#include "stdafx.h"
#include "VKHelpers.h"

#include <mutex>

namespace vk
{
	context* g_current_vulkan_ctx = nullptr;
	render_device g_current_renderer;

	std::unique_ptr<image> g_null_texture;
	std::unique_ptr<image_view> g_null_image_view;

	VkSampler g_null_sampler = nullptr;

	atomic_t<bool> g_cb_no_interrupt_flag { false };
	atomic_t<bool> g_drv_no_primitive_restart_flag { false };

	u64 g_num_processed_frames = 0;
	u64 g_num_total_frames = 0;

	//global submit guard to prevent race condition on queue submit
	std::mutex g_submit_mutex;

	VKAPI_ATTR void* VKAPI_CALL mem_realloc(void* pUserData, void* pOriginal, size_t size, size_t alignment, VkSystemAllocationScope allocationScope)
	{
#ifdef _MSC_VER
		return _aligned_realloc(pOriginal, size, alignment);
#elif _WIN32
		return __mingw_aligned_realloc(pOriginal, size, alignment);
#else
		std::abort();
#endif
	}

	VKAPI_ATTR void* VKAPI_CALL mem_alloc(void* pUserData, size_t size, size_t alignment, VkSystemAllocationScope allocationScope)
	{
#ifdef _MSC_VER
		return _aligned_malloc(size, alignment);
#elif _WIN32
		return __mingw_aligned_malloc(size, alignment);
#else
		std::abort();
#endif
	}

	VKAPI_ATTR void VKAPI_CALL mem_free(void* pUserData, void* pMemory)
	{
#ifdef _MSC_VER
		_aligned_free(pMemory);
#elif _WIN32
		__mingw_aligned_free(pMemory);
#else
		std::abort();
#endif
	}

	memory_type_mapping get_memory_mapping(VkPhysicalDevice pdev)
	{
		VkPhysicalDeviceMemoryProperties memory_properties;
		vkGetPhysicalDeviceMemoryProperties(pdev, &memory_properties);

		memory_type_mapping result;
		result.device_local = VK_MAX_MEMORY_TYPES;
		result.host_visible_coherent = VK_MAX_MEMORY_TYPES;

		bool host_visible_cached = false;
		VkDeviceSize  host_visible_vram_size = 0;
		VkDeviceSize  device_local_vram_size = 0;

		for (u32 i = 0; i < memory_properties.memoryTypeCount; i++)
		{
			VkMemoryHeap &heap = memory_properties.memoryHeaps[memory_properties.memoryTypes[i].heapIndex];
			
			bool is_device_local = !!(memory_properties.memoryTypes[i].propertyFlags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
			if (is_device_local)
			{
				if (device_local_vram_size < heap.size)
				{
					result.device_local = i;
					device_local_vram_size = heap.size;
				}
			}

			bool is_host_visible = !!(memory_properties.memoryTypes[i].propertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
			bool is_host_coherent = !!(memory_properties.memoryTypes[i].propertyFlags & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
			bool is_cached = !!(memory_properties.memoryTypes[i].propertyFlags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT);
			
			if (is_host_coherent && is_host_visible)
			{
				if ((is_cached && !host_visible_cached) ||
					(host_visible_vram_size < heap.size))
				{
					result.host_visible_coherent = i;
					host_visible_vram_size = heap.size;
					host_visible_cached = is_cached;
				}
			}
		}

		if (result.device_local == VK_MAX_MEMORY_TYPES) fmt::throw_exception("GPU doesn't support device local memory" HERE);
		if (result.host_visible_coherent == VK_MAX_MEMORY_TYPES) fmt::throw_exception("GPU doesn't support host coherent device local memory" HERE);
		return result;
	}

