The total amount of Texture memory that Unity allocates to the Textures in the scene after it applies the memory budget and finishes loading Textures. `targetTextureMemory`also takes mipmap streaming settings into account. This value only includes instances of Texture2D and CubeMap Textures. It does not include any other Texture types, or 2D and CubeMap Textures that Unity creates internally.
The total amount of Texture memory that Unity would use for the non-streaming and mipmap streaming Textures combined after it applies the memory budget and finishes loading Textures. This value also takes mipmap streaming settings into account.
The `currentTextureMemory` value becomes closer to this value as Unity loads or unloads Texture mipmaps.