Basic 3D Programming - Learning LibGDX Game Development - page 396

To convert car.fbx to a .g3db format, open the command line and call
fbx-conv-win32 , as shown in the following screenshot:
Make sure that the fbx-conv-win32.exe file is in the same folder as car.fbx .
Otherwise, you will have to use the full path of the source file to convert.
To find out more about FBX converter visit https://github.com/
libgdx/fbx-conv and https://github.com/libgdx/libgdx/
wiki/3D-animations-and-skinning . Also, you can download FBX
converter from http://libgdx.badlogicgames.com/fbx-conv .
3D frustum culling
In a 3D world, we have a lot of objects everywhere. However, only a small number
of objects will be visible in the scene. Rendering all objects, including those that are
not visible, can be a waste of our processing time and resources and will affect the
speed of the game. Hence, we should only render those objects that are actually
visible to the camera and ignore all other objects that are outside the field of view
of the camera. This is known as frustum culling and there are several ways to
accomplish this.