	VkFormat get_compatible_sampler_format(u32 format)
	{
		switch (format)
		{
		case CELL_GCM_TEXTURE_B8: return VK_FORMAT_R8_UNORM;
		case CELL_GCM_TEXTURE_A1R5G5B5: return VK_FORMAT_A1R5G5B5_UNORM_PACK16;
		case CELL_GCM_TEXTURE_A4R4G4B4: return VK_FORMAT_R4G4B4A4_UNORM_PACK16;
		case CELL_GCM_TEXTURE_R5G6B5: return VK_FORMAT_R5G6B5_UNORM_PACK16;
		case CELL_GCM_TEXTURE_A8R8G8B8: return VK_FORMAT_B8G8R8A8_UNORM;
		case CELL_GCM_TEXTURE_COMPRESSED_DXT1: return VK_FORMAT_BC1_RGBA_UNORM_BLOCK;
		case CELL_GCM_TEXTURE_COMPRESSED_DXT23: return VK_FORMAT_BC2_UNORM_BLOCK;
		case CELL_GCM_TEXTURE_COMPRESSED_DXT45: return VK_FORMAT_BC3_UNORM_BLOCK;
		case CELL_GCM_TEXTURE_G8B8: return VK_FORMAT_R8G8_UNORM;
		case CELL_GCM_TEXTURE_R6G5B5: return VK_FORMAT_R5G6B5_UNORM_PACK16; // Expand, discard high bit?
		case CELL_GCM_TEXTURE_DEPTH24_D8: return VK_FORMAT_R32_UINT;
		case CELL_GCM_TEXTURE_DEPTH24_D8_FLOAT:	return VK_FORMAT_R32_SFLOAT;
		case CELL_GCM_TEXTURE_DEPTH16: return VK_FORMAT_R16_UINT;
		case CELL_GCM_TEXTURE_DEPTH16_FLOAT: return VK_FORMAT_R16_SFLOAT;
		case CELL_GCM_TEXTURE_X16: return VK_FORMAT_R16_UNORM;
		case CELL_GCM_TEXTURE_Y16_X16: return VK_FORMAT_R16G16_UNORM;
		case CELL_GCM_TEXTURE_Y16_X16_FLOAT: return VK_FORMAT_R16G16_SFLOAT;
		case CELL_GCM_TEXTURE_R5G5B5A1: return VK_FORMAT_R5G5B5A1_UNORM_PACK16;
		case CELL_GCM_TEXTURE_W16_Z16_Y16_X16_FLOAT: return VK_FORMAT_R16G16B16A16_SFLOAT;
		case CELL_GCM_TEXTURE_W32_Z32_Y32_X32_FLOAT: return VK_FORMAT_R32G32B32A32_SFLOAT;
		case CELL_GCM_TEXTURE_X32_FLOAT: return VK_FORMAT_R32_SFLOAT;
		case CELL_GCM_TEXTURE_D1R5G5B5: return VK_FORMAT_A1R5G5B5_UNORM_PACK16;
		case CELL_GCM_TEXTURE_D8R8G8B8: return VK_FORMAT_B8G8R8A8_UNORM;
		case CELL_GCM_TEXTURE_COMPRESSED_B8R8_G8R8: return VK_FORMAT_A8B8G8R8_UNORM_PACK32;	// Expand
		case CELL_GCM_TEXTURE_COMPRESSED_R8B8_R8G8: return VK_FORMAT_R8G8B8A8_UNORM; // Expand
		case CELL_GCM_TEXTURE_COMPRESSED_HILO8: return VK_FORMAT_R8G8_UNORM;
		case CELL_GCM_TEXTURE_COMPRESSED_HILO_S8: return VK_FORMAT_R8G8_SNORM;
		case ~(CELL_GCM_TEXTURE_LN | CELL_GCM_TEXTURE_UN) & CELL_GCM_TEXTURE_COMPRESSED_B8R8_G8R8: return VK_FORMAT_R8G8_UNORM; // Not right
		case ~(CELL_GCM_TEXTURE_LN | CELL_GCM_TEXTURE_UN) & CELL_GCM_TEXTURE_COMPRESSED_R8B8_R8G8: return VK_FORMAT_R8G8_UNORM; // Not right
		}
		fmt::throw_exception("Invalid or unsupported sampler format for texture format (0x%x)" HERE, format);
	}

