Requires Unity 5.4.5 or higher.
A particle system of thunderbolt.
☆Randomly thunderbolt strike.
☆Particle expanded in Geometry Shader for reducing CPU overhead.
☆Skybox lighting support. Thunderbolt can interact with skybox.
★Need artist to provide thunderbolt texture (and thunder bolt should be at center of texture, see the sample.)
★Need artist to make a sky normal cube. And normal value should be designed based on a fixed light direction of thunderbolt.
★Need shader model 4.0 or higher due to Geometry Shader.
