📥Click Here to Download on the Unity Asset Store!* 📥
*assets in video & listed below in Credits have been replaced by bespoke assets in package
What is this?
This is a bubbling cauldron potion made in Unity with a mix of shader graph and particle effects. Made as part of Harry Alisavakis‘s Potions/Alchemy challenge on his discord. Since I’ve already done a potion in a glass bottle style shader effect here my mind went to a classic witch’s cauldron. The liquid surface (a high poly plane) combines a ripple shader effect I re-used, a render texture based planar reflection effect, some procedural noise texture scrolling and vertex displacement. The bubbles are driven by the particle system with a stepped fresnel for the rim and swirl effect with more noise textures for the surface. A custom vertex stream on the particle system makes the pop effect play out over the particle’s lifetime with a noise texture applied to the alpha. The cauldron features a toon lit specular shader to provide some glow lighting based on scene depth and some shadow contouring. The fire is a shader placed on a sphere mesh made with stepped noise texture, alpha masked on the Y axis with some distortion added with an animated normal map.
Some light bloom and vignette post-processing added.
- ripple shader
- planar reflections
- vertex displacement
- toon lit specular shader
- procedural noise fire shader
- animated UV offsetting
- post-processing effects
Bubble breakdown from Cyan – https://twitter.com/Cyanilux/status/1088769521945587713
Toon lit specular shader tutorial from MinionsArt – https://www.youtube.com/watch?v=B975bBfHTTg
Fire shader breakdown from MinionsArt – https://www.patreon.com/posts/17021975
Cauldron model by ValSam – https://www.turbosquid.com/3d-models/metallic-cauldron-3d-model-1266200
Camp Fire model by Faith Orhan – https://www.turbosquid.com/3d-models/camp-fire-model-1722247
Stone staircase model by Marc7260 – https://www.turbosquid.com/3d-models/free-max-mode-building-entrance/672046
Columns, torches and chain models by pacamera – https://www.turbosquid.com/3d-models/medieval-dungeon-pack-c4d-free/850323
Door model by creaker99 – https://www.turbosquid.com/3d-models/medieval-door-3d-model-1207184
Brick texture from textures.com – https://www.textures.com/download/PBR0073/133108
Stone texture from textures.com – https://www.textures.com/download/PBR0908/139946
Ambient SFX by billy_magnum – https://freesound.org/people/billy_magnum/sounds/23163/
Bubbling SFX by jasonmchl – https://freesound.org/people/jasonmchl/sounds/55246/