Jordan Justen
112a2ba276
For gen9+ this will indicate when we should allow hiz based sampling
during rendering.
Improves performance in :
- Synmark's OglDeferred by 2.2% (n=20)
- Synmark's OglShMapPcf by 0.44% (n=20)
v2 by Ben: Add spec reference, and make it fix with some of the changes made on
the previous patches
Change the check from mt->aux_buf to mt->num_samples. The presence of an aux_buf
isn't enough to determine there isn't a HiZ buffer to use.
v3: It seems all depth surface end up with num_samples = 0 by default,
so allow sampling from depth HiZ if num_samples <= 1. (Lionel)
Allow sampling from HiZ only if all LOD are available from the HiZ
buffer. (Lionel)
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> (v1)
Signed-off-by: Ben Widawsky <benjamin.widawsky@intel.com> (v2)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> (v3)
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.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 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.