
		      The Mesa 3-D graphics library

			      Version 1.2.5

		      Copyright (C) 1995  Brian Paul



Introduction
============

Mesa is a 3-D graphics library with an API which is very similar to that
of OpenGL*.  To the extent that Mesa utilizes the OpenGL command syntax
or state machine, it is being used with authorization from Silicon Graphics,
Inc.  However, the author makes no claim that Mesa is in any way a
compatible replacement for OpenGL or associated with Silicon Graphics, Inc.
Those who want a licensed implementation of OpenGL should contact a licensed
vendor.  This software is distributed under the terms of the GNU Library
General Public License, see the LICENSE file for details.

* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.



Author
======

Brian Paul
Space Science and Engineering Center
University of Wisconsin - Madison
1225 W. Dayton St.
Madison, WI  53706

brianp@ssec.wisc.edu



Status
======

I've been working on this library in my spare time since August, 1993.
It's currently about 90% complete.  You'll find that most programs which
use the OpenGL tk, aux or GLUT toolkits will work with Mesa without changing
the source code at all.

Features which are complete:
	all glBegin() primitives
	all model and view transformations
	clipping (against user clip planes and view volume)
	lighting
	smooth shading
	depth buffering
	accumulation buffer
	alpha testing/blending
	stencil buffer
	dithering
	logic operations
	evaluators  (curves and surfaces)
	feedback/selection
	fog (per-pixel or per-vertex)
	polygon/line stippling
	read/write/copy pixels
	tk and aux libraries for X11
	context switching (multiple windows)
	RGB mode simulated in color mapped windows
	the GLX library (as close as I can get)
	glPixelZoom
	display lists

Features which are mostly complete:
	texture mapping
	the GLU library
	NURBS

Missing features:
	anti-aliasing
	mipmapping, non-point-sampled texture mapping
	glGetTexGen* functions
	glGetPolygonStipple



The primary goal of this library has been correctness, speed was secondary
(but not neglected!).  Optimizations will be the focus of most future work.

The core library was originally written on an Amiga using the DCC compiler.
Later on it was moved to an SGI.  Current development is done on an SGI
system.

Mesa works on most Unix workstations with ANSI C and X11.  There are also
drivers for Microsoft Windows and the Macintosh.  See below for more infor-
mation.

Please send bug reports to the author.  Include information describing
your system, which version of Mesa you're using, and how to reproduce the
problem.  Bug fixes are especially welcome.  Note that some parts of Mesa
(widgets, GLU tesselator, NURBS, etc) were contributed by others and any
bugs in those components should be sent to the respective author.

Anyone is welcome to contribute code to the Mesa project, provided you
agree to the GNU license.

Since the OpenGL API is used, OpenGL documentation can serve as the
documentation for Mesa's core functions.  Here are a few sources:

  Man pages:    http://www.digital.com:80/pub/doc/opengl/
  Spec doc:     http://www.sgi.com/Technology/openGL/glspec/glspec.html




Getting the software
====================

The primary Mesa ftp site is iris.ssec.wisc.edu in the pub/Mesa directory.
There is also a contributors directory in pub/Mesa/contrib.



Manifest
========

The archive file Mesa-1.2.5.tar.Z can be unpacked with:
	zcat Mesa-1.2.5.tar.Z | tar xvf -

The archive file Mesa-1.2.5.tar.gz can be unpacked with:
	gzcat Mesa-1.2.5.tar.gz | tar xvf -

After you unpacking you should have the following:

Mesa/README		- this file
Mesa/LICENSE		- the GNU library license
Mesa/Makefile		- top-level Makefile
Mesa/Make-config	- system configurations used by the Makefiles
Mesa/mklib.*		- scripts for making shared libraries for some systems
Mesa/include/		- application include files
Mesa/lib/		- application libraries, created during installation
Mesa/src/		- source code for core library
Mesa/src-glu/		- source code for utility library
Mesa/src-tk/		- source code for tk library
Mesa/src-aux/		- source code for aux library
Mesa/demos/		- demo programs
Mesa/samples/		- sample OpenGL programs from SGI
Mesa/book/		- example programs from the OpenGL Programming Guide
Mesa/GLUT/		- the home for GLUT
Mesa/widgets/		- the Mesa widgets
Mesa/windows/		- Microsoft Windows driver stuff



Installation for Unix/X11
=========================

To compile the library, first type 'make' alone to see the list of system
configurations currently supported.  If you see your configuration on the
list, type 'make <system>'.  Most popular Unix/X workstations are currently
supported.

