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There are currently a bunch of formats that behave strangely when
sampling the cleared color from the MCS buffer on SKL. They seem to
mostly be formats that don't have an alpha component, although it's
not all of them, and we haven't yet found anything in the specs which
would explain this. For now to be on the safe side this patch just
prevents fast clears for MSRTs on SKL altogether so that when fast
clears are eventually enabled it will only be for single-sampled
surfaces. The assumption is that clears are probably more likely to be
used in single-sampled applications anyway so we can at least get them
working and we can enable MSRTs later once we understand the problem
better.
This patch should have no functional effect other than perhaps
receiving fewer perf_debug messages on SKL+.
v2: Improve the commit message to avoid saying the patch disables fast
clears because it will be merged before fast clears are enabled
for any surfaces so it doesn't actually disable anything.
Reviewed-by: Ben Widawsky <benjamin.widawsky@intel.com>
Reviewed-by: Chad Versace <chad.versace@intel.com>
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| .gitignore | ||
| Android.common.mk | ||
| Android.mk | ||
| autogen.sh | ||
| CleanSpec.mk | ||
| common.py | ||
| configure.ac | ||
| install-gallium-links.mk | ||
| install-lib-links.mk | ||
| Makefile.am | ||
| 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.