First triangle rendered by Gallium3D Cell/PS3 driver

chema · Post by **chema** » Tue Dec 11, 2007 6:41 pm

Brian and the guys of tungsten graphics have release the first screenshot of Gallium3D for Cell. There is a lot of work to do.

Brian:

The Gallium/Cell driver is drawing its first triangle.

This is by no means "real" code but it exercises sending a drawing
command to the SPUs, get/putting framebuffer tiles and displaying the
results.

In the attachment, the background and triangle colors are tweaked a bit
per-SPU so you can see which SPU drew which tile.

-Brian

Screenshot:

IronPeter · Post by **IronPeter** » Tue Dec 11, 2007 8:42 pm

Is the code public?

chema · Post by **chema** » Tue Dec 11, 2007 9:10 pm

Yes, in the git mesa repository, branch gallium-0.1

URL:

http://gitweb.freedesktop.org/?p=mesa/m ... a12ea24e65

IronPeter · Post by **IronPeter** » Tue Dec 11, 2007 10:01 pm

Not very good spe codestyle.

This two-days exercise

http://spu-cell-rasterizer.googlecode.com/svn/trunk/

has the same functionality and better perfomance.

ethernode · Post by **ethernode** » Sun Dec 16, 2007 3:26 am

Heh IronPeter, why don't you go work at Tungsten Graphics ? Looks like they could use some help...

;)

Anyway keep up your awesome work !

IronPeter · Post by **IronPeter** » Sun Dec 16, 2007 6:04 pm

Hhm, my email is public. There are no mails with hiring offers :).

My point is very simple. It is easy to prototype spu based rasterizer. Two-days work, no more.

It is hard to write good spu code in large software project. Refactoring is myth on spu. Bad design means re-engineering.

Good luck for Tungsten guys.

chema · Post by **chema** » Thu Dec 20, 2007 8:25 pm

With the RSX disabled by now, only Gallium3d for Cell still alive :(

Compound · Post by **Compound** » Wed Jan 16, 2008 5:43 am

IronPeter wrote:Not very good spe codestyle.

This two-days exercise

http://spu-cell-rasterizer.googlecode.com/svn/trunk/

has the same functionality and better perfomance.

does this need to be run from within a X desktop? im trying to run it from the shell and it just exits without doing anything

root@localhost:/mnt/share# cd triangle
root@localhost:/mnt/share/triangle# make
embedspu spu_handle spu-server spu_handle.o
g++ -O3 -Wall -lspe -lSDL -g host.cpp spu_handle.o -o development
root@localhost:/mnt/share/triangle# ./development
root@localhost:/mnt/share/triangle#

Compound · Post by **Compound** » Wed Jan 16, 2008 10:16 am

seems it is a resolution issue, im running on a standard def telly at the moment, and the only way this would run is setting

#define WIDTH 400
#define HEIGHT 300

but it just renders a corrupt display

Compound · Post by **Compound** » Thu Jan 17, 2008 11:43 am

hmm, it only seems to render correctly inside of an xserver

jimparis · Post by **jimparis** » Thu Jan 17, 2008 12:41 pm

It's an SDL app, so it will work on X or directfb or whatever you have SDL compiled to support.

Compound · Post by **Compound** » Thu Jan 17, 2008 9:29 pm

i just compiled SDL in the standard way, didnt realise there was any options for alternate configurations. im having the same problem with the ppc version of mesa3d as well, it says to run it without X compile it as linux-solo but i dont thik this is a ppc version, and it certainly doesnt want to build

whats this directfb, had a quick look at the site and couldnt work out what im supposed to do with it

jimparis · Post by **jimparis** » Fri Jan 18, 2008 1:30 am

Check SDL docs.
You may have had trouble outside X because of non-standard resolutions
http://www.libsdl.org/cgi/docwiki.cgi/F ... r_20device
You might have to pick your video driver manually
http://www.libsdl.org/faq.php?action=li ... category=9
etc