Ben Widawsky
b069f9eafd
Certain platforms support the ability to sample from a texture, and write it out
to the file RT - thus saving a costly send instructions (note that this is a
potnential win if one wanted to backport to a tag that didn't have the patch
from Topi which removed excess MOVs from LOAD_PAYLOAD - 97caf5fa04),
v2: Modify the algorithm. Instead of iterating in reverse through blocks and
insts, since the last block/inst is the only thing which can benefit. Rebased
on top of Ken's patching modifying is_last_send
v3: Rebased over almost 2 months, and Incorporated feedback from Matt:
Some comment typo fixes and rewordings.
Whitespace
Move the optimization pass outside of the optimize loop
v4: Some cosmetic changes requested from Ken. These changes ensured that the
optimization function always returned true when an optimization occurred, and
false when one did not. This behavior did not exist with the original patch. As
a result, having the separate helper function which Matt did not like no longer
made sense, and so now I believe everyone should be happy.
Benchmark (n=20) %diff
*OglBatch5 -1.4
*OglBatch7 -1.79
OglFillTexMulti 5.57
OglFillTexSingle 1.16
OglShMapPcf 0.05
OglTexFilterAniso 3.01
OglTexFilterTri 1.94
No piglit regressions:
(http://otc-gfxtest-01.jf.intel.com:8080/view/dev/job/bwidawsk/112/)
[*] I believe my measurements are incorrect for Batch5-7. If I add this new
optimization, but never emit the new instruction I see similar results.
v5: Remove declaration of combine_tex_header since v4 dropped that function
(Ben)
Remove check for impossible case of an empty block (Matt)
Set dest earlier to avoid extra special-casing in generate_tex (Matt)
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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.