	u8 get_format_texel_width(const VkFormat format)
	{
		switch (format)
		{
		case VK_FORMAT_R8_UNORM:
			return 1;
		case VK_FORMAT_R16_UINT:
		case VK_FORMAT_R16_SFLOAT:
		case VK_FORMAT_R16_UNORM:
		case VK_FORMAT_R8G8_UNORM:
		case VK_FORMAT_R8G8_SNORM:
		case VK_FORMAT_A1R5G5B5_UNORM_PACK16:
		case VK_FORMAT_R4G4B4A4_UNORM_PACK16:
		case VK_FORMAT_R5G6B5_UNORM_PACK16:
		case VK_FORMAT_R5G5B5A1_UNORM_PACK16:
			return 2;
		case VK_FORMAT_R32_UINT:
		case VK_FORMAT_R32_SFLOAT:
		case VK_FORMAT_R16G16_UNORM:
		case VK_FORMAT_R16G16_SFLOAT:
		case VK_FORMAT_A8B8G8R8_UNORM_PACK32:
		case VK_FORMAT_R8G8B8A8_UNORM:
		case VK_FORMAT_B8G8R8A8_UNORM:
		case VK_FORMAT_BC1_RGBA_UNORM_BLOCK:
		case VK_FORMAT_BC2_UNORM_BLOCK:
		case VK_FORMAT_BC3_UNORM_BLOCK:
			return 4;
		case VK_FORMAT_R16G16B16A16_SFLOAT:
			return 8;
		case VK_FORMAT_R32G32B32A32_SFLOAT:
			return 16;
		case VK_FORMAT_D16_UNORM:
			return 2;
		case VK_FORMAT_D32_SFLOAT_S8_UINT: //TODO: Translate to D24S8
		case VK_FORMAT_D24_UNORM_S8_UINT:
			return 4;
		}

		fmt::throw_exception("Unexpected vkFormat 0x%X", (u32)format);
	}

	VkAllocationCallbacks default_callbacks()
	{
		VkAllocationCallbacks callbacks;
		callbacks.pfnAllocation = vk::mem_alloc;
		callbacks.pfnFree = vk::mem_free;
		callbacks.pfnReallocation = vk::mem_realloc;

		return callbacks;
	}

	VkSampler null_sampler()
	{
		if (g_null_sampler)
			return g_null_sampler;

		VkSamplerCreateInfo sampler_info = {};

		sampler_info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
		sampler_info.addressModeU = VK_SAMPLER_ADDRESS_MODE_REPEAT;
		sampler_info.addressModeV = VK_SAMPLER_ADDRESS_MODE_REPEAT;
		sampler_info.addressModeW = VK_SAMPLER_ADDRESS_MODE_REPEAT;
		sampler_info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
		sampler_info.anisotropyEnable = VK_FALSE;
		sampler_info.compareEnable = VK_FALSE;
		sampler_info.unnormalizedCoordinates = VK_FALSE;
		sampler_info.mipLodBias = 0;
		sampler_info.maxAnisotropy = 0;
		sampler_info.magFilter = VK_FILTER_NEAREST;
		sampler_info.minFilter = VK_FILTER_NEAREST;
		sampler_info.compareOp = VK_COMPARE_OP_NEVER;
		sampler_info.borderColor = VK_BORDER_COLOR_FLOAT_OPAQUE_WHITE;

		vkCreateSampler(g_current_renderer, &sampler_info, nullptr, &g_null_sampler);
		return g_null_sampler;
	}

	VkImageView null_image_view(vk::command_buffer &cmd)
	{
		if (g_null_image_view)
			return g_null_image_view->value;

		g_null_texture.reset(new image(g_current_renderer, get_memory_mapping(g_current_renderer.gpu()).device_local, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
			VK_IMAGE_TYPE_2D, VK_FORMAT_B8G8R8A8_UNORM, 4, 4, 1, 1, 1, VK_SAMPLE_COUNT_1_BIT, VK_IMAGE_LAYOUT_UNDEFINED,
			VK_IMAGE_TILING_OPTIMAL, VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT, 0));

		g_null_image_view.reset(new image_view(g_current_renderer, g_null_texture->value, VK_IMAGE_VIEW_TYPE_2D,
			VK_FORMAT_B8G8R8A8_UNORM, {VK_COMPONENT_SWIZZLE_R, VK_COMPONENT_SWIZZLE_G, VK_COMPONENT_SWIZZLE_B, VK_COMPONENT_SWIZZLE_A},
			{VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1}));

