Thomas Hellstrom
0864f9c77a
If two contexts wanted to access the same buffer at the same time, it would end up on two validation lists simultaneously, which might cause a PIPE_ERROR_RETRY when trying to validate it from one context while the other context already had it validated but not yet fenced. In that situation we could spin until the error goes away, or apply various more or less expensive locking schemes to save cpu. Here we use a scheme that briefly locks after fencing but avoids locking on validation in the non-contended case. v2: Make sure we broadcast not only on releasing buffers after fencing, but also after releasing buffers in the pb_validate_validate error path. v3: Don't broadcast on PIPE_ERROR_RETRY because that would increase the chance of starvation. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.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 https://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.