mirror of
https://gitlab.freedesktop.org/mesa/mesa.git
synced 2026-05-05 09:38:07 +02:00
read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
36f0f03182
VC4 was running into a major performance regression from enabling control flow in the glmark2 conditionals test, because of short if statements containing an ffract. This pass seems like it was was trying to ensure that we only flattened IFs that should be entirely a win by guaranteeing that there would be fewer bcsels than there were MOVs otherwise. However, if the number of ALU ops is small, we can avoid the overhead of branching (which itself costs cycles) and still get a win, even if it means moving real instructions out of the THEN/ELSE blocks. For now, just turn on aggressive flattening on vc4. i965 will need some tuning to avoid regressions. It does looks like this may be useful to replace freedreno code. Improves glmark2 -b conditionals:fragment-steps=5:vertex-steps=0 from 47 fps to 95 fps on vc4. vc4 shader-db: total instructions in shared programs: 101282 -> 99543 (-1.72%) instructions in affected programs: 17365 -> 15626 (-10.01%) total uniforms in shared programs: 31295 -> 31172 (-0.39%) uniforms in affected programs: 3580 -> 3457 (-3.44%) total estimated cycles in shared programs: 225182 -> 223746 (-0.64%) estimated cycles in affected programs: 26085 -> 24649 (-5.51%) v2: Update shader-db output. Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> (v1) |
||
|---|---|---|
| bin | ||
| docs | ||
| doxygen | ||
| include | ||
| m4 | ||
| scons | ||
| scripts | ||
| src | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .travis.yml | ||
| Android.common.mk | ||
| Android.mk | ||
| appveyor.yml | ||
| autogen.sh | ||
| CleanSpec.mk | ||
| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
| Makefile.am | ||
| REVIEWERS | ||
| SConstruct | ||
| VERSION | ||
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.