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These fields control how many entries the hardware prefetches into the state cache, so they only impact performance, not correctness. However, it's not clear how to use this in a way that's beneficial. According to the documentation, kernels "using a large number" of entries may wish to program this to zero to avoid thrashing the cache; it's unclear how many is too many. Also, Ironlake's WM was missing this feature entirely---the count had to be zero. The dirty bit tracking to handle this complicates the surface state and binding table setup; removing it should simplify things and make future refactoring easier. So just set 0 for the number of entries rather than trying to compute and track it. Appears to have no impact on Nexuiz and OpenArena on Sandybridge. Signed-off-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Paul Berry <stereotype441@gmail.com>
File: docs/README.WIN32 Last updated: 23 April 2011 Quick Start ----- ----- Windows drivers are build with SCons. Makefiles or Visual Studio projects are no longer shipped or supported. Run scons osmesa mesagdi to build classic mesa Windows GDI drivers; or 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. 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.