Bring a city scene to life with these 2 New York style steaming manhole covers. With 6 high quality VDB caches simulated in Houdini.
Demo Video: https://youtu.be/plmCANKahCw
Help Documentation: https://docs.google.com/document/d/e/2PACX-1vRvohEOLPTJRWUea9-pyRpH7c3CSqC_jzmOJxbj8eu2YfgVyE2Ui1pYrxrlwPn5wtpxvxvBtsz4U7Ys/pub
Each manhole asset is packaged into a blueprint with a choice of 3 individual VDB 300 frame 24 fps looping caches.
Set the visibility for each VDB to swap the caches.
Steam A is slow and drifting, Steam B has faster velocity, Steam C is blown by the wind.
Demo level included.
3 PBR materials with 4K textures.
2 static meshes:
tris: 9,476
verts: 23,406
6 VDBs:
manhole_01_steam_A: 934MB
manhole_01_steam_B: 820MB
manhole_01_steam_C: 736MB
manhole_02_steam_A:823MB
manhole_02_steam_A:817MB
manhole_02_steam_A:883MB
3 materials for the 2 manhole static meshes
6 materials for the VDB caches (SVT in Unreal)
Cinematic Rendering
For Cinematic Rendering, on the Heterogeneous Actors turn "Issue Blocking Requests" to on, and Under Lighting change "Lighting Downsample Factor" to 1.
and use:
r.HeterogeneousVolumes.OrthoGrid 1
r.HeterogeneousVolumes.OrthoGrid.MaxBottomLevelMemoryInMegabytes 512 (default 128)
r.HeterogeneousVolumes.OrthoGrid.ShadingRate 1 (default 4)
Path Tracer
To render heterogeneous volumes with the path tracer, enable the following:
Project Settings
Set the Default RHI to DirectX 12.
Enable Support Hardware Ray Tracing.
Enable Path Tracing
and use the console variable:
r.PathTracing.HeterogeneousVolumes 1