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  1. Minecraft: Java Edition
  2. MC-238573

Rendering engine creates fullbright spots on custom block models at low light levels

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • 21w40a, 21w42a, 21w43a, 21w44a, 1.18 Pre-release 1, 1.18 Pre-release 2, 1.18 Pre-release 3, 1.18 Pre-release 4, 1.18 Pre-release 5, 1.18 Pre-release 6, 1.18 Release Candidate 1, 1.18.1, 1.19.3, 1.19.4, 1.20 Release Candidate 1, 1.20, 1.20.2, 1.20.4, 24w05b, 1.20.6, 1.21, 1.21.1, 24w36a
    • None
    • Confirmed
    • Textures and models
    • Normal
    • Platform

      When using custom models for blocks (such as dripstone) the game will sometimes incorrectly render some faces of the model fully bright.

      It happens when the block is on the edge between 1 and 0 block light.

      I don't think this should be classified as invalid because even tough it's only visible on non-vanilla block models this is a problem with the rendering engine itself rather than the texturepack.

      To Reproduce

      1. Download and enable the resource pack Enhanced Dripstone v1.1.zip
      2. Place down a torch
      3. Dig a 13 block long tunnel away from the torch (as shown in attachment below)
      4. Place a barrier block on the 12th block and a dripstone on top of it
      5. Observe the bug

      Expected Behavior

      The side of the pointed dripstone should not be fully bright.

      Observed Behavior

      It is.

        1. 2021-10-08_16.04.39.png
          2021-10-08_16.04.39.png
          1.47 MB
        2. 2021-10-08_16.04.43.png
          2021-10-08_16.04.43.png
          1.78 MB
        3. 2024-06-22_15.04.33.png
          2024-06-22_15.04.33.png
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        4. 2024-06-22_15.04.57.png
          2024-06-22_15.04.57.png
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        5. 2024-06-22_15.16.11.png
          2024-06-22_15.16.11.png
          311 kB
        6. Enhanced Dripstone v1.1.zip
          8 kB

            Unassigned Unassigned
            Ceresjanin123 Ceresjanin123
            Votes:
            3 Vote for this issue
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              Created:
              Updated:
              CHK: