unity3D云彩资源包3DCloudModels（unity2017.4版本可能无法使用）Features:*15lowpolygonmodels:Duplicate,move,rotate,andscalethecloudsinyourscenetocreateepicskiesandartisticdirection.*3customshaders:Hard-edgedAlphaBlend,Soft-edgedAlphaBlend,andAlphaClip.TheseshadersusejusttheRGBchannelsofthetexturean