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Tegra K1 and later use a GPU that can be driven by the Nouveau driver. But the GPU is a pure render node and has no display engine, hence the scanout needs to happen on the Tegra display hardware. The GPU and the display engine each have a separate DRM device node exposed by the kernel. To make the setup appear as a single device, this driver instantiates a Nouveau screen with each instance of a Tegra screen and forwards GPU requests to the Nouveau screen. For purposes of scanout it will import buffers created on the GPU into the display driver. Handles that userspace requests are those of the display driver so that they can be used to create framebuffers. This has been tested with some GBM test programs, as well as kmscube and weston. All of those run without modifications, but I'm sure there is a lot that can be improved. Some fixes contributed by Hector Martin <marcan@marcan.st>. Changes in v2: - duplicate file descriptor in winsys to avoid potential issues - require nouveau when building the tegra driver - check for nouveau driver name on render node - remove unneeded dependency on libdrm_tegra - remove zombie references to libudev - add missing headers to C_SOURCES variable - drop unneeded tegra/ prefix for includes - open device files with O_CLOEXEC - update copyrights Changes in v3: - properly unwrap resources in ->resource_copy_region() - support vertex buffers passed by user pointer - allocate custom stream and const uploader - silence error message on pre-Tegra124 - support X without explicit PRIME Changes in v4: - ship Meson build files in distribution tarball - drop duplicate driver_tegra dependency Reviewed-by: Emil Velikov <emil.velikov@collabora.com> Acked-by: Emil Velikov <emil.velikov@collabora.com> Tested-by: Andre Heider <a.heider@gmail.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Dylan Baker <dylan@pnwbakers.com> Signed-off-by: Thierry Reding <treding@nvidia.com> |
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| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
| Makefile.am | ||
| meson.build | ||
| meson_options.txt | ||
| REVIEWERS | ||
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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 https://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.