glewinfo: extension verification utility</h3>
<p>
<tt>glewinfo</tt> allows you to verify the entry points for the
extensions supported on your platform. The Windows version
reports the results to a text file called <tt>glewinfo.txt</tt>. The
Unix version prints the results to <tt>stdout</tt>.
</p>
<p>Windows usage:</p>
<blockquote><pre>glewinfo [-pf &lt;id&gt;]</pre></blockquote>
<p>where <tt>&lt;id&gt;</tt> is the pixel format id for which the
capabilities are displayed.</p>
<p>Unix usage:</p>
<blockquote><pre>glewinfo [-display &lt;dpy&gt;] [-visual &lt;id&gt;]</pre></blockquote>
<p>where <tt>&lt;dpy&gt;</tt> is the X11 display and <tt>&lt;id&gt;</tt> is
the visual id for which the capabilities are displayed.</p>

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<h2>Building GLEW</h2>
<h3>Windows</h3>
<p>A MS Visual Studio project is provided in the <tt>build/vc6</tt> directory.</p>
<p>Pre-built shared and static libraries are also available for <a href="index.html">download</a>.</p>
<h3>Makefile</h3>
<p>For platforms other than MS Windows, the provided <tt>Makefile</tt> is used.</p>
<h4>Command-line variables</h4>
<table border=0 cellpadding=0 cellspacing=10>
<tr><td valign=top><tt>SYSTEM</tt></td><td valign=top>auto</td>
<td align=left>Target system to build: darwin, linux, solaris, etc.<br/>For a full list of supported targets: <tt>ls config/Makefile.*</tt><br/>
<a href="http://git.savannah.gnu.org/gitweb/?p=config.git;a=tree">config.guess</a> is used to auto detect, as necessary.</td></tr>
<tr><td valign=top><tt>GLEW_DEST</tt></td><td valign=top><tt>/usr</tt></td>
<td align=left>Base directory for installation.</td></tr>
</table>
<h4>Make targets</h4>
<table border=0 cellpadding=0 cellspacing=10>
<tr><td valign=top><tt>all</tt></td><td>Build everything.</td><tr>
<tr><td valign=top><tt>glew.lib</tt></td><td>Build static and dynamic GLEW libraries.</td><tr>
<tr><td valign=top><tt>glew.lib.mx</tt></td><td>Build static and dynamic GLEWmx libraries.</td><tr>
<tr><td valign=top><tt>glew.bin</tt></td><td>Build <tt>glewinfo</tt> and <tt>visualinfo</tt> utilities.</td><tr>
<tr><td valign=top><tt>clean</tt></td><td>Delete temporary and built files.</td><tr>
<tr><td valign=top><tt>install.all</tt></td><td>Install everything.</td><tr>
<tr><td valign=top><tt>install</tt></td><td>Install GLEW libraries.</td><tr>
<tr><td valign=top><tt>install.mx</tt></td><td>Install GLEWmx libraries.</td><tr>
<tr><td valign=top><tt>install.bin</tt></td><td>Install <tt>glewinfo</tt> and <tt>visualinfo</tt> utilities.</td><tr>
<tr><td valign=top><tt>uninstall</tt></td><td>Delete installed files.</td><tr>
</table>
<h4>Requirements</h4>
<ul>
<li>GNU make</li>
<li>perl</li>
<li>wget</li>
<li>GNU sed</li>
<li>gcc compiler</li>
<li>git</li>
</ul>
Ubuntu: <pre>sudo apt-get install libXmu-dev libXi-dev libgl-dev dos2unix git wget</pre>
Fedora: <pre>sudo yum install libXmu-devel libXi-devel libGL-devel dos2unix git wget</pre>

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<p><a href="https://github.com/nigels-com/glew#copyright-and-licensing">
Author, copyright and licensing information</a> on github.</p>

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<p>
The OpenGL Extension Wrangler Library (GLEW) is a cross-platform
open-source C/C++ extension loading library. GLEW provides efficient
run-time mechanisms for determining which OpenGL extensions are
supported on the target platform. OpenGL core and extension
functionality is exposed in a single header file. GLEW has been
tested on a variety of operating systems, including Windows, Linux,
Mac OS X, FreeBSD, Irix, and Solaris.
