You've already forked UnrealEngineUWP
mirror of
https://github.com/izzy2lost/UnrealEngineUWP.git
synced 2026-03-26 18:15:20 -07:00
1eab09f9c7
Currently, Landscape will only apply the new storage provider to it's heightmaps at cook time, when it sees that the landscape has been flagged to use the new compressed storage path (enabled under Landscape -> Advanced), and only for Windows platforms (to be expanded as we test other platforms).
The compressed storage path option on the landscape is hidden by default, and can be made visible via CVAR ("landscape.ShowCompressHeightMapsOption")
Makes use of a new All Mip Provider interface to Texture2Ds, that expands on the existing Mip Data Provider (that only supported providing streaming mips).
The new interface assumes you want to completely override the Texture2D mip data.
When Texture2D sees that it has an All Mip Provider, it will skip serializing it's own heavyweight mip data during cook, as it assumes the provider will take care of providing all mip data.
The majority of the implementation is in LandscapeTextureStorageProvider, which implements the AllMipProvider that can store landscape heightmaps in a custom compressed format. Each mip's height data is stored using delta encoding, and normals are reconstructed.
#rb jonathan.bard, jian.ru
#jira UE-180654
#preflight 64541acf6c35ad81e61890cc
#preflight 64542713fd4b8f4e0d9a2ce9
#preflight 6459378bfd4b8f4e0dc206d2
[CL 25381191 by chris tchou in ue5-main branch]