What about collecting a list of all objects with LOD settings when p is pressed, and then using the cameras view area to filter further? Also same for speakers? Only loop through objects that are on a list? On Apr 8, 2014 6:02 PM, "Campbell Barton" <[email protected]> wrote:
> Hi, recently I noticed that Blender is slower then it was back in 2.4x > days when it comes to many objects (just empties). > > I recall having 80'000 objects in a scene, while it was very slow to > duplicate, Blender was usable apart from that. > > > Two recent examples: > > --- > On a test with ~20,000 objects I found blender was continuesly looping > over all scenes (and set scenes recursively), to check if any of the > objects were speakers, to update their sound time. > Even when there were no speakers in the blend file. (Now theres a > quick check to avoid this in `sound_update_scene`) > > --- > Today I just stubmed upon `BKE_object_lod_update` being called on > every redraw for every 3DView for every object, in every set-scene > recursively and every dupli. Incase the game engine is enabled and > LOD's are used. > > This stuff should really come up in code-review, > (I can take some blame for not reviewing the patch in this case...) > > While I'm sure its not the main bottleneck in blenders viewport speed, > its just sloppy and can be easily avoided (skip the loop if the > game-engine is disabled for example, and only operate on objects which > are visible!). > > Sometimes bad hacks are hard to avoid, in those cases at least add a > comment that the code is inefficient with some explanation why a > better method can't be used. > > > For now I'll ifdef out this code when the game engine is disabled, but > really I think we should be a bit better picking up on this stuff > especially when it effects all users. > > -- > - Campbell > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers > _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
