[Bug 49813] Implement debugging feedback extensions (VK_EXT_debug_utils/VK_EXT_debug_report) to forward data to Linux impl

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49813

Georg Lehmann <dadschoorseapi at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |dadschoorseapi at gmail.com

--- Comment #1 from Georg Lehmann <dadschoorseapi at gmail.com> ---
I'm working on an implementation for this.

I think I found a way to implement calling convention conversion for the
callback calls, by using the user data parameter to store a the applications
callback + data and unwraping that in a general function.

But additionally those callbacks get the effected handle(s) as an argument.

This is major issue since winevulkan wraps some handles (VkCommandBuffer
VkDevice VkInstance VkCommandPool VkPhysicalDevice VkQueue).

We need to somehow get the wrapper from a native handle. Otherwise we would
return invalid handles to the application running in wine.

I see no easy way that fix this, other than to store a mapping of the effected
handles per instance. This could be enabled only if an effected extension is
activated.

A simpler alternative would be to fallback to the instance as the reporting
object, although I'm not sure if this couldn't cause other issues.

Either way, there might also be the handle in the message string itself, but I
strongly hope no application uses that for anything other than logging.

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