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For rendering to buffers, we cannot have any y alignment. So make sure that tile clear commands only clear up to the fb width/height, not more (do this for all resources actually as clearing more seems pointless for other resources too). For the jit fs function, skip execution of the lower half of the fragment shader for the 4x4 stamp completely, for depth/stencil only load/store the values from the first row (replace other row with undef). For the blend function, also only load half the values from fs output, replace the rest with undefs so that everything still operates on the full 4x4 block to keep code the same between 4x1 and 4x4 (except for load/store of course which also needs to skip (store) or replace these values with undefs (load))., at the cost of slightly less optimal code being produced in some cases. Also reduce 1d and 1d array alignment too, because they can be handled the same as buffers so don't need to waste memory. v2: don't try to run special blend code for 4x1, (very) slightly less complexity if we just use the same code as for 4x4 which may or may not make it easier to optimize in the future (as we care a lot more about 4x4 performance than 1d). v2: don't use undef values for unused fs src outputs with llvm 3.1 as it apparently can trigger a bug in llvm. Reviewed-by: Jose Fonseca <jfonseca@vmware.com> |
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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.