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Before, st_get_texture_sampler_view_from_stobj() did a lot of work to check if the texture parameters matched the sampler view (format, swizzle, min/max lod, first/last layer, etc). We did this every time we validated the texture state. Now, we use a ctx->Driver.TexParameter() callback and a couple other checks to proactively release texture views when we know that view-related parameters have changed. Then, the validation step is simplified: - Search the texture's list of sampler views (just match the context). - If found, we're done. - Else, create a new sampler view. There will never be old, out-of-date sampler views attached to texture objects that we have to test. Most apps create textures and set the texture parameters once. This make sampler view validation much cheaper for that case. Note that the old texture/sampler comparison code has been converted into a set of assertions to verify that the sampler view is in fact consistent with the texture parameters. This should help to spot any potential regressions. Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Reviewed-by: Marek Olšák <marek.olsak@amd.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.