[Houdini]Vertex Animation Textures Notes
keywords: Houdini, Vertex Animation Textures
Vertex Animation Textures for Crowds
Unreal material editor cache issue
If duplicate a material that contains vertex animation and change the texture parameters, you need to restart Unreal editor to refresh the vertex animation, otherwise there’re some issues on playing animation.
Rigid-Body Dynamics (Rigid) mode expects the point attributes “pivot” and “orient”
Error on rendering:
Error: Rigid-Body Dynamics (Rigid) mode expects the point attributes "pivot" and "orient" on packed points but at least one of them is not found on the input geometry..
Transfer Attributes as
orient pivot in
Output panel if using
RBD Bullet Solver.
Can’t play vertex animation when baking with a large velocity.
If baking vertex animation texture with a large velocity: vertex animation may not work in Unreal Engine, this may be an issue of Houdini.
Bake animation twice: one with low velocity, another one with high velocity. Then import the FBX of low velocity and the textures (position, rotation) of high velocity into engine.
VAT baking output invalid textures and geometry
DOP Network under Geometry node.
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