Add support to export HAP (HarmonyOS Ability Package)

[lamdeyton]

Describe the project you are working on

a 3d tool app in production

Describe the problem or limitation you are having in your project

the tool app need to be able to run on Harmony Next OS.

Describe the feature / enhancement and how it helps to overcome the problem or limitation

Add support to export HAP (HarmonyOS Ability Package) which can be run on Harmony Next OS.

Describe how your proposal will work, with code, pseudo-code, mock-ups, and/or diagrams

Export HAP binary

If this enhancement will not be used often, can it be worked around with a few lines of script?

no

Is there a reason why this should be core and not an add-on in the asset library?

This will bring more users to godot

[Calinou]

Moving to discussion, as there is no concrete technical implementation provided.

Note that HarmonyOS has nothing in common in Android, so I expect a port to be nontrivial. Godot relies on a lot of different OS-specific APIs and requires hardware acceleration (OpenGL ES 3.0 or Vulkan 1.0¹).

Footnotes

1. A lot of Android devices have buggy drivers (particularly those limited to Vulkan 1.0 or 1.1), and I expect this to transfer to HarmonyOS. In practice, it's strongly recommended to have Vulkan 1.2 support. ↩

[dsyze]

There's no details on how to do this provided so we can't plan to do something we don't know is possible, or even wanted

So more information is needed. Like if this is possible with open source

Thanks, as for now, the Chinese agent of the Unity engine has completed export support for HarmonyOS. I hope the information in the following link will be helpful: https://docs.unity.cn/cn/tuanjiemanual/Manual/openharmony-introducing.html

[dsyze]

There's no details on how to do this provided so we can't plan to do something we don't know is possible, or even wanted

So more information is needed. Like if this is possible with open source

I’d like to start working on the HarmonyOS port. Is there an existing workflow I can reference? The development docs for porting to Android should be quite helpful.

[Calinou]

Is there an existing workflow I can reference?

The Custom platform ports documentation is a good starting point.

How does OpenGL ES and Vulkan support look like on HarmonyOS? The Forward+/Mobile rendering methods require Vulkan support, while Compatibility requires OpenGL ES 3.0.

[waci11]

Is there an existing workflow I can reference?

The Custom platform ports documentation is a good starting point.

How does OpenGL ES and Vulkan support look like on HarmonyOS? The Forward+/Mobile rendering methods require Vulkan support, while Compatibility requires OpenGL ES 3.0.

https://developer.huawei.com/consumer/en/doc/harmonyos-guides-V5/arkgraphics3d-overview-V5#constraints
To use the ArkGraphics 3D service, the device must support the GPU driver of OpenGL ES 3.2 or later or Vulkan 1.0 or later.

I think it support OpenGL ES 3.2 or later or Vulkan 1.0 .

[dsyze]

Is there an existing workflow I can reference?

The Custom platform ports documentation is a good starting point.

How does OpenGL ES and Vulkan support look like on HarmonyOS? The Forward+/Mobile rendering methods require Vulkan support, while Compatibility requires OpenGL ES 3.0.

OK, I have a guy who is skilled at C++, and he told he wants to make games by himself in the future. I introduced him Godot, and now he has started learning Godot. Trying to make godot Porting to HarmonyOs must be a good practice for him.