f3ec9d33c6
The queryid_valid() function asserts that an ID given by an application isn't zero since the spec explicitly reserves an ID of zero as invalid. The implementation was written as if the ID was a signed integer and based on the assumption that queryid_to_index() is simply subtracting one from the ID. It was broken because in fact the ID was stored in an unsigned int and testing for an index >= 0 would always succeed. This adds a spec quote to clarify why zero is considered invalid and checks for zero before even passing the ID to queryid_to_index() for then checking the upper bound. This is a v2 of a patch originally posted by Juha-Pekka (thanks) Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Signed-off-by: Robert Bragg <robert@sixbynine.org> Reviewed-by: Plamena Manolova <plamena.manolova@intel.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.