Eric Anholt
1973845fbd
The theory I had when I wrote the code was that you wanted to minimize latency on your queries because the app was going to ask soon. Only, it turns out that everybody batches up their queries and asks for the results later (often after the next SwapBuffers!), so this was a pessimization. Until now, I had no workload where it mattered enough to benchmark. Recently I started playing some Minecraft, which uses tons of queries to decide whether to render chunks of the terrain. For that app, avoiding the flush in the query-generation loop improves performance 22.7% +/- 4.7% (n=3) on an apitrace capture of it (confirmed in game by watching the fps meter found by pressing F3, 15/16 -> 20/21 fps). Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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.