</p>
<h2>Downloads</h2>
<p>
<a href="http://sourceforge.net/projects/glew/">GLEW</a> is distributed
as source and precompiled binaries.<br/>
The latest release is
<a href="https://sourceforge.net/projects/glew/files/glew/2.1.0/">2.1.0</a>[07-31-17]:
</p>
<p>
</p>
<p>
<table border="1" cellpadding="5" cellspacing="0" bgcolor="#f0f0f0" align="center">
<tr>
<td>
<table border="0" cellpadding="3" cellspacing="0">
<tr>
<td></td>
<td align="right"><b>Source</b></td>
<td></td>
<td align="left">
<a href="https://sourceforge.net/projects/glew/files/glew/2.1.0/glew-2.1.0.zip/download">ZIP</a>&nbsp;|&nbsp;
<a href="https://sourceforge.net/projects/glew/files/glew/2.1.0/glew-2.1.0.tgz/download">TGZ</a></td>
<td></td>
</tr>
<tr>
<td></td>
<td align="right"><b>Binaries</b></td>
<td></td>
<td align="left">
<a href="https://sourceforge.net/projects/glew/files/glew/2.1.0/glew-2.1.0-win32.zip/download">Windows 32-bit and 64-bit</a>
</td>
<td></td>
</tr>
</table>
</tr>
</table>
<p></p>
<p>
An up-to-date copy is also available using <a href="http://git-scm.com/">git</a>:
</p>
<ul>
<li><a href="https://github.com/nigels-com/glew">github</a><br/>
<tt>git clone https://github.com/nigels-com/glew.git glew</tt><br/>&nbsp;</li>
</ul>
<h2>Supported Extensions</h2>
<p>
The latest release contains support for OpenGL 4.6, compatibility and forward-compatible contexts and the following extensions:
</p>
<ul>
<li><a href="glew.html">OpenGL extensions</a>
<li><a href="wglew.html">WGL extensions</a>
<li><a href="glxew.html">GLX extensions</a>
</ul>
<h2>News</h2>
<ul>
<li>[07-31-17] <a href="https://sourceforge.net/projects/glew/files/glew/2.1.0/">GLEW 2.1.0</a> adds support for OpenGL 4.6, new extensions and minor bug fixes</li>
<li>[07-24-16] <a href="https://sourceforge.net/projects/glew/files/glew/2.0.0/">GLEW 2.0.0</a> adds support for forward-compatible contexts, adds new extensions, OSMesa and EGL support, MX discontinued and minor bug fixes</li>
<li>[08-10-15] <a href="https://sourceforge.net/projects/glew/files/glew/1.13.0/">GLEW 1.13.0</a> adds support for new extensions, fixes minor bugs</li>
<li>[26-01-15] <a href="https://sourceforge.net/projects/glew/files/glew/1.12.0/">GLEW 1.12.0</a> fixes minor bugs and adds new extensions</li>
<li>[08-11-14] <a href="https://sourceforge.net/projects/glew/files/glew/1.11.0/">GLEW 1.11.0</a> adds support for OpenGL 4.5, new extensions</li>
<li>[07-22-13] <a href="https://sourceforge.net/projects/glew/files/glew/1.10.0/">GLEW 1.10.0</a> adds support for OpenGL 4.4, new extensions</li>
<li>[08-06-12] <a href="https://sourceforge.net/projects/glew/files/glew/1.9.0/">GLEW 1.9.0</a> adds support for OpenGL 4.3, new extensions</li>
<li>[07-17-12] <a href="https://sourceforge.net/projects/glew/files/glew/1.8.0/">GLEW 1.8.0</a> fixes minor bugs and adds new extensions</li>
<li>[08-26-11] <a href="https://sourceforge.net/projects/glew/files/glew/1.7.0/">GLEW 1.7.0</a> adds support for OpenGL 4.2, new extensions, fixes bugs</li>
<li>[04-27-11] <a href="https://sourceforge.net/projects/glew/files/glew/1.6.0/">GLEW 1.6.0</a> fixes minor bugs and adds eight new extensions</li>
<li>[01-31-11] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.8/">GLEW 1.5.8</a> fixes minor bugs and adds two new extensions</li>
<li>[11-03-10] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.7/">GLEW 1.5.7</a> fixes minor bugs and adds one new extension</li>
<li>[09-07-10] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.6/">GLEW 1.5.6</a> adds support for OpenGL 4.1, fixes bugs</li>
<li>[07-13-10] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.5/">GLEW 1.5.5</a> fixes minor bugs and adds new extensions</li>
<li>[04-21-10] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.4/">GLEW 1.5.4</a> adds support for OpenGL 3.3, OpenGL 4.0 and new extensions, fixes bugs</li>
<li>[02-28-10] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.3/">GLEW 1.5.3</a> fixes minor bugs and adds three new extensions</li>
<li>[12-31-09] <a href="https://sourceforge.net/projects/glew/files/glew/1.5.2/">GLEW 1.5.2</a> adds support for OpenGL 3.1, OpenGL 3.2 and new extensions</li>
