Roland Scheidegger
587bd16d0d
The border clamping code is unnecessary, since we don't care if a wrapped coord value is -1 or <-1 (same for length vs. >length), in either case the border handling code will mask out the offset and replace the texel value with the border color. Note that technically this is not entirely correct. Omitting clamping on the float coords means that flt->int conversion may result in undefined values for values of very large magnitude. However there's no reason we should honor this here since: a) we don't care for that for ordinary wrap modes in the aos code when converting coords and the problem is worse there (as we've got only effectively 24 instead of 32bits) b) at least in some cases the clamping was done already in int space hence doing nothing to fix that problem. c) with sse2 flt->int conversion with such values results in 0x80000000 which is just perfect (for clamp to border - not so much for the ordinary clamp to edge). Reviewed-by: Brian Paul <brianp@vmware.com>
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.