2990cc5f71
Instead of dragging the last destination pipeline stage as current barrier source pipeline stage (which isn't a valid semantic) this patch adds a parameter to gst_vulkan_operation_add_frame_barrier() to set the source pipeline stage to define the barrier. The previous logic brought problems particularly with queue transfers, when the new queue doesn't support the stage set during a previous operation in a different queue. Now the operation API is closer to Vulkan semantics. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7165>