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We were not accounting for subreg_offset in the check for the start of the region. Also, fs_reg::regs_read() already takes the stride into account, so we should not multiply its result by the stride again. This was making copy-propagation fail to copy-propagate cases that would otherwise be safe to copy-propagate. Again, this was observed in fp64 code, since there we use stride > 1 often. v2 (Sam): - Rename function and add comment (Jason, Curro). - Assert that register files and number are the same (Jason). - Fix code to take into account the assumption that src.subreg_offset is strictly less than the reg_offset unit (Curro). - Don't pass the registers by value to the function, use 'const fs_reg &' instead (Curro). - Remove obsolete comment in the commit log (Curro). v3 (Sam): - Remove the assert and put the condition in the return (Curro). - Fix function name (Curro). Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Francisco Jerez <currojerez@riseup.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.