vk: Clean up around vkQueueSubmit handling

- Explicitly declare one version for CB flush and the other for Async flush
- Always flush descriptors on CB flush in case of page fault handling.
  Other threads other than offloader can also enter the method and require normal flow.
- Fix overlapping interrupt IDs.
- Minor formatting fixes

rpcs3/Emu/RSX/Common/bitfield.hpp

@@ -87,7 +87,7 @@ namespace rsx
 
 		void clear()
 		{
-			m_data.store(0);
+			m_data.release(0);
 		}
 	};
 }

rpcs3/Emu/RSX/VK/VKCommandStream.cpp

@@ -23,12 +23,22 @@ namespace vk
 		g_submit_mutex.unlock();
 	}
 
+	FORCE_INLINE
+	static void queue_submit_impl(VkQueue queue, const VkSubmitInfo* info, fence* pfence)
+	{
+		acquire_global_submit_lock();
+		vkQueueSubmit(queue, 1, info, pfence->handle);
+		release_global_submit_lock();
+
+		// Signal fence
+		pfence->signal_flushed();
+	}
+
 	void queue_submit(VkQueue queue, const VkSubmitInfo* info, fence* pfence, VkBool32 flush)
 	{
-		if (rsx::get_current_renderer()->is_current_thread())
-		{
-			vk::descriptors::flush();
-		}
+		// Access to this method must be externally synchronized.
+		// Offloader is guaranteed to never call this for async flushes.
+		vk::descriptors::flush();
 
 		if (!flush && g_cfg.video.multithreaded_rsx)
 		{
@@ -37,12 +47,13 @@ namespace vk
 		}
 		else
 		{
-			acquire_global_submit_lock();
-			vkQueueSubmit(queue, 1, info, pfence->handle);
-			release_global_submit_lock();
-
-			// Signal fence
-			pfence->signal_flushed();
+			queue_submit_impl(queue, info, pfence);
 		}
 	}
+
+	void queue_submit(const vk::submit_packet* packet)
+	{
+		// Flush-only version used by asynchronous submit processing (MTRSX)
+		queue_submit_impl(packet->queue, &packet->submit_info, packet->pfence);
+	}
 }

rpcs3/Emu/RSX/VK/VKGSRender.cpp

@@ -760,9 +760,9 @@ bool VKGSRender::on_access_violation(u32 address, bool is_writing)
 		}
 
 		bool has_queue_ref = false;
-		if (!is_current_thread())
+		if (!is_current_thread()) [[likely]]
 		{
-			//Always submit primary cb to ensure state consistency (flush pending changes such as image transitions)
+			// Always submit primary cb to ensure state consistency (flush pending changes such as image transitions)
 			vm::temporary_unlock();
 
 			std::lock_guard lock(m_flush_queue_mutex);
@@ -777,13 +777,13 @@ bool VKGSRender::on_access_violation(u32 address, bool is_writing)
 				rsx_log.error("Fault in uninterruptible code!");
 			}
 
-			//Flush primary cb queue to sync pending changes (e.g image transitions!)
+			// Flush primary cb queue to sync pending changes (e.g image transitions!)
 			flush_command_queue();
 		}
 
 		if (has_queue_ref)
 		{
-			//Wait for the RSX thread to process request if it hasn't already
+			// Wait for the RSX thread to process request if it hasn't already
 			m_flush_requests.producer_wait();
 		}
 
@@ -791,7 +791,7 @@ bool VKGSRender::on_access_violation(u32 address, bool is_writing)
 
 		if (has_queue_ref)
 		{
-			//Release RSX thread
+			// Release RSX thread
 			m_flush_requests.remove_one();
 		}
 	}
@@ -2340,8 +2340,8 @@ void VKGSRender::renderctl(u32 request_code, void* args)
 	{
 	case vk::rctrl_queue_submit:
 	{
-		auto packet = reinterpret_cast<vk::submit_packet*>(args);
-		vk::queue_submit(packet->queue, &packet->submit_info, packet->pfence, VK_TRUE);
+		const auto packet = reinterpret_cast<vk::submit_packet*>(args);
+		vk::queue_submit(packet);
 		free(packet);
 		break;
 	}

rpcs3/Emu/RSX/VK/VKHelpers.h

@@ -32,19 +32,19 @@ namespace vk
 	class image;
 	class instance;
 	class render_device;
+	struct submit_packet;
 
-	//VkAllocationCallbacks default_callbacks();
 	enum runtime_state
 	{
 		uninterruptible = 1,
-		heap_dirty = 2,
-		heap_changed = 3
+		heap_dirty      = 2,
+		heap_changed    = 4,
 	};
 
 	const vk::render_device *get_current_renderer();
 	void set_current_renderer(const vk::render_device &device);
 
-	//Compatibility workarounds
+	// Compatibility workarounds
 	bool emulate_primitive_restart(rsx::primitive_type type);
 	bool sanitize_fp_values();
 	bool fence_reset_disabled();
@@ -54,7 +54,7 @@ namespace vk
 	// Sync helpers around vkQueueSubmit
 	void acquire_global_submit_lock();
 	void release_global_submit_lock();
-	void queue_submit(VkQueue queue, const VkSubmitInfo* info, fence* pfence, VkBool32 flush = VK_FALSE);
+	void queue_submit(const vk::submit_packet* packet);
 
 	template<class T>
 	T* get_compute_task();
@@ -64,12 +64,12 @@ namespace vk
 
 	enum image_upload_options
 	{
-		upload_contents_async = 1,
+		upload_contents_async   = 1,
 		initialize_image_layout = 2,
-		preserve_image_layout = 4,
+		preserve_image_layout   = 4,
 
 		// meta-flags
-		upload_contents_inline = 0,
+		upload_contents_inline    = 0,
 		upload_heap_align_default = 0
 	};
 
@@ -77,7 +77,7 @@ namespace vk
 		const std::vector<rsx::subresource_layout>& subresource_layout, int format, bool is_swizzled, u16 layer_count,
 		VkImageAspectFlags flags, vk::data_heap &upload_heap, u32 heap_align, rsx::flags32_t image_setup_flags);
 
-	//Other texture management helpers
+	// Other texture management helpers
 	void copy_image_to_buffer(VkCommandBuffer cmd, const vk::image* src, const vk::buffer* dst, const VkBufferImageCopy& region, bool swap_bytes = false);
 	void copy_buffer_to_image(VkCommandBuffer cmd, const vk::buffer* src, const vk::image* dst, const VkBufferImageCopy& region);
 	u64  calculate_working_buffer_size(u64 base_size, VkImageAspectFlags aspect);

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

@@ -6,7 +6,7 @@
 namespace vk
 {
 	// This queue flushing method to be implemented by the backend as behavior depends on config
-	void queue_submit(VkQueue queue, const VkSubmitInfo* info, fence* pfence, VkBool32 flush = VK_FALSE);
+	void queue_submit(VkQueue queue, const VkSubmitInfo* info, fence* pfence, VkBool32 flush);
 
 	void command_pool::create(vk::render_device& dev, u32 queue_family_id)
 	{

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

@@ -39,8 +39,8 @@ namespace vk
 	public:
 		enum access_type_hint
 		{
-			flush_only, //Only to be submitted/opened/closed via command flush
-			all         //Auxiliary, can be submitted/opened/closed at any time
+			flush_only, // Only to be submitted/opened/closed via command flush
+			all         // Auxiliary, can be submitted/opened/closed at any time
 		}
 		access_hint = flush_only;