Jason Ekstrand
bb96b03461
The previous code always compared integers as 64-bit. Due to variations in sign-extension in the code generated by nir_opt_algebraic.py, this meant that nir_search doesn't always do what you want. Instead, 32-bit values should be matched as 32-bit and 64-bit values should be matched as 64-bit. While we're here we unify the unsigned and signed paths. Now that we're using the right bit size, they should be the same since the only difference we had before was sign extension. This gets the UE4 bitfield_extract optimization working again. It had stopped working due to the constant 0xff00ff00 getting sign-extended when it shouldn't have. Reviewed-by: Iago Toral Quiroga <itoral@igalia.com> Reviewed-by: Eric Anholt <eric@anholt.net> Cc: "17.0 13.0" <mesa-stable@lists.freedesktop.org>
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.