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On Haswell we need to set the UAV_ONLY WM state bit when there are no colour or depth buffer writes and on all hardware we should set the early depth/stencil control field to PSEXEC unless early fragment tests are enabled to make sure that the fragment shader is executed regardless of whether per-fragment tests pass or not as the spec requires. So far we have been doing this for images only, but we should apply the same treatment to all side effectful scenarios. Suggested by Curro. This is not strictly required for compliance with the original ARB_shader_atomic_counters extension, it's only necessary to get the execution semantics specified in GL4.2+ right. v2: - Mark active_fs_has_side_effects as constant. (Curro) - Mention that this is only only necessary to get the execution semantics specified in GL4.2+ right. (Curro) Reviewed-by: Francisco Jerez <currojerez@riseup.net> |
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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.