Kenneth Graunke
9f330481c3
While looking through the documentation, I found this in the Sandybridge PRM (Volume 4, Part 1, Page 140): "Use of sample_c with SURFTYPE_CUBE surfaces is undefined with the following surface formats: I24X8_UNORM, L24X8_UNORM, A24X8_UNORM, I32_FLOAT, L32_FLOAT, A32_FLOAT." I haven't observed this to be true, but it suggests that we may want to use other formats. We already perform DEPTH_TEXTURE_MODE swizzling in the shaders, and don't rely on the surface format to splat things appropriately. So using RED should work just as well as INTENSITY. A few notes about the formats: - R24_UNORM_X8_TYPELESS has the exact same properties as I24X8_UNORM. - R16_UNORM and R32_FLOAT are additionally supported as a render target, while the old I16_UNORM/I32_FLOAT formats are not. - R32_FLOAT_X8X24_TYPELESS is not supported as a render target, while the old format (R32G32_FLOAT) was. However, it shares the same properties as the formats we use for Z24, so it should suffice. This makes translate_tex_format and brw_blorp_surface_info::set a bit more similar. No Piglit changes on Sandybridge or Ivybridge. No oglconform changes on Sandybridge. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Ian Romanick <ian.d.romanick@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. 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.