Kenneth Graunke
53a9b6223f
While most align16 instructions only support a SubRegNum of 0 or 4 (using swizzling to control the other channels), 3-src instructions actually support arbitrary SubRegNums. When the RepCtrl bit is set, we believe it ignores the swizzle and uses the equivalent of a <0,1,0> region from the subnr. In the past, we adopted a vec4-centric approach of specifying subnr of 0 or 4 and a swizzle, then having brw_eu_emit.c convert that to a proper SubRegNum. This isn't a great fit for the scalar backend, where we don't set swizzles at all, and happily set subnrs in the range [0, 7]. This patch changes brw_eu_emit.c to use subnr and swizzle directly, relying on the higher levels to set them sensibly. This should fix problems where scalar sources get copy propagated into 3-src instructions in the FS backend. I've only observed this with TES push model inputs, but I suppose it could happen in other cases. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Matt Turner <mattst88@gmail.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.