#include "tr_local.h"
#include "vk.h"

#if defined (_DEBUG)
#if defined (_WIN32)
#define USE_VK_VALIDATION
#include <windows.h> // for win32 debug callback
#endif
#endif

static int vkSamples = VK_SAMPLE_COUNT_1_BIT;
static int vkMaxSamples = VK_SAMPLE_COUNT_1_BIT;

//
// Vulkan API functions used by the renderer.
//
PFN_vkGetInstanceProcAddr						qvkGetInstanceProcAddr;

PFN_vkCreateInstance							qvkCreateInstance;
PFN_vkEnumerateInstanceExtensionProperties		qvkEnumerateInstanceExtensionProperties;

PFN_vkCreateDevice								qvkCreateDevice;
PFN_vkDestroyInstance							qvkDestroyInstance;
PFN_vkEnumerateDeviceExtensionProperties		qvkEnumerateDeviceExtensionProperties;
PFN_vkEnumeratePhysicalDevices					qvkEnumeratePhysicalDevices;
PFN_vkGetDeviceProcAddr							qvkGetDeviceProcAddr;
PFN_vkGetPhysicalDeviceFeatures					qvkGetPhysicalDeviceFeatures;
PFN_vkGetPhysicalDeviceFormatProperties			qvkGetPhysicalDeviceFormatProperties;
PFN_vkGetPhysicalDeviceMemoryProperties			qvkGetPhysicalDeviceMemoryProperties;
PFN_vkGetPhysicalDeviceProperties				qvkGetPhysicalDeviceProperties;
PFN_vkGetPhysicalDeviceQueueFamilyProperties	qvkGetPhysicalDeviceQueueFamilyProperties;
PFN_vkDestroySurfaceKHR							qvkDestroySurfaceKHR;
PFN_vkGetPhysicalDeviceSurfaceCapabilitiesKHR	qvkGetPhysicalDeviceSurfaceCapabilitiesKHR;
PFN_vkGetPhysicalDeviceSurfaceFormatsKHR		qvkGetPhysicalDeviceSurfaceFormatsKHR;
PFN_vkGetPhysicalDeviceSurfacePresentModesKHR	qvkGetPhysicalDeviceSurfacePresentModesKHR;
PFN_vkGetPhysicalDeviceSurfaceSupportKHR		qvkGetPhysicalDeviceSurfaceSupportKHR;
#ifdef USE_VK_VALIDATION
PFN_vkCreateDebugReportCallbackEXT				qvkCreateDebugReportCallbackEXT;
PFN_vkDestroyDebugReportCallbackEXT				qvkDestroyDebugReportCallbackEXT;
#endif
PFN_vkAllocateCommandBuffers					qvkAllocateCommandBuffers;
PFN_vkAllocateDescriptorSets					qvkAllocateDescriptorSets;
PFN_vkAllocateMemory							qvkAllocateMemory;
PFN_vkBeginCommandBuffer						qvkBeginCommandBuffer;
PFN_vkBindBufferMemory							qvkBindBufferMemory;
PFN_vkBindImageMemory							qvkBindImageMemory;
PFN_vkCmdBeginRenderPass						qvkCmdBeginRenderPass;
PFN_vkCmdBindDescriptorSets						qvkCmdBindDescriptorSets;
PFN_vkCmdBindIndexBuffer						qvkCmdBindIndexBuffer;
PFN_vkCmdBindPipeline							qvkCmdBindPipeline;
PFN_vkCmdBindVertexBuffers						qvkCmdBindVertexBuffers;
PFN_vkCmdBlitImage								qvkCmdBlitImage;
PFN_vkCmdClearAttachments						qvkCmdClearAttachments;
PFN_vkCmdCopyBuffer								qvkCmdCopyBuffer;
PFN_vkCmdCopyBufferToImage						qvkCmdCopyBufferToImage;
PFN_vkCmdCopyImage								qvkCmdCopyImage;
PFN_vkCmdDraw									qvkCmdDraw;
PFN_vkCmdDrawIndexed							qvkCmdDrawIndexed;
PFN_vkCmdEndRenderPass							qvkCmdEndRenderPass;
PFN_vkCmdNextSubpass							qvkCmdNextSubpass;
PFN_vkCmdPipelineBarrier						qvkCmdPipelineBarrier;
PFN_vkCmdPushConstants							qvkCmdPushConstants;
PFN_vkCmdSetDepthBias							qvkCmdSetDepthBias;
PFN_vkCmdSetScissor								qvkCmdSetScissor;
PFN_vkCmdSetViewport							qvkCmdSetViewport;
PFN_vkCreateBuffer								qvkCreateBuffer;
PFN_vkCreateCommandPool							qvkCreateCommandPool;
PFN_vkCreateDescriptorPool						qvkCreateDescriptorPool;
PFN_vkCreateDescriptorSetLayout					qvkCreateDescriptorSetLayout;
PFN_vkCreateFence								qvkCreateFence;
PFN_vkCreateFramebuffer							qvkCreateFramebuffer;
PFN_vkCreateGraphicsPipelines					qvkCreateGraphicsPipelines;
PFN_vkCreateImage								qvkCreateImage;
PFN_vkCreateImageView							qvkCreateImageView;
PFN_vkCreatePipelineLayout						qvkCreatePipelineLayout;
PFN_vkCreatePipelineCache						qvkCreatePipelineCache;
PFN_vkCreateRenderPass							qvkCreateRenderPass;
PFN_vkCreateSampler								qvkCreateSampler;
PFN_vkCreateSemaphore							qvkCreateSemaphore;
PFN_vkCreateShaderModule						qvkCreateShaderModule;
PFN_vkDestroyBuffer								qvkDestroyBuffer;
PFN_vkDestroyCommandPool						qvkDestroyCommandPool;
PFN_vkDestroyDescriptorPool						qvkDestroyDescriptorPool;
PFN_vkDestroyDescriptorSetLayout				qvkDestroyDescriptorSetLayout;
PFN_vkDestroyDevice								qvkDestroyDevice;
PFN_vkDestroyFence								qvkDestroyFence;
PFN_vkDestroyFramebuffer						qvkDestroyFramebuffer;
PFN_vkDestroyImage								qvkDestroyImage;
PFN_vkDestroyImageView							qvkDestroyImageView;
PFN_vkDestroyPipeline							qvkDestroyPipeline;
PFN_vkDestroyPipelineCache						qvkDestroyPipelineCache;
PFN_vkDestroyPipelineLayout						qvkDestroyPipelineLayout;
PFN_vkDestroyRenderPass							qvkDestroyRenderPass;
PFN_vkDestroySampler							qvkDestroySampler;
PFN_vkDestroySemaphore							qvkDestroySemaphore;
PFN_vkDestroyShaderModule						qvkDestroyShaderModule;
PFN_vkDeviceWaitIdle							qvkDeviceWaitIdle;
PFN_vkEndCommandBuffer							qvkEndCommandBuffer;
PFN_vkFlushMappedMemoryRanges					qvkFlushMappedMemoryRanges;
PFN_vkFreeCommandBuffers						qvkFreeCommandBuffers;
PFN_vkFreeDescriptorSets						qvkFreeDescriptorSets;
PFN_vkFreeMemory								qvkFreeMemory;
PFN_vkGetBufferMemoryRequirements				qvkGetBufferMemoryRequirements;
PFN_vkGetDeviceQueue							qvkGetDeviceQueue;
PFN_vkGetImageMemoryRequirements				qvkGetImageMemoryRequirements;
PFN_vkGetImageSubresourceLayout					qvkGetImageSubresourceLayout;
PFN_vkInvalidateMappedMemoryRanges				qvkInvalidateMappedMemoryRanges;
PFN_vkMapMemory									qvkMapMemory;
PFN_vkQueueSubmit								qvkQueueSubmit;
PFN_vkQueueWaitIdle								qvkQueueWaitIdle;
PFN_vkResetCommandBuffer						qvkResetCommandBuffer;
PFN_vkResetDescriptorPool						qvkResetDescriptorPool;
PFN_vkResetFences								qvkResetFences;
PFN_vkUnmapMemory								qvkUnmapMemory;
PFN_vkUpdateDescriptorSets						qvkUpdateDescriptorSets;
PFN_vkWaitForFences								qvkWaitForFences;
PFN_vkAcquireNextImageKHR						qvkAcquireNextImageKHR;
PFN_vkCreateSwapchainKHR						qvkCreateSwapchainKHR;
PFN_vkDestroySwapchainKHR						qvkDestroySwapchainKHR;
PFN_vkGetSwapchainImagesKHR						qvkGetSwapchainImagesKHR;
PFN_vkQueuePresentKHR							qvkQueuePresentKHR;

