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<section id="installation-on-raspberry-pi-3-model-b">
<h1>Installation on Raspberry Pi 3 Model B<a class="headerlink" href="#installation-on-raspberry-pi-3-model-b" title="Link to this heading">#</a></h1>
<section id="distribution">
<h2>Distribution<a class="headerlink" href="#distribution" title="Link to this heading">#</a></h2>
<p>For this installation a recent <a class="reference external" href="https://www.raspberrypi.org/downloads/raspbian/">Rasbian Stretch with Desktop</a> is used. Download the
image and write it onto a fast micro SDHC (class 10) with enough capacity
(at least 16GB).</p>
<p>You might use other distributions for raspberry, but there have been only tests
with Raspbian so far.</p>
</section>
<section id="raspbian-raspberry-setup">
<h2>Raspbian/Raspberry setup<a class="headerlink" href="#raspbian-raspberry-setup" title="Link to this heading">#</a></h2>
<ol class="arabic">
<li><p>Perform first time startup (language etc.)</p></li>
<li><p>start <cite>raspi_config</cite> at console and make sure to select the KMS driver
(Full or Fake). Best experiences were obtained with Full KMS driver:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="mi">7</span> <span class="n">Advanced</span> <span class="n">Options</span>
<span class="n">A1</span> <span class="n">Expand</span> <span class="n">Filesystem</span> <span class="o">-</span> <span class="n">resize</span> <span class="n">root</span> <span class="n">partition</span> <span class="n">to</span> <span class="n">use</span> <span class="nb">all</span> <span class="n">SD</span> <span class="n">space</span>
<span class="n">A7</span> <span class="n">GL</span> <span class="n">Driver</span>
<span class="n">G1</span> <span class="p">(</span><span class="n">Full</span> <span class="n">KMS</span><span class="p">)</span> <span class="n">OpenGL</span> <span class="n">desktop</span> <span class="n">driver</span> <span class="k">with</span> <span class="n">full</span> <span class="n">KMS</span>
</pre></div>
</div>
</li>
<li><p>Reboot</p></li>
</ol>
</section>
<section id="checking-opengl-capabilities">
<h2>Checking OpenGL capabilities<a class="headerlink" href="#checking-opengl-capabilities" title="Link to this heading">#</a></h2>
<p>Now start <cite>glxgears</cite> on a console and check the framerate. You should get
something around 60 FPS.</p>
<p>To retrieve more information about the OpenGL status of the system start
<cite>glxinfo</cite> and <cite>glxheads</cite> on a console and observe the output.</p>
<p>Depending in the MESA version (this is something not reliably explored)
there will be the error message:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">libGL</span> <span class="n">error</span> <span class="n">MESA</span><span class="o">-</span><span class="n">LOADER</span> <span class="n">failed</span> <span class="n">to</span> <span class="n">retrieve</span> <span class="n">device</span> <span class="n">information</span>
</pre></div>
</div>
<p>You can ignore this for now, but if you have any information on the source of
this error and how to resolve, please let vispy-devs know.</p>
</section>
<section id="backend-requirements">
<h2>Backend requirements<a class="headerlink" href="#backend-requirements" title="Link to this heading">#</a></h2>
<p>VisPy requires at least one toolkit for opening a window and creates an OpenGL
context. This can be done using one Qt, GLFW, SDL2, Wx, or Pyglet.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>For Raspbian/Raspberry we rely on Qt4 for now!</p>
</div>
</section>
<section id="package-requirements">
<h2>Package requirements<a class="headerlink" href="#package-requirements" title="Link to this heading">#</a></h2>
<p>The only mandatory requirement for VisPy is the <a class="reference external" href="http://numpy.org">numpy</a>
package. This is already distributed with Raspbian. Nevertheless you need to
install some system packages to get VisPy compiled, installed and running:</p>
<ul class="simple">
<li><p><cite>python3-pyqt4</cite> - Python3 bindings for Qt4</p></li>
<li><p><cite>python3-pyqt4-opengl</cite> - Python3 bindings for Qt’s OpenGL module</p></li>
<li><p><cite>cython3</cite> - C-Extensions for Python3</p></li>
</ul>
<p>Please use the Raspbian package manager to retrieve these packages.</p>
</section>
<section id="installation-options">
<h2>Installation options<a class="headerlink" href="#installation-options" title="Link to this heading">#</a></h2>
<p>You have several options to install VisPy. Make sure to use the system <code class="docutils literal notranslate"><span class="pre">python3</span></code>
at all times. We recommend to use the latest development version.</p>
<p><strong>To install the latest release version</strong>, you can do:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>pip3<span class="w"> </span>install<span class="w"> </span>--upgrade<span class="w"> </span>vispy
</pre></div>
</div>
<p><strong>If you want to run the latest development version</strong>, you can clone the
repository to your local machine and install with <code class="docutils literal notranslate"><span class="pre">develop</span></code> to enable easy
updates to latest <code class="docutils literal notranslate"><span class="pre">main</span></code>:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>git<span class="w"> </span>clone<span class="w"> </span>git://github.com/vispy/vispy.git<span class="w"> </span><span class="c1"># creates "vispy" folder</span>
<span class="gp">$ </span><span class="nb">cd</span><span class="w"> </span>vispy
<span class="gp">$ </span>python3<span class="w"> </span>setup.py<span class="w"> </span>develop
</pre></div>
</div>
<p>To run the latest development version without cloning the repository, you
can also use this line:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>pip3<span class="w"> </span>install<span class="w"> </span>git+https://github.com/vispy/vispy.git
</pre></div>
</div>
</section>
<section id="testing-installation">
<h2>Testing installation<a class="headerlink" href="#testing-installation" title="Link to this heading">#</a></h2>
<p>It is strongly advised to run the vispy test suite right after installation to
check if everything is ok. To do this, just type:</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">vispy</span>
<span class="gp">>>> </span><span class="n">vispy</span><span class="o">.</span><span class="n">test</span><span class="p">()</span>
<span class="gp">...</span>
</pre></div>
</div>
<p>Please note that the test suite may be unstable on some systems. Any potential
instability in the test suite does not necessarily imply instability in the
working state of the provided VisPy examples.</p>
<p>If you have feedback or questions, please use the VisPy <a class="reference internal" href="community.html"><span class="doc">Community</span></a> channels.</p>
</section>
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