The top-level makefile will execute the makefiles in a number of sub-
directories.  When finished, there should be executables in the "demos/",
"samples/", and "book/" directories for you to try out.

If your system is not listed by 'make', you'll have to modify the top-level
Makefile and Make-config files.  There are instructions in each file.

If you have compilation problems you should try to fix them and return the
patches to the author.

The file src/config.h has many parameters which you can tune before building.

If you want to build the Mesa widgets read the widgets/INSTALL file.

If you want to build the GLUT library read the GLUT/README-MESA file.

Note to HP users:  a Mesa user reports that the HP-UX 10.01 C compiler has
a bug which effects glReadPixels.  A patch for the compiler (PHSS_5743) is
available.  Otherwise be sure your compiler is version 10.13 or later.



Installation for Microsoft Windows
==================================

See the windows/README.WIN file for details.  Note that any problems with
the Windows driver should be addressed to Mark Peterson.



Installation for Macintosh
==========================

NOTE:  At this time, the Mac driver does not work with Mesa 1.2.5 because
of changes in the device driver.  Use Mesa 1.2.3 until the Mac driver is
updated.

In addition to the Mesa.tar.Z file you'll also have to get the following
files from the ftp contrib directory:
	GLUT4Mac.sit.hqx
	Mesa4Mac.sit.1.hqx
	Mesa4Mac.sit.2.hqx
Miklos Fazekas (mti-inf@odin.net) should be contacted if you have questions
about the Mac driver.



Using the library (with Unix/X11 systems)
=========================================

Shared libraries:
   If you compile shared libraries you may have to set an environment
   variable to specify where the Mesa libraries are located.  On Linux and
   Sun systems for example, set the LD_LIBRARY_PATH variable to include
   /your-dir/Mesa/lib.   Otherwise, when you try to run a demo it may fail
   with a message saying that one or more libraries couldn't be found.

Header and library files:
   To use the library with your own applications you may want to move the
   files in "include/" to "/usr/local/include/" and the libraries in "lib/"
   to "/usr/local/lib/".  Then compile your graphics application with
   "-I/usr/local/include" and link with "-L/usr/local/lib -lMesaGL -lMesaGLU",
   for example.  Look at the demos/Makefile for an example.

   As of version 1.2.3, Mesa's header files use the same GLenum and GLUenum
   values as SGI's (and most/all other vendor's) OpenGL headers.  This means
   you can freely mix object files compiled with OpenGL or Mesa headers.
   In fact, on systems with dynamic runtime linkers it's possible to dynam-
   ically link with Mesa or OpenGL shared libraries at runtime, without
   recompiling or relinking anything!

   Using IRIX 5.x as an example, you can run SGI's OpenGL demos with the
   Mesa shared libraries as follows.  Let's assume you're installing Mesa
   in /usr/local/Mesa and using the C-shell:
       % cd /usr/local/Mesa
       % make irix5-dso
       % cd lib
       % ln -s libMesaGL.so libGL.so
       % setenv _RLD_LIST "/usr/local/Mesa/lib/libGL.so:DEFAULT"
       % /usr/demos/bin/ideas_ogl      // this is a test

   You can now run OpenGL executables on almost any X display!  There may
   be some problems from the fact that Mesa supports many X visual types
   that an OpenGL client may not expect (grayscale for example).  In this
   case the application may abort, print error messages, or just behave
   strangely.  You may have to experiment with the MESA_RGB_VISUAL envi-
   ronment variable.


Toolkits:
   Initially, you may write your own Mesa programs using the aux or tk tool-
   kits which are used in the OpenGL Programming Guide and in SGI's demos,
   respectively.  However, these toolkits weren't meant for use in real app-
   lications.  You have several alternatives:

      1. Use the GLX (simulated since Mesa doesn't implement the GLX proto-
      col) functions.  These functions look like, and try to act like, the
      real GLX functions used by OpenGL in conjunction with the X window
      system.

      2. GLUT (OpenGL Utility Toolkit) was written by Mark Kilgard at SGI as
      a replacement for aux and tk.  It provides a simple, portable, window-
      system independent interface allowing you to write OpenGL applications
      quickly and easily.  GLUT isn't included with Mesa but you'll find
      instructions on how to get and build GLUT in the file GLUT/README-MESA.

      3. Use a Mesa widgets.  Look in the widgets/ directory for more info.

      4. Go directly to the X/Mesa interface using the functions described
      in include/GL/xmesa.h.  This requires experience with X programming.
      Using GLX is probably a better choice because it's portable.


