Added occlusion culling capability in the BGE.
More info: http://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.49/Game_Engine#BGE_Scenegraph_improvement
MSVC, scons, cmake, Makefile updated.
Other minor performance improvements:
- The rasterizer was computing the openGL model matrix of the objects too many times
- DBVT view frustrum culling was not properly culling behind the near plane:
Large objects behind the camera were sent to the GPU
- Remove all references to mesh split/join feature as it is not yet functional
In a simple test with ~12000 verts, overall BGE startup time went from ~4.5 sec to a bit under a second.
- before adding each vert it did a check for a duplicates.
- Using RAS_Polygon verts can give a lot of duplicates because the verts also store UV's and normals.
- Was increasing the array one item at a time, now resize the array once.
- Use the blender mesh mvert array rather then RAS_TexVert's, so needed to include some DNA headers.
* giving compileflags, cc_compileflags and cxx_compileflags to BlenderLib() now actually overrides any other setting (so there's no unclarity when ie. conflicting options are being specified in REL_CFLAGS et al). These are set after either release or debug flags, but before any *_WARN flags (so those stay maintained).
* add cxx_compileflags for GE parts on win32-vc to have better performance.
* NOTE: if platform maintainers (OSX and Linux) could check and do the same for their systems. Not vital, but probably very, very much welcomed by GE users.
+ 'scons blenderplayer' builds blender AND blenderplayer now (tested on Linux
only, but was only linking issue, so should work on other platforms too).
NOTE: I noticed some compileflags for GE specific libs that were left out -
I re-enabled them in the SConscripts, but I'm going to do a test build my-
self now, so if there are problems with them on win32, I probably already
know about them :)
* This commit is all of the rewrite work done on the SCons system. For
documentation see doc/blender-scons.txt and doc/blender-scons-dev.txt.
Also http://mediawiki.blender.org/index.php/BlenderDev/SconsRefactoring
contains valuable information, along with what still needs to be done.
- linux, os x and windows compile now.
- files are compiled to BF_INSTALLDIR (see config/(platform)-config.py)
- NOTE: Jean-Luc P will commit sometime during the weekend proper
appit() for OS X. For now, copy the resulting binary to an
existing .app bundle.
- features:
- cleaner structure for better maintenance
- cleaner output during compile
- better handling of build options
- general overall speed increase
- see the wiki for more info
Cygwin, FreeBSD and Solaris systems still need work. For these systems:
1) copy a config/(platform)-config.py to ie. config/cygwin-config.py
2) set the proper defaults for your platform
3) mail me at jesterking at letwory dot net with you configuration. if
you need any modifications to the system, do send a patch, too.
I'll be giving first-aid today and tomorrow, after that it'll be all
regular development work :)
/Nathan
using bandoler's patch as a basis (thanks!).
A couple of notes:
- This is for windows only, I did not have a chance to try linux yet.
- SConscript for PHY_Bullet may need tweaking (plus support
for other platforms), but at least it's in there :)
Any problems, shout :)
