f40908f2d1
In 74e39de932 it was set to 3 and it was reported that 4 caused
tesseract to start spilling VGPRs. This no longer seems to be the
case.
Totals:
SGPRS: 2787844 -> 2787764 (-0.00 %)
VGPRS: 1713121 -> 1712717 (-0.02 %)
Spilled SGPRs: 7532 -> 7532 (0.00 %)
Spilled VGPRs: 49 -> 33 (-32.65 %)
Private memory VGPRs: 2060 -> 2060 (0.00 %)
Scratch size: 2200 -> 2180 (-0.91 %) dwords per thread
Code Size: 79265520 -> 79248360 (-0.02 %) bytes
LDS: 436 -> 436 (0.00 %) blocks
Max Waves: 670535 -> 670608 (0.01 %)
Wait states: 0 -> 0 (0.00 %)
Before:
VGPR SPILLING APPS Shaders SpillVGPR PrivVGPR ScratchSize
EffectsCaveDemo 301 0 256 264
ReflectionsSubwayDemo 264 0 256 264
VehicleGame 295 0 128 132
bioshock-infinite 1140 0 448 516
dirt-showdown 453 33 0 28
gang-beasts 364 0 500 496
kerbal-space-program 1228 0 472 480
tomb-raider-ultra 1199 16 0 20
After:
VGPR SPILLING APPS Shaders SpillVGPR PrivVGPR ScratchSize
EffectsCaveDemo 301 0 256 264
ReflectionsSubwayDemo 264 0 256 264
VehicleGame 295 0 128 132
bioshock-infinite 1140 0 448 516
dirt-showdown 453 33 0 28
gang-beasts 364 0 500 496
kerbal-space-program 1228 0 472 480
The only change in VGPR spills is the elimination of all spills
in Tomb Raider at Ultra settings. Closer examination shows that
the shaders go over the limit because they contain three
expressions a mul, rcp and ubo load. The ubo load is actually
used elsewhere and is therefore stored in a temp already in IR
such as tgsi but glsl ir counts it agaist the if cost.
Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Acked-by: Marek Olšák <marek.olsak@amd.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.