Brian Paul
d79595bf02
When long GL_LINE_LOOP primitives don't fit in one vertex buffer they have to be split across buffers. The code to do this was basically correct but drivers had to pay special attention to the _mesa_prim::begin,end flags in order to draw the sections of the line loop properly. Apparently, the only drivers to do this were those using the old 'tnl' module for software vertex processing. Now we convert the split pieces of GL_LINE_LOOP prims into GL_LINE_STRIP primitives so that drivers don't have to worry about the special begin/end flags. The only time a driver will get a GL_LINE_LOOP prim is when the whole thing fits in one vertex buffer. Mostly fixes bug 81174, but not completely. There's another bug somewhere in the src/gallium/auxiliary/draw/ code. If the piglit lineloop test is run with -count 4096, rendering is correct, but with -count 4097 there are stray lines. 4096 is a magic number in the draw code (search for "4096"). Also note that this does not fix long line loops in display lists. The next patch fixes that. v2: fix incorrect -1 in vbo_compute_max_verts(), per Charmaine. Remove incorrect assertion which was added in vbo_copy_vertices(). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81174 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49779 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=28130 Reviewed-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Jose Fonseca <jfonseca@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.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 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.