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Once blorp gains the ability to do format conversions, it's conceivable that the source format may be texturable but not supported as a render target. This would break Paul's code, which assumes that it can use the render_target_format array even for the source format. There are three ways to convert MESA_FORMAT enums to BRW_SURFACEFORMAT enums: 1. brw_format_for_mesa_format() This translates the Mesa format to the most equivalent BRW format. 2. brw->render_target_format[] This is used for renderbuffers, and handles the subset of formats that are renderable. However, it's not always equivalent, since it overrides a few non-renderable formats. For example, it converts B8G8R8X8_UNORM to B8G8R8A8_UNORM so it can be rendered to. 3. translate_tex_format() This is used for textures. It wraps brw_format_for_mesa_format(), but overrides depth textures, and one sRGB case on Gen4. BLORP has a fourth function, which uses brw->render_target_format[] and overrides depth formats (differently than translate_tex_format). This patch makes the BLORP function to use brw_format_for_mesa_format() for textures/source data, since not everything will be a render target. It continues using brw->render_target_format[] for render targets, since it needs the format overrides that provides. We don't use translate_tex_format() since the additional overrides are not useful or simply redundant. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> Reviewed-by: Chad Versace <chad.versace@linux.intel.com> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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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.