Kenneth Graunke
494593e6b2
Shaders can use quite a bit of uniform data. Better to put it in the upload buffers, like we do for client vertex data, rather than the batch buffer state area, which is primarly used for indirect state. This should free up batch space, allowing us to emit more commands in a batch before flushing. Because BRW_NEW_BATCH also causes a lot of state to be re-emitted, it may also reduce CPU overhead a little bit. We took this approach on Gen4-5, but switched to using the batch area on Gen6+ because buffer 0 is relative to Dynamic State Base Address by default, which is set to the start of the batch. On Gen9+, we already use a relocation due to a workaround, so this is trivial to change and has basically no downside. Unfortunately we can't change compute shader push constants because MEDIA_CURBE_LOAD always uses an offset from dynamic state base address. Improves performance in GLBenchmark 2.7/TRex Offscreen by: - Skylake GT4e: 0.52821% +/- 0.113402% (n = 190) - Apollolake: 0.510225% +/- 0.273064% (n = 70) Reviewed-by: Chris Forbes <chrisforbes@google.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 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.