Wesly is dreaming.

This image is rendered by PRman. The shader of cloud is the default somke shader in RAT. The particle animation was baked as disk caches. Because the mountains and trees don't move, I exported them to a RIB archive and used them as instancing object. This made the final Maya binary file to keep a small size.

This image was generated with three different images. Because I couldn't use Maya paint effects with MtoR, I rendered the paint effect plants by Maya software renderer separately. The ripples on the ground were modified from water drop paint effect. The rain drops is hardware rendered particles. Thanks my friend, Sung-man Pyun, for reminding me the default "particle collision event" function in Maya dynamic. When I made the dynamic rain, I also converted some of the paint effects plants into nurbs or polygon models for simulation.