PFN_vkGetBufferMemoryRequirements2KHR			qvkGetBufferMemoryRequirements2KHR;
PFN_vkGetImageMemoryRequirements2KHR			qvkGetImageMemoryRequirements2KHR;

PFN_vkDebugMarkerSetObjectNameEXT				qvkDebugMarkerSetObjectNameEXT;

////////////////////////////////////////////////////////////////////////////

// forward declaration
VkPipeline create_pipeline( const Vk_Pipeline_Def *def, renderPass_t renderPassIndex );

static uint32_t find_memory_type( VkPhysicalDevice physical_device, uint32_t memory_type_bits, VkMemoryPropertyFlags properties ) {
	VkPhysicalDeviceMemoryProperties memory_properties;
	uint32_t i;

	qvkGetPhysicalDeviceMemoryProperties( vk.physical_device, &memory_properties );

	for ( i = 0; i < memory_properties.memoryTypeCount; i++ ) {
		if ((memory_type_bits & (1 << i)) != 0 &&
			(memory_properties.memoryTypes[i].propertyFlags & properties) == properties) {
			return i;
		}
	}
	ri.Error( ERR_FATAL, "Vulkan: failed to find matching memory type with requested properties" );
	return ~0U;
}


static uint32_t find_memory_type2( uint32_t memory_type_bits, VkMemoryPropertyFlags properties, VkMemoryPropertyFlags *outprops ) {
	VkPhysicalDeviceMemoryProperties memory_properties;
	uint32_t i;

	qvkGetPhysicalDeviceMemoryProperties( vk.physical_device, &memory_properties );

	for ( i = 0; i < memory_properties.memoryTypeCount; i++ ) {
		if ( (memory_type_bits & (1 << i)) != 0 && (memory_properties.memoryTypes[i].propertyFlags & properties) == properties ) {
			if ( outprops ) {
				*outprops = memory_properties.memoryTypes[i].propertyFlags;
			}
			return i;
		}
	}

	return ~0U;
}


static const char *pmode_to_str( VkPresentModeKHR mode )
{
	static char buf[32];

	switch ( mode ) {
		case VK_PRESENT_MODE_IMMEDIATE_KHR: return "IMMEDIATE";
		case VK_PRESENT_MODE_MAILBOX_KHR: return "MAILBOX";
		case VK_PRESENT_MODE_FIFO_KHR: return "FIFO";
		case VK_PRESENT_MODE_FIFO_RELAXED_KHR: return "FIFO_RELAXED";
		default: sprintf( buf, "mode#%x", mode ); return buf;
	};
}


#define CASE_STR(x) case (x): return #x

const char *vk_format_string( VkFormat format )
{
	static char buf[16];

	switch ( format ) {
		// color formats
		CASE_STR( VK_FORMAT_R5G5B5A1_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_B5G5R5A1_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_R5G6B5_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_B5G6R5_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_B8G8R8A8_SRGB );
		CASE_STR( VK_FORMAT_R8G8B8A8_SRGB );
		CASE_STR( VK_FORMAT_B8G8R8A8_SNORM );
		CASE_STR( VK_FORMAT_R8G8B8A8_SNORM );
		CASE_STR( VK_FORMAT_B8G8R8A8_UNORM );
		CASE_STR( VK_FORMAT_R8G8B8A8_UNORM );
		CASE_STR( VK_FORMAT_B4G4R4A4_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_R4G4B4A4_UNORM_PACK16 );
		CASE_STR( VK_FORMAT_R16G16B16A16_UNORM );
		CASE_STR( VK_FORMAT_A2B10G10R10_UNORM_PACK32 );
		CASE_STR( VK_FORMAT_A2R10G10B10_UNORM_PACK32 );
		CASE_STR( VK_FORMAT_B10G11R11_UFLOAT_PACK32 );
		// depth formats
		CASE_STR( VK_FORMAT_D16_UNORM );
		CASE_STR( VK_FORMAT_D16_UNORM_S8_UINT );
		CASE_STR( VK_FORMAT_X8_D24_UNORM_PACK32 );
		CASE_STR( VK_FORMAT_D24_UNORM_S8_UINT );
		CASE_STR( VK_FORMAT_D32_SFLOAT );
		CASE_STR( VK_FORMAT_D32_SFLOAT_S8_UINT );
	default:
		Com_sprintf( buf, sizeof( buf ), "#%i", format );
		return buf;
	}
}


static const char *vk_result_string( VkResult code ) {
	static char buffer[32];

	switch ( code ) {
		CASE_STR( VK_SUCCESS );
		CASE_STR( VK_NOT_READY );
		CASE_STR( VK_TIMEOUT );
		CASE_STR( VK_EVENT_SET );
		CASE_STR( VK_EVENT_RESET );
		CASE_STR( VK_INCOMPLETE );
		CASE_STR( VK_ERROR_OUT_OF_HOST_MEMORY );
		CASE_STR( VK_ERROR_OUT_OF_DEVICE_MEMORY );
		CASE_STR( VK_ERROR_INITIALIZATION_FAILED );
		CASE_STR( VK_ERROR_DEVICE_LOST );
		CASE_STR( VK_ERROR_MEMORY_MAP_FAILED );
		CASE_STR( VK_ERROR_LAYER_NOT_PRESENT );
		CASE_STR( VK_ERROR_EXTENSION_NOT_PRESENT );
		CASE_STR( VK_ERROR_FEATURE_NOT_PRESENT );
		CASE_STR( VK_ERROR_INCOMPATIBLE_DRIVER );
		CASE_STR( VK_ERROR_TOO_MANY_OBJECTS );
		CASE_STR( VK_ERROR_FORMAT_NOT_SUPPORTED );
		CASE_STR( VK_ERROR_FRAGMENTED_POOL );
		CASE_STR( VK_ERROR_UNKNOWN );
		CASE_STR( VK_ERROR_OUT_OF_POOL_MEMORY );
		CASE_STR( VK_ERROR_INVALID_EXTERNAL_HANDLE );
		CASE_STR( VK_ERROR_FRAGMENTATION );
		CASE_STR( VK_ERROR_INVALID_OPAQUE_CAPTURE_ADDRESS );
		CASE_STR( VK_ERROR_SURFACE_LOST_KHR );
		CASE_STR( VK_ERROR_NATIVE_WINDOW_IN_USE_KHR );
		CASE_STR( VK_SUBOPTIMAL_KHR );
		CASE_STR( VK_ERROR_OUT_OF_DATE_KHR );
		CASE_STR( VK_ERROR_INCOMPATIBLE_DISPLAY_KHR );
		CASE_STR( VK_ERROR_VALIDATION_FAILED_EXT );
		CASE_STR( VK_ERROR_INVALID_SHADER_NV );
		CASE_STR( VK_ERROR_INVALID_DRM_FORMAT_MODIFIER_PLANE_LAYOUT_EXT );
		CASE_STR( VK_ERROR_NOT_PERMITTED_EXT );
		CASE_STR( VK_ERROR_FULL_SCREEN_EXCLUSIVE_MODE_LOST_EXT );
		CASE_STR( VK_THREAD_IDLE_KHR );
		CASE_STR( VK_THREAD_DONE_KHR );
		CASE_STR( VK_OPERATION_DEFERRED_KHR );
		CASE_STR( VK_OPERATION_NOT_DEFERRED_KHR );
		CASE_STR( VK_PIPELINE_COMPILE_REQUIRED_EXT );
	default:
		sprintf( buffer, "code %i", code );
		return buffer;
	}
}
#undef CASE_STR

#define VK_CHECK( function_call ) { \
	VkResult res = function_call; \
	if ( res < 0 ) { \
		ri.Error( ERR_FATAL, "Vulkan: %s returned %s", #function_call, vk_result_string( res ) ); \
	} \
}


