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Brian Paul
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docs/README.BEOS
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docs/README.BEOS
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NOTE: The BeOS driver hasn't been updated since Mesa version 2.6.
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I'm in the process of writing a new BeOS R4 driver for Mesa 3.x.
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-Brian (29 Jan 1999)
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Mesa / BeOS Information
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========================================================
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MESA 2.6 BEOS PORT RELEASE 2
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========================================================
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Introduction
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BeOS notes
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--------------------------------------------------------
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Mesa 3.1 features a new driver for the BeOS. The new driver implements
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a clone of the BGLView class. This class, derived from BView, allows
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OpenGL rendering into a BeOS window.
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The BeOS driver is implemented through Mesa's
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Off-Screen rendering interface. This is the best way
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to integrate it into the C++ framework of the BeOS.
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As of this second port, the mesa accelerated 3Dfx driver
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is also supported.
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The TK and AUX are partially supported but somewhat unstable.
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Any application which uses the BGLView should be able to use Mesa
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instead of Be's OpenGL without changing any code.
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Installing the library
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--------------------------------------------------------
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You'll have to build the library, and copy the files from
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Mesa2.6/lib/ into your /boot/home/config/lib/ directory.
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Since Be's OpenGL implementation (as of R4) is basically just the
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SGI sample implementation, it's pretty slow. You'll see that Mesa
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is considerably faster.
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Rebuilding the library
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--------------------------------------------------------
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Type 'make beos-ppc', 'make beos-x86', or 'make beos-glide' (for the accelerated version)
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in the Mesa2.6/ directory to compile the library and the demos.
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You will naturally need the unlimited linker.
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Source Code
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For the x86 version you will have to play with the OSMesaCreateContext() parameters
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as the OSMESA_BGRA used in the ppc version makes the colors screwy in the x86
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version (damn little endian CPU....), see line 897 of src-tk/tkbeos.cpp and
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include/GL/osmesa.h for more info.
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The glide version expects the lib3DfxGlide2X.so library to be in your
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/boot/home/config/lib directory, and the glide/ directory (containing
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at least the include/ directory) to be in the same directory as the
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Mesa-2.6 directory. These files are in the glide.zip package, see the
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changes section.
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The source code for the driver is in Mesa-3.1/src/BeOS/GLView.cpp
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It's not 100% finished at this time but many GLUT-based demos are
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working. Specifically, color index mode isn't implemented at all.
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No optimizations have been made at this time. Any volunteers?
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BeOS demos
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--------------------------------------------------------
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I have converted some of the supplied demo into
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BeOS specific code to show how to integrate
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Mesa into your own projects. Look in the BeOS/
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directory to test them.
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NOTE that these demos directly use the OSMesa driver and
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don't work with the glide version of the library. Looking
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at src-tk/tkbeos.cpp it should be trivial to convert them
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to an accelerated version.
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For animation demos try the 'wave' and the 'logo'
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demo:
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Compiling
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wave demo keys:
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c Toggle contouring mode.
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s Toggle flat/smooth shade mode.
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l Toggle lighting mode.
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d Toggle depth checking mode.
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a Toggle spin mode.
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logo demo keys:
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LEFT Rotate.
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RIGHT Rotate
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UP Move clipping plane.
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DOWN Move clipping plane.
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Z Translate.
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z Translate.
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1 Use GL_POINT polygon mode.
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2 Use GL_LINE polygon mode.
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3 Use GL_FILL polygon mode.
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p Toggle polygon fill modes.
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4 Use GL_NICEST for GL_POLYGON_SMOOTH_HINT.
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5 Use anti-aliased polygon mode.
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6 Use aliased polygon mode.
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8 Toggle dither mode.
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9 Toggle stipple polygon mode.
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0 Toggle flat/smooth shading mode.
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q Disable cull mode.
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w Use front face cull mode.
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e Use back face cull mode.
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r Use clockwise front face mode.
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t Use counter-clockwise front face mode.
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y Use MSB first stipple pattern.
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u Use LSB first stipple pattern.
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a Use brick texture map.
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s Use checker texture map.
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d Disable texture map.
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f Use decal texture environment mode.
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g Use modulate texture environment mode.
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Simply cd to the Mesa-3.x directory and type "make beos-r4".
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When it finishes the libMesaGL.so and libMesaGLU.so libraries for
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BeOS will be in the Mesa-3.x/lib/ directory.
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How to compile the other demos in samples/ and demos/
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--------------------------------------------------------
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Just type
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'mwcc demo.c -I../include ../lib/libMesaGL.so'
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Example Programs
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or something similar. I especially like the
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isosurf.c in demos/ ...
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NOTE: R3 has broken the demos, due to some of the code in BeBuild.h. Either make sure that file isn't included or comment out the stuff in the GL section if you want to build the demos.
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Changes
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-------
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In the second release I (Duncan Wilcox) have reworked
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the Makefiles a bit, and added out of the box support for
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the 3Dfx drivers by David Bucciarelli. To use or build the
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3Dfx versions, you'll need the Glide driver ported to BeOS
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by Be, Inc. The file is called glide.zip, and currently is
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at ftp://ftp.be.com/pub/samples/preview/graphics/glide.zip
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I didn't have time to work on a BeOS version of GLUT, but
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the version that Jake Hamby (jehamby@be.com) ported is probably
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the best start, if you want to try and adapt it to Mesa. You
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can find that at ftp://ftp.be.com/pub/beos_updates/developers/glut-3.5.zip
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While it's a bit of a hack, you'll find that src-tk/tkbeos.cpp
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provides most of the ideas to use Mesa in a BeOS application both for
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off screen and accelerated rendering.*
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The libraries have been split into four (libMesaGL.so, libMesaGLU.so, libMesatk.so,
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and libMesaaux.so).
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Tinic Uro did most of the work with the first BeOS port, at DR8.2 time.
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Look in the Mesa-3.x/BeOS/ directory for one or two BGLView demo
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programs. They should have been compiled along with the Mesa
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library.
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*The tkbeos.cpp file has been updated slightly to fix some mouse problems.
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Also the Makefiles have been updated to support x86 versions.
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ToDo
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--------------------------------------------------------
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GLUT
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- implementing a BeOS context.
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- Better support of the TK and AUX package.*
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- Speedups
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- split into four shared libraries.**
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- bugfixes
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- a FXhack similar to the X driver, to use glide
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acceleration in a window
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It seems that you have to recompile GLUT with libMesaGL.so instead
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of libGL.so in order for everything to work. I'm not sure why.
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*fixed, see Changes section above.
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**Done.
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In any case, you'll have to download and compile GLUT for BeOS and
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put libglut.so in the Mesa-3.x/lib/ directory before you can compile
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the demos/, samples/ and book/ programs.
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Author
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--------------------------------------------------------
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GLUT for BeOS can be found at: ??? fill-in ???
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Send bugreports, comments and other stuff to:
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This is a special version of GLUT adapted for the BeOS. I don't
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believe Mark Kilgard's normal GLUT distribution includes BeOS
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support.
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Tinic Uro <5uro@informatik.uni-hamburg.de>
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or
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Duncan Wilcox <duncan@mclink.it>
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Old BeOS Driver
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or
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Ed Silva <esilva@earthlink.net>
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Mesa 2.6 had an earlier BeOS driver. It was based on Mesa's Off-screen
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rendering interface, not BGLView. If you're interested in the older
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driver you should get Mesa 2.6.
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BeOS and Glide
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Mesa 3.0 supported the 3Dfx/Glide library on Beos. Download Mesa 3.0
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if interested. Ideally, the 3Dfx/Glide support should be updated to
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work with the new Mesa 3.1 BGLView implementation.
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----------------------------------------------------------------------
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$Id: README.BEOS,v 1.3 1999/02/06 06:32:20 brianp Exp $
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