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Added intel_readpixels_tiled_mempcpy and intel_gettexsubimage_tiled_mempcpy functions. These are the fast paths for glReadPixels and glGetTexImage. On chrome, using the RoboHornet 2D Canvas toDataURL test, this patch cuts amount of time spent in glReadPixels by more than half and reduces the time of the entire test by 10%. v2: Jason Ekstrand <jason.ekstrand@intel.com> - Refactor to make the functions look more like the old intel_tex_subimage_tiled_memcpy - Don't export the readpixels_tiled_memcpy function - Fix some pointer arithmatic bugs in partial image downloads (using ReadPixels with a non-zero x or y offset) - Fix a bug when ReadPixels is performed on an FBO wrapping a texture miplevel other than zero. v3: Jason Ekstrand <jason.ekstrand@intel.com> - Better documentation fot the *_tiled_memcpy functions - Add target restrictions for renderbuffers wrapping textures v4: Jason Ekstrand <jason.ekstrand@intel.com> - Only check the return value of brw_bo_map for error and not bo->virtual v5: Jason Ekstrand <jason.ekstrand@intel.com> - Don't unnecessarily repeat a comment Signed-off-by: Jason Ekstrand <jason.ekstrand@intel.com> Reviewed-by: Chad Versace <chad.versace@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 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. - 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.