/*
static VkFlags get_composite_alpha( VkCompositeAlphaFlagsKHR flags )
{
	const VkCompositeAlphaFlagBitsKHR compositeFlags[] = {
		VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
		VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR,
		VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR,
		VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR
	};
	int i;

	for ( i = 1; i < ARRAY_LEN( compositeFlags ); i++ ) {
		if ( flags & compositeFlags[i] ) {
			return compositeFlags[i];
		}
	}

	return compositeFlags[0];
}
*/


static VkCommandBuffer begin_command_buffer( void )
{
	VkCommandBufferBeginInfo begin_info;
	VkCommandBufferAllocateInfo alloc_info;
	VkCommandBuffer command_buffer;

	alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.commandPool = vk.command_pool;
	alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
	alloc_info.commandBufferCount = 1;
	VK_CHECK( qvkAllocateCommandBuffers( vk.device, &alloc_info, &command_buffer ) );

	begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	begin_info.pNext = NULL;
	begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
	begin_info.pInheritanceInfo = NULL;

	VK_CHECK( qvkBeginCommandBuffer( command_buffer, &begin_info ) );

	return command_buffer;
}


static void end_command_buffer( VkCommandBuffer command_buffer )
{
	VkSubmitInfo submit_info;
	VkCommandBuffer cmdbuf[1];

	cmdbuf[0] = command_buffer;

	VK_CHECK( qvkEndCommandBuffer( command_buffer ) );

	submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	submit_info.pNext = NULL;
	submit_info.waitSemaphoreCount = 0;
	submit_info.pWaitSemaphores = NULL;
	submit_info.pWaitDstStageMask = NULL;
	submit_info.commandBufferCount = 1;
	submit_info.pCommandBuffers = cmdbuf;
	submit_info.signalSemaphoreCount = 0;
	submit_info.pSignalSemaphores = NULL;

	VK_CHECK( qvkQueueSubmit( vk.queue, 1, &submit_info, VK_NULL_HANDLE ) );
	VK_CHECK( qvkQueueWaitIdle( vk.queue ) );

	qvkFreeCommandBuffers( vk.device, vk.command_pool, 1, cmdbuf );
}


static void record_image_layout_transition(VkCommandBuffer command_buffer, VkImage image, VkImageAspectFlags image_aspect_flags, VkAccessFlags src_access_flags, VkImageLayout old_layout, VkAccessFlags dst_access_flags, VkImageLayout new_layout) {
	VkImageMemoryBarrier barrier;

	barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
	barrier.pNext = NULL;
	barrier.srcAccessMask = src_access_flags;
	barrier.dstAccessMask = dst_access_flags;
	barrier.oldLayout = old_layout;
	barrier.newLayout = new_layout;
	barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.image = image;
	barrier.subresourceRange.aspectMask = image_aspect_flags;
	barrier.subresourceRange.baseMipLevel = 0;
	barrier.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS;
	barrier.subresourceRange.baseArrayLayer = 0;
	barrier.subresourceRange.layerCount = VK_REMAINING_ARRAY_LAYERS;

	qvkCmdPipelineBarrier( command_buffer, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, 0, 0, NULL, 0, NULL, 1, &barrier );
}


// debug markers
#define SET_OBJECT_NAME(obj,objName,objType) vk_set_object_name( (uint64_t)(obj), (objName), (objType) )

static void vk_set_object_name( uint64_t obj, const char *objName, VkDebugReportObjectTypeEXT objType )
{
	if ( qvkDebugMarkerSetObjectNameEXT && obj )
	{
		VkDebugMarkerObjectNameInfoEXT info;
		info.sType = VK_STRUCTURE_TYPE_DEBUG_MARKER_OBJECT_NAME_INFO_EXT;
		info.pNext = NULL;
		info.objectType = objType;
		info.object = obj;
		info.pObjectName = objName;
		qvkDebugMarkerSetObjectNameEXT( vk.device, &info );
	}
}


static void vk_create_swapchain( VkPhysicalDevice physical_device, VkDevice device, VkSurfaceKHR surface, VkSurfaceFormatKHR surface_format, VkSwapchainKHR *swapchain ) {
	VkImageViewCreateInfo view;
	VkSurfaceCapabilitiesKHR surface_caps;
	VkExtent2D image_extent;
	uint32_t present_mode_count, i;
	VkPresentModeKHR present_mode;
	VkPresentModeKHR *present_modes;
	uint32_t image_count;
	VkSwapchainCreateInfoKHR desc;
	qboolean mailbox_supported = qfalse;
	qboolean immediate_supported = qfalse;
	qboolean fifo_relaxed_supported = qfalse;
	int v;

	//physical_device = vk.physical_device;
	//device = vk.device;
	//surface_format = vk.surface_format;
	//swapchain = &vk.swapchain;

	VK_CHECK( qvkGetPhysicalDeviceSurfaceCapabilitiesKHR( physical_device, surface, &surface_caps ) );

	image_extent = surface_caps.currentExtent;
	if ( image_extent.width == 0xffffffff && image_extent.height == 0xffffffff ) {
		image_extent.width = MIN( surface_caps.maxImageExtent.width, MAX( surface_caps.minImageExtent.width, (uint32_t) glConfig.vidWidth ) );
		image_extent.height = MIN( surface_caps.maxImageExtent.height, MAX( surface_caps.minImageExtent.height, (uint32_t) glConfig.vidHeight ) );
	}

	vk.fastSky = qtrue;

	if ( !vk.fboActive ) {
		// VK_IMAGE_USAGE_TRANSFER_DST_BIT is required by image clear operations.
		if ( ( surface_caps.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_DST_BIT ) == 0 ) {
			vk.fastSky = qfalse;
			ri.Printf( PRINT_WARNING, "VK_IMAGE_USAGE_TRANSFER_DST_BIT is not supported by the swapchain\n" );
		}

		// VK_IMAGE_USAGE_TRANSFER_SRC_BIT is required in order to take screenshots.
		if ((surface_caps.supportedUsageFlags & VK_IMAGE_USAGE_TRANSFER_SRC_BIT) == 0) {
			ri.Error(ERR_FATAL, "create_swapchain: VK_IMAGE_USAGE_TRANSFER_SRC_BIT is not supported by the swapchain");
		}
	}

	// determine present mode and swapchain image count
	VK_CHECK(qvkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &present_mode_count, NULL));

	present_modes = (VkPresentModeKHR *) ri.Malloc( present_mode_count * sizeof( VkPresentModeKHR ) );
	VK_CHECK(qvkGetPhysicalDeviceSurfacePresentModesKHR(physical_device, surface, &present_mode_count, present_modes));

	ri.Printf( PRINT_ALL, "...presentation modes:" );
	for ( i = 0; i < present_mode_count; i++ ) {
		ri.Printf( PRINT_ALL, " %s", pmode_to_str( present_modes[i] ) );
		if ( present_modes[i] == VK_PRESENT_MODE_MAILBOX_KHR )
			mailbox_supported = qtrue;
		else if ( present_modes[i] == VK_PRESENT_MODE_IMMEDIATE_KHR )
			immediate_supported = qtrue;
		else if ( present_modes[i] ==  VK_PRESENT_MODE_FIFO_RELAXED_KHR )
			fifo_relaxed_supported = qtrue;

	}
	ri.Printf( PRINT_ALL, "\n" );

	ri.Free( present_modes );

	if ( ( v = ri.Cvar_VariableIntegerValue( "r_swapInterval" ) ) != 0 ) {
		if ( v == 2 && mailbox_supported )
			present_mode = VK_PRESENT_MODE_MAILBOX_KHR;
		else if ( fifo_relaxed_supported )
			present_mode = VK_PRESENT_MODE_FIFO_RELAXED_KHR;
		else
			present_mode = VK_PRESENT_MODE_FIFO_KHR;
		image_count = MAX(MIN_SWAPCHAIN_IMAGES_FIFO, surface_caps.minImageCount);
	} else {
		if ( immediate_supported ) {
			present_mode = VK_PRESENT_MODE_IMMEDIATE_KHR;
			image_count = MAX(MIN_SWAPCHAIN_IMAGES_IMM, surface_caps.minImageCount);
		} else if ( mailbox_supported ) {
			present_mode = VK_PRESENT_MODE_MAILBOX_KHR;
			image_count = MAX(MIN_SWAPCHAIN_IMAGES_MAILBOX, surface_caps.minImageCount);
		} else if ( fifo_relaxed_supported ) {
			present_mode = VK_PRESENT_MODE_FIFO_RELAXED_KHR;
			image_count = MAX(MIN_SWAPCHAIN_IMAGES_FIFO, surface_caps.minImageCount);
		} else {
			present_mode = VK_PRESENT_MODE_FIFO_KHR;
			image_count = MAX(MIN_SWAPCHAIN_IMAGES_FIFO, surface_caps.minImageCount);
		}
		if ( image_count < 2 ) {
			image_count = 2;
		}
	}

	if ( surface_caps.maxImageCount > 0 ) {
		image_count = MIN( MIN( image_count, surface_caps.maxImageCount ), MAX_SWAPCHAIN_IMAGES );
	}

	ri.Printf( PRINT_ALL, "...selected presentation mode: %s, image count: %i\n", pmode_to_str( present_mode ), image_count );

