How do you setup reflections of particles?
A while back I noticed that particles were not showing up on my reflections. Recently, I've been doing a lot of tests with them. and decided to try it again, but they don't seem to be working.
Whats the proper way to setup a reflective surface to also capture particles?
asked Nov 07 '14 at 09:02 PM in Rendering
Hey xdbxdbx -
The only way dynamic objects such as particles will show up in reflections is when using the Screen Space Reflections through a Post Process or Camera setting. I would recommend adding a Unbound Post Process volume to your level and in the details check ScreenSpaceReflections >> Intensity to above 50 % and >> Quality to 100 % (these settings can be adjusted as desired, just a good starting point). Within the Screen Space Reflections reange you should now see your particles reflected.
There are some cavets that I would like to point out with reflections that will come into play here. For Translucent Materials used in a Particle make sure that responsive AA is checked true. The AA settings can be adjusted but I find changing it from Temporal AA does not help the blurring of reflections on a flat surface which is in fact a known limitation of reflections in the engine currently, https://docs.unrealengine.com/latest/INT/Resources/Showcases/Reflections/index.html :
Particles systems that already have a nature blur to them (like clouds, smoke, etc.) tend to look better in a true flat reflection surface while opaque or mesh related particles tend to be more blurry.
I will leave you with these two examples of a soft particle system and an opaque particle system on a flat mirrored surface and a surface with roughness (ie a Normal map applied)
If you have further questions please feel free to ask -
answered Nov 12 '14 at 04:34 PM
Lovecraft_K ♦♦ STAFF
I just had the darnedest time getting this to work. Helpful note, particle reflections only work with Temporal AA. Hope this helps someone!
answered Jul 19 '17 at 01:22 AM
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