According to the press release:
Previous SGI contributions to the free and open source community
are now available under the new license. These contributions
include the SGI® OpenGL® Sample Implementation, the GLX™ API and
other GLX extensions.
[...]
"SGI has been one of the most ardent commercial supporters of free
and open source software, so it was important to us that we continue
to support the free software development community by releasing our
earlier OpenGL-related contributions under this new license," said
Steve Neuner, director of Linux, SGI. "This license ensures that all
existing user communities will benefit, and their work can proceed
unimpeded. Both Mesa and the X.org Project can continue to utilize
this code in free software distributions of GNU/Linux. Now more than
ever, software previously released by SGI under earlier GLX and SGI
Free Software License B is free."
"The GLX API" is here read to include the original GLX source release
from:
http://www.sgi.com/products/software/opensource/glx/download.html
ftp://ftp.sgi.com/sgi/opengl/glx/glx1_2.1.tgz
which includes glxext.c as included in XFree86, from which our copies
in glx/ and hw/dmx/glxProxy/ are derived.
Under the terms of version 1.1, "once Covered Code has been published
under a particular version of the License, Recipient may, for the
duration of the License, continue to use it under the terms of that
version, or choose to use such Covered Code under the terms of any
subsequent version published by SGI."
FreeB 2.0 license refers to "dates of first publication". They are here
taken to be 1991-2000, as noted in the original license text:
** Original Code. The Original Code is: OpenGL Sample Implementation,
** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
** Copyright in any portions created by third parties is as indicated
** elsewhere herein. All Rights Reserved.
Official FreeB 2.0 text:
http://oss.sgi.com/projects/FreeB/SGIFreeSWLicB.2.0.pdf
As always, this code has not been tested for conformance with the OpenGL
specification. OpenGL conformance testing is available from
http://khronos.org/ and is required for use of the OpenGL logo in
product advertising and promotion.
This extension provided bug-compatibility with pre-X11R6, but has been
stubbed out in our server since 2006 to return BadRequest when you actually
asked for it.
Formerly the code claimed it could only handle up to 256 visuals, which
was true. Also true, but not explicitly stated, was that it could only
handle visuals with VID < 256. If you have enough screens, and subsystems
that add lots of visuals, you can easily run off the end. (Made worse
because we allocate visual IDs from the same pool as XIDs.) If your app
then chooses a visual > 256, then the Xinerama code would throw BadMatch
on CreateColormap and your app wouldn't start.
With this change, PanoramiXVisualTable is gone. Other subsystems that
were using it as a translation table between each screen's visuals now
use a PanoramiXTranslateVisual() helper.
We need to start breaking the XKB API to enforce sanity, so drag whichever
headers we need to do so into the server tree, as the client API is set in
stone, being part of Xlib.
RISC chips that trap on unaligned loads and stores need to
define __GLX_ALIGN64. This used to get added to the cflags
in the old *.cf files but it no longer does in the modular
X server.
Also, Alpha needs to pass -mieee to the compiler as well.
This is a simple backport of a patch that debian, and probably other
distributions, have been applying forever. To the best of my
knowledge the patch was written by Jurij Smakov. See Debian bug
number #388125.
I just checked and this has been rotting for more than a year in
freedesktop bugzilla as #8392.
Signed-off-by: David S. Miller <davem@davemloft.net>
