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Previously, the code for setting this flag for GLSL programs was duplicated in three places: brw_link_shader(), glsl_to_tgsi_visitor, and ir_to_mesa_visitor. In addition to the unnecessary duplication, there was a performance problem on i965: brw_link_shader() set the flag before doing its final round of optimizations, which meant that if the optimizations managed to eliminate all the discard operations, the flag would still be set, resulting (at least in theory) in slower performance. This patch consolidates all of the code that sets UsesKill for GLSL programs into do_set_program_inouts(), which already is doing a similar job for UsesDFdy, and which occurs after i965's final round of optimizations. Non-GLSL programs (ARB programs and the state tracker's glBitmap program) are unaffected. Reviewed-by: Eric Anholt <eric@anholt.net>
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.