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The stated bug describes a scenario in which a post sync write operation for depth or timestamp can be ignored. There are two workarounds suggested, the first and easier is to simply do a cs stall when we do these type of writes. The second option is to do a PIPE_CONTROL flush after the post sync but before the data is required. Generally, I believe the data written out is consumed by the application on the CPU side and so doing the easier of the two is ideal. Furthermore, these queries aren't tremendously common in the perf sensitive apps I have looked at. However, there could be cases where a shader stage might directly consume the data, and as a result option 2 may be desirable. This patch goes with the easier solution for now. gen9lp bug_de_id=2137196 By itself, this does *not* fix any of the GT4 hangs we're currently experiencing. Cc: Mika Kuoppala <mika.kuoppala@intel.com> Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com> |
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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.