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.
Flip the texture coordinates instead of flipping textures.
This simplifies the TextureManager (no need to worry if the caller wants flipping or not), should make it easier to generalize & multithread it.
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.
