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For gen6 geometry shaders we use the first BRW_MAX_SOL_BINDINGS entries of the binding table for transform feedback surfaces. However, vec4_visitor will setup the binding table so that textures use the same space in the binding table. This is done when calling assign_common_binding_table_offsets(0) as part if its run() method. To fix this clash we add a virtual method to the vec4_visitor hierarchy to assign the binding table offsets, so that we can change this behavior specifically for gen6 geometry shaders by mapping textures right after the first BRW_MAX_SOL_BINDINGS entries. Also, when there is no user-provided geometry shader, we only need to upload the binding table if we have transform feedback, however, in the case of a user-provided geometry shader, we can't only look into transform feedback to make that decision. This fixes multiple piglit tests for textureSize() and texelFetch() when these functions are called from a geometry shader in gen6, like these: bin/textureSize gs sampler2D -fbo -auto bin/texelFetch gs usampler2D -fbo -auto Acked-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> |
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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 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. 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.