This is a pseudo-fluid dissolve effect.
With the power of Grid2D Collection in Niagara, I fake a fluid simulation of the character color from Scene Color in G-buffer.
Since the pseudo-fluid is processed in 2D, it’s relatively lightweight and ready for game effects.
I also implement a technique that uses a dot product to control the dissolve direction with just one parameter.
The tutorial of this effect is here:
日本語 -> https://coloso.jp/products/vfxartist-heyyo-jp
English -> https://coloso.global/products/vfxartist-heyyo-us