	// create swap chain
	desc.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.surface = surface;
	desc.minImageCount = image_count;
	desc.imageFormat = surface_format.format;
	desc.imageColorSpace = surface_format.colorSpace;
	desc.imageExtent = image_extent;
	desc.imageArrayLayers = 1;
	desc.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
	if ( !vk.fboActive ) {
		desc.imageUsage |= VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
	}
	desc.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
	desc.queueFamilyIndexCount = 0;
	desc.pQueueFamilyIndices = NULL;
	desc.preTransform = surface_caps.currentTransform;
	//desc.compositeAlpha = get_composite_alpha( surface_caps.supportedCompositeAlpha );
	desc.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
	desc.presentMode = present_mode;
	desc.clipped = VK_TRUE;
	desc.oldSwapchain = VK_NULL_HANDLE;

	VK_CHECK( qvkCreateSwapchainKHR( device, &desc, NULL, swapchain ) );

	VK_CHECK( qvkGetSwapchainImagesKHR( vk.device, vk.swapchain, &vk.swapchain_image_count, NULL ) );
	vk.swapchain_image_count = MIN( vk.swapchain_image_count, MAX_SWAPCHAIN_IMAGES );
	VK_CHECK( qvkGetSwapchainImagesKHR( vk.device, vk.swapchain, &vk.swapchain_image_count, vk.swapchain_images ) );

	for ( i = 0; i < vk.swapchain_image_count; i++ ) {

		view.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
		view.pNext = NULL;
		view.flags = 0;
		view.image = vk.swapchain_images[i];
		view.viewType = VK_IMAGE_VIEW_TYPE_2D;
		view.format = vk.present_format.format;
		view.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
		view.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
		view.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
		view.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
		view.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		view.subresourceRange.baseMipLevel = 0;
		view.subresourceRange.levelCount = 1;
		view.subresourceRange.baseArrayLayer = 0;
		view.subresourceRange.layerCount = 1;

		VK_CHECK( qvkCreateImageView( vk.device, &view, NULL, &vk.swapchain_image_views[i] ) );

		SET_OBJECT_NAME( vk.swapchain_images[i], va( "swapchain image %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT );
		SET_OBJECT_NAME( vk.swapchain_image_views[i], va( "swapchain image %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );
	}

	if ( vk.initSwapchainLayout != VK_IMAGE_LAYOUT_UNDEFINED ) {
		VkCommandBuffer command_buffer = begin_command_buffer();

		for ( i = 0; i < vk.swapchain_image_count; i++ ) {
			record_image_layout_transition( command_buffer, vk.swapchain_images[i],
				VK_IMAGE_ASPECT_COLOR_BIT,
				0, VK_IMAGE_LAYOUT_UNDEFINED,
				VK_ACCESS_MEMORY_READ_BIT, vk.initSwapchainLayout );
		}

		end_command_buffer( command_buffer );
	}
}


static void vk_create_render_passes( void )
{
	VkAttachmentDescription attachments[3]; // color | depth | msaa color
	VkAttachmentReference colorResolveRef;
	VkAttachmentReference colorRef0;
	VkAttachmentReference depthRef0;
	VkSubpassDescription subpass;
	VkSubpassDependency deps[2];
	VkRenderPassCreateInfo desc;
	VkFormat depth_format;
	VkDevice device;
	uint32_t i;

	depth_format = vk.depth_format;
	device = vk.device;

	if ( r_fbo->integer == 0 )
	{
		// presentation
		attachments[0].flags = 0;
		attachments[0].format = vk.present_format.format;
		attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
#ifdef USE_BUFFER_CLEAR
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
#else
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;	// Assuming this will be completely overwritten
#endif
		attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;		// needed for presentation
		attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[0].initialLayout = vk.initSwapchainLayout;
		attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
	}
	else
	{
		// resolve/color buffer
		attachments[0].flags = 0;
		attachments[0].format = vk.color_format;
		attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;

#ifdef USE_BUFFER_CLEAR
		if ( vk.msaaActive )
			attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;	// Assuming this will be completely overwritten
		else
			attachments[ 0 ].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
#else
		attachments[ 0 ].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;	// Assuming this will be completely overwritten
#endif

		attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;   // needed for next render pass
		attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[0].initialLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
		attachments[0].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
	}

	// depth buffer
	attachments[1].flags = 0;
	attachments[1].format = depth_format;
	attachments[1].samples = vkSamples;
	attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; // Need empty depth buffer before use
	attachments[1].stencilLoadOp = r_stencilbits->integer ? VK_ATTACHMENT_LOAD_OP_CLEAR : VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	if ( r_bloom->integer ) {
		attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_STORE; // keep it for post-bloom pass
		attachments[1].stencilStoreOp = r_stencilbits->integer ? VK_ATTACHMENT_STORE_OP_STORE : VK_ATTACHMENT_STORE_OP_DONT_CARE;
	} else {
		attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	}
	attachments[1].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;

	colorRef0.attachment = 0;
	colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

	depthRef0.attachment = 1;
	depthRef0.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;

	Com_Memset( &subpass, 0, sizeof( subpass ) );
	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	subpass.colorAttachmentCount = 1;
	subpass.pColorAttachments = &colorRef0;
	subpass.pDepthStencilAttachment = &depthRef0;

	Com_Memset( &desc, 0, sizeof( desc ) );
	desc.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.pAttachments = attachments;
	desc.pSubpasses = &subpass;

	desc.subpassCount = 1;
	desc.attachmentCount = 2;

	if ( vk.msaaActive )
	{
		attachments[2].flags = 0;
		attachments[2].format = vk.color_format;
		attachments[2].samples = vkSamples;
#ifdef USE_BUFFER_CLEAR
		attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
#else
		attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
#endif
		if ( r_bloom->integer ) {
			attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_STORE; // keep it for post-bloom pass
		} else {
			attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE; // Intermediate storage (not written)
		}
		attachments[2].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[2].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[2].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
		attachments[2].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		desc.attachmentCount = 3;

		colorRef0.attachment = 2; // msaa image attachment
		colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		colorResolveRef.attachment = 0; // resolve image attachment
		colorResolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		subpass.pResolveAttachments = &colorResolveRef;
	}

	// subpass dependencies

	Com_Memset( &deps, 0, sizeof( deps ) );

	if ( r_fbo->integer == 0 )
	{
		desc.dependencyCount = 1;
		desc.pDependencies = deps;

		deps[ 0 ].srcSubpass = VK_SUBPASS_EXTERNAL;
		deps[ 0 ].dstSubpass = 0;
		deps[ 0 ].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;	// What pipeline stage is waiting on the dependency
		deps[ 0 ].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;	// What pipeline stage is waiting on the dependency
		deps[ 0 ].srcAccessMask = 0;											// What access scopes are influence the dependency
		deps[ 0 ].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; // What access scopes are waiting on the dependency
		deps[ 0 ].dependencyFlags = 0;

		VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.main ) );
		SET_OBJECT_NAME( vk.render_pass.main, "render pass - main", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );

		return;
	}

	desc.dependencyCount = 2;
	desc.pDependencies = deps;

	deps[0].srcSubpass = VK_SUBPASS_EXTERNAL;
	deps[0].dstSubpass = 0;
	deps[0].srcStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;			// What pipeline stage must have completed for the dependency
	deps[0].dstStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;	// What pipeline stage is waiting on the dependency
	deps[0].srcAccessMask = VK_ACCESS_SHADER_READ_BIT;						// What access scopes are influence the dependency
	deps[0].dstAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; // What access scopes are waiting on the dependency
	deps[0].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;					// Only need the current fragment (or tile) synchronized, not the whole framebuffer

	deps[1].srcSubpass = 0;
	deps[1].dstSubpass = VK_SUBPASS_EXTERNAL;
	deps[1].srcStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;	// Fragment data has been written
	deps[1].dstStageMask = VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT;			// Don't start shading until data is available
	deps[1].srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT; // Waiting for color data to be written
	deps[1].dstAccessMask = VK_ACCESS_SHADER_READ_BIT;						// Don't read things from the shader before ready
	deps[1].dependencyFlags = VK_DEPENDENCY_BY_REGION_BIT;					// Only need the current fragment (or tile) synchronized, not the whole framebuffer

	VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.main ) );
	SET_OBJECT_NAME( vk.render_pass.main, "render pass - main", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );

	if ( r_bloom->integer ) {

		// post-bloom pass
		// color buffer
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD; // load from previous pass
		 // depth buffer
		attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
		attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
		attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		if ( vk.msaaActive ) {
			// msaa render target
			attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
			attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		}
		VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.post_bloom ) );
		SET_OBJECT_NAME( vk.render_pass.post_bloom, "render pass - post_bloom", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );

		// bloom extraction, using resolved/main fbo as a source
		desc.attachmentCount = 1;

		colorRef0.attachment = 0;
		colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		Com_Memset( &subpass, 0, sizeof( subpass ) );
		subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
		subpass.colorAttachmentCount = 1;
		subpass.pColorAttachments = &colorRef0;

		attachments[0].flags = 0;
		attachments[0].format = vk.bloom_format;
		attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;	// Assuming this will be completely overwritten
		attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;		// needed for next render pass
		attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[0].initialLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
		attachments[0].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

		VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.bloom_extract ) );
		SET_OBJECT_NAME( vk.render_pass.bloom_extract, "render pass - bloom_extract", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );

		for ( i = 0; i < ARRAY_LEN( vk.render_pass.blur ); i++ )
		{
			VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.blur[i] ) );
			SET_OBJECT_NAME( vk.render_pass.blur[i], va( "render pass - blur %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );
		}
	}

	// capture render pass
	if ( vk.capture.image )
	{
		Com_Memset( &subpass, 0, sizeof( subpass ) );

		attachments[0].flags = 0;
		attachments[0].format = vk.capture_format;
		attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; // this will be completely overwritten
		attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;   // needed for next render pass
		attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[0].initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
		attachments[0].finalLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;

		colorRef0.attachment = 0;
		colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
		subpass.colorAttachmentCount = 1;
		subpass.pColorAttachments = &colorRef0;

		desc.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.pAttachments = attachments;
		desc.attachmentCount = 1;
		desc.pSubpasses = &subpass;
		desc.subpassCount = 1;

		VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.capture ) );
		SET_OBJECT_NAME( vk.render_pass.capture, "render pass - capture", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );
	}

	colorRef0.attachment = 0;
	colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

	desc.attachmentCount = 1;

	Com_Memset( &subpass, 0, sizeof( subpass ) );
	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	subpass.colorAttachmentCount = 1;
	subpass.pColorAttachments = &colorRef0;

	// gamma post-processing
	attachments[0].flags = 0;
	attachments[0].format = vk.present_format.format;
	attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
	attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE; // needed for presentation
	attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	attachments[0].initialLayout = vk.initSwapchainLayout;
	attachments[0].finalLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;

	VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.gamma ) );

	SET_OBJECT_NAME( vk.render_pass.gamma, "render pass - gamma", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );

	// screenmap

	// resolve/color buffer
	attachments[0].flags = 0;
	attachments[0].format = vk.color_format;
	attachments[0].samples = VK_SAMPLE_COUNT_1_BIT;
#ifdef USE_BUFFER_CLEAR
	if ( vk.screenMapSamples > VK_SAMPLE_COUNT_1_BIT )
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	else
		attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
#else
	attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE; // Assuming this will be completely overwritten
#endif
	attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_STORE;   // needed for next render pass
	attachments[0].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
	attachments[0].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	attachments[0].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
	attachments[0].finalLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

	// depth buffer
	attachments[1].flags = 0;
	attachments[1].format = depth_format;
	attachments[1].samples = vk.screenMapSamples;
	attachments[1].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR; // Need empty depth buffer before use
	attachments[1].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	attachments[1].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
	attachments[1].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
	attachments[1].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
	attachments[1].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;

	colorRef0.attachment = 0;
	colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

	depthRef0.attachment = 1;
	depthRef0.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;

	Com_Memset( &subpass, 0, sizeof( subpass ) );
	subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
	subpass.colorAttachmentCount = 1;
	subpass.pColorAttachments = &colorRef0;
	subpass.pDepthStencilAttachment = &depthRef0;

	Com_Memset( &desc, 0, sizeof( desc ) );
	desc.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.pAttachments = attachments;
	desc.pSubpasses = &subpass;
	desc.subpassCount = 1;
	desc.attachmentCount = 2;
	desc.dependencyCount = 2;
	desc.pDependencies = deps;

	if ( vk.screenMapSamples > VK_SAMPLE_COUNT_1_BIT ) {

		attachments[2].flags = 0;
		attachments[2].format = vk.color_format;
		attachments[2].samples = vk.screenMapSamples;
#ifdef USE_BUFFER_CLEAR
		attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
#else
		attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
#endif
		attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[2].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
		attachments[2].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
		attachments[2].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
		attachments[2].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		desc.attachmentCount = 3;

		colorRef0.attachment = 2; // msaa image attachment
		colorRef0.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		colorResolveRef.attachment = 0; // resolve image attachment
		colorResolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;

		subpass.pResolveAttachments = &colorResolveRef;
	}

	VK_CHECK( qvkCreateRenderPass( device, &desc, NULL, &vk.render_pass.screenmap ) );

	SET_OBJECT_NAME( vk.render_pass.screenmap, "render pass - screenmap", VK_DEBUG_REPORT_OBJECT_TYPE_RENDER_PASS_EXT );
}


static void allocate_and_bind_image_memory(VkImage image) {
	VkMemoryRequirements memory_requirements;
	VkDeviceSize alignment;
	ImageChunk *chunk;
	int i;

	qvkGetImageMemoryRequirements(vk.device, image, &memory_requirements);

	if ( memory_requirements.size > vk.image_chunk_size ) {
		ri.Error( ERR_FATAL, "Vulkan: could not allocate memory, image is too large (%ikbytes).",
			(int)(memory_requirements.size/1024) );
	}

	chunk = NULL;

	// Try to find an existing chunk of sufficient capacity.
	alignment = memory_requirements.alignment;
	for ( i = 0; i < vk_world.num_image_chunks; i++ ) {
		// ensure that memory region has proper alignment
		VkDeviceSize offset = PAD( vk_world.image_chunks[i].used, alignment );

		if ( offset + memory_requirements.size <= vk.image_chunk_size ) {
			chunk = &vk_world.image_chunks[i];
			chunk->used = offset + memory_requirements.size;
			break;
		}
	}

	// Allocate a new chunk in case we couldn't find suitable existing chunk.
	if (chunk == NULL) {
		VkMemoryAllocateInfo alloc_info;
		VkDeviceMemory memory;

		if (vk_world.num_image_chunks >= MAX_IMAGE_CHUNKS) {
			ri.Error(ERR_FATAL, "Vulkan: image chunk limit has been reached" );
		}

		alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
		alloc_info.pNext = NULL;
		alloc_info.allocationSize = vk.image_chunk_size;
		alloc_info.memoryTypeIndex = find_memory_type(vk.physical_device, memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);

		VK_CHECK(qvkAllocateMemory(vk.device, &alloc_info, NULL, &memory));

		chunk = &vk_world.image_chunks[vk_world.num_image_chunks];
		chunk->memory = memory;
		chunk->used = memory_requirements.size;