		// Initialize memory to transparent black
		VkClearColorValue clear_color = {};
		VkImageSubresourceRange range = { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 };
		change_image_layout(cmd, g_null_texture.get(), VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, range);
		vkCmdClearColorImage(cmd, g_null_texture->value, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, &clear_color, 1, &range);

		// Prep for shader access
		change_image_layout(cmd, g_null_texture.get(), VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, range);
		return g_null_image_view->value;
	}

	void acquire_global_submit_lock()
	{
		g_submit_mutex.lock();
	}

	void release_global_submit_lock()
	{
		g_submit_mutex.unlock();
	}

	void destroy_global_resources()
	{
		g_null_texture.reset();
		g_null_image_view .reset();

		if (g_null_sampler)
			vkDestroySampler(g_current_renderer, g_null_sampler, nullptr);

		g_null_sampler = nullptr;
	}

	void set_current_thread_ctx(const vk::context &ctx)
	{
		g_current_vulkan_ctx = (vk::context *)&ctx;
	}

	context *get_current_thread_ctx()
	{
		return g_current_vulkan_ctx;
	}

	vk::render_device *get_current_renderer()
	{
		return &g_current_renderer;
	}

	void set_current_renderer(const vk::render_device &device)
	{
		g_current_renderer = device;

		const std::array<std::string, 8> black_listed = 
		{
			// Black list all polaris unless its proven they dont have a problem with primitive restart
			"RX 580",
			"RX 570",
			"RX 560",
			"RX 550",
			"RX 480",
			"RX 470",
			"RX 460",
			"RX Vega",
		};

		const auto gpu_name = g_current_renderer.gpu().name();
		for (const auto& test : black_listed)
		{
			if (gpu_name.find(test) != std::string::npos)
			{
				g_drv_no_primitive_restart_flag = true;
				break;
			}
		}
	}

	bool emulate_primitive_restart()
	{
		return g_drv_no_primitive_restart_flag;
	}

	void change_image_layout(VkCommandBuffer cmd, VkImage image, VkImageLayout current_layout, VkImageLayout new_layout, VkImageSubresourceRange range)
	{
		//Prepare an image to match the new layout..
		VkImageMemoryBarrier barrier = {};
		barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		barrier.newLayout = new_layout;
		barrier.oldLayout = current_layout;
		barrier.image = image;
		barrier.srcAccessMask = 0;
		barrier.dstAccessMask = 0;
		barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		barrier.subresourceRange = range;

		VkPipelineStageFlags src_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;
		VkPipelineStageFlags dst_stage = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT;

		switch (new_layout)
		{
		case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
			barrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
			dst_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
			break;
		case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
		case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR:
			barrier.dstAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			dst_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
			break;
		case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
			barrier.dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
			dst_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
			break;
		case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
			barrier.dstAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
			dst_stage = VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT;
			break;
		case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
			barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_INPUT_ATTACHMENT_READ_BIT;
			dst_stage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
			break;
		}

		switch (current_layout)
		{
		case VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL:
			barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
			src_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
			break;
		case VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL:
		case VK_IMAGE_LAYOUT_PRESENT_SRC_KHR:
			barrier.srcAccessMask = VK_ACCESS_TRANSFER_READ_BIT;
			src_stage = VK_PIPELINE_STAGE_TRANSFER_BIT;
			break;
		case VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL:
			barrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
			src_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
			break;
		case VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL:
			barrier.srcAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
			src_stage = VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
			break;
		case VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL:
			barrier.srcAccessMask = VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_INPUT_ATTACHMENT_READ_BIT;
			src_stage = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;
			break;
		}

		vkCmdPipelineBarrier(cmd, src_stage, dst_stage, 0, 0, nullptr, 0, nullptr, 1, &barrier);
	}

	void change_image_layout(VkCommandBuffer cmd, vk::image *image, VkImageLayout new_layout, VkImageSubresourceRange range)
	{
		if (image->current_layout == new_layout) return;

		change_image_layout(cmd, image->value, image->current_layout, new_layout, range);
		image->current_layout = new_layout;
	}

	void insert_texture_barrier(VkCommandBuffer cmd, VkImage image, VkImageLayout layout, VkImageSubresourceRange range)
	{
		VkImageMemoryBarrier barrier = {};
		barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
		barrier.newLayout = layout;
		barrier.oldLayout = layout;
		barrier.image = image;
		barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
		barrier.subresourceRange = range;
		barrier.dstAccessMask = VK_ACCESS_SHADER_READ_BIT;

