Plamena Manolova
048d4c45c9
This patch modifies the ARB_indirect_parameters logic in brw_draw_prims, so that our implementation isn't affected if another application attempts to use predicates. Previously we were using a predicate with a DELTAS_EQUAL comparison operation and relying on the MI_PREDICATE_DATA register being 0. Our code to initialize MI_PREDICATE_DATA to 0 was incorrect, so we were accidentally using whatever value was written there. Because the kernel does not initialize the MI_PREDICATE_DATA register on hardware context creation, we might inherit the value from whatever context was last running on the GPU (likely another process). The Haswell command parser also does not currently allow us to write the MI_PREDICATE_DATA register. Rather than fixing this and requiring an updated kernel, we switch to a different approach which uses a SRCS_EQUAL predicate that makes no assumptions about the states of any of the predicate registers. Fixes Piglit's spec/arb_indirect_parameters/tf-count-arrays test. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103085 Signed-off-by: Plamena Manolova <plamena.manolova@intel.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 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.