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Color clears should respect each drawbuffer's color mask state. Previously, we tried to leave the color mask untouched. However, _mesa_meta_drawbuffers_from_bitfield() ended up rebinding all the color drawbuffers in a different order, so we ended up pairing drawbuffers with the wrong color mask state. The new _mesa_meta_drawbuffers_and_colormask() function does the same job as the old _mesa_meta_drawbuffers_from_bitfield(), but also rearranges the color mask state to match the new drawbuffer configuration. This code was largely ripped off from Gallium's st_Clear code. This fixes ES31-CTS.draw_buffers_indexed.color_masks, which binds up to 8 drawbuffers, sets color masks for each, and then calls glClearBufferfv to clear each buffer individually. ClearBuffer causes us to rebind only one drawbuffer, at which point we used ctx->Color.ColorMask[0] (draw buffer 0's state) for everything. We could probably delete _mesa_meta_drawbuffers_from_bitfield(), but I'd rather not think about the i965 fast clear code. Topi is rewriting a bunch of that soon anyway, so let's delete it then. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94847 Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
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.