Mobile Lighting bug (Android & iOS issue)

Hello! There is a bug I have come across while developing my game, there is a bug with the lighting not rendering properly on Mobile devices (Android & iOS), This doesn’t happen on computer devices, and it might depend on what the engine uses to render with (OpenGL, Metal, Direct3D11, Vulkan, etc.)

This is my computer specs:

  • OS: Windows 11
  • GPU: NVIDIA GeForce GTX 1650
  • CPU: Intel(R) Core™ i7-3770 CPU @ 3.40GHz

This is my Android Phone specs:

  • OS: Android 12
  • Model Name: Xiaomi Poco X3 NFC

I do not have an iOS device, the only way I know that this is a bug is because my friend with an iOS device has sent me an image while playing the game with 4 graphics quality (1 - 10)

Images taken from my computer with the listed specs above:

Maximum Graphics (Level 21, Direct3D11)


Minimum Graphics (Level 01, Direct3D11)

Images taken from my Android phone with the listed specs above:
NOTE: I do not know what Android phones use to render, but it could be either both OpenGL or Vulkan

Maximum Graphics (Level 21, OpenGL/Vulkan)


Minimum Graphics (Level 01, OpenGL/Vulkan) [ ! THIS IS THE ISSUE ! ]

Image taken from my friend’s iOS phone:

In-Between Graphics (Graphics Quality 4, Metal) [ ! THIS IS ALSO THE ISSUE ! ]

Now for what I used in the lighting settings and what is in the lighting service:


This is the game’s link if you want to try and see if you can reproduce the same lighting bug: [NEW] 👁 INDOMIC - Roblox

Expected behavior

I wanted to expect the lightings to look the same as computer on mobile devices too.

A private message is associated with this bug report

1 Like

Thank you for this report. Could you please confirm you’re still seeing the issue, validate that the issue is that the scene appears darker on some platforms (or tell us exactly what the difference/issue is), and provide a repro file? Thank you.

Yes, I am still seeing the issue using the same Android device provided in the post, it looks exactly the same. I’ve also tested it in my iPad and it looks the same too. I’ve used 1 graphics level for both. I haven’t changed the lighting settings from this post, everything is still the same.

Also, may I ask what a ‘repro’ file is?


Repro is a file (your game saved as a file) that will reproduce this type of error.
You can try to repo this bug on basic baseplate and send them it, if you don’t want to send your game

Alright, thank you, ill copy over every lighting setting to a new baseplate world and post over the file for the public to test

Here is the Repro file:
LightingBugTest.rbxl (57.5 KB)

I’ve also made it publicly available as a place to test on mobile devices:
Lighting Bug Test - Roblox