[Solved] [HDRP] Random black flickering | 2018.2.1

Unity Engine
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1

Hey there,

I sincerely hope, this has not been posted yet, but at least I was unable to find anything similiar.
We are currently working with HDRP and everything went fine so far. Expected behaviour.
There is just 1 strange issue we are facing.

Sometimes the screen (or some materials) flicker black. Randomly. Just a millisec. Not view angle dependent. We also deactivated all PostFX. No changes. Tried different shaders. No changes.

Does anyone have any clue, where this is coming from?

Any help is greatly appreciated.

2

try to off some features from HDRenderPipeline settings at Light Loop Settings

3

Hey peter,

thanks for your hint. Could you also tell me where to find those settings?
Seems like I am unable to locate them. Nothing in SRP Debug window at least.

Thanks again!

Oh nevermind. I found it :smile: Going to investigate on this

4

Well nothing. All enabled, All disabled. No difference :frowning:

5

Tried to off all features available. No difference.
But it has to do something with the lights. If I disable Lightin in SceneView everything’s fine.

6

Well it’s strange sometimes… Just opened this thread after 2 days of searching and 30minutes later got the solution.

Disabling the contact shadows of our Main Directional Light helped :slight_smile:

7

Yeah it’s all WIP so you’ll get this sort of problem…

8

Unfortunately I have the same problem and this didn’t fix the problem :frowning: Anyone who knows the solution?

9

i’ve got the same problem… flickering randomly even in the scene. annoying.

10

Also have this problem HDRP Unity 2019.30f3. Scene flickers to total black seemingly randomly

11

I’ve had this problem. For me it was one specific model that caused the flickering after a Unity and HDRP upgrade. No guarantees it will solve it for you, It but it might be worth checking by disabling objects to see if you can identify which object could be causing this. When I found the object that caused it for me, reimporting the model was enough to fix it.

12

Its still exists in 2019.3.0f6 with HDRP 7.1.8. I got black frames.

13

I was getting lots of black frames and found out some causes.

  • Cause 1: objects with scale 0. If an object has any of its scales set to 0, it’s quite probable that the screen will flicker in black when it is being rendered.

  • Cause 2: certain normal maps. Some normal maps that I downloaded from the internets where causing this flicker. Quite interestingly, it also depended on the scale! The same model, at scale 1, had no errors. For reasons, I use the model at scale 0.064, which caused tremendous flickering.

  • Cause 3: certain normal maps + distortion. At scale 1, this does not cause flickers, but black squares, being it angle dependent. At scale 0.064, the flicker covers the whole screen.

We’ve solved each case differently:

  • Cause 1: avoid objects getting scale 0.
  • Cause 2: using a different normal map.
  • Cause 3: not using distortion - for now.

Hope it helps.

14

We have problems with flashing black polygons when they are duplicate. We check the geometry for duplicate polygons (especially CAD data (especially CATIA)).

15

Why this thread mark as solved? It not solved at all! In my case black squares or flickering caused by planar reflection. No workaround, only disable it.

16

Just noticed the same problem. I have a Radeon Pro Vega on a bootcamped Mac. What card do you have? Maybe its a driver issue…

17

iSpiegelball I hardly doubt it. I have gtx-1650 and Windows 7

18

this bug is still exists in 2019.3.4f1 with hdrp on all hardware

19

I solved the problem for myself by disabling the static batching that was enabled on some objects.

20

I can confirm this as well. I have to say that this is really annoying.