		SET_OBJECT_NAME( memory, va( "image memory chunk %i", vk_world.num_image_chunks ), VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT );

		vk_world.num_image_chunks++;
	}

	VK_CHECK(qvkBindImageMemory(vk.device, image, chunk->memory, chunk->used - memory_requirements.size));
}


static void ensure_staging_buffer_allocation(VkDeviceSize size) {
	VkBufferCreateInfo buffer_desc;
	VkMemoryRequirements memory_requirements;
	VkMemoryAllocateInfo alloc_info;
	uint32_t memory_type;
	void *data;

	if (vk_world.staging_buffer_size >= size)
		return;

	if (vk_world.staging_buffer != VK_NULL_HANDLE)
		qvkDestroyBuffer(vk.device, vk_world.staging_buffer, NULL);

	if (vk_world.staging_buffer_memory != VK_NULL_HANDLE)
		qvkFreeMemory(vk.device, vk_world.staging_buffer_memory, NULL);

	vk_world.staging_buffer_size = size;

	buffer_desc.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	buffer_desc.pNext = NULL;
	buffer_desc.flags = 0;
	buffer_desc.size = size;
	buffer_desc.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
	buffer_desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	buffer_desc.queueFamilyIndexCount = 0;
	buffer_desc.pQueueFamilyIndices = NULL;
	VK_CHECK(qvkCreateBuffer(vk.device, &buffer_desc, NULL, &vk_world.staging_buffer));

	qvkGetBufferMemoryRequirements(vk.device, vk_world.staging_buffer, &memory_requirements);

	memory_type = find_memory_type(vk.physical_device, memory_requirements.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = memory_requirements.size;
	alloc_info.memoryTypeIndex = memory_type;

	VK_CHECK(qvkAllocateMemory(vk.device, &alloc_info, NULL, &vk_world.staging_buffer_memory));
	VK_CHECK(qvkBindBufferMemory(vk.device, vk_world.staging_buffer, vk_world.staging_buffer_memory, 0));

	VK_CHECK(qvkMapMemory(vk.device, vk_world.staging_buffer_memory, 0, VK_WHOLE_SIZE, 0, &data));
	vk_world.staging_buffer_ptr = (byte*)data;

	SET_OBJECT_NAME( vk_world.staging_buffer, "staging buffer", VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT );
	SET_OBJECT_NAME( vk_world.staging_buffer_memory, "staging buffer memory", VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT );
}


#ifdef USE_VK_VALIDATION
static VKAPI_ATTR VkBool32 VKAPI_CALL debug_callback(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT object_type, uint64_t object, size_t location,
	int32_t message_code, const char* layer_prefix, const char* message, void* user_data) {
#ifdef _WIN32
	MessageBoxA( 0, message, layer_prefix, MB_ICONWARNING );
	OutputDebugString(message);
	OutputDebugString("\n");
	DebugBreak();
#endif
	return VK_FALSE;
}
#endif


static qboolean used_instance_extension( const char *ext )
{
	const char *u;

	// allow all VK_*_surface extensions
	u = strrchr( ext, '_' );
	if ( u && Q_stricmp( u + 1, "surface" ) == 0 )
		return qtrue;

	if ( Q_stricmp( ext, VK_KHR_SWAPCHAIN_EXTENSION_NAME ) == 0 )
		return qtrue;

#ifdef USE_VK_VALIDATION
	if ( Q_stricmp( ext, VK_EXT_DEBUG_REPORT_EXTENSION_NAME ) == 0 )
		return qtrue;
#endif

	if ( Q_stricmp( ext, VK_EXT_DEBUG_UTILS_EXTENSION_NAME ) == 0 )
		return qtrue;

	return qfalse;
}


static void create_instance( void )
{
#ifdef USE_VK_VALIDATION
	const char* validation_layer_name = "VK_LAYER_LUNARG_standard_validation";
	const char* validation_layer_name2 = "VK_LAYER_KHRONOS_validation";
#endif
	VkInstanceCreateInfo desc;
	VkExtensionProperties *extension_properties;
	VkResult res;
	const char **extension_names, *ext;
	uint32_t i, n, count, extension_count;

	count = 0;
	extension_count = 0;
	VK_CHECK(qvkEnumerateInstanceExtensionProperties(NULL, &count, NULL));

	extension_properties = (VkExtensionProperties *)ri.Malloc(sizeof(VkExtensionProperties) * count);
	extension_names = (const char**)ri.Malloc(sizeof(char *) * count);

	VK_CHECK( qvkEnumerateInstanceExtensionProperties( NULL, &count, extension_properties ) );
	for ( i = 0; i < count; i++ ) {
		ext = extension_properties[i].extensionName;
		if ( !used_instance_extension( ext ) ) {
			continue;
		}
		for ( n = 0; n < extension_count; n++ ) {
			if ( Q_stricmp( ext, extension_names[ n ] ) == 0 ) {
				break;
			}
		}
		if ( n != extension_count ) {
			continue; // skip duplicate
		}
		extension_names[ extension_count++ ] = ext;
	}

	// create instance
	desc.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.pApplicationInfo = NULL;
	desc.enabledExtensionCount = extension_count;
	desc.ppEnabledExtensionNames = extension_names;

#ifdef USE_VK_VALIDATION
	desc.enabledLayerCount = 1;
	desc.ppEnabledLayerNames = &validation_layer_name;

	res = qvkCreateInstance( &desc, NULL, &vk.instance );

	if ( res == VK_ERROR_LAYER_NOT_PRESENT ) {

		desc.enabledLayerCount = 1;
		desc.ppEnabledLayerNames = &validation_layer_name2;

		res = qvkCreateInstance( &desc, NULL, &vk.instance );

		if ( res == VK_ERROR_LAYER_NOT_PRESENT ) {

			ri.Printf( PRINT_WARNING, "...validation layer is not available\n" );

			// try without validation layer
			desc.enabledLayerCount = 0;
			desc.ppEnabledLayerNames = NULL;

			res = qvkCreateInstance( &desc, NULL, &vk.instance );
		}
	}
#else
	desc.enabledLayerCount = 0;
	desc.ppEnabledLayerNames = NULL;

	res = qvkCreateInstance( &desc, NULL, &vk.instance );
#endif

	ri.Free( (void*)extension_names );
	ri.Free( extension_properties );

	if ( res != VK_SUCCESS ) {
		ri.Error( ERR_FATAL, "Vulkan: instance creation failed with %s", vk_result_string( res ) );
	}
}


static VkFormat get_depth_format( VkPhysicalDevice physical_device ) {
	VkFormatProperties props;
	VkFormat formats[2];
	int i;

	if (r_stencilbits->integer > 0) {
		formats[0] = glConfig.depthBits == 16 ? VK_FORMAT_D16_UNORM_S8_UINT : VK_FORMAT_D24_UNORM_S8_UINT;
		formats[1] = VK_FORMAT_D32_SFLOAT_S8_UINT;
		glConfig.stencilBits = 8;
	} else {
		formats[0] = glConfig.depthBits == 16 ? VK_FORMAT_D16_UNORM : VK_FORMAT_X8_D24_UNORM_PACK32;
		formats[1] = VK_FORMAT_D32_SFLOAT;
		glConfig.stencilBits = 0;
	}
	for ( i = 0; i < ARRAY_LEN( formats ); i++ ) {
		qvkGetPhysicalDeviceFormatProperties( physical_device, formats[i], &props );
		if ( ( props.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT ) != 0 ) {
			return formats[i];
		}
	}

	ri.Error( ERR_FATAL, "get_depth_format: failed to find depth attachment format" );
	return VK_FORMAT_UNDEFINED; // never get here
}


// Check if we can use vkCmdBlitImage for the given source and destination image formats.
static qboolean vk_blit_enabled( VkPhysicalDevice physical_device, const VkFormat srcFormat, const VkFormat dstFormat )
{
	VkFormatProperties formatProps;

	qvkGetPhysicalDeviceFormatProperties( physical_device, srcFormat, &formatProps );
	if ( ( formatProps.optimalTilingFeatures & VK_FORMAT_FEATURE_BLIT_SRC_BIT ) == 0 ) {
		return qfalse;
	}

	qvkGetPhysicalDeviceFormatProperties( physical_device, dstFormat, &formatProps );
	if ( ( formatProps.linearTilingFeatures & VK_FORMAT_FEATURE_BLIT_DST_BIT ) == 0 ) {
		return qfalse;
	}

	return qtrue;
}


static VkFormat get_hdr_format( VkFormat base_format )
{
	if ( r_fbo->integer == 0 ) {
		return base_format;
	}

	switch ( r_hdr->integer ) {
		case -1: return VK_FORMAT_B4G4R4A4_UNORM_PACK16;
		case 1: return VK_FORMAT_R16G16B16A16_UNORM;
		default: return base_format;
	}
}

typedef struct {
	int bits;
	VkFormat rgb;
	VkFormat bgr;
} present_format_t;

