Since commit e8662bea3133ba9dbb09b86c3abb1af39425e90d, we're using OSG functionality that contains an unfixed crash bug in version 3.2. The bug is fixed in version 3.4 (OSG commit 6351e5020371b0b72b300088a5c6772f58379b84)
Instead use getImage and let the caller create the Texture. Sharing of textures is then handled in post by the SharedStateManager.
This is closer to what the OSG serializer does.
Streamlines the TextureManager and will make it easier to multithread.
Practical benefits:
- Filter settings are now applied to native OSG format models. These models do not use TextureManager::getTexture2D since the model itself specifies a Texture.
- The GUI render manager will be able to use its own separate textures, making it easier to turn off filtering for them.
Cache the current position in the animation track and attempt to reuse it in the next frame.
Decent speed up for the Update phase, about 0.3 ms faster in Balmora.
Unlike what I expected, the osgUtil::UpdateVisitor is set to traverse all children (not only active children). The FrameSwitch was thus traversing both RigGeometries part of the double-buffering scheme, rather than only the one active in the current frame.
Seems wrong to me, but MW appears to do it that way. Without this fix, the light_de_candle_08_64 from http://www.nexusmods.com/morrowind/mods/41654/ has flame particles in the wrong spot.
OSG 3.4 adds the ability to place Drawables directly in the scene graph, without a Geode decorating them. Leveraging this should give a small performance boost, because the redundant Geodes increase culling overhead.
There is still an oustanding issue with the RemoveDrawableVisitor no longer working correctly, because Drawables can have multiple parents.
