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<!DOCTYPE html>
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<meta name="description" content=
"OpenSWR : A High Performance, Highly Scalable software OpenGL implementation">
<link rel="stylesheet" type="text/css" media="screen" href=
"stylesheets/stylesheet.css">
<title>OpenSWR</title>
</head>
<body>
<!-- HEADER -->
<div id="header_wrap" class="outer">
<header class="inner">
<a id="mesa_banner" href=
"https://cgit.freedesktop.org/mesa/mesa/tree/src/gallium/drivers/swr?h=amber">
View source in Mesa</a> <a href="index.html">
<h1 id="project_title">OpenSWR</h1></a> <a href=
"index.html">
<h2 id="project_tagline">A High Performance, Highly
Scalable Software Rasterizer for OpenGL</h2></a> <!--
<section id="contact">
For more information please <a href="mailto:openswr@googlegroups.com">send us an email</a>.
</section>
-->
<nav>
<ul class="navbar">
<li class="navbar active">
<a href="index.html">Overview</a>
</li>
<li class="navbar">
<a href="#build">Build</a>
</li>
<li class="navbar">
<a href="gallery.html">Gallery</a>
</li>
<li class="navbar">
<a href="perf.html">Performance</a>
</li>
<li class="navbar" style="float:right">
<a href="contact.html">Contact</a>
</li>
</ul>
</nav>
</header>
</div><!-- MAIN CONTENT -->
<div id="main_content_wrap" class="outer">
<section id="main_content" class="inner">
<h2><a id="intro" class="anchor" href="#wintro"
aria-hidden="true"></a> Overview</h2>
<p>OpenSWR provides a high performance, highly
scalable, OpenGL-compatible software rasterizer.
OpenSWR:</p>
<ul>
<li>is completely CPU-based</li>
<li>runs on platforms from laptops to workstations
to compute nodes in high performance computing
environments.</li>
<li>visualizes datasets when GPU hardware is not
available or is limiting.</li>
<li>uses unmodified visualization application
software with OpenSWR as a drop-in runtime layer
replacement.</li>
</ul>
<p style="text-align:center"><a href=
"gallery.html"><img src="jpg/SpaceWeather_SWR.png"
width="30%"></a> <a href="gallery.html"><img src=
"jpg/Wendell_SWR.png" width="30%"></a> <a href=
"gallery.html"><img src="jpg/tornado_SWR.png" width=
"30%"></a></p>
<p style="text-align:center;font-size:10pt">Click
images for more information</p>
<p>OpenSWR internally builds on top of LLVM, and fully
utilizes modern instruction sets like Intel<sup>®</sup>
Advanced Vector Extensions (AVX, AVX2, and AVX512) to
achieve high rendering performance. The charts below
illustrate the compelling advantage of OpenSWR over
Mesa llvmpipe in a real application scenario.</p>
<p style="text-align:center"><a href=
"perf.html"><img src="jpg/OpenSWR_perf_vs_llvmpipe.png"
width="40%"></a></p>
<p style="text-align:center;font-size:10pt">Click for
more information</p>
<p>OpenSWR is now fully integrated into the Mesa
"Amber" or "Classic" designation branch. OpenSWR
provides a SWR renderer that supports much of the
OpenGL 3.3 Core and OpenGL 3.0 Compatibility contexts.
Standard Mesa environment variables provide the ability
to run-time switch between OpenSWR and llvmpipe
software renderers.</p><strong>For more detail, please
see the <a href=
"talks/SC15DevConf-OpenSWR.pdf">"OpenSWR Overview"</a>
presented at the Intel<sup>®</sup> HPC Developers
Conference at SC15.</strong>
<h2><a name="build" id="build" class="anchor" href=
"#wintro" aria-hidden="true"></a> Building Mesa with
OpenSWR</h2>
<p>OpenSWR is built as a gallium driver within
Mesa.</p>
<p>Build and run instructions are available for
<a href="build-linux.html">Linux</a> or <a href=
"build-windows.html">Windows</a>.</p>
<h2><a id="news" class="anchor" href="#news"
aria-hidden="true"></a> Updates</h2>
<dl>
<dt>March 28, 2022</dt>
<dd>
<p><a href="http://mesa3d.org/">Mesa 21.3.x</a>
is the latest branch where OpenSWR resides.
This branch is refered to as "Amber" or
"Classic". OpenSWR has been removed from the
Mesa 22.x branch. News pieces from
phoronix.com:</p>
<ul>
<li>December 7, 2021: <a href=
"https://www.phoronix.com/scan.php?page=news_item&px=Mesa-22.0-Drops-OpenSWR">
"Intel's SWR Removed From Mainline
Mesa..."</a>
</li>
<li>December 3, 2021: <a href=
"https://www.phoronix.com/scan.php?page=news_item&px=Mesa-Classic-Retired">
"Mesa Classic Retired..."</a>
</li>
</ul>
<p>Visit the <a href="index.html#build">Build
and Run Mesa with OpenSWR</a> section of this
document for updated deployment guidance.</p>
<p>See the Mesa <a href=
"https://cgit.freedesktop.org/mesa/mesa/">repository
browser</a> for latest branch, staging, and tag
information.</p>
</dd>
<dt>February 19, 2020</dt>
<dd>
<a href="http://mesa3d.org/">Mesa 20.0.0</a>
has been released with an important feature
change: support for <a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_tessellation_shader.txt">
tessellation shaders</a> in OpenSWR!
