This is the license for use of the Blue Moon Rendering Tools (BMRT).



Who owns this software?
-----------------------

The Blue Moon Rendering Tools (BMRT), all of the programs
contained therein, and their documentation are:

    (c) Copyright 1990-1999 by Larry I. Gritz.  All Rights Reserved.

Larry Gritz retains all copyright and other legal rights to it.  I
have full documentation that I developed it myself, not for anybody
else, and not for any employer.

This software conforms to the RenderMan Interface Standard, developed
by Pixar.  They require me to state the following:

    The RenderMan (R) Interface Procedures and RIB Protocol are:
        Copyright 1988, 1989, Pixar.  All rights reserved.
    RenderMan (R) is a registered trademark of Pixar.

In addition to the RI procedure and RIB protocol, certain components
distributed with BMRT are Copyright Pixar.  These include the standard
shaders (such as "plastic.sl") and elements of the standard header
files such as "ri.h."

According to the RenderMan Interface Specification document, anybody
may create a program which generates the RenderMan procedure calls or
RIB requests, as long as they include Pixar's copyright and trademark
notice as above.  Also, anybody may write a renderer which executes
the RenderMan procedure calls or RIB requests, as long as they get a
no-charge license from Pixar authorizing them to do so, which I have
done.

This software is what's known as "shareware".  This means you can get
a copy and "evaluate it" for free.  If you decide that you want to
keep using it for commercial gain, you are requested to send me a
"donation."




What can and can't you do with this software?
----------------------------------------------

Unregistered users may use the software for evaluation purposes for as
long as they want, but MAY NOT use this software for commercial gain
of any kind, including profiting from any images or animations created
by this software.

Registered users may distribute any images or animations created by
this software in any means desired (including for commercial gain),
as long as you follow the rules below.

Nobody, not even registered users, may distribute this software in any
way without written authorization from me.  I don't intend to restrict
the distribution of this software, but I want everybody to get it
directly from me.  This is mostly so that I can ensure quality control
and keep track of who is using the software.




What are you expected to do?
----------------------------

I ask for very little:

0. Please register if you are a commercial site!  If you're an
   educational site, you don't have to pay, but please drop me a note
   anyway so I can inform you about updates.

1. If you create any published images or animations using my software,
   where possible/practical, please credit me by placing the following
   notice at the end of your animation, and/or an appropriate credit
   listing for your work:

     Rendering Software...  Blue Moon Rendering Tools

   I realize that this is sometimes impractical (for example, for a 
   feature film).  I understand this, and only expect you to give credits
   only if, when, and to the extent that other contributing software is
   credited.  Just let me know what's going on, I can be very flexible
   about this.

2. If you use the software for something particularly neat (especially if it
   is published in any way), drop me some email.  It'll make me feel good.

3. Please let me know if you find any bugs, preferably by supplying me
   with the smallest and clearest example which makes it fail.  I'm also
   interested in suggestions for improvements for future versions.

4. Tell your friends and colleagues about me and my software (especially if
   you like it).





How much is the registration fee?
---------------------------------

	Student or private citizen for nonprofit         free!

	Commercial / for profit / site license	         US$ 100

The last category not only gives you permission to distribute images
created by this software for commercial gain, but it also gives you a
site license.  In other words, pay once and it will register your
entire lab, university department, or place of business.

How do you know if you're "commercial"?  Ask yourself: am I paid to
create graphical images?  If the answer is yes, you're commercial.
If this is just a hobby, or you're a student, you're not commercial.

Make your check payable to "Blue Moon Systems" and mail it to:

	Blue Moon Systems
	200 Kimblewick Drive
	Silver Spring, MD 20904

Please include your name, organization/affiliation, address, and
email.  Let me know what type of hardware/software you are working on.
Also let me know what types of things you are doing with the software.

Yes, this address is still the place to send the checks, even though
I personally live in California.
	



So what does one get for registering?
-------------------------------------

1. You will be informed when bugs are fixed or new versions released.
   You can update to the new versions free of charge.

2. You can expect me to answer your questions about the BMRT software or
   the RenderMan Interface.  If you find any sort of bug, I will try to 
   find an immediate workaround, and will try to fix the bug in a timely
   manner, if possible.  Of course, non-registered users are invited to
   send me bug reports, especially if they intend to register if I can
   solve their problem.  But if you are not registered, your problems will
   receive lower priority (including, possibly, none).  

3. You will have the satisfaction of knowing that you helped to support
   the development of high-quality, low-cost software.  What else can 
   anyone want?





Additional Disclaimers
----------------------

Don't even think about suing me.  Legally, I am warning you right now
that this software may not do what you want it to do, and it may do
plenty that you don't want.  I won't even guarantee that it will not
cause damage to your computer, ruin your business, or even result in
permanent injury or death.  All of these things are pretty unlikely --
I've been using this software for years, and it even makes very nice
pictures for me.  But as far as I'm concerned, *legally* this software
is being distributed AS-IS, with no guarantees.  Also, I reserve the
right to change any of the terms of this software license for future
releases.

Okay?  Now enjoy.

	-- Larry Gritz
	   Washington, DC
	   September 1994





Contact information:
--------------------

Internet email: lg@bmrt.org

Snail mail:  Larry Gritz
	     c/o Blue Moon Systems
	     200 Kimblewick Drive
             Silver Spring, MD 20904





Other Acknowledgements
----------------------

The TIFF I/O library used by BMRT is:

	Copyright (c) 1988-1997 Sam Leffler
	Copyright (c) 1991-1997 Silicon Graphics, Inc.

This library may be freely distributed, and is available 
from www.libtiff.org

On some platforms, the implementations of rendrib and rgl make use of
the Mesa library, by Brian Paul.  This excellent OpenGL-clone software
is available in source form from www.mesa3d.org

OpenGL is a registered trademark of Silicon Graphics.

Many thanks to the early users of my software, especially Daria
Bergen, Rudy Darken, Tania Fraga, Dave Florek, Won Lee, several
classes of CS-206 (graduate animation), and the many others at the
graphics lab at the George Washington University who served as my
guinea pigs, and to James Hahn, my academic advisor.  Youngser Park of
the GWU graphics lab helped me with the first Linux port.  Also a
special thanks to Michael B. Johnson of the MIT Media Lab, who not
only helped to shake loose a whole bunch of bugs, but who gave me the
kick in the butt that I needed to convince me to distribute my
software.  Finally, thanks to Tony Apodaca of Pixar, for hand-holding
me through the licensing process, as well as illuminating some of the
more obscure parts of the standard that nobody cares about but us.
