Eric Anholt
e473fbe469
Small immediates have the downside of taking over the raddr B field, so you might have less chance to pack instructions together thanks to raddr B conflicts. However, it also reduces some register pressure since it lets you load 2 "uniform" values in one instruction (avoiding a previous load of the constant value to a register), and increases some pairing for the same reason. total uniforms in shared programs: 16231 -> 13374 (-17.60%) uniforms in affected programs: 10280 -> 7423 (-27.79%) total instructions in shared programs: 40795 -> 41168 (0.91%) instructions in affected programs: 25551 -> 25924 (1.46%) In a previous version of this patch I had a reduction in instruction count by forcing the other args alongside a SMALL_IMM to be in the A file or accumulators, but that increases register pressure and had a bug in handling FRAG_Z. In this patch is I just use raddr conflict resolution, which is more expensive. I think I'd rather tweak allocation to have some way to slightly prefer good choices for files in general, rather than risk failing to register allocate by forcing things into register classes.
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 mesagdi to build classic mesa Windows GDI drivers; 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.