feb53912f8
GLsync objects had a race condition when used from multiple threads (which is the main point of the extension, really); it could be validated as a sync object at the beginning of the function, and then deleted by another thread before use, causing crashes. Fix this by changing all casts from GLsync to struct gl_sync_object to a new function _mesa_get_and_ref_sync() that validates and increases the refcount. In a similar vein, validation itself uses _mesa_set_search(), which requires synchronization -- it was called without a mutex held, causing spurious error returns and other issues. Since _mesa_get_and_ref_sync() now takes the shared context mutex, this problem is also resolved. Fixes bug #92757, found while developing Nageru, my live video mixer (due for release at FOSDEM 2016). v2: Marek: silence warnings, fix declaration after code Signed-off-by: Steinar H. Gunderson <sesse@google.com> Cc: "11.0 11.1" <mesa-stable@lists.freedesktop.org> Signed-off-by: Marek Olšák <marek.olsak@amd.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.