Performance tips:
   1. Turn off smooth shading when you don't need it (glShadeModel)
   2. Turn off depth buffering when you don't need it.
   3. Use double buffering as it's often faster than single buffering
   4. Compile in the X Shared Memory extension option if it's supported
      on your system by adding -DSHM to CFLAGS and -lXext to XLIBS for
      your system in the Make-config file.
   5. Recompile Mesa with more optimization if possible.
   6. Try to maximize the amount of drawing done between glBegin/glEnd pairs.
      This can be especially beneficial with Mesa 1.2.3 or later because of
      its "vectorized" transformation code.
   7. Use the MESA_BACK_BUFFER variable to find best performance in double
      buffered mode.


Debugging:
   Normally Mesa records but does not notify the user of errors.  It is up
   to the application to call glGetError to check for errors.  Mesa supports
   an environment variable, MESA_DEBUG, to help with debugging.  If MESA_DEBUG
   is defined, a message will be printed to stdout whenever an error occurs.


X Display Modes:
   Mesa supports rendering in most X visual types and depths.  When a
   TrueColor or DirectColor visual isn't available dithering is used in RGB
   mode.

   The glXChooseVisual function tries its best to pick an appropriate visual
   for the given attribute list.  However, if this doesn't suit your needs
   you can force Mesa to use any X visual you want (any supported by your
   X server that is) by setting the MESA_RGB_VISUAL and MESA_CI_VISUAL
   environment variables.  When an RGB visual is requested, glXChooseVisual
   will first look if the MESA_RGB_VISUAL variable is defined.  If so, it
   will try to use the specified visual.  Similarly, when a color index
   visual is requested, glXChooseVisual will look for the MESA_CI_VISUAL
   variable.

   The format of accepted values is:  <visual-class> <depth>
   Here are some examples:

   using the C-shell:
	% setenv MESA_RGB_VISUAL "TrueColor 8"		// 8-bit TrueColor
	% setenv MESA_CI_VISUAL "PseudoColor 12"	// 12-bit PseudoColor
	% setenv MESA_RGB_VISUAL "PseudoColor 8"	// 8-bit PseudoColor

   using the KornShell:
	$ export MESA_RGB_VISUAL="TrueColor 8"
	$ export MESA_CI_VISUAL="PseudoColor 12"
	$ export MESA_RGB_VISUAL="PseudoColor 8"


Double buffering:
   Mesa can use either an X Pixmap or XImage as the backbuffer when in
   double buffer mode.  Using GLX, the default is to use an XImage.  The
   MESA_BACK_BUFFER environment variable can override this.  The valid
   values for MESA_BACK_BUFFER are:  Pixmap and XImage (only the first
   letter is checked, case doesn't matter).

   A pixmap is faster when drawing simple lines and polygons while an XImage
   is faster when Mesa has to do pixel-by-pixel rendering.  Experiment with
   the MESA_BACK_BUFFER variable to see which is faster for your application.  


Colormaps:
   When using Mesa directly or with GLX, it's up to the application writer
   to create a window with an appropriate colormap.  The aux, tk, and GLUT
   toolkits try to minimize colormap "flashing" by sharing colormaps when
   possible.  Specifically, if the visual and depth of the window matches
   that of the root window, the root window's colormap will be shared by
   the Mesa window.  Otherwise, a new, private colormap will be allocated.

   When sharing the root colormap, Mesa may be unable to allocate the colors
   it needs, resulting in poor color quality.  This can happen when a
   large number of colorcells in the root colormap are already allocated.
   To prevent colormap sharing in aux, tk and GLUT, define the environment
   variable MESA_PRIVATE_CMAP.  The value isn't significant.


Fortran bindings:
   Mesa 1.2.4 introduces a preliminary Fortran API to Mesa.  Only a subset
   of the gl* functions are supported at this time.  None of the glu*
   functions are available.  Also, you'll have to write your window system
   interface code in C or use the Fortan interface to GLUT since the GLX,
   XMesa, and widget interfaces don't work with Fortran.

   To use Mesa from Fortran you must include Mesa/include/GL/fgl.h in
   your program.  All the "GL_FOO_BAR" constants are identical in name
   and value to their C counterparts.  API function names, however, are
   different in that they are all prefixed with 'fgl' instead of 'gl.'

   Link your Fortran application with libMesaGL.a just like you would for
   a C application.