static const present_format_t present_formats[] = {
	//{12, VK_FORMAT_B4G4R4A4_UNORM_PACK16, VK_FORMAT_R4G4B4A4_UNORM_PACK16},
	//{15, VK_FORMAT_B5G5R5A1_UNORM_PACK16, VK_FORMAT_R5G5B5A1_UNORM_PACK16},
	{16, VK_FORMAT_B5G6R5_UNORM_PACK16, VK_FORMAT_R5G6B5_UNORM_PACK16},
	{24, VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM},
	{30, VK_FORMAT_A2B10G10R10_UNORM_PACK32, VK_FORMAT_A2R10G10B10_UNORM_PACK32},
	//{32, VK_FORMAT_B10G11R11_UFLOAT_PACK32, VK_FORMAT_B10G11R11_UFLOAT_PACK32}
};

static void get_present_format( int present_bits, VkFormat *bgr, VkFormat *rgb ) {
	const present_format_t *pf, *sel;
	int i;

	sel = NULL;
	pf = present_formats;
	for ( i = 0; i < ARRAY_LEN( present_formats ); i++, pf++ ) {
		if ( pf->bits <= present_bits  ) {
			sel = pf;
		}
	}
	if ( !sel ) {
		*bgr = VK_FORMAT_B8G8R8A8_UNORM;
		*rgb = VK_FORMAT_R8G8B8A8_UNORM;
	} else {
		*bgr = sel->bgr;
		*rgb = sel->rgb;
	}
}


static qboolean vk_select_surface_format( VkPhysicalDevice physical_device, VkSurfaceKHR surface )
{
	VkFormat base_bgr, base_rgb;
	VkFormat ext_bgr, ext_rgb;
	VkSurfaceFormatKHR *candidates;
	uint32_t format_count;
	VkResult res;

	res = qvkGetPhysicalDeviceSurfaceFormatsKHR( physical_device, surface, &format_count, NULL );
	if ( res < 0 ) {
		ri.Printf( PRINT_ERROR, "vkGetPhysicalDeviceSurfaceFormatsKHR returned %s\n", vk_result_string( res ) );
		return qfalse;
	}

	if ( format_count == 0 ) {
		ri.Printf( PRINT_ERROR, "...no surface formats found\n" );
		return qfalse;
	}

	candidates = (VkSurfaceFormatKHR*)ri.Malloc( format_count * sizeof(VkSurfaceFormatKHR) );

	VK_CHECK( qvkGetPhysicalDeviceSurfaceFormatsKHR( physical_device, surface, &format_count, candidates ) );

	get_present_format( 24, &base_bgr, &base_rgb );

	if ( r_fbo->integer ) {
		get_present_format( r_presentBits->integer, &ext_bgr, &ext_rgb );
	} else {
		ext_bgr = base_bgr;
		ext_rgb = base_rgb;
	}

	if ( format_count == 1 && candidates[0].format == VK_FORMAT_UNDEFINED ) {
		// special case that means we can choose any format
		vk.base_format.format = base_bgr;
		vk.base_format.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
		vk.present_format.format = ext_bgr;
		vk.present_format.colorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
	}
	else {
		uint32_t i;
		for ( i = 0; i < format_count; i++ ) {
			if ( ( candidates[i].format == base_bgr || candidates[i].format == base_rgb ) && candidates[i].colorSpace == VK_COLORSPACE_SRGB_NONLINEAR_KHR ) {
				vk.base_format = candidates[i];
				break;
			}
		}
		if ( i == format_count ) {
			vk.base_format = candidates[0];
		}
		for ( i = 0; i < format_count; i++ ) {
			if ( ( candidates[i].format == ext_bgr || candidates[i].format == ext_rgb ) && candidates[i].colorSpace == VK_COLORSPACE_SRGB_NONLINEAR_KHR ) {
				vk.present_format = candidates[i];
				break;
			}
		}
		if ( i == format_count ) {
			vk.present_format = vk.base_format;
		}
	}

	if ( !r_fbo->integer ) {
		vk.present_format = vk.base_format;
	}

	ri.Free( candidates );

	return qtrue;
}


static void setup_surface_formats( VkPhysicalDevice physical_device )
{
	vk.depth_format = get_depth_format( physical_device );

	vk.color_format = get_hdr_format( vk.base_format.format );

	vk.capture_format = VK_FORMAT_R8G8B8A8_UNORM;

	vk.bloom_format = vk.base_format.format;

	vk.blitEnabled = vk_blit_enabled( physical_device, vk.color_format, vk.capture_format );

	if ( !vk.blitEnabled )
	{
		vk.capture_format = vk.color_format;
	}
}


static const char *renderer_name( const VkPhysicalDeviceProperties *props ) {
	static char buf[sizeof( props->deviceName ) + 64];
	const char *device_type;

	switch ( props->deviceType ) {
		case VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU: device_type = "Integrated"; break;
		case VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU: device_type = "Discrete"; break;
		case VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU: device_type = "Virtual"; break;
		case VK_PHYSICAL_DEVICE_TYPE_CPU: device_type = "CPU"; break;
		default: device_type = "OTHER"; break;
	}

	Com_sprintf( buf, sizeof( buf ), "%s %s, 0x%04x",
		device_type, props->deviceName, props->deviceID );

	return buf;
}


static qboolean vk_create_device( VkPhysicalDevice physical_device, int device_index ) {

	ri.Printf( PRINT_ALL, "...selected physical device: %i\n", device_index );

	// select surface format
	if ( !vk_select_surface_format( physical_device, vk.surface ) ) {
		return qfalse;
	}

	setup_surface_formats( physical_device );

	// select queue family
	{
		VkQueueFamilyProperties *queue_families;
		uint32_t queue_family_count;
		uint32_t i;

		qvkGetPhysicalDeviceQueueFamilyProperties( physical_device, &queue_family_count, NULL );
		queue_families = (VkQueueFamilyProperties*)ri.Malloc( queue_family_count * sizeof( VkQueueFamilyProperties ) );
		qvkGetPhysicalDeviceQueueFamilyProperties( physical_device, &queue_family_count, queue_families );

		// select queue family with presentation and graphics support
		vk.queue_family_index = ~0U;
		for (i = 0; i < queue_family_count; i++) {
			VkBool32 presentation_supported;
			VK_CHECK( qvkGetPhysicalDeviceSurfaceSupportKHR( physical_device, i, vk.surface, &presentation_supported ) );

			if (presentation_supported && (queue_families[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) != 0) {
				vk.queue_family_index = i;
				break;
			}
		}

		ri.Free( queue_families );

		if ( vk.queue_family_index == ~0U ) {
			ri.Printf( PRINT_ERROR, "...failed to find graphics queue family\n" );

			return qfalse;
		}
	}

	// create VkDevice
	{
		const char *device_extension_list[4];
		uint32_t device_extension_count;
		const char *ext, *end;
		char *str;
		const float priority = 1.0;
		VkExtensionProperties *extension_properties;
		VkDeviceQueueCreateInfo queue_desc;
		VkPhysicalDeviceFeatures device_features;
		VkPhysicalDeviceFeatures features;
		VkDeviceCreateInfo device_desc;
		VkResult res;
		qboolean swapchainSupported = qfalse;
		qboolean dedicatedAllocation = qfalse;
		qboolean memoryRequirements2 = qfalse;
		qboolean debugMarker = qfalse;
		uint32_t i, len, count = 0;

		VK_CHECK( qvkEnumerateDeviceExtensionProperties( physical_device, NULL, &count, NULL ) );
		extension_properties = (VkExtensionProperties*)ri.Malloc( count * sizeof( VkExtensionProperties ) );
		VK_CHECK( qvkEnumerateDeviceExtensionProperties( physical_device, NULL, &count, extension_properties ) );

