Roland Scheidegger
76baf99737
Juniper really has a maximum of 4 RBEs (16 pixels). However, predication always locks up on my HD 5750, and through experiments it looks like if we're pretending it has a maximum of 8, with 4 disabled, it works correctly. My conclusion would be that there's a bug (likely firmware, not hw) which causes the predication logic to try to read 8 results out of the query buffer instead of just 4, and since of course noone ever writes the upper 4, the status bit is never set and hence it will wait for it forever. Ideally this would be fixed in firmware, but I'd guess chances of that happening are slim. This will double the size of (occlusion) query result buffers, write the status bit for the disabled rbs in these buffers, and will also add 8 results together instead of just 4 when reading them back. The latter is unnecessary, but it's probably not worth bothering - luckily num_render_backends isn't used outside of occlusion queries, so don't need separate value for the "real" maximum. Also print out the enabled_rb_mask if it changed from the pre-fixed value (which is already printed out), just in case there's some more problems with chips which have some rbs disabled... This fixes all the lockups with piglit nv_conditional_render tests on my HD 5750 (all pass). Reviewed-by: Dave Airlie <airlied@redhat.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.