Roland Scheidegger
ea227f4322
Similar to const buffers. The driver must not emit any tes-related state if tes is disabled, since the hw slots are all shared by VS, therefore it would overwrite them (the mesa state tracker might not do this, but it would be perfectly legal to do so). Nevertheless I think the dirty state tracking logic in the driver is fundamentally flawed when tes is disabled/enabled, since it looks to me like the VS (and TES) state would not get reemitted to the correct slots (if it's not dirty anyway). Unless I'm missing something... Theoretically, the overwrite problem could be solved by using non-overlapping resource slots for TES and VS (since we're not even close to using half the resource slots), but it wouldn't work for constant buffers nor samplers, and for VS would still need to propagate changes to both LS and VS, so probably not a useful idea. Unfortunately there's zero coverage of this with piglit, since all tessellation shader tests are just shader_runner tests, which are unsuitable for testing any kind of state dependency tracking issues (so I can't even quickly hack something up to proove it and fix it...). TCS otoh is just fine - like GS it has its own hw slots. Tested-by: Konstantin Kharlamov <hi-angel@yandex.ru> Reviewed-by: Dave Airlie <airlied@redhat.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 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.