		// fill glConfig.extensions_string
		str = glConfig.extensions_string; *str = '\0';
		end = &glConfig.extensions_string[ sizeof( glConfig.extensions_string ) - 1];

		for ( i = 0; i < count; i++ ) {
			ext = extension_properties[i].extensionName;
			if ( strcmp( ext, VK_KHR_SWAPCHAIN_EXTENSION_NAME ) == 0 ) {
				swapchainSupported = qtrue;
			} else if ( strcmp( ext, VK_KHR_DEDICATED_ALLOCATION_EXTENSION_NAME ) == 0 ) {
				dedicatedAllocation = qtrue;
			} else if ( strcmp( ext, VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME ) == 0 ) {
				memoryRequirements2 = qtrue;
			} else if ( strcmp( ext, VK_EXT_DEBUG_MARKER_EXTENSION_NAME ) == 0 ) {
				debugMarker = qtrue;
			}
			// add this device extension to glConfig
			if ( i != 0 ) {
				if ( str + 1 >= end )
					continue;
				str = Q_stradd( str, " " );
			}
			len = (uint32_t)strlen( ext );
			if ( str + len >= end )
				continue;
			str = Q_stradd( str, ext );
		}

		ri.Free( extension_properties );

		device_extension_count = 0;

		if ( !swapchainSupported ) {
			ri.Printf( PRINT_ERROR, "...required device extension is not available: %s\n", VK_KHR_SWAPCHAIN_EXTENSION_NAME );
			return qfalse;
		}

		if ( !memoryRequirements2 )
			dedicatedAllocation = qfalse;
		else
			vk.dedicatedAllocation = dedicatedAllocation;

#ifndef USE_DEDICATED_ALLOCATION
		vk.dedicatedAllocation = qfalse;
#endif

		device_extension_list[ device_extension_count++ ] = VK_KHR_SWAPCHAIN_EXTENSION_NAME;

		if ( vk.dedicatedAllocation ) {
			device_extension_list[ device_extension_count++ ] = VK_KHR_DEDICATED_ALLOCATION_EXTENSION_NAME;
			device_extension_list[ device_extension_count++ ] = VK_KHR_GET_MEMORY_REQUIREMENTS_2_EXTENSION_NAME;
		}

		if ( debugMarker ) {
			device_extension_list[ device_extension_count++ ] = VK_EXT_DEBUG_MARKER_EXTENSION_NAME;
			vk.debugMarkers = qtrue;
		}

		qvkGetPhysicalDeviceFeatures( physical_device, &device_features );

		if ( device_features.fillModeNonSolid == VK_FALSE ) {
			ri.Printf( PRINT_ERROR, "...fillModeNonSolid feature is not supported\n" );
			return qfalse;
		}

		queue_desc.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
		queue_desc.pNext = NULL;
		queue_desc.flags = 0;
		queue_desc.queueFamilyIndex = vk.queue_family_index;
		queue_desc.queueCount = 1;
		queue_desc.pQueuePriorities = &priority;

		Com_Memset( &features, 0, sizeof( features ) );
		features.fillModeNonSolid = VK_TRUE;

		if ( device_features.wideLines ) { // needed for RB_SurfaceAxis
			features.wideLines = VK_TRUE;
			vk.wideLines = qtrue;
		}

		if ( device_features.fragmentStoresAndAtomics ) {
			features.fragmentStoresAndAtomics = VK_TRUE;
			vk.fragmentStores = qtrue;
		}

		if ( r_ext_texture_filter_anisotropic->integer && device_features.samplerAnisotropy ) {
			features.samplerAnisotropy = VK_TRUE;
			vk.samplerAnisotropy = qtrue;
		}

		device_desc.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
		device_desc.pNext = NULL;
		device_desc.flags = 0;
		device_desc.queueCreateInfoCount = 1;
		device_desc.pQueueCreateInfos = &queue_desc;
		device_desc.enabledLayerCount = 0;
		device_desc.ppEnabledLayerNames = NULL;
		device_desc.enabledExtensionCount = device_extension_count;
		device_desc.ppEnabledExtensionNames = device_extension_list;
		device_desc.pEnabledFeatures = &features;

		res = qvkCreateDevice( physical_device, &device_desc, NULL, &vk.device );
		if ( res < 0 ) {
			ri.Printf( PRINT_ERROR, "vkCreateDevice returned %s\n", vk_result_string( res ) );
			return qfalse;
		}
	}

	return qtrue;
}


#define INIT_INSTANCE_FUNCTION(func) \
	q##func = /*(PFN_ ## func)*/ ri.VK_GetInstanceProcAddr(vk.instance, #func); \
	if (q##func == NULL) {											\
		ri.Error(ERR_FATAL, "Failed to find entrypoint %s", #func);	\
	}

#define INIT_INSTANCE_FUNCTION_EXT(func) \
	q##func = /*(PFN_ ## func)*/ ri.VK_GetInstanceProcAddr(vk.instance, #func);


#define INIT_DEVICE_FUNCTION(func) \
	q##func = (PFN_ ## func) qvkGetDeviceProcAddr(vk.device, #func);\
	if (q##func == NULL) {											\
		ri.Error(ERR_FATAL, "Failed to find entrypoint %s", #func);	\
	}

#define INIT_DEVICE_FUNCTION_EXT(func) \
	q##func = (PFN_ ## func) qvkGetDeviceProcAddr(vk.device, #func);


static void init_vulkan_library( void )
{
	VkPhysicalDeviceProperties props;
	VkPhysicalDevice *physical_devices;
	uint32_t device_count;
	int device_index, i;
	VkResult res;

	Com_Memset( &vk, 0, sizeof( vk ) );

	//
	// Get functions that do not depend on VkInstance (vk.instance == nullptr at this point).
	//
	INIT_INSTANCE_FUNCTION(vkCreateInstance)
	INIT_INSTANCE_FUNCTION(vkEnumerateInstanceExtensionProperties)

	//
	// Get instance level functions.
	//
	create_instance();

	INIT_INSTANCE_FUNCTION(vkCreateDevice)
	INIT_INSTANCE_FUNCTION(vkDestroyInstance)
	INIT_INSTANCE_FUNCTION(vkEnumerateDeviceExtensionProperties)
	INIT_INSTANCE_FUNCTION(vkEnumeratePhysicalDevices)
	INIT_INSTANCE_FUNCTION(vkGetDeviceProcAddr)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceFeatures)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceFormatProperties)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceMemoryProperties)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceProperties)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceQueueFamilyProperties)
	INIT_INSTANCE_FUNCTION(vkDestroySurfaceKHR)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceSurfaceCapabilitiesKHR)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceSurfaceFormatsKHR)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceSurfacePresentModesKHR)
	INIT_INSTANCE_FUNCTION(vkGetPhysicalDeviceSurfaceSupportKHR)

#ifdef USE_VK_VALIDATION
	INIT_INSTANCE_FUNCTION_EXT(vkCreateDebugReportCallbackEXT)
	INIT_INSTANCE_FUNCTION_EXT(vkDestroyDebugReportCallbackEXT)

	//
	// Create debug callback.
	//
	if ( qvkCreateDebugReportCallbackEXT && qvkDestroyDebugReportCallbackEXT )
	{
		VkDebugReportCallbackCreateInfoEXT desc;
		desc.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
		desc.pNext = NULL;
		desc.flags = VK_DEBUG_REPORT_WARNING_BIT_EXT |
					 VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT |
					 VK_DEBUG_REPORT_ERROR_BIT_EXT;
		desc.pfnCallback = &debug_callback;
		desc.pUserData = NULL;

		VK_CHECK(qvkCreateDebugReportCallbackEXT(vk.instance, &desc, NULL, &vk.debug_callback));
	}
#endif

	// create surface
	if ( !ri.VK_CreateSurface( vk.instance, &vk.surface ) ) {
		ri.Error( ERR_FATAL, "Error creating Vulkan surface" );
		return;
	}

	res = qvkEnumeratePhysicalDevices( vk.instance, &device_count, NULL );
	if ( device_count == 0 ) {
		ri.Error( ERR_FATAL, "Vulkan: no physical devices found" );
		return;
	}
	else if ( res < 0 ) {
		ri.Error( ERR_FATAL, "vkEnumeratePhysicalDevices returned %s", vk_result_string( res ) );
		return;
	}

	physical_devices = (VkPhysicalDevice*)ri.Malloc( device_count * sizeof( VkPhysicalDevice ) );
	VK_CHECK( qvkEnumeratePhysicalDevices( vk.instance, &device_count, physical_devices ) );

	// initial physical device index
	device_index = r_device->integer;

	ri.Printf( PRINT_ALL, ".......................\nAvailable physical devices:\n" );
	for ( i = 0; i < device_count; i++ ) {
		qvkGetPhysicalDeviceProperties( physical_devices[ i ], &props );
		ri.Printf( PRINT_ALL, " %i: %s\n", i, renderer_name( &props ) );
		if ( device_index == -1 && props.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU ) {
			device_index = i;
		} else if ( device_index == -2 && props.deviceