97 lines
3.5 KiB
Plaintext
97 lines
3.5 KiB
Plaintext
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README for port of Mesa 3.x to XFree86 on OS/2 (X/2)
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(as of 19990514)
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Contents:
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1) Binary release
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2) Building from sources
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3) History
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4) Todo
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5) Mesa Home Page
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1) Binary release
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Though the Mesa sources should build in a quite reasonable time even on
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a 585 class machine a binary relase is available (check topic 4) for an URL)
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This package includes:
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- lib/MesaGL.dll, MesaGL.a
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- lib/MesaGLU.dll, MesaGLU.a
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- lib/glut.dll, glut.a
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- include/GL/*.h
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Installing this in your XFree86 tree will enable you to build and
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run all applications compatible with Mesa (and the current DLL
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interface, of course ;-)
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As usual the OMF-style libraries can be created using emxomf.
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(e.g. "emxomf foo.a" creates the foo.lib omf-style library).
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The static libraries are rarely used and you have to rebuild
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Mesa to get them. They're a supported target, so you get
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them in a straightforward way (see below).
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The testing of these libraries was limited to the supplied
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demos/examples and a quite small number of third-party apps.
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No warranty ... as usual ... ;-)
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2) Instructions to build Mesa 3.x for XFree86/OS2 from sources:
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Except the official Mesa source distribution you need:
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- a recent version of XFree86 (3.3.x or above) including
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the programming libraries
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- EMX 0.9c (0.9d might work, never checked)
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- GNU make
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- REXX (!)
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The creation of the DLLs as well as of the static libraries
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(if you want to have them) is handled in "mklib-emx.cmd",
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a small REXX script. Perhaps not the best idea, but this
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way it fits best in the scheme used to build libraries
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on all platforms in Mesa 3.x.
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To actually build the libraries and demos, check mklib-emx.cmd
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and modify it as desired. Then type
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make os2-x11
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and wait for completion ;-)
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3) History
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Initially Darren Abbott (abbott@hiwaay.net) ported Mesa versions 2.x
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to XFree86 OS/2. This port might still be available from
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http://fly.HiWAAY.net/~abbott/xfree86-os2/xfree86.html
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The current port picked up things during the beta test for 3.0.
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No major changes in the source were done. The build mechanism under OS/2
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has been made very similar to other platforms (if you treat mklib-emx.cmd
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as a "black box").
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Advantage is that X/2 is now a valid target and all files are
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integrated in the official source distribution.
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Disadvantage is that this port (i.e. the DLLs' interface itself) is
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definitly NOT COMPATIBLE to those of version 2.x.
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It's uncertain whether this would be at all possible but since there
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a _very_ few those apps it's not worth to find out anyway.
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Also some libs (MesaTK, MesaAUX) are withdrawn from the Mesa distribution,
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and accordingly from the OS/2 port.
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4) Todo
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By now binary compatiblity is ensured by using the function names
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as entry points instead of ordinals. This might cost performance and
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is subject to change in future. In addition the supplied X86 assembler
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source is not used yet.
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5) Mesa Home Page
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You can get the source code and more information about Mesa from
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http://www.mesa3d.org/
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The OS/2 ports should be available from
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http://r350.ee.ntu.edu.tw/~hcchu/os2/ports
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--
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Alexander Mai
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st002279@hrzpub.tu-darmstadt.de
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