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989b5722dc
Previously, on i965 Gen6 and above, we weren't allocating space for gl_ClipVertex in the VUE, since the VS was automatically converting it to clip distances. This prevented transform feedback from being able to capture gl_ClipVertex. This patch goes aheads and allocates space for gl_ClipVertex in the VUE on Gen6 and above. The old behavior is retained on Gen5 and below, since (a) transform feedback is not yet supported on those platforms, and (b) those platforms don't currently support gl_ClipVertex anyhow. Note: this constitutes a slight waste of VUE space for shaders that use gl_ClipVertex and don't use transform feedback to capture it. However, that seems preferable to making the VUE map (and all of the state that depends on it) dependent on transform feedback settings. Fixes Piglit test "EXT_transform_feedback/builtin-varyings gl_ClipVertex". Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> |
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File: docs/README.WIN32 Last updated: 23 April 2011 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. 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.