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Content Migration

You can upgrade content of your project to UNIGINE 2.19 in the automatic or manual mode.

Warning
You cannot correctly migrate the project that contains assets with a version higher than the project version.

If your project contains at least one file with a higher version, upgrade to this version will be skipped, as the migration script would consider that the project is already upgraded to that version. Let's review an example case:

  • Your project is v. 2.14.1
  • It contains a v. 2.15 node.
  • You plan to upgrade the project to 2.16.

When you start the upgrade process, the following will happen:

  • Upgrading to v. 2.15 is skipped as you have one v. 2.15 node, and the script assumes the whole project is already using this version.
  • Upgrading to v. 2.15.1 is successful.
  • Upgrading to v. 2.16 is successful.

Thus, for a correct migration, follow this recommendation: ensure that the project does not contain assets with a version higher than the project version. This can be done by checking the number of the target version througout all project files. In the example above, you should check if any of your project files contains the text version="2.15" before starting the migration process.

Another way is to keep the Make Backup option enabled. In this case the project is automatically copied for reference, and if automatic migration goes wrong (i.e. it is stopped halfway and you see a message like "Skip migration to version "2.15" File: "D:/ProjectFolder/data/.../example_file.node in the migration log) you can fix the problem files manually.

Make Backup

Notice
You can delete the backup folder manually after you've migrated successfully.

Automatic Upgrade#

Automatic upgrade of the project's content can be performed via UNIGINE SDK Browser.

Notice
By default, the automatic mode is used to upgrade only binary executable files and content stored in the project's /data folder. If you have content stored outside the /data folder or in the additional /data folders, you will have to upgrade it manually.

As a result, the binary executable and configuration files, meshes, terrains, worlds, nodes, splines, materials, properties, tracks, settings files will be upgraded to new formats (if any). The <unigine_project>/migration.log.html log file will be opened in the web browser. However, you can uncheck Migrate Content during automatic upgrading and perform content upgrading manually. In this case, only binary executable files will be upgraded.

Notice
The migration results depend on the version of UNIGINE SDK, from which you are going to migrate.

Manual Upgrade#

Warning
This mode should be used to upgrade content stored outside the project's /data folder (such as mount points).

To upgrade the project's content in the manual mode, do the following:

  1. Put the binary executable <UnigineSDK>/bin/usc_x64.exe to the <UnigineSDK>/utils/upgrade folder that contains the upgrade script.
    Notice
    Use usc_x64.exe from the SDK version you are migrating to.
  2. In the command prompt, run the upgrade.usc with the required options:
    Shell commands
    usc_x64.exe upgrade.usc path/to/additional_content_1 path/to/additional_content_2 ...
    If you have unchecked Migrate Content during automatic upgrading, add the path to the project's data folder to the list of arguments passed to the upgrade script. For example:
    Shell commands
    usc_x64.exe upgrade.usc <unigine_project>/data path/to/additional_content_1 path/to/additional_content_2 ...
    Here:
    • path/to/additional_content_* - paths to folders with content stored outside the /data folder.

As a result, you will get your meshes, terrains, worlds, nodes, splines, materials, properties, tracks, configuration and settings files upgraded.

Notice
The migration results depend on the version of UNIGINE SDK, from which you are going to migrate.

As soon as migration is completed, run the Editor to have the project assets "indexed".

Migration of UNG Archives#

The UNG file format has been changed to support new streaming functionality along with removal of the 2Gb size-limitation for the files inside the archive. Old-style UNG-archives are not supported in 2.19+ projects with an automatic migration tool available. However, automatic migration does not support password-protected UNG-archives, so you'll have to manually unpack them using a ung_x64 tool from the SDK version that was used for packing and repack them back in a new format using the ung_x64 tool from UNIGINE 2.19 SDK.

Migration of Runtime Textures#

For all DDS textures, the Unchanged state is set to disabled. Due to this, you should manually inspect such textures and either enable the Unchanged state and reimport the texture or adjust the image import parameters (maybe even convert it to another format). For DDS textures created in result of light baking it is recommended to rebake lighting.

Migration of LUT Textures#

LUT textures in all worlds and render settings are reset to default. Manual reconfiguration is required.

Last update: 16.08.2024
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