3DFX GLIDE Source Code General Public License

1. PREAMBLE

   This license is for software that provides a 3D graphics application
   program interface (API).The license is intended to offer terms similar
   to some standard General Public Licenses designed to foster open
   standards and unrestricted accessibility to source code. Some of these
   licenses require that, as a condition of the license of the software,
   any derivative works (that is, new software which is a work containing
   the original program or a portion of it) must be available for general
   use, without restriction other than for a minor transfer fee, and that
   the source code for such derivative works must likewise be made
   available. The only restriction is that such derivative works must be
   subject to the same General Public License terms as the original work.

   This 3dfx GLIDE Source Code General Public License differs from the
   standard licenses of this type in that it does not require the entire
   derivative work to be made available under the terms of this license
   nor is the recipient required to make available the source code for
   the entire derivative work. Rather, the license is limited to only the
   identifiable portion of the derivative work that is derived from the
   licensed software. The precise terms and conditions for copying,
   distribution and modification follow.

2. DEFINITIONS

   2.1 This License applies to any program (or other "work") which
   contains a notice placed by the copyright holder saying it may be
   distributed under the terms of this 3dfx GLIDE Source Code General
   Public License.

   2.2 The term "Program" as used in this Agreement refers to 3DFX's
   GLIDE source code and object code and any Derivative Work.

   2.3 "Derivative Work" means, for the purpose of the License, that
   portion of any work that contains the Program or the identifiable
   portion of a work that is derived from the Program, either verbatim or
   with modifications and/or translated into another language, and that
   performs 3D graphics API operations. It does not include any other
   portions of a work.

   2.4 "Modifications of the Program" means any work, which includes a
   Derivative Work, and includes the whole of such work.

   2.5 "License" means this 3dfx GLIDE Source Code General Public License.

   2.6 The "Source Code" for a work means the preferred form of the work
   for making modifications to it. For an executable work, complete source
   code means all the source code for all modules it contains, any
   associated interface definition files, and the scripts used to control
   compilation and installation of the executable work.

   2.7 "3dfx" means 3dfx Interactive, Inc.

3. LICENSED ACTIVITIES

   3.1 COPYING - You may copy and distribute verbatim copies of the
   Program's Source Code as you receive it, in any medium, subject to the
   provision of section 3.3 and provided also that:

           (a) you conspicuously and appropriately publish on each copy
   an appropriate copyright notice (3dfx Interactive, Inc. 1999), a notice
   that recipients who wish to copy, distribute or modify the Program can
   only do so subject to this License, and a disclaimer of warranty as
   set forth in section 5;

           (b) keep intact all the notices that refer to this License and
   to the absence of any warranty; and

           (c) do not make any use of the GLIDE trademark without the prior
   written permission of 3dfx, and

           (d) give all recipients of the Program a copy of this License
   along with the Program or instructions on how to easily receive a copy
   of this License.

   3.2 MODIFICATION OF THE PROGRAM/DERIVATIVE WORKS - You may modify your
   copy or copies of the Program or any portion of it, and copy and
   distribute such modifications subject to the provisions of section 3.3
   and provided that you also meet all of the following conditions:

           (a) you conspicuously and appropriately publish on each copy
   of a Derivative Work an appropriate copyright notice, a notice that
   recipients who wish to copy, distribute or modify the Derivative Work
   can only do so subject to this License, and a disclaimer of warranty
   as set forth in section 5;

           (b) keep intact all the notices that refer to this License and
   to the absence of any warranty; and

           (c) give all recipients of the Derivative Work a copy of this
   License along with the Derivative Work or instructions on how to easily
   receive a copy of this License.

           (d) You must cause the modified files of the Derivative Work
   to carry prominent notices stating that you changed the files and the
   date of any change.

           (e) You must cause any Derivative Work that you distribute or
   publish to be licensed at no charge to all third parties under the
   terms of this License.

           (f) You do not make any use of the GLIDE trademark without the
   prior written permission of 3dfx.

           (g) If the Derivative Work normally reads commands
   interactively when run, you must cause it, when started running for
   such interactive use, to print or display an announcement as follows:

   "COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED THIS
   SOFTWARE IS FREE AND PROVIDED "AS IS," WITHOUT WARRANTY OF ANY KIND,
   EITHER EXPRESSED OR IMPLIED. THERE IS NO RIGHT TO USE THE GLIDE
   TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX INTERACTIVE,
   INC. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A FULL TEXT OF THE
   DISTRIBUTION AND NON-WARRANTY PROVISIONS (REQUEST COPY FROM
   INFO@3DFX.COM)."

           (h) The requirements of this section 3.2 do not apply to the
   modified work as a whole but only to the Derivative Work. It is not
   the intent of this License to claim rights or contest your rights to
   work written entirely by you; rather, the intent is to exercise the
   right to control the distribution of Derivative Works.