<li>[11-03-08] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=637800">GLEW 1.5.1</a> adds support for OpenGL 3.0 and 31 new extensions</li>
<li>[12-27-07] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=564464">GLEW 1.5.0</a> is released under less restrictive licenses</li>
<li>[04-27-07] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=504079">GLEW 1.4.0</a> is released</li>
<li>[03-08-07] GLEW is included in the <a href="http://developer.nvidia.com/object/sdk_home.html">NVIDIA OpenGL SDK</a></li>
<li>[03-04-07] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=491113">GLEW 1.3.6</a> is released</li>
<li>[02-28-07] <a href="http://glew.svn.sourceforge.net/svnroot/glew/trunk/glew/">Repository</a> is migrated to SVN</li>
<li>[02-25-07] GLEW is included in the <a href="http://www.opengl.org/sdk/">OpenGL SDK</a></li>
<li>[11-21-06] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=465334">GLEW 1.3.5</a> adds OpenGL 2.1 and NVIDIA G80 extensions</li>
<li>[03-04-06] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=398455">GLEW 1.3.4</a> adds support for five new extensions</li>
<li>[05-16-05] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=327647">GLEW 1.3.3</a> is released</li>
<li>[03-16-05] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=313345">GLEW 1.3.2</a> adds support for GL_APPLE_pixel_buffer</li>
<li>[02-11-05] <a href="http://gljava.sourceforge.net/">gljava</a> and <a href="http://sdljava.sourceforge.net/">sdljava</a> provide a Java binding to OpenGL via GLEW</li>
<li>[02-02-05] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=302049">GLEW 1.3.1</a> adds support for <a href="http://www.opengl.org/documentation/extensions/EXT_framebuffer_object.txt">GL_EXT_framebuffer_object</a></li>
<li>[01-04-05] <a href="https://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=294527">GLEW 1.3.0</a> adds core OpenGL 2.0 support plus many enhancements</li>
<li>[12-22-04] <a href="http://glewpy.sf.net/">GLEWpy</a> Python wrapper announced</li>
<li>[12-12-04] <a href="https://sourceforge.net/mail/?group_id=67586">Mailing lists</a> created on sourceforge</li>
<li>[12-06-04] <a href="http://sourceforge.net/project/showfiles.php?group_id=67586&amp;package_id=67942&amp;release_id=287948">GLEW 1.2.5</a> adds new extensions and support for FreeBSD</li>
</ul>
<h2>Links</h2>
<ul>
<li><a href="http://www.opengl.org/sdk/">OpenGL Software Development Kit</a></li>
<li><a href="http://www.opengl.org/registry/">OpenGL Extension Registry</a></li>
<li><a href="https://www.opengl.org/wiki/OpenGL_Extension">OpenGL Wiki: Extensions</a></li>
<li><a href="http://developer.nvidia.com/nvidia-opengl-specs">NVIDIA OpenGL Extension Specifications</a></li>
<li><a href="http://developer.apple.com/library/mac/#documentation/GraphicsImaging/Conceptual/OpenGLExtensionsGuide/Reference/reference.html">Apple OpenGL Extensions Guide</a></li>
</ul>

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<h2>Installation</h2>
<p>
To use the shared library version of GLEW, you need to copy the
headers and libraries into their destination directories. On Windows
this typically boils down to copying:
</p>
<table border="0" cellpadding="0" cellspacing="0" align="center"> <!-- bgcolor="#f0f0f0" -->
<tr><td align="left"><tt>bin/glew32.dll</tt></td><td>&nbsp;&nbsp;&nbsp;&nbsp;to&nbsp;&nbsp;&nbsp;&nbsp;</td>
<td align="left"><tt>%SystemRoot%/system32</tt></td></tr>
<tr><td align="left"><tt>lib/glew32.lib</tt></td><td>&nbsp;&nbsp;&nbsp;&nbsp;to&nbsp;&nbsp;&nbsp;&nbsp;</td>
<td align="left"><tt>{VC Root}/Lib</tt></td></tr>
<tr><td align="left"><tt>include/GL/glew.h</tt></td><td>&nbsp;&nbsp;&nbsp;&nbsp;to&nbsp;&nbsp;&nbsp;&nbsp;</td>
<td align="left"><tt>{VC Root}/Include/GL</tt></td></tr>
<tr><td align="left"><tt>include/GL/wglew.h</tt></td><td>&nbsp;&nbsp;&nbsp;&nbsp;to&nbsp;&nbsp;&nbsp;&nbsp;</td>
<td align="left"><tt>{VC Root}/Include/GL</tt></td></tr>
</table>
<p>
</p>
<p>
where <tt>{VC Root}</tt> is the Visual C++ root directory, typically
<tt>C:/Program Files/Microsoft Visual Studio/VC98</tt> for Visual
Studio 6.0 or <tt>C:/Program Files/Microsoft Visual
Studio .NET 2003/Vc7/PlatformSDK</tt> for Visual Studio .NET.
