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64-bit operations on Atom parts have additional restrictions over their big-core counterparts (validated by later patches). Specifically, the restriction that "Source and Destination horizontal stride must be aligned to the same qword" is violated by most shift operations since NIR uses a 32-bit value as the shift count argument, and this causes instructions like shl(8) g19<1>Q g5<4,4,1>Q g23<4,4,1>UD where src1 has a 32-bit stride, but the dest and src0 have a 64-bit stride. This caused ~4 pixels in the ARB_shader_ballot piglit test fs-readInvocation-uint.shader_test to be incorrect. Unfortunately no ARB_gpu_shader_int64 test hit this case because they operate on uniforms, and their scalar regions are an exception to the restriction. We work around this by effectively unpacking the shift count, so that we can read it with a 64-bit stride in the shift instruction. Unfortunately the unpack (a MOV with a dst stride of 2) is a partial write, and cannot be copy-propagated or CSE'd. Bugzilla: https://bugs.freedesktop.org/101984 |
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| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
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| Makefile.am | ||
| meson.build | ||
| meson_options.txt | ||
| REVIEWERS | ||
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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 https://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.