3.3 DISTRIBUTION

           (a) All copies of the Program or Derivative Works which are
   distributed must include in the file headers the following language
   verbatim:

   "THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED
   ONLY PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO
   RIGHT TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF
   3DFX INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM
   THE DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC (info@3dfx.com).
   THIS PROGRAM. IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
   EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
   FULL TEXT OF THE NON-WARRANTY PROVISIONS.

   USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
   RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS
   IN TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
   AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
   SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
   THE UNITED STATES.

   COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED"

           (b) You may distribute the Program or a Derivative Work in
   object code or executable form under the terms of Sections 3.1 and 3.2
   provided that you also do one of the following:

                   (1) Accompany it with the complete corresponding
   machine-readable source code, which must be distributed under the
   terms of Sections 3.1 and 3.2; or,

                   (2) Accompany it with a written offer, valid for at
   least three years, to give any third party, for a charge no more than
   your cost of physically performing source distribution, a complete
   machine-readable copy of the corresponding source code, to be
   distributed under the terms of Sections 3.1 and 3.2 on a medium
   customarily used for software interchange; or,

                   (3) Accompany it with the information you received as
   to the offer to distribute corresponding source code. (This alternative
   is allowed only for noncommercial distribution and only if you received
   the program in object code or executable form with such an offer, in
   accord with Subsection 3.3(b)(2) above.)

           (c) The source code distributed need not include anything
   that is normally distributed (in either source or binary form) with
   the major components (compiler, kernel, and so on) of the operating
   system on which the executable runs, unless that component itself
   accompanies the executable code.

           (d) If distribution of executable code or object code is made
   by offering access to copy from a designated place, then offering
   equivalent access to copy the source code from the same place counts
   as distribution of the source code, even though third parties are not
   compelled to copy the source along with the object code.

           (e) Each time you redistribute the Program or any Derivative
   Work, the recipient automatically receives a license from 3dfx and
   successor licensors to copy, distribute or modify the Program and
   Derivative Works subject to the terms and conditions of the License.
   You may not impose any further restrictions on the recipients'
   exercise of the rights granted herein. You are not responsible for
   enforcing compliance by third parties to this License.

           (f) You may not make any use of the GLIDE trademark without
   the prior written permission of 3dfx.

           (g) You may not copy, modify, sublicense, or distribute the
   Program or any Derivative Works except as expressly provided under
   this License. Any attempt otherwise to copy, modify, sublicense or
   distribute the Program or any Derivative Works is void, and will
   automatically terminate your rights under this License. However,
   parties who have received copies, or rights, from you under this
   License will not have their licenses terminated so long as such
   parties remain in full compliance.

4. MISCELLANEOUS

   4.1 Acceptance of this License is voluntary. By using, modifying or
   distributing the Program or any Derivative Work, you indicate your
   acceptance of this License to do so, and all its terms and conditions
   for copying, distributing or modifying the Program or works based on
   it. Nothing else grants you permission to modify or distribute the
   Program or Derivative Works and doing so without acceptance of this
   License is in violation of the U.S. and international copyright laws.

   4.2 If the distribution and/or use of the Program or Derivative Works
   is restricted in certain countries either by patents or by copyrighted
   interfaces, the original copyright holder who places the Program under
   this License may add an explicit geographical distribution limitation
   excluding those countries, so that distribution is permitted only in
   or among countries not thus excluded. In such case, this License
   incorporates the limitation as if written in the body of this License.

   4.3 This License is to be construed according to the laws of the
   State of California and you consent to personal jurisdiction in the
   State of California in the event it is necessary to enforce the
   provisions of this License.

5. NO WARRANTIES

   5.1 TO THE EXTENT PERMITTED BY APPLICABLE LAW, THERE IS NO WARRANTY
   FOR THE PROGRAM. OR DERIVATIVE WORKS THE COPYRIGHT HOLDERS AND/OR
   OTHER PARTIES PROVIDE THE PROGRAM AND ANY DERIVATIVE WORKS"AS IS"
   WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
   BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
   AND PERFORMANCE OF THE PROGRAM AND ANY DERIVATIVE WORK IS WITH YOU.
   SHOULD THE PROGRAM OR ANY DERIVATIVE WORK PROVE DEFECTIVE, YOU ASSUME
   THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

   5.2 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL 3DFX
   INTERACTIVE, INC., OR ANY OTHER COPYRIGHT HOLDER, OR ANY OTHER PARTY
   WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM OR DERIVATIVE WORKS AS
   PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL,
   SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
   INABILITY TO USE THE PROGRAM OR DERIVATIVE WORKS (INCLUDING BUT NOT
   LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES
   SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM OR
   DERIVATIVE WORKS TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH
   HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
   DAMAGES.