A falling water is characterized by the appearance of water fragmentation and splash. The sub-particle-scale (SPS) texture model to give a sub-particle-scale texture to the solution of the particle method, which is superior in expression of water fragmentation, is proposed, for a production of physical CG. The particle method is applied as the physical model in the particle scale; while, the random-walk particle-tracking model is applied to the diffusion of mist which is a sub-particle-scale physical process. Processes to produce the CG, which expressed both of a texture of large-scale jet breakup in a particle scale and a texture of mist in a sub-particle scale, by the ray tracing are explained in detail.