Shadows shifting/glitching with fov change

Bug Reports Engine Bugs
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1

Device information:
Phone - Galaxy S20 FE
Pc - AMD Ryzen 5 5600G @ 3.9 GHz, 32 GB, NVIDIA GeForce RTX 3060

Issue:
My game zooms in and out using the camera’s fov (eases with a lerping function), and when zooming out, the shadows seem to glitch for a second. For both in and out zooming, shadows seem to shift a bit.
I’ve tried on both pc and mobile, and it seems to only majorly happen on mobile.
On pc, the edges of shadows twitch a little, but that is fine and I believe is normal.

Camera setup:

  • Camera is sort of far from focus (offset of 80, 80, -80) with low field of view for an orthographic kind of effect
    ↳ Seems to not have these glitches with high fov & low distance rather than low fov & high distance, but that doesn’t fit my game’s style
  • Camera focus is set to the location without offset (where the camera is looking at)
  • Zooms in and out by lerping fov

Video & demo place:
(demo place doesn’t have as dramatic of an effect; I couldn’t get it very accurate to real place)


Shadow glitch demo place.rbxl (78.1 KB)

My opinion:

  • I wonder if this has to do with lod, since my camera is sort of far away, but other people say focus is where the game is most detailed.
    ↳ If it is, my game would heavily benefit from a feature to base the game’s detail on the camera’s focus rather than position.
    ↳ Unrelated to the bug, lighting effects like atmosphere, depth of field, etc. are based on camera location, not focus, and I don’t think you can change this, so my game can’t use them how I’d want to

Expected behavior

I expect the shadows to stay in the same places and that the weird lines don’t occur

3 Likes
2

I tested your place on PC but couldn’t see the circular shadow edges as the camera zoomed, are you still encountering this issue?

4

Testing on my phone, I still get the weird shadow circle. I’m not working on the game anymore, but as I remember, the glitch doesn’t occur on pc, so that could be why you don’t see it. If you have a phone, could you try testing on it? Link to demo place

1 Like
5

Thanks for the details, I’ve tested it on mobile and can see the same shadow artifacts as you. Unfortunately I can’t get to this right now, but we’ll follow up in this thread with any updates.

3 Likes
7

You’re roblox staff and had the graphics settings too low to render shadows??? How did you get hired? :skull_and_crossbones:

8

Where’s the update btw, busy looking up how to turn up your graphics for 3 months???

9

Im sending this thread to my buddies so we can laugh at you