(Note: I posted this problem in a similar thread under “Particles”, but have got no solution yet.)
Is it possible to limit “Preparing scene data” to what is actually visible in the frame?
I have an animated scene in which the camera moves across a landscape that has grass made of particle hair. Because of the camera movement, only a small fraction of the particles is actually visible in each individual frame.
Nevertheless, in the “Preparing scene data” phase, Blender 2.78 (Internal Renderer) seems to “count” all of the particles in the whole .blend file, which takes an unnecessarily long time.
Is there a function, perhaps an addon, that will “ignore” the particles that are outside the frame?
The grass is not animated. Can Blender somehow save the result of “counting the hairs” and reuse it for all of the other frames?