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When an applications specifies mip levels _before_ setting a mipmap texture filter, we will initially guess a single texture level. When the second level image is created, we try to allocate the full texture -- however, we get the base level size guess wrong if that size is odd. This leads to yet another re-allocation of the texture later during st_finalize_texture. Even worse, this re-allocation breaks a (reasonable) assumption made by st_generate_mipmaps, because the re-allocation in the finalization call will again allocate a single-level pipe texture (based on the non-mipmap texture filter!). As a result, mipmap generation fails in interesting ways. All of this can be avoided by just using the fact that we already know the size of the base level. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95529 Cc: 12.0 <mesa-stable@lists.freedesktop.org> Reviewed-by: Brian Paul <brianp@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 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.