3 Development Notes

  • “Virtual reality preview” in the scene editor is not supported.

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Figure 3.1 Does not support virtual reality preview

  • There is a bug in checking HDR, Unchecking Mobile HDR is recommended :

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Figure 3.2 Uncheck Mobile HDR

  • In Git project management, it is recommended to delete .so and .jar in the file .gitignore.

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Figure 3.3 Delete the .so tag

The PicoVR plugin contains .so and .jar files. When using git or other software for project maintenance, developers should not ignore the .so and .jar files in .gitignore. Deleting these two is recommended.

  • Frame rate limitation in UE4.24 will cause time-flow anomalies.

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Figure 3.4 Unreal frame rate limit option

In version 4.24, if you check the two checkboxes above or use corresponding methods in C++ code to limit frames, it will cause an abnormal time flow rate in the game, which is a problem of version 4.24. It is recommended that developers do not use either of these methods for frame-limiting operations within this release, or choose to use another engine version.

  • Version 4.24 has deprecated OpenGLES2, so it is recommended that developers do not use OpenGLES2 for packaging when developing with version 4.24, as this may lead to issues, such as crashing in certain levels.

  • In 4.24 and higher versions, there is the built-in TimeOfDay scene in the newly created scene. It is designed for diplaying the rendering capability of PC end and it is not recommended to use this scene on the mobile end.

  • It is recommended to delete Daydream-related settings under Project Settings-Android-Advanced APK Packaging, just as shown below:

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Figure 3.5 Delete related settings