Bug 315200 – [WPE][GTK] Rationalize Vulkan types and their base wrapper templates

• Status: RESOLVED
• Resolution: FIXED
• Component: Platform

[Adrian Perez]

Currently we have the BaseStruct<T> and Structure<T, C> templates defined directly in VulkanTypes.h; but:

* Structure<T, C> does not need to inherit from BaseStruct<T>, because in reality Vulkan
  handles and structures are used differently. Inheritance for convenience of (very little)
  reuse here is not a good idea because we cannot pass a Structure where a Handle is expected.

  - While at it, these should be called “Structure” and “Handle”.

* Handles may be owned by other objects in some cases (for example VkPhysicalDevice) and
  instead of making each class override methods is not great.

  - Instead, we should be defining a different type for a handle that is “borrowed” and
    owned by some other object. This kind of handle would be copyable.

* It would be nicer to have separate VulkanHandle.h / VulkanStructure.h files for these types.

[Adrian Perez]

Pull request: https://github.com/WebKit/WebKit/pull/65296

[EWS]

Committed 313650@main (f5514504e1ab): <https://commits.webkit.org/313650@main>

Reviewed commits have been landed. Closing PR #65296 and removing active labels.

[Radar WebKit Bug Importer]

<rdar://problem/177596999>