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authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2015-02-02 15:02:49 +0100
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-
-
-Mesa Threads README
--------------------
-
-Thread safety was introduced in Mesa 2.6 by John Stone and
-Christoph Poliwoda.
-
-It was redesigned in Mesa 3.3 so that thread safety is
-supported by default (on systems which support threads,
-that is). There is no measurable penalty on single
-threaded applications.
-
-NOTE that the only _driver_ which is thread safe at this time
-is the OS/Mesa driver!
-
-
-At present the mthreads code supports three thread APIS:
- 1) POSIX threads (aka pthreads).
- 2) Solaris / Unix International threads.
- 3) Win32 threads (Win 95/NT).
-
-Support for other thread libraries can be added src/glthread.[ch]
-
-
-In order to guarantee proper operation, it is
-necessary for both Mesa and application code to use the same threads API.
-So, if your application uses Sun's thread API, then you should build Mesa
-using one of the targets for Sun threads.
-
-The mtdemos directory contains some example programs which use
-multiple threads to render to osmesa rendering context(s).
-
-Linux users should be aware that there exist many different POSIX
-threads packages. The best solution is the linuxthreads package
-(http://pauillac.inria.fr/~xleroy/linuxthreads/) as this package is the
-only one that really supports multiprocessor machines (AFAIK). See
-http://pauillac.inria.fr/~xleroy/linuxthreads/README for further
-information about the usage of linuxthreads.
-
-If you are interested in helping with thread safety work in Mesa
-join the Mesa developers mailing list and post your proposal.
-
-
-Regards,
- John Stone -- j.stone@acm.org johns@cs.umr.edu
- Christoph Poliwoda -- poliwoda@volumegraphics.com
-
-
-Version info:
- Mesa 2.6 - initial thread support.
- Mesa 3.3 - thread support mostly rewritten (Brian Paul)