Lionel Landwerlin
543d5db4e2
Up to now on Gen8+ we only allocated a vertex element for gl_InstanceIndex or gl_VertexIndex when a vertex shader uses gl_BaseInstanceARB or gl_BaseVertexARB. This is because we would configure the VF_SGVS packet to make the VF unit write the gl_InstanceIndex & gl_VertexIndex values right behind the values computed from the vertex buffers. In the next commit we will also write the gl_DrawIDARB value. Our backend expects to pull the gl_DrawIDARB value from the element following the element containing gl_InstanceIndex, gl_VertexIndex, gl_BaseInstanceARB and gl_BaseVertexARB (see vec4_vs_visitor::setup_attributes). Therefore we need to allocate an element for the SGVS elements as long as at least one of the SGVS element is read by the shader. Otherwise our shader will use a gl_DrawIDARB value pulled from the URB one element too far (most likely garbage). v2: Fix my english (Lionel) Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
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.