Random flickering screen on Firefox / Windows

Questions
1

Hello,
From time to time, I am getting flickering screen as in the attached video

So far I have seen this issue only in Firefox.
My scene is pretty simple, it contains

  • background dome
  • video texture
  • ui button (but I am getting flickering when there is no button)

Note

  • there is no error on console
  • flickering happens when console is not open also
  • the video texture covers only small portion of the screen while the whole screen becomes black
    image
    image1876Ă—738 80.3 KB

let me know how this issue can be addressed
thank you,

2

I wonder if it could be a driver issue :frowning: could you try to create a mozilla bug to be sure they have a look ?

3

yes, I will submit a mozilla bug.
Meanwhile I noticed that if I do not use my shader to remove the greenscreen, I do not see flickering so far…

Here is a link to playground where I am using the same shader as in the original post
(I convert the input rgb to hsv and check if I am within tolerance from the chroma)

I am wondering if I am doing something “illegal” in the fragment shader.
I remember long time ago, I ran into a problems in Maya’s custom shader when I introduced too many variables in it. Maybe there are similar limitations in shaders here too?

4

not seeing anything there :frowning:

5

I am getting more inclined to say that it is a mozilla bug. First of all, so far I have seen this only in Firefox. Besides that, I can “fix” by closing / opening developers’ console panel (pressing F12)

2 Likes
6

Similar thing happening to me only on Firefox. If you have a canvas open, go to a different tab for a while, when you come back the canvas will flicker until a resize happens (dev tool opening/ closing triggers the resize). This is not only happening with Babylon but with other apps that render to the canvas as well.