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Fixed in 2021.3.35f1, 2022.3.14f1, 2023.2.6f1, 2023.3.0b3, 7000.0.0a1



Found in






Issue ID




GI meta pass is generating unique textures for identical instances



This case is about meta pass textures not getting de-duplicated, the bug about pvr runtime manager holding on to lightmap textures is tracked as a clone here [UUM-56491] CLONE - Lightmapping memory does not deallocate when baking is completed - Unity JIRA (


Reproduction steps:
1. Open the attached "" project
2. Open the "Assets/Scenes/SampleScene.unity"
3. Open the Memory Profiler ("Window" > "Analysis" > "Memory Profiler")
4. Take a memory capture of the Scene (press the "Capture New Snapshot" button)
5. Open the BigBox Lightmapping Window ("BigBoxVR" > "Lightmapping Window")
6. Press the "Bake Scene" button and wait for the process to finish (the Scene will change to "SampleScene--Lightmapped")
7. Take a memory capture of the "SampleScene--Lightmapped" Scene
8. Observe the "Texture2D" memory usage in the new capture

Expected result: "Texture2D" memory usage remains the same as in the first capture
Actual result: "Texture2D" shows around a 10x increase in the memory usage

Reproduced with: 2021.3.32f1, 2022.3.13f1, 2023.1.19f1, 2023.2.0b16, 2023.3.0a12

Reproduced on: Windows 10 (22H2)
Not reproduced on: No other environments tested

Note: In 2023.3.0a12, the memory usage increase is around 4x

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