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Update GLES2 status and instructions

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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1684 7f0cb862-5218-0410-a997-914c9d46530a
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beuc 2014-05-31 10:38:44 +00:00
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commit c4d5ab086d
1 changed files with 16 additions and 3 deletions
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19
freeglut/web-src/docs/gles.php
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@ -22,10 +22,15 @@ generateHeader($_SERVER['PHP_SELF']);
<li>Android (see <a href="android.php">dedicated page</a>)</li>
<li>BlackBerry 10/BlackBerry PlayBook</li>
<li>Unix X11 with Mesa EGL</li>
<li>TODO: Raspberry PI: Mesa EGL doesn't work due to X11's fbdev limitation (no GL);
it needs to use <a href="https://github.com/raspberrypi/userland/tree/master/host_applications/linux/libs/bcm_host">bcm_host</a>
from <tt>libraspeberrypi-dev</tt> which will shortcut X11 - see <a href="http://sourceforge.net/p/freeglut/feature-requests/71/">[#71]</a></li>
</ul>
<p>FreeGLUT ES is provided as a separate library, because OpenGL ES has a distinct,
incompatible library for each version (e.g. -lGLESv1_CM and -lGLESv2).</p>
incompatible library for each version (e.g. -lGLESv1_CM and -lGLESv2).<br />
TODO: it seems it's possible to link both without incompatibility, so we need to remove
double-compilation.</p>
<p>When compiled for OpenGL ES 2.0, it is possible to use OpenGL ES 3.0 and higher if the device or
driver supports it by calling <code>glutInitContextVersion(3.0, 0.0)</code> before creating a window.</p>
@ -37,6 +42,8 @@ driver supports it by calling <code>glutInitContextVersion(3.0, 0.0)</code> befo
<p>Here's how to compile FreeGLUT for GLES2:</p>
<p>First, check <tt>README.cmake</tt> to install the dependencies for your system.</p>
<pre>
aptitude install libgles2-mesa-dev
cd /usr/src/freeglut-3.0.0/
@ -91,7 +98,13 @@ mkdir native-gles2/ && cd native-gles2/
PKG_CONFIG_PATH=/tmp/freeglut-native-gles2/share/pkgconfig/ cmake ..
</pre>
<p>See for instance <code>progs/test-shapes-gles1/</code> in the source distribution:
it is a standalone CMake app that uses FreeGLUT GLES1.</p>
<p>See for instance:</p>
<ul>
<li>OpenGL Wikibook's
<a href="https://gitorious.org/wikibooks-opengl/modern-tutorials/source/HEAD:tut04_transform-gles2"><tt>tut04_transform-gles2</tt>
example</a>: it uses a basic Makefile targetting <tt>freeglut-gles2</tt></li>
<li><tt>progs/test-shapes-gles1/</tt> in the source distribution:
it is a standalone CMake app that uses FreeGLUT GLES1.</li>
</ul>
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