</p>
<p>
On Unix, typing <tt>make install</tt> will attempt to install GLEW
into <tt>/usr/include/GL</tt> and <tt>/usr/lib</tt>. You can
customize the installation target via the <tt>GLEW_DEST</tt>
environment variable if you do not have write access to these
directories.
</p>
<h2>Building Your Project with GLEW</h2>
<p>
There are two ways to build your project with GLEW.
</p>
<h3>Including the source files / project file</h3>
<p>
The simpler but less flexible way is to include <tt>glew.h</tt> and
<tt>glew.c</tt> into your project. On Windows, you also need to
define the <tt>GLEW_STATIC</tt> preprocessor token when building a
static library or executable, and the <tt>GLEW_BUILD</tt> preprocessor
token when building a dll. You also need to replace
<tt>&lt;GL/gl.h&gt;</tt> and <tt>&lt;GL/glu.h&gt;</tt> with
<tt>&lt;glew.h&gt;</tt> in your code and set the appropriate include
flag (<tt>-I</tt>) to tell the compiler where to look for it. For
example:
</p>
<p class="pre">
#include &lt;glew.h&gt;<br>
#include &lt;GL/glut.h&gt;<br>
&lt;gl, glu, and glut functionality is available here&gt;<br>
</p>
<p>
Depending on where you put <tt>glew.h</tt> you may also need to change
the include directives in <tt>glew.c</tt>. Note that if you are using
GLEW together with GLUT, you have to include <tt>glew.h</tt> first.
In addition, <tt>glew.h</tt> includes <tt>glu.h</tt>, so you do not
need to include it separately.
</p>
<p>
On Windows, you also have the option of adding the supplied project
file <tt>glew_static.dsp</tt> to your workspace (solution) and compile
it together with your other projects. In this case you also need to
change the <tt>GLEW_BUILD</tt> preprocessor constant to
<tt>GLEW_STATIC</tt> when building a static library or executable,
otherwise you get build errors.
</p>
<p>
<b>Note that GLEW does not use the C
runtime library, so it does not matter which version (single-threaded,
multi-threaded or multi-threaded DLL) it is linked with (without
debugging information). It is, however, always a good idea to compile all
your projects including GLEW with the same C runtime settings.</b>
</p>
<h3>Using GLEW as a shared library</h3>
<p>
Alternatively, you can use the provided project files / makefile to
build a separate shared library you can link your projects with later.
In this case the best practice is to install <tt>glew.h</tt>,
<tt>glew32.lib</tt>, and <tt>glew32.dll</tt> / <tt>libGLEW.so</tt> to
where the OpenGL equivalents <tt>gl.h</tt>, <tt>opengl32.lib</tt>, and
<tt>opengl32.dll</tt> / <tt>libGL.so</tt> are located. Note that you
need administrative privileges to do this. If you do not have
administrator access and your system administrator will not do it for
you, you can install GLEW into your own lib and include subdirectories
and tell the compiler where to find it. Then you can just replace
<tt>&lt;GL/gl.h&gt;</tt> with <tt>&lt;GL/glew.h&gt;</tt> in your
program:
</p>
<p class="pre">
#include &lt;GL/glew.h&gt;<br>
#include &lt;GL/glut.h&gt;<br>
&lt;gl, glu, and glut functionality is available here&gt;<br>
</p>
<p>
or:
</p>
<p class="pre">
#include &lt;GL/glew.h&gt;<br>
&lt;gl and glu functionality is available here&gt;<br>
</p>
<p>
Remember to link your project with <tt>glew32.lib</tt>,
<tt>glu32.lib</tt>, and <tt>opengl32.lib</tt> on Windows and
<tt>libGLEW.so</tt>, <tt>libGLU.so</tt>, and <tt>libGL.so</tt> on
Unix (<tt>-lGLEW -lGLU -lGL</tt>).
</p>
<p>
It is important to keep in mind that <tt>glew.h</tt> includes neither
<tt>windows.h</tt> nor <tt>gl.h</tt>. Also, GLEW will warn you by
issuing a preprocessor error in case you have included <tt>gl.h</tt>,
<tt>glext.h</tt>, or <tt>glATI.h</tt> before <tt>glew.h</tt>.
</p>

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