</dd>
<dt>December 12, 2019</dt>
<dd>
<a href="http://mesa3d.org/">Mesa 19.3.0</a>
has been released with various fixes and couple
of new features that are part of <a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_gpu_shader5.txt">
ARB_gpu_shader5</a>:
<ul>
<li>enhanced textureGather</li>
<li>geometry shader instancing</li>
<li>geometry shader multiple streams</li>
</ul>
</dd>
<dt>September 25, 2019</dt>
<dd>
With <a href="http://mesa3d.org/">Mesa
19.2.0</a> OpenSWR development has been
revamped. Apart from many updates in the
rasterizer core, support for the following
OpenGL extensions has been added:
<ul>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_buffer_range.txt">
ARB_texture_buffer_range</a>
</li>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_vertex_attrib_64bit.txt">
ARB_vertex_attrib_64bit</a>
</li>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_cube_map_array.txt">
ARB_texture_cube_map_array</a>
</li>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_query_lod.txt">
ARB_texture_query_lod</a>
</li>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_gpu_shader_fp64.txt">
ARB_gpu_shader_fp64</a>
</li>
<li>
<a href=
"https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_viewport_array.txt">
ARB_viewport_array</a>
</li>
</ul>
</dd>
<dt>March 27, 2018</dt>
<dd>
<a href="http://mesa3d.org/">Mesa 18.0.0</a>
has been released with support for SKX and KNL
architectures in OpenSWR.
</dd>
<dt>January 30, 2017</dt>
<dd>Added Windows build instructions, and moved
instructions for both Linux and Windows to their
own page.</dd>
<dt>July 8, 2016</dt>
<dd>
<a href="http://mesa3d.org/">Mesa 12.0</a> has
been released and contains OpenSWR as an
optional driver. Development work on OpenSWR is
now done on the mesa git master repository.
</dd>
<dt>Oct 19, 2015</dt>
<dd>
Our initial public version of our Mesa+SWR
integration work is now available from <a href=
"https://github.com/OpenSWR/openswr-mesa">https://github.com/OpenSWR/openswr-mesa</a>.
</dd>
<dt>Aug 9, 2015</dt>
<dd>
<p>Since the release of early alpha, we have
been busy integrating our OpenSWR core into the
Mesa project. This enables us to take advantage
of a very mature, very feature complete driver
stack that would have been very difficult to
develop on our own.</p>
<p>The result is that OpenSWR now has far
greater functionality than the OpenGL 1.4
features available in the first alpha
release.</p>
</dd>
<dt>Dec 12, 2014</dt>
<dd>
<p>ALPHA release. This version is the first to
be released to the public. Please bear with us
if there are build or functionality issues. The
major applications used for testing were
ParaView and VisIt - if you are trying another
program you may encounter missing features.</p>
<p>This version is coming out as we are working
on some major cleanups to the code. In order to
keep our commitment to release this to the
community and to provide a well-tested version,
we are releasing the code that was used for the
SC14 demonstrations. The next major release
will contain the cleanups.</p>
<p>The source code can be downloaded here:</p>
<ul>
<li>
<a href=
"https://github.com/OpenSWR/openswr/archive/v0.1.tar.gz">
v0.1.tar.gz</a>
</li>
<li>
<a href=
"https://github.com/OpenSWR/openswr/archive/v0.1.tar.gz">
v0.1.zip</a>
</li>
</ul>
</dd>
<dt>Dec 8, 2014</dt>
<dd>
The slides for our OpenSWR-related talks at
SC14 are now available:
<ul>
<li>
<a href=
"talks/SC14DevConf-SWR.pdf">"Software
Rasterizer (SWR)"</a> (presented at the
Intel HPC Developers Conference at
SC14)
</li>
<li>
<a href=
"http://www.ospray.org/download/talks/UltraVis14-HiFiVis-compressed.pdf">
"High-Fidelity Visualization"</a>
(presented at UltraVis 2014)
</li>
</ul>
</dd>
<dt>Nov 13, 2014</dt>
<dd>
There is an upcoming talk on OpenSWR at
Supercomputing 2014:
<ul>
<li>At the "Visualization" track of the
<a href=
"http://ihpcc2014.com/dw-visual.html">Intel<sup>®</sup>
HPC Developer Conference (Nov 16, 2014)</a>
</li>
</ul>We will be posting the slides of this talk
as soon as the event is over.
</dd>
</dl><!-- FOOTER -->
<div id="footer_wrap" class="outer">
<footer class="inner">
<p class="copyright">OpenSWR maintained by
<a href=
"https://github.com/OpenSWR">OpenSWR</a><br>
For information about compiler optimizations,
see our <a href=
"https://software.intel.com/en-us/articles/optimization-notice#opt-en">
Optimization Notice</a>.<br>
©2009-2020 Intel Corporation<br>
<a href=
"https://www.intel.com/privacy">Privacy</a></p>
</footer>
</div>
</section>
</div>
</body>
</html>