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Some meta operations can be called recursively. Future changes (the "Don't pollute the ... namespace" changes) will cause objects with invalid names to be used. If a nested meta operation tries to restore an object named 0xDEADBEEF, it will fail. This also fixes another latent bug in meta. In a multithreaded, multicontext application, one thread can delete an object that is bound in another thread. That object continues to exist until it is unbound (i.e., its refcount drops to zero). Meta unbinds objects all over the place. As a result, the rebind in _mesa_meta_end could fail because the object vanished! See https://bugs.freedesktop.org/show_bug.cgi?id=92363#c8. Using _mesa_reference_<object type> to save and restore the objects prevents the refcount from going to zero. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92363 Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
File: docs/README.WIN32 Last updated: 21 June 2013 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons libgl-gdi to build gallium based GDI driver. This will work both with MSVS or Mingw. Windows Drivers ------- ------- At this time, only the gallium GDI driver is known to work. Source code also exists in the tree for other drivers in src/mesa/drivers/windows, but the status of this code is unknown. Recipe ------ Building on windows requires several open-source packages. These are steps that work as of this writing. - install python 2.7 - install scons (latest) - install mingw, flex, and bison - install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe - install git - download mesa from git see http://www.mesa3d.org/repository.html - run scons General ------- After building, you can copy the above DLL files to a place in your PATH such as $SystemRoot/SYSTEM32. If you don't like putting things in a system directory, place them in the same directory as the executable(s). Be careful about accidentially overwriting files of the same name in the SYSTEM32 directory. The DLL files are built so that the external entry points use the stdcall calling convention. Static LIB files are not built. The LIB files that are built with are the linker import files associated with the DLL files. The si-glu sources are used to build the GLU libs. This was done mainly to get the better tessellator code. If you have a Windows-related build problem or question, please post to the mesa-dev or mesa-users list.