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Previously, we were saving off the last nir_block in a vtn_block before moving on so that we could find the nir_block again when it came time to handle phi sources. Unfortunately, NIR's control flow modification code is inconsistent when it comes to how it splits blocks so the block pointer we saved off may point to a block somewhere else in the shader by the time we get around to handling phi sources. In order to get around this, we insert a nop instruction and use that as the logical end of our block. Since the control flow manipulation code respects instructions, the nop will keeps its place like any other instruction and we can easily find the end of our block when we need it. This fixes a bug triggered by a couple of vkQuake shaders. Signed-off-by: Jason Ekstrand <jason@jlekstrand.net> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97233 Cc: "12.0" <mesa-stable@lists.freedesktop.org> Tested-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> |
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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.