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A while back I switched intel_blit_framebuffer to prefer Meta over the BLT. This meant that Gen8 platforms would start using the 3D engine for blits, just like we do on Gen6-7.5. However, I hadn't considered Gen4-5 when making that change. The BLT engine appears to be substantially faster on 965GM than using Meta to drive the 3D engine. This isn't too surprising: original Gen4 doesn't support tile offsets (that came on G45), and the level/layer fields don't work for cubemap rendering, so for inconvenient miplevel alignments, we end up blitting or copying data to/from temporaries in order to render to it. We may as well just use the blitter. I chose to use the BLT on Gen4-5 because they use the same ring for both 3D and BLT; Gen6+ splits it out. Fixes regressions on 965GM due to botched tile offset code (we should fix those properly as well, but they're longstanding bugs - for now, put things back to the status quo). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89430 Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Cc: "10.5" <mesa-stable@lists.freedesktop.org> |
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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 osmesa to build classic osmesa driver; or 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.