Hi,
I am working on a scene where I have a particle system that forms gradually. There is a barrel in the scene that progressively dissolves, and a foam-like substance takes its place before melting down. The barrel animation is driven by a pyro source spread, that in conjunction with an Axiom solver, also drives the velocity of the POP simulation. The simulation works fine. However, in rendering (with Arnold), I have many tiny particles under the intended particles that reflect the light source while flickering, and these are not present on every frame. This flicker only appears in the render. I cannot see anything between the "real" particles and the box object below in the viewport. I am attaching the first few frames + an annotated frame. Any idea what is causing my issue? Thanks
Houdini + Arnold flickering particles only visible in render
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- mzo
- Member
- 20 posts
- Joined: 3月 2015
- Offline
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- mzo
- Member
- 20 posts
- Joined: 3月 2015
- Offline
UPDATE: I found the solution and I thought to share it in case anybody else had this problem. The issue was in the Points from Volume node that I used to generate the points to feed to the POP solver. Changing the construction method from Sparse Volume to Dense Grid removed those leaking extra points that created the flicker.
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