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Completely Unused Textures Sitting in Memory (NonStreaming mips)

Hey folks! I'm running up against a very odd situation that's affecting a couple of my games. Basically, it seems like every single texture I add to the content browser gets loaded into the texture pool.

I noticed this when we kept hitting texture pool size warnings basically everywhere in our game--even menus where very little was getting rendered. When I ran Stat Streaming, I saw that the number in NonStreaming mips was huge. That seemed weird to me, so I ran ListTextures and the output log filled up with literally every texture I've added to the game.

To further test this, I created a completely blank level and ran it again. Same thing. This is my Stat Streaming from a level that has literally nothing in it.

alt text

To further test this, I added a very large texture to the game content browser and ran ListTextures. It came up as loaded into the texture pool even though I use it nowhere in the game. I have no sprites or materials that reference it at all.

I have Texture Streaming turned on and only a few of my UI textures are set to "Never Stream". I realize I could just bump up my texture pool and solve this problem, but this feels like something that I should be able to fix. Thanks!

edit: all my textures are Power of 2 sizes so that's not the problem either.

Product Version: UE 4.20
stat-streaming.png (23.7 kB)
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asked Jan 03 '19 at 09:47 PM in Rendering

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