Roland Scheidegger
78a997f728
This was kind of strange, since it replaced indices which were only overflowing due to bias with MAX_UINT. This would cause an overflow later in the shader, except if stride was 0, however the vertex id would be essentially random then (-1 + eltBias). No test cared about it, though. So, drop this and just use ordinary int arithmetic wraparound as usual. This is much simpler to understand and the results are "more correct" or at least more consistent (vertex id as well as actual fetch results just correspond to wrapped around arithmetic). There's only one catch, it is now possible to hit the cache initialization value also with ushort and ubyte elts path (this wouldn't be an issue if we'd simply handle the eltBias itself later in the shader). Hence, we need to make sure the cache logic doesn't think this element has already been emitted when it has not (I believe some seriously bad things could happen otherwise). So, borrow the logic which handled this from the uint case, but not before fixing it up... Reviewed-by: Jose Fonseca <jfonseca@vmware.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 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.