Paul Berry
88e4bfde26
This patch paves the way for allowing varying structs by generalizing varying_matches::compute_packing_order to handle any type of varying. Previously, we packed in the order (vec4, vec2, float, vec3), with matrices being packed according to the size of their columns. Now, we pack everything according to its number of components mod 4, in the order (0, 2, 1, 3). There is no behavioural change for vectors. Matrices are now packed slightly differently: - mat2x2 gets assigned PACKING_ORDER_VEC4 instead of PACKING_ORDER_VEC2. This is slightly better, because it guarantees that the matrix occupies a single varying slot. - mat2x3 gets assigned PACKING_ORDER_VEC2 instead of PACKING_ORDER_VEC3. This is kind of a wash. Previously, mat2x3 had a 25% chance of having neither of its columns double parked, a 50% chance of having exactly one of its columns double parked, and a 25% chance of having both of its columns double parked. Now it always has exactly one of its columns double parked. - mat3x3 gets assigned PACKING_ORDER_SCALAR instead of PACKING_ORDER_VEC3. This doesn't affect much, since in both cases there is no guarantee of how the matrix will be aligned. - mat4x2 gets assigned PACKING_ORDER_VEC4 instead of PACKING_ORDER_VEC2. This is slightly better for the same reason as in mat2x2. - mat4x3 gets assigned PACKING_ORDER_VEC4 instead of PACKING_ORDER_VEC3. This is slightly better for the same reason as in mat2x2. Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> 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.