Juha-Pekka Heikkila
306ed81b93
Our hardware has an "accumulator" register, which can be used to store intermediate results across multiple instructions. Many instructions can implicitly write a value to the accumulator in addition to their normal destination register. This is enabled by the "AccWrEn" flag. This patch introduces a new flag, inst->writes_accumulator, which allows us to express the AccWrEn notion in the IR. It also creates a n ALU2_ACC macro to easily define emitters for instructions that implicitly write the accumulator. Previously, we only supported implicit accumulator writes from the ADDC, SUBB, and MACH instructions. We always enabled them on those instructions, and left them disabled for other instructions. To take advantage of the MAC (multiply-accumulate) instruction, we need to be able to set AccWrEn on other types of instructions. Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@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 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.