dstQueueFamilyIndex

dstQueueFamilyIndex is a parameter used in Vulkan, a low-level graphics and compute API. It specifies the index of the queue family that the destination queue belongs to. Queue families are groups of queues that share certain properties, such as the type of operations they can perform (e.g., graphics, compute, transfer) and the capabilities they support (e.g., presentation, sparse binding).

In Vulkan, queues are used to submit commands to the GPU for execution. Each queue belongs to a specific queue family, and the queue family index is used to identify this family. The dstQueueFamilyIndex parameter is particularly relevant when dealing with image and buffer ownership transfers between different queue families.

When performing an image or buffer ownership transfer, the source and destination queues must belong to different queue families. The dstQueueFamilyIndex parameter is used to specify the queue family index of the destination queue. This information is necessary for Vulkan to correctly manage the ownership transfer and ensure that the operations are performed in the correct order.

In summary, dstQueueFamilyIndex is a crucial parameter in Vulkan for specifying the queue family index of the destination queue when performing image or buffer ownership transfers between different queue families. It helps Vulkan manage the operations and ensure correct execution order.