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There was a comment saying that in SIMD16 mode the pixel interpolator returns coords interleaved 8 channels at a time and that this requires extra work to support. However, this interleaved format is exactly what the PLN instruction requires so I don't think anything needs to be done to support it apart from removing the line to disable it and to ensure that the message lengths for the send message are correct. I am more convinced that this is correct because as it says in the comment this interleaved output is identical to what is given in the thread payload. The code generated to apply the plane equation to these coordinates is identical on SIMD16 and SIMD8 except that the dispatch width is larger which implies no special unmangling is needed. Perhaps the confusion stems from the fact that the description of the PLN instruction in the IVB PRM seems to imply that the src1 inputs are not interleaved so it wouldn't work. However, in the HSW and BDW PRMs, the pseudo-code is different and looks like it expects the interleaved format. Mesa doesn't seem to generate different code on IVB to uninterleave the payload registers and everything is working so I can only assume that the PRM is wrong. I tested the interpolateAt tests on HSW and did a full Piglit run on IVB on there were no regressions. Reviewed-by: Chris Forbes <chrisf@ijw.co.nz> |
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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.