Side note, if camera distance is exposed each frame, why not make that available to the python api? Like object.cameraDistance. ? On Apr 8, 2014 6:09 PM, "Jacob Merrill" <[email protected]> wrote:
> 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