		VkPipelineStageFlags src_stage;
		if (range.aspectMask == VK_IMAGE_ASPECT_COLOR_BIT)
		{
			barrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
			src_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
		}
		else
		{
			barrier.srcAccessMask = VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT;
			src_stage = VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT;
		}

		vkCmdPipelineBarrier(cmd, src_stage, VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT | VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, 0, 0, nullptr, 0, nullptr, 1, &barrier);
	}

	void insert_texture_barrier(VkCommandBuffer cmd, vk::image *image)
	{
		if (image->info.usage & VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT)
		{
			insert_texture_barrier(cmd, image->value, image->current_layout, { VK_IMAGE_ASPECT_DEPTH_BIT, 0, 1, 0, 1 });
		}
		else
		{
			insert_texture_barrier(cmd, image->value, image->current_layout, { VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1 });
		}
	}

	void enter_uninterruptible()
	{
		g_cb_no_interrupt_flag = true;
	}

	void leave_uninterruptible()
	{
		g_cb_no_interrupt_flag = false;
	}

	bool is_uninterruptible()
	{
		return g_cb_no_interrupt_flag;
	}

	void advance_completed_frame_counter()
	{
		g_num_processed_frames++;
	}

	void advance_frame_counter()
	{
		verify(HERE), g_num_processed_frames <= g_num_total_frames;
		g_num_total_frames++;
	}

	const u64 get_current_frame_id()
	{
		return g_num_total_frames;
	}

	const u64 get_last_completed_frame_id()
	{
		return (g_num_processed_frames > 0)? g_num_processed_frames - 1: 0;
	}

	void die_with_error(const char* faulting_addr, VkResult error_code)
	{
		std::string error_message;
		int severity = 0; //0 - die, 1 - warn, 2 - nothing

