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]
#rb Per.Larsson
#jira none
#rnx
#preflight 6453ce50d863ba2621851360
- FCompressedBuffer will calculate the FIoHash of its data and FEditorBulkData can take the hash from there rather than calculating one itself. If you create one with no compression codec set you could use that to control when the hashing takes place before passing the data to FEditorBulkData.
- In the future we might change FEditorBulkData to hold its data in a FCompressedBuffer, allowing us to avoid decompressing the payload unless someone actually asks for it in uncompressed format.
- Added some unit tests
[CL 25352762 by paul chipchase in ue5-main branch]
#rb Per.Larsson
#jira UE-139530
#rnx
#preflight 644bc6e4f502608229ff7e68
- The functionality remains mostly the same and is still disabled by default.
- We use the older legacy serialization path if sidecar saving is enabled.
- Updating the code to use FPackageTrailer allows us to finally delete the older which was the precursor to the FPackageTrailer system. This will allow us to combine some code paths in the future and reduce complexity.
[CL 25232459 by paul chipchase in ue5-main branch]
This allows your assets to warn on top of erroring out.
#jira UE-183475
#preflight 644ae7701c2846595cbe0e21
[CL 25224515 by jodon karlik in ue5-main branch]
