
                        Mesa Copyright Information


The Mesa distribution consists of several components.  Different copyrights
apply to different components.  For example, GLUT is copyrighted by Mark
Kilgard, some demo programs are copyrighted by SGI, some of the Mesa
device drivers are copyrighted by the respective authors.

Through version 3.0, the core Mesa library was been distributed under the
GNU Library General Public License.

In Mesa 3.1 (and later) the core library instead uses the XFree86 copyright.
The copyright was being changed so that Mesa could be integrated into the
XFree86 X server in order to support 3D hardware acceleration.  Mesa will
still also be supported as a stand-alone library.

If you have contributed code to Mesa in the past and don't want your
code included in the non-GNU LGPL version please contact Brian to
have your code removed.




Common questions about the copyright change
-------------------------------------------

Q1. Why was the copyright changed?

A1. Mesa is being integrated with XFree86 (the free X server for Linux
and other Unix-like operating systems) in order to better support
3D hardware on Linux.  All code used in XFree86 must use the XFree86
copyright.  3D hardware acceleration on Linux is long overdue.  The
Mesa copyright change will allow better hardware support on Linux in
the near future.


Q2. Is it legal to change the copyright?

A2. Yes, since I (Brian Paul) hold the copyright.


Q3. I contributed code to Mesa while under the GNU copyright and don't
agree with the new copyright.  What can I do?

A3. I'll remove any such code upon request.  So far, no one has made
this request.


Q4. The XFree86 copyright allows people/companies to release binary-only
works derived from the Mesa code.  Isn't that bad?

A4. It's somewhat unfortunate, but acceptable.  However, it really is in a
company's best interest to keep modification to open-source software in the
open-source domain.  See the open-source essays written by Eric Raymond for
the reasoning.  Also note that any such concerns can be applied to the
XFree86 project as well.  It seems to be doing well.



Attention Contributors
----------------------

If you want to contribute to the Mesa project please consider the
copyright issues.  If you contribute a bug fix or new feature to
an existing component you should agree to the copyright on that
component before submitting the bug fix or feature code.

If you want to contribute a new component, such as a new device
driver or demo program, then you can put whatever copyright you want
on your code.  Insert the copyright into all files to avoid confusion.




Mesa component copyrights
-------------------------

Component       Files                 Primary Author      Copyright
-------------------------------------------------------------------------------
core Mesa code  src/*.[ch]            Brian Paul          See below (*)
                include/GL/gl.h

GLU library     src-glu/*             Brian Paul          GNU-LGPL
                include/GL/glu.h

GLX driver      src/X/*               Brian Paul          See below (*)
                include/GL/glx.h
                include/GL/xmesa.h

OS/Mesa driver  src/OSmesa/*          Brian Paul          See below (*)
                include/GL/osmesa.h

3Dfx driver     src/FX/*              David Bucciarelli   GNU-LGPL
                include/GL/fxmesa.h

MGL driver      src/MGL/*             SciTech, Inc        SciTech copyright
                include/GL/mglmesa.h

Windows driver  src/Windows/*         Li Wei              copyright by Li Wei
                include/GL/wmesa.h

SVGA driver     src/SVGA/*            Brian Paul          GNU-LGPL
                include/GL/svgamesa.h

DOS driver      src/DOS/*             Charlie Wallace     GNU-LGPL
                include/GL/dosmesa.h

GGI driver      src/GGI/*             Uwe Maurer          GNU-LGPL
                include/GL/ggimesa.h

S3 driver       src/S3/*              S3, Inc.            S3 copyright

BeOS R4 driver  src/BeOS/*            Brian Paul          See below (*)

GLUT            src-glut/*            Mark Kilgard        Mark's copyright
                include/GL/*glut*.h

demo programs   demos/*               various             see source file

X demos         xdemos/*              Brian Paul          see source file

SGI demos       samples/*             SGI                 SGI copyright

RedBook demos   book/*                SGI                 SGI copyright



(*) Main Mesa Copyright
-----------------------

Mesa code without an explicit copyright is covered by the following
copyright:

Copyright (C) 1999  Brian Paul   All Rights Reserved.

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

----------------------------------------------------------------------
$Id: COPYRIGHT,v 1.4 2000/04/04 15:14:48 brianp Exp $