   See the Mesa/src/fortran.c file to see how wrappers are constructed
   for each gl* function.  If a function you need doesn't have a wrapper
   yet, please try to implement it yourself then send the new code to
   the author.

   The Fortran interface has only been tested on a few systems (IRIX,
   AIX) at this time.  However, the fortran.c file structure should be
   flexible enough to adapt to most other system's C/Fortran calling
   conventions.  See the comments in that file for more info.

   demos/fdraw.f and demos/ftest.c is an example of using the Fortran API.
   Also read include/GL/fgl.h for comments about Fortran API function
   argument types.


Gamma correction:
   To compensate for the nonlinear relationship between pixel values
   and displayed intensities, there is a gamma correction feature in
   Mesa.  Some systems, such as Silicon Graphics, support gamma
   correction in hardware (man gamma) so you won't need to use Mesa's
   gamma facility.  Other systems, however, may need gamma adjustment
   to produce images which look correct.  If in the past you thought
   Mesa's images were too dim, read on.

   Gamma correction is controlled with the MESA_GAMMA environment
   variable.  Its value is of the form "Gr Gg Gb" or just "G" where
   Gr is the red gamma value, Gg is the green gamma value, Gb is the
   blue gamma value and G is one gamma value to use for all three
   channels.  Each value is a positive real number typically in the
   range 1.0 to 2.5.  The defaults are all 1.0, effectively disabling
   gamma correction.  Examples using csh:

	% setenv MESA_GAMMA "2.3 2.2 2.4"	// separate R,G,B values
	% setenv MESA_GAMMA "2.0"		// same gamma for R,G,B

   The demos/gamma.c program may help you to determine reasonable gamma
   value for your display.  With correct gamma values, the color intensities
   displayed in the top row (drawn by dithering) should nearly match those
   in the bottom row (drawn as grays).

   Mesa implements gamma correction with a lookup table which translates
   a "linear" pixel value to a gamma-corrected pixel value.  There is a
   small performance penalty.  Gamma correction only works in RGB mode.
   Also be aware that pixel values read back from the frame buffer will
   not be "un-corrected" so glReadPixels may not return the same data
   drawn with glDrawPixels.

   For more information about gamma correction see:
   http://www.inforamp.net/~poynton/notes/colour_and_gamma/GammaFAQ.html


Off-screen rendering:
   Mesa 1.2.4 introduced off-screen rendering, a facility for generating
   3-D imagery without having to open a window on your display.  Mesa's
   simple off-screen rendering interface is completely operating system
   and window system independent so programs which use off-screen rendering
   should be very portable.  This new feature effectively enables you to
   use Mesa as an off-line, batch-oriented renderer.

   The "OSMesa" API provides 3 functions for making off-screen renderings:
   OSMesaCreateContext(), OSMesaMakeCurrent(), and OSMesaDestroyContext().
   See the Mesa/include/GL/osmesa.h header for more information.  See the
   demos/osdemo.c file for an example program.   There is no facility for
   writing images to files.

   If you want to generate large images (larger than 1280x1024) you'll
   have to edit the src/config.h file to change MAX_WIDTH and MAX_HEIGHT
   then recompile Mesa.  Image size should only be limited by available
   memory.



Miscellaneous
=============

There is a Mesa WWW page:  http://www.ssec.wisc.edu/~brianp/Mesa.html

There is a Mesa mailing list.  To subscribe, send the following message to
the address listproc@iqm.unicamp.br

subs mesa <your name>

For example:

subs mesa Brian Paul

You will receive a welcome message from the list server when you have been
added to the list.  It tells you how to post messages to the list, how
to unsubscribe, etc.  Thanks to Pedro Vazquez for setting up the list.

There is a contrib/ subdirectory on the Mesa ftp site which contains
contributions from Mesa users.  See the README file in that directory for
more information.



Known Bugs
==========

1. Perspective-corrected texture map coordinate interpolation can fail under
   certain conditions due to numerical error.

2. There may be "cracks" between renderings of adjacent NURBS surfaces.

3. NURBS, for now, can't have attribute info other than geometric data.

4. Evaluator automatic normal vectors are miscalculated under certain
   conditions.

5. glCopyPixels gives undefined results when source and destination regions
   overlap and pixel zoom!=1.0.

6. Mesa doesn't work too well on Crays.  The problem is that Crays do not
   have the exact C data type sizes which Mesa relies on.  Better Cray
   support may or may not be seen in the future.



