Branch based on Unity version

UNITY_VERSION contains the numeric value of the Unity version.

This can be used for version comparisons if you need to write shaders that use different built-in shader functionality. For example, use #if UNITY_VERSION >= 60000000 if you want the preprocessor check to pass only on Unity version 6.0 or later.

Unity 6

Use the format 6MMMPPPP, where:

• 6 is Unity 6.
• MMM is the minor version with leading zeroes, for example 002 for Unity 6.2.
• PPPP is the patch version with leading zeroes, for example 1234 for Unity 6.2.1234.

For example, for Unity 6000.2.3, use 60020003.

Unity 2023 or earlier

Use the format YYYYMP, where:

• YYYY is the major version.
• M is the minor version.
• P is the patch version.

For example, for Unity 2022.3.0, use 202230.

You can use only values up to 9 for the minor and patch versions. This means you can’t check for a Unity version with a minor version larger than 9 or a patch version larger than 9.