IExternalObjectsHandleWrapRenderInterfaceContextFeature Interface
Definition
This interface allows proper management of ref-counted platform handles. If we immediately wrap the handle, the caller can destroy its copy immediately after the call This is needed for MoltenVK-based users that can e.g. get an MTLSharedEvent from a VkSemaphore. This does NOT actually increase the ref-counter of MTLSharedEvent, since it's declared as __unsafe_unretained in vulkan headers. Same happens with exporting an IOSurfaceRef from a VkImage. So in a case when the VkSemaphore or VkImage is destroyed, the "handle" which is actually a pointer will be pointing to a dead object. To prevent this we need to increase the reference counter in a handle-specific means synchronously before returning control back to the user.
This is not needed for fds or DXGI handles, since those are created on demand as proper NT handles
public interface IExternalObjectsHandleWrapRenderInterfaceContextFeature
Methods
| Name | Description |
|---|---|
| WrapImageHandleOnAnyThread | No summary available. |
| WrapSemaphoreHandleOnAnyThread | No summary available. |
WrapImageHandleOnAnyThread Method
public Avalonia.Platform.IExternalObjectsWrappedGpuHandle WrapImageHandleOnAnyThread(Avalonia.Platform.IPlatformHandle handle, Avalonia.Platform.PlatformGraphicsExternalImageProperties properties)
Parameters
handle Avalonia.Platform.IPlatformHandle
properties Avalonia.Platform.PlatformGraphicsExternalImageProperties
Returns
WrapSemaphoreHandleOnAnyThread Method
public Avalonia.Platform.IExternalObjectsWrappedGpuHandle WrapSemaphoreHandleOnAnyThread(Avalonia.Platform.IPlatformHandle handle)
Parameters
handle Avalonia.Platform.IPlatformHandle