		switch (error_code)
		{
		case VK_SUCCESS:
		case VK_EVENT_SET:
		case VK_EVENT_RESET:
		case VK_INCOMPLETE:
			return;
		case VK_SUBOPTIMAL_KHR:
			error_message = "Present surface is suboptimal (VK_SUBOPTIMAL_KHR)";
			severity = 1;
			break;
		case VK_NOT_READY:
			error_message = "Device or resource busy (VK_NOT_READY)";
			break;
		case VK_TIMEOUT:
			error_message = "Timeout event (VK_TIMEOUT)";
			break;
		case VK_ERROR_OUT_OF_HOST_MEMORY:
			error_message = "Out of host memory (system RAM) (VK_ERROR_OUT_OF_HOST_MEMORY)";
			break;
		case VK_ERROR_OUT_OF_DEVICE_MEMORY:
			error_message = "Out of video memory (VRAM) (VK_ERROR_OUT_OF_DEVICE_MEMORY)";
			break;
		case VK_ERROR_INITIALIZATION_FAILED:
			error_message = "Initialization failed (VK_ERROR_INITIALIZATION_FAILED)";
			break;
		case VK_ERROR_DEVICE_LOST:
			error_message = "Device lost (Driver crashed with unspecified error or stopped responding and recovered) (VK_ERROR_DEVICE_LOST)";
			break;
		case VK_ERROR_MEMORY_MAP_FAILED:
			error_message = "Memory map failed (VK_ERROR_MEMORY_MAP_FAILED)";
			break;
		case VK_ERROR_LAYER_NOT_PRESENT:
			error_message = "Requested layer is not available (Try disabling debug output or install vulkan SDK) (VK_ERROR_LAYER_NOT_PRESENT)";
			break;
		case VK_ERROR_EXTENSION_NOT_PRESENT:
			error_message = "Requested extension not available (VK_ERROR_EXTENSION_NOT_PRESENT)";
			break;
		case VK_ERROR_FEATURE_NOT_PRESENT:
			error_message = "Requested feature not available (VK_ERROR_FEATURE_NOT_PRESENT)";
			break;
		case VK_ERROR_INCOMPATIBLE_DRIVER:
			error_message = "Incompatible driver (VK_ERROR_INCOMPATIBLE_DRIVER)";
			break;
		case VK_ERROR_TOO_MANY_OBJECTS:
			error_message = "Too many objects created (Out of handles) (VK_ERROR_TOO_MANY_OBJECTS)";
			break;
		case VK_ERROR_FORMAT_NOT_SUPPORTED:
			error_message = "Format not supported (VK_ERROR_FORMAT_NOT_SUPPORTED)";
			break;
		case VK_ERROR_FRAGMENTED_POOL:
			error_message = "Fragmented pool (VK_ERROR_FRAGMENTED_POOL)";
			break;
		case VK_ERROR_SURFACE_LOST_KHR:
			error_message = "Surface lost (VK_ERROR_SURFACE_LOST)";
			break;
		case VK_ERROR_NATIVE_WINDOW_IN_USE_KHR:
			error_message = "Native window in use (VK_ERROR_NATIVE_WINDOW_IN_USE_KHR)";
			break;
		case VK_ERROR_OUT_OF_DATE_KHR:
			error_message = "Present surface is out of date (VK_ERROR_OUT_OF_DATE_KHR)";
			severity = 1;
			break;
		case VK_ERROR_INCOMPATIBLE_DISPLAY_KHR:
			error_message = "Incompatible display (VK_ERROR_INCOMPATIBLE_DISPLAY_KHR)";
			break;
		case VK_ERROR_VALIDATION_FAILED_EXT:
			error_message = "Validation failed (VK_ERROR_INCOMPATIBLE_DISPLAY_KHR)";
			break;
		case VK_ERROR_INVALID_SHADER_NV:
			error_message = "Invalid shader code (VK_ERROR_INVALID_SHADER_NV)";
			break;
		case VK_ERROR_OUT_OF_POOL_MEMORY_KHR:
			error_message = "Out of pool memory (VK_ERROR_OUT_OF_POOL_MEMORY_KHR)";
			break;
		case VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR:
			error_message = "Invalid external handle (VK_ERROR_INVALID_EXTERNAL_HANDLE_KHR)";
			break;
		default:
			error_message = fmt::format("Unknown Code (%Xh, %d)%s", (s32)error_code, (s32&)error_code, faulting_addr);
			break;
		}

		switch (severity)
		{
		case 0:
			fmt::throw_exception("Assertion Failed! Vulkan API call failed with unrecoverable error: %s%s", error_message.c_str(), faulting_addr);
		case 1:
			LOG_ERROR(RSX, "Vulkan API call has failed with an error but will continue: %s%s", error_message.c_str(), faulting_addr);
			break;
		}
	}

	VKAPI_ATTR VkBool32 VKAPI_CALL dbgFunc(VkFlags msgFlags, VkDebugReportObjectTypeEXT objType,
											uint64_t srcObject, size_t location, int32_t msgCode,
											const char *pLayerPrefix, const char *pMsg, void *pUserData)
	{
		if (msgFlags & VK_DEBUG_REPORT_ERROR_BIT_EXT)
		{
			LOG_ERROR(RSX, "ERROR: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
		}
		else if (msgFlags & VK_DEBUG_REPORT_WARNING_BIT_EXT)
		{
			LOG_WARNING(RSX, "WARNING: [%s] Code %d : %s", pLayerPrefix, msgCode, pMsg);
		}
		else
		{
			return false;
		}

		//Let the app crash..
		return false;
	}

	VkBool32 BreakCallback(VkFlags msgFlags, VkDebugReportObjectTypeEXT objType,
							uint64_t srcObject, size_t location, int32_t msgCode,
							const char *pLayerPrefix, const char *pMsg, void *pUserData)
	{
#ifdef _WIN32
		DebugBreak();
#endif

		return false;
	}
}