docs/cell.html - fp2-dev/platform/external/mesa3d - Gitiles

 <HTML>

 <TITLE>Cell Driver</TITLE>

 <link rel="stylesheet" type="text/css" href="mesa.css"></head>

 <BODY>

 <H1>Mesa Cell Driver</H1>

 <p>
 The Mesa
 <a href="http://en.wikipedia.org/wiki/Cell_%28microprocessor%29" target="_parent">Cell</a>
 driver is part of the
 <a href="http://www.tungstengraphics.com/wiki/index.php/Gallium3D" target="_parent">Gallium3D</a>
 architecture.
 </p>

 <p>
 <a href="http://www.tungstengraphics.com/" target="_parent">Tungsten Graphics</a>
 is leading the project.
 Two phases are planned.
 First, to implement the framework for parallel rasterization using the Cell
 SPEs, including texture mapping.
 Second, to implement a full-featured OpenGL driver with support for GLSL, etc.
 </p>


 <H2>Source Code</H2>

 <p>
 The Cell driver source code is on the <code>gallium-0.1</code> branch of the
 git repository.
 After you've cloned the repository, check out the branch with:
 </p>
 <pre>
    git-checkout -b gallium-0.1 origin/gallium-0.1
 </pre>
 <p>
 To build the driver you'll need the IBM Cell SDK (version 2.1 or 3.0).
 To use the driver you'll need a Cell system, such as a PS3 running Linux,
 or the Cell Simulator (untested, though).
 </p>

 <p>
 If using Cell SDK 3.0, first edit configs/linux-cell and add
 <code>-DSPU_MAIN_PARAM_LONG_LONG</code> to the SPU_CFLAGS.
 </p>

 <p>
 To compile the code, run <code>make linux-cell</code>.
 </p>

 <p>
 To use the library, make sure <code>LD_LIBRARY_PATH</code> points the Mesa/lib/
 directory that contains <code>libGL.so</code>.
 </p>

 <p>
 Verify that the Cell driver is being used by running <code>glxinfo</code>
 and looking for:
 <pre>
   OpenGL renderer string: Gallium 0.1, Cell on Xlib
 </pre>


 <H2>Driver Implementation Summary</H2>

 <p>
 Rasterization is parallelized across the SPUs in a tiled-based manner.
 Batches of transformed triangles are sent to the SPUs (actually, pulled by from
 main memory by the SPUs).
 Each SPU loops over a set of 32x32-pixel screen tiles, rendering the triangles
 into each tile.
 Because of the limited SPU memory, framebuffer tiles are paged in/out of
 SPU local store as needed.
 Similarly, textures are tiled and brought into local store as needed.
 </p>

 <p>
 More recently, vertex transformation has been parallelized across the SPUs
 as well.
 </p>


 <H2>Status</H2>

 <p>
 As of February 2008 the driver supports smooth/flat shaded triangle rendering
 with Z testing and simple texture mapping.
 Simple demos like gears run successfully.
 To test texture mapping, try progs/demos/texcyl (press right mouse button for
 rendering options).
 </p>


 <H2>Contributing</H2>

 <p>
 If you're interested in contributing to the effort, familiarize yourself
 with the code, join the <a href="lists.html">mesa3d-dev mailing list</a>,
 and describe what you'd like to do.
 </p>


 </BODY>
 </HTML>
	<HTML>

	<TITLE>Cell Driver</TITLE>

	<link rel="stylesheet" type="text/css" href="mesa.css"></head>

	<BODY>

	<H1>Mesa Cell Driver</H1>

	<p>
	The Mesa
	<a href="http://en.wikipedia.org/wiki/Cell_%28microprocessor%29" target="_parent">Cell</a>
	driver is part of the
	<a href="http://www.tungstengraphics.com/wiki/index.php/Gallium3D" target="_parent">Gallium3D</a>
	architecture.
	</p>

	<p>
	<a href="http://www.tungstengraphics.com/" target="_parent">Tungsten Graphics</a>
	is leading the project.
	Two phases are planned.
	First, to implement the framework for parallel rasterization using the Cell
	SPEs, including texture mapping.
	Second, to implement a full-featured OpenGL driver with support for GLSL, etc.
	</p>


	<H2>Source Code</H2>

	<p>
	The Cell driver source code is on the <code>gallium-0.1</code> branch of the
	git repository.
	After you've cloned the repository, check out the branch with:
	</p>
	<pre>
	git-checkout -b gallium-0.1 origin/gallium-0.1
	</pre>
	<p>
	To build the driver you'll need the IBM Cell SDK (version 2.1 or 3.0).
	To use the driver you'll need a Cell system, such as a PS3 running Linux,
	or the Cell Simulator (untested, though).
	</p>

	<p>
	If using Cell SDK 3.0, first edit configs/linux-cell and add
	<code>-DSPU_MAIN_PARAM_LONG_LONG</code> to the SPU_CFLAGS.
	</p>

	<p>
	To compile the code, run <code>make linux-cell</code>.
	</p>

	<p>
	To use the library, make sure <code>LD_LIBRARY_PATH</code> points the Mesa/lib/
	directory that contains <code>libGL.so</code>.
	</p>

	<p>
	Verify that the Cell driver is being used by running <code>glxinfo</code>
	and looking for:
	<pre>
	OpenGL renderer string: Gallium 0.1, Cell on Xlib
	</pre>


	<H2>Driver Implementation Summary</H2>

	<p>
	Rasterization is parallelized across the SPUs in a tiled-based manner.
	Batches of transformed triangles are sent to the SPUs (actually, pulled by from
	main memory by the SPUs).
	Each SPU loops over a set of 32x32-pixel screen tiles, rendering the triangles
	into each tile.
	Because of the limited SPU memory, framebuffer tiles are paged in/out of
	SPU local store as needed.
	Similarly, textures are tiled and brought into local store as needed.
	</p>

	<p>
	More recently, vertex transformation has been parallelized across the SPUs
	as well.
	</p>


	<H2>Status</H2>

	<p>
	As of February 2008 the driver supports smooth/flat shaded triangle rendering
	with Z testing and simple texture mapping.
	Simple demos like gears run successfully.
	To test texture mapping, try progs/demos/texcyl (press right mouse button for
	rendering options).
	</p>


	<H2>Contributing</H2>

	<p>
	If you're interested in contributing to the effort, familiarize yourself
	with the code, join the <a href="lists.html">mesa3d-dev mailing list</a>,
	and describe what you'd like to do.
	</p>


	</BODY>
	</HTML>