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GPU particle distance field collision bounce not working

The distance field collision for GPU particles doesn't work at all since no collision response option seems to do anything (Kill, Stop, Bounce).

Reproduction steps:

  1. create new project with Starter Content

  2. Modify the "P_Explosion" particle system from the Starter Content

  3. "sparks" emitter -> Collision (Scene Depth) -> Collision -> Collision Mode: Distance Field cascade-setup

  4. project setting -> search: "distance field" -> check "Generate Mesh Distance Fields" -> Restart project to take effect project-settings

  5. place modified particle system above static mesh with created distance field to see that there is no effect. (the shadow is due to a "garage" made out of box brushes -> no distance fields)

distance-field-visualization collision-error

The intention is to create particles even if the emitter is hidden behind the player or a static mesh from the cameras POV, preferably with GPU particles.

Product Version: UE 4.18
cascade-setup.jpg (438.5 kB)
coll-err.jpg (22.0 kB)
dist-field-vis.jpg (92.3 kB)
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asked Nov 22 '17 at 06:57 PM in Rendering

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Malius Arth
1 2

avatar image AzzaMatta2571 Jan 02 '18 at 01:08 AM

bump, same issue

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