OpenGL Licensing Programs
Application developers do not need to license the OpenGL API. Generally,
hardware vendors that are creating binaries to ship with their hardware
are the only developers that need to have a license. If an application
developer wants to use the OpenGL API, the developer needs to obtain copies
of a linkable OpenGL library for a particular hardware device or machine.
Those OpenGL libraries may be bundled with the development and/or run-time
options or may be purchased from a third-party software vendor without
licensing the source code or use of the OpenGL trademark.
The following are the currently available licenses:
- Open source license, for use of the S.I.. This is a
Free Software License B closely modeled on BSD, X, and Mozilla
licenses.
- Trademark License. for new licensees who want to use the OpenGL
trademark and logo and claim conformance. This license is available
free of charge if you are developing open source implementations on open
source platforms. For closed source licenses or licenses on proprietary
platforms, a charge will be associated with a trademark license.
As an added note, past Level 3 licensees could distribute modified OpenGL
source code only to either level 2 or level 3 licensees. With release of
the S.I. to open source, SGI has relaxed this requirement to some extent.
Provided the distributor (a current level 3 licensee) is willing to sign a
Retro Agreement with SGI and change the copyrights on the code to the
open source copyrights (and then submit the code to SGI for inspection), the distributee
does not have to be a level 2 or level 3 licensee. If the Distributor
chooses not to do the preceding, then the distributee must become a level
2 Licensee.
New open source licenses of the OpenGL S.I. can freely distribute
source and modified source within the liberal terms of the open source license.
Note Licenses for Windows® platforms ARE obtained directly
from Microsoft. Developers should send an e-mail to
ihv@microsoft.com
with the words line 3-D Graphics DDK Licenses in the subject line.
In the past, licenses included source code (depending upon the license) and
documentation. Currently, all the source code is available as open source
and the documentation is available on the opengl.org website. So licenses now convey rights and have no
deliverables associated with them.
OpenGL Logo Style Guidelines for Print
The OpenGL logo changed and evolved into a new identity in November
1996. This page contains digital display and printing guidelines
for the new OpenGL logo usage. Establishing a strong identity
plays an important role in the success of any product. This is
achieved through a consistent look and feel in all communications
including advertising, brochures, packaging, technical publications,
marketing materials, on-screen demos, forms, legal documents,
and the Web.
We urge you to use the OpenGL logo in an original electronic file
format. Using an original file ensures the integrity of the identity.
Maintaining logo usage format and color standards are of vital
importance. Through adherence to the guidelines described, a strong
cohesive visual image will reinforce the OpenGL name and industry
presence.
Color Specifications
The OpenGL logo should be reproduced in the two-color version
whenever possible. The two colors are Pantone 646 (blue), and
Black. When it is reproduced in four-color process, match against
a Pantone color swatch (cyan: 69%, magenta: 8.5%, black: 23.5%).
These two verisons are to be used only against a light background.
When the logo is reproduced in one color (100 or higher linescreen)
use the greyscale version. If using 85 or lower linescreen use
the 100% black version. When the logo appears against a dark background
use the reversed-out version. The dropshadow is used only when
the logo is at least one inch wide and in color.
Minimum Size
The OpenGL logo should never be reproduced smaller than 3/4" width (proportionally) on print materials.
Clear Space
The "clear space" guideline is to ensure legibility and easy recognition.
No written information or other company logos should appear within
the specificed area.
Logo Integrity
Never alter the OpenGL logo. To maintain the integrity of the
logo, use the electronic file. This will ensure proper size, proportion,
and color separation.
Web Usage
When reproducing the OpenGL logo on the Web, always use the color
version with the dropshadow (unless it's against a dark background)
or use any of the animated versions. When reproducing against a dark
background, use the reversed-out version shown above. The minimum size is 1" width.
Trademark/Copyright
SGI's OpenGL licensees may use the OpenGL trademark
in print in accordance with these guidelines (PDF 122K),
as provided by their license agreement. These guidelines are
intended to assure proper use of the OpenGL trademark, to preserve
its distinctiveness and enhance its value for everyone's mutual
benefit.
