[MCPE-20515] Stairs have an odd lighting quirk due to their multiple-cuboid model Created: 20/Mar/17  Updated: 07/Jan/25

Status: Reopened
Project: Minecraft (Bedrock codebase)
Component/s: None
Affects Version/s: 1.20.70.24 Preview, 1.17.30.23 Beta, 1.16.200.57 Beta, 1.16.20.54 Beta, 1.14.1 Hotfix, 1.13.0.18 Beta, 1.0.4.11, 1.0.5.13, 1.0.6.0, 1.0.5.54, 1.1.0.0, 1.0.6.52, 1.1.0.4, 1.0.7.0, 1.1.0.9, 1.1.0.55, 1.1.1.1, 1.1.5.0, 1.2.0.22, 1.2.13.60, 1.2.16.3, 1.5.0.1, 1.7.0.9 Beta, 1.12.1, 1.16.100, 1.16.201 Hotfix, 1.16.221 Hotfix, 1.20.62 Hotfix, 1.21.51 Hotfix
Fix Version/s: None

Type: Bug
Reporter: Zeb
Resolution: Unresolved Votes: 13
Labels: lighting, model, smooth-lighting, stairs

Attachments: PNG File MCPE-20515.png    
Issue Links:
Relates
relates to MCPE-32907 Breaking certain blocks will darken s... Open
relates to MCPE-8054 Texture glitch for stairs Resolved
relates to MCPE-48366 Sandstone/red sandstone stairs appear... Reopened
relates to MCPE-37498 Top half of stair blocks turn dark wh... Resolved
Confirmation Status: Confirmed
Platform: Multiple
CHK:
ADO: 25358

 Description   

At night or in a dark room, if you look at the back side of stairs when there is a light source behind the stairs, there is a lighting quirk that occurs - most likely due to the multiple cuboids in the stairs model. Note that this issue only seems to occur with smooth lighting enabled.

This bug was previously mentioned in MCPE-8054, but since that ticket had become bloated with a total of 3 technically separate bugs (2 of which had been fixed), the remaining bug (this one) was reported separately and MCPE-8054 was resolved as fixed.

Steps to Reproduce:

  1. Set your brightness to 0 and enable smooth lighting.
  2. Go into a dark room or set the time to night.
  3. Place down stairs. (quartz is the best for seeing the bug)
  4. Place a torch in front of the stairs. (the side with the steps)
  5. View the stairs from the flat back side.


 Comments   
Comment by Invisible826 [ 17/Feb/24 ]

Still an issue in 1.20.62 and 1.20.70.24 Preview.

Comment by [Mojang] Mega_Spud (Jay Wells) [ 20/Aug/21 ]

Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response

Is this still an issue in the latest version? If so, please add a comment or update the affected version field.

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This ticket will automatically reopen when you reply.

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Comment by Spencer [ 25/May/21 ]

Still occurs on 1.16.221

instead of fixing the lights, they don't make lights pass through anymore, for java

Comment by Zeb [ 01/Dec/20 ]

DeeFeeCee, I just tested in 1.16.100 and the issue is still there, though it's worth noting that it only occurs when smooth lighting is enabled (and is most clearly visible when brightness is set to 0). I've updated the issue description to mention this.

1.16.101 appears to be a Switch + mobile-only hotfix with no bugfixes related to lighting, so I'm guessing the bug isn't actually fixed in that version. If it does still appear to be fixed with smooth lighting enabled and brightness set to 0 (and make sure it's in a dark room or at night), let me know.

Comment by Douglas F Correa [ 30/Nov/20 ]

Fixed as of 1.16.101 by rendering stairs as transparent.

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