home *** CD-ROM | disk | FTP | other *** search
-
-
- Instructions for Using GLUT with Mesa
-
-
- Mark Kilgard's GLUT (OpenGL Utility Toolkit) is a nice OpenGL toolkit
- which allows one to write OpenGL applications without having to know
- anything about the window system and its interface to OpenGL. It is
- much nicer than the aux and tk toolkits initially used by SGI and
- should be preferred over aux or tk when writing new programs.
-
- At this time I'm not including GLUT with Mesa but may do so in the future.
- I have successfully compiled and tested GLUT with Mesa on an SGI workstation.
- I don't know what problems may pop up on other systems.
-
- In any case, here's what you should do to use version 2.2 of GLUT with Mesa:
-
-
- 1. Ftp to sgigate.sgi.com and go to the pub/opengl/xjournal/GLUT directory.
- Get the glut.2.2.tar.Z file. Make sure your copy ends up in this dir-
- ectory (i.e. Mesa/GLUT/).
-
- 2. Unpack the GLUT distribution file with:
- zcat glut.2.2.tar.Z | tar xvf -
-
- 3. Make a backup copy of Glut.cf in case you want the original:
- cp Glut.cf Glut.cf.orig
-
-
- 4. If you're using a Sun with Solaris then define the following two
- environment variables from your shell:
-
- OGLHOME to where you've installed Mesa (maybe /usr/home/brian/Mesa)
- OPENWINHOME to something like /usr/openwin
-
- Otherwise, edit Glut.cf as follows:
-
- change: EXTRA_INCLUDES = -I$(TOP)
- to look like: EXTRA_INCLUDES = -I$(TOP)/../include -I$(TOP)
-
- change: OPENGL = -lGL
- to look like: OPENGL = $(TOP)/../lib/libMesaGL.a
-
- change: GLU = -lGLU
- to look like: GLU = $(TOP)/../lib/libMesaGLU.a
-
-
- 5. Run the mkmkfiles.imake script:
- mkmkfiles.imake
-
- 6. Run make:
- make
-
- 7. If all goes well there should be some executables in the progs/
- directories for you to try out.
-
- 8. You may want to copy the lib/glut/libglut.a file to wherever you have
- your Mesa libraries (libMesaGL.a, libMesaGLU.a, etc) if you're going to
- use it for your own work.
-
-
-
- If something goes wrong during compilation, you're best off trying to
- diagnose and fix the problem yourself. Send me the patches when you figure
- out the solution.
-
- If you have run-time problems you can send me an email with a detailed
- description of the problem. I'll see what I can do.
-
- Don't bother Mark Kilgard with problems unless you're absolutely sure
- the problem is in the GLUT code. I don't want him to be bothered by
- potential Mesa problems.
-
-
-
- How GLUT works with Mesa
- ------------------------
-
- GLUT makes calls to a number of GLX functions to bind OpenGL to X. Mesa
- hasn't implemented any GLX functions until now. Philip Brown at Berkeley
- implemented the initial pseudo-GLX functions and got GLUT to run with them.
- I rewrote much of Philip's GLX code to support more features, more reliably.
-
- If you want to use the GLX functions in your programs be aware that:
- 1. they've not been fully tested
- 2. they are not as "tight" as the real GLX functions, i.e. what
- works with Mesa's GLX functions might not work with the real
- OpenGL/GLX interface.
- 3. a number of the functions are only stubs (not implemented)
- 4. read the glx.h file for more detailed info
-
-
- -Brian
-
-