Tools: Unreal Engine 3D Fluid To Flipbook

Creating Our Material ## Creating Sprite Emitter I always wanted to create blood VFX using alembics but that turned out to be a bit high end effect which can have a huge file size, it still is perfectly fine to use it for high fidelity games, but it obviously doesn't scale well enough. All this time unreal engine had a built-in solution to convert your fluid simulations into flipbooks which you can then use in your particle effects. In this section I will go over how to extract flipbook textures from Grid3D_Gas_ColoredSmoke. Open up this Niagara asset and click on the Baker button In the Bake menu adjust your camera so you have the particle at the center of your screen In the Bake menu adjust your camera so you have the particle at the center of your screen. Set name, frame size is best kept at 128, Use Texture Atlas Size to set the resolution 1K or 2K is best for games, Then Click on the Bake button mentioned with a green arrow. This will generate a texture atlas like this: Now before we start to create our 2D Sprite emitter we first are going to setup the material using the Atlas Set the material blend mode to Translucent, Press T to add a texture sample node, assign the atlas to it. To get rid of the black background we divide RGB with Alpha and plug it into the Emissive Color, The Alpha also goes into Opacity. Using this template create a new Particle system. Once created Add these 2 modules: And to change the size of our sprite do this: That is it, you now have a 2D Flip book version of your 3D fluid simulation. To Have it loop you have to click the Emitter Update Module and Set it to infinite there and loop delay as well. Templates let you quickly answer FAQs or store snippets for re-use. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Hide child comments as well For further actions, you may consider blocking this person and/or reporting abuse - Create a Gas 3D simulation from particle system - Scale Sprite Size (Optional) - Sub UV Animation