danny couture 0655582bd0 Fix stutters in the game-thread while streaming texture mips from DDC. ...

This will fix a good bunch of ForceRebuildPlatformData in UTexture2D::UpdateStreamingStatus because of the Boot DDC telling it has some mips cached effectively preventing other cache layers from receiving them.
When the Boot DDC is disabled after the editor boot, all the mips will go into oblivion, and nobody will have them anymore, causing stutters in the game-thread while streaming because a second full rebuild is now required.

Any DDC that plans on disappearing should never be alone in the cache hierarchy and should give other levels the opportunity to properly cache data before its disapperance.

#rb Francis.Hurteau, Devin.Doucette, Andrew.Grant

[CL 14268431 by danny couture in ue5-main branch]

2020-09-08 10:50:47 -04:00

..

Private

Fix stutters in the game-thread while streaming texture mips from DDC.

2020-09-08 10:50:47 -04:00

Public

Moved some DDC debug options into a common class that can be provided to a backend to simulate certain behavior.

2020-03-26 20:55:39 -04:00

DerivedDataCache.Build.cs

Merging //UE5/Release-Engine-Staging @ 13752110 to Main (//UE5/Main)

2020-06-23 18:40:00 -04:00