Version History
===============

1.0 beta   February 1995
    Initial release

1.1 beta   March 4, 1995
    Many improvements:
	- faster point and line drawing (2x faster)
	- more systems supported, better Makefiles
	- many small bug fixes
	- pseudo-GLX functions added
	- GLUT support
	- new implementation of evaluators (eval2.c)
	- Renamed lib*.a files to avoid collisions

1.1.1 beta   March 7, 1995
    Reverted from eval2.c to eval.c due to FPE on Linux
    more speed improvements
    more Makefile changes

1.1.2 beta   March 14, 1995
    Using eval2.c again
    more FPE-prevention checks (0-length normals are OK)
    a few small bug fixes
    much faster pixel logic ops!
    faster transformation arithmetic
    implementation of SGI's blending extensions
    glXUseXFont implemented
    added MESA_DEBUG environment variable support

1.1.3 beta   March 31, 1995
    gluScaleImage() and gluBuild2DMipMaps() implemented
    Mesa widgets for Xt/Motif
    more bug fixes
    blendEXT demos
    added environment variables for selecting visuals
    almost all GLUT demos work correctly now
    faster X device driver functions

1.1.4 beta   April 20, 1995
    Bug fixes:
	- missing #define SEEK_SET in src-tk/image.c
	- compile glShadeModel into display lists
	- fixed pow() domain error in src/light.c
	- fixed "flickering bitmaps" in double buffer mode
	- fixed tk.h and aux.h for C++
	- state of LIGHT_MODEL_LOCAL_VIEWER was inverted
    New features:
	- MUCH, MUCH nicer dithering in 8-bit RGB mode
	- updated widgets and widget demos
	- Implemented GLXPixmap functions
	- Added GLU 1.1 and GLX 1.1 functions
	- Changed the X/Mesa interface API, more versatile
	- Implemented gluPartialDisk()

1.2   May 22, 1995
    Bug fixes:
	- IRIX 4.x makefile problem
	- modified tk to share root colormap as needed
	- gluLookAt normalization problem
	- suppress Expose, NoExpose events in swapbuffers
	- glBitmap() and glDrawPixels() clipping
    New features:
	- GL_BLEND, GL_MODULATE, GL_DECAL, and GL_REPLACE_EXT texture
	      modes implemented
	- texture maps stored more efficiently
	- texture maps can be compiled into display lists
	- Bogdan Sikorski's GLU polygon tesselation code
	- Linas Vepstas's sweep and extrusion library
	- glXCreateContext()'s shareList parameter works as it's supposed to.
	      XMesaCreateContext() updated to accept a shareList parameter too.
	- Mesa can be compiled with real OpenGL .h files
	- MESA_BACK_BUFFER environment variable
	- better GLX error checking

1.2.1   June 22, 1995
    Bug fixes:
	- X/Mesa double buffer window resize crash
	- widgets now pass PointerMotion events
	- X/Mesa incorrect default clear color and drawing color
	- more robust X MIT-SHM support in X/Mesa
	- glTexImage( format=GL_LUMINANCE ) didn't work
	- GL_LINE mode polygons with line width > 1.0 could cause a crash
	- numerous feedback bugs
	- glReadPixels() from depth buffer was wrong
	- error prone depth and stencil buffer allocation
    New features:
	- Preliminary Microsoft Windows driver
	- Implemented a number of missing functions: glEvalCoord[12][df]v(),
	    glGet...(), etc.
	- Added a few missing symbols to gl.h and glu.h
	- Faster rendering of smooth-shaded, RGBA, depth-buffered polygons.
	- Faster rendering of lines when width=2.0
	- Stencil-related functions now work in display lists
    Changes:
	- renamed aux.h as glaux.h (MS-DOS names can't start with aux)
	- most filenames are in 8.3 format to accomodate MS-DOS
	- use GLubytes to store arrays of colors instead of GLints

1.2.2   August 2, 1995
    New features:
	- texture mapped points and lines
	- NURBS! (but not 100% complete)
	- viewports may safely extend beyond window boundaries
	- MESA_PRIVATE_CMAP environment variable
	- Grayscale X display support
	- two new demos:  demos/gears.c and demos/shadow.c
	- MachTen for Macintosh configuration
    Bug fixes:
	- glGet*(GL_DEPTH_BITS) returned bytes, not bits
	- point, line, and bitmap rasterization suffered from roundoff errors
	- fixed a division by zero error in line clippping
	- occasional wrong default background color really fixed!
	- glDepthFunc(GL_ALWAYS) with glDepthMask(GL_FALSE) didn't work
	- gluBuild2DMipmaps malloc problem fixed
	- view volume clipping of smooth shaded lines resulted in bad colors
    Changes:
	- new visual selection method in glXChooseVisual()
	- improved GLU quadric functions
	- call XSync for glFinish and XFlush for glFlush
	- glVertex() calls now use a function pointer to avoid conditionals
	- removed contrib directory from Mesa tar file (available on ftp site)
	- AIX shared library support
	- Removed GLUenum type as it's not in OpenGL

1.2.3   September 26, 1995
    New features:
	- Mesa header files now equivalent to SGI OpenGL headers
	- Support for HP's Color Recovery dithering displays
	- Faster vertex transformation
	- Faster raster operations into X windows under certain conditions
	- New configurations:  HP w/ shared libs, Ultrix w/ GCC, Data General
	- 4-bit visuals now supported
    Bug fixes:
	- glScissor bug fixed
	- round-off errors in clipping lines against clip planes fixed
	- byte swapping between hosts and display servers implemented
	- glGetError() can be called without a current rendering context
	- problem with accidentally culled polygons is fixed
	- fixed some widget compilation problems

1.2.4   November 17, 1995
    New features:
	- More speed improvements (lighting, fogging, polygon drawing)
	- Window system and OS-independent off-screen rendering
	- Preliminary Fortran bindings
	- glPolygonOffsetEXT implemented
	- glColorMask and glIndexMask now fully implemented
	- glPixelZoom implemented
	- display lists fully implemented
	- gamma correction
	- dithering in 8-bit TrueColor/DirectColor visuals
    Changes:
	- Improved device driver interface
	- tk.h renamed to gltk.h to avoid conflicts with Tcl's Tk
	- Dithering support moved from core into device driver
    Bug fixes:
	- glEnable/Disable( GL_LIGHTING ) didn't always take effect
	- glReadPixels byte swapping was broken
	- glMaterial with pname==GL_AMBIENT_AND_DIFFUSE was broken
	- duplicate glColor4b() prototype in GL/gl.h removed
	- stripes in wave -ci demo fixed
	- GL_LINEAR_MIPMAP_NEAREST had wrong value
	- bugs in HP Color Recovery support fixed
	- fixed bug when blending lines, points, bitmaps outside of window

1.2.5   November 30, 1995
    New Features:
	- updated MS Windows driver
	- new implementation of StaticGray/GrayScale visual support
    Bug fixes:
	- pixelzooming with gamma correction or blending didn't work
	- HP color recovery visual wasn't being picked by glXChooseVisual
	- glClear didn't always observe glColorMask changes
	- olympic and offset demos didn't compile on some Suns
	- texcoord clamping wasn't correct
	- a polygon optimization introduced an occasional sampling problem


Coming up:
   better texture mapping
   faster polygon and line drawing



Why is it the library called Mesa?
==================================

Why not?  More obvious names were considered but had to be rejected:
FreeGL (too similar to the trademarked name OpenGL), Free3D (too similar
to DEC's Open3D).  Also, I'm tired of acronyms.

[I've recently discovered that at least two other software products use the
name Mesa.  A name change may be necessary in the future.  Suggestions are
welcome!]



Thanks to
=========

Erich Stefan Boleyn - for the glRotate code and testing early Mesa
Joe Kiniry, Kendall Bennett - for opinions and discussion
Marc Buffat - for the gluProject and gluUnproject functions
Bernd Barsuhn, Volker Weiss - for the new implementation of evaluators
Philip Brown - for the initial GLX, GLUT implementation
Thorsten Ohl - for glXUseXFont() and glBitmap bug fixes
Thomas Malik - for new invert_matrix and other xform.c code
Michael Pichler - for X colormap code
Thorsten Ohl, Jeroen van der Zijp - for the widget set
Bob Mercier - for the new 8-bit RGB dithering code
Pedro Vazquez - for establishing the Mesa mailing list
Bogdan Sikorski - for the GLU polygon tesselation code and NURBS
Linas Vepstas - for his extrusion and swept surface library
Frederic Devernay - for improved X shared memory support
Asif Khan - for bringing _many_ subtle bugs to my attention
Mark Peterson - for the MS Windows driver for Mesa
Gene Lett and Kerris Renkin - for diagnosing several rasterization problems
Alex De Bruyn - for HP Color Recovery display support
Miklos Fazekas - for the Macintosh driver
Frederic Devernay - for many Sun configs and lots of useful feedback

Your contributions are greatly appreciated!



This file last revised:  30 November 1995
