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It's possible to bind a smaller buffer as a constant buffer, than what the shader actually uses/requires. This could cause nasty crashes. This patch adds the architecture to pass the maximum allowable constant buffer index to the jit to let it make sure that the constant buffer indices are always within bounds. The behavior follows the d3d10 spec, which says the overflow should always return all zeros, and overflow is only defined as access beyond the size of the currently bound buffer. Accesses beyond the declared shader constant register size are not considered an overflow and expected to return garbage but consistent garbage (we follow the behavior which some wlk tests expect which is to return the actual values from the bound buffer). Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Jose Fonseca <jfonseca@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com> Reviewed-by: Roland Scheidegger <sroland@vmware.com> |
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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 osmesa mesagdi to build classic mesa Windows GDI drivers; or 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. 1) install python 2.7 2) install scons (latest) 3) install mingw, flex, and bison 4) install libxml2 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get libxml2-python-2.9.1.win-amd64-py2.7.exe 5) install pywin32 from here: http://www.lfd.uci.edu/~gohlke/pythonlibs get pywin32-218.4.win-amd64-py2.7.exe 6) install git 7) download mesa from git see http://www.mesa3d.org/repository.html 8) 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.