vk: Sync main pipe with async jobs if any

rpcs3/Emu/RSX/VK/VKDraw.cpp

@@ -1,6 +1,8 @@
 #include "stdafx.h"
 #include "../Common/BufferUtils.h"
 #include "../rsx_methods.h"
+
+#include "VKAsyncScheduler.h"
 #include "VKGSRender.h"
 #include "vkutils/buffer_object.h"
 
@@ -960,6 +962,12 @@ void VKGSRender::end()
 	load_program_env();
 	m_frame_stats.setup_time += m_profiler.duration();
 
+	// Sync any async scheduler tasks
+	if (auto ev = g_fxo->get<vk::async_scheduler_thread>()->get_primary_sync_label())
+	{
+		ev->gpu_wait(*m_current_command_buffer);
+	}
+
 	if (!m_shader_interpreter.is_interpreter(m_program)) [[likely]]
 	{
 		bind_texture_env();

rpcs3/Emu/RSX/VK/vkutils/sync.cpp

@@ -122,6 +122,12 @@ namespace vk
 		vkSetEvent(m_device, m_vk_event);
 	}
 
+	void event::gpu_wait(const command_buffer& cmd) const
+	{
+		ensure(m_vk_event);
+		vkCmdWaitEvents(cmd, 1, &m_vk_event, 0, 0, 0, nullptr, 0, nullptr, 0, nullptr);
+	}
+
 	void event::reset() const
 	{
 		if (m_vk_event) [[likely]]

rpcs3/Emu/RSX/VK/vkutils/sync.h

@@ -46,6 +46,7 @@ namespace vk
 
 		void signal(const command_buffer& cmd, VkPipelineStageFlags stages, VkAccessFlags access);
 		void host_signal() const;
+		void gpu_wait(const command_buffer& cmd) const;
 		VkResult status() const;
 		void reset() const;
 	};