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Fixed in 2022.1.X
Fixed in 2021.2.X
Votes
3
Found in
Issue ID
1339314
Regression
No
Shader cache grows indefinitely
Shader cache has no means of automatically purging old entries. This means that the cache grows indefinitely unless manually deleted. The problem with manual cache purge is that there is no way to preserve the currently valid data, so full recompilation is required after it. When iterating changes on complex shaders and especially when touching include files that are used in multiple shaders, the cache size can quickly grow into gigabytes range. This can eventually lead into out of disk space situation.
https://forum.unity.com/threads/unity-editor-cache-folder-leak-ran-out-of-space-on-disk.1115794/
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oleg_v
May 29, 2021 20:53
And it seems issue can be the reason for Unity to hang on switching Game/Editor mode
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Resolution Note (fix version 2022.1):
Restructured the shader cache to allow proper revision handling and eviction policy. It is now also possible to clear the cache for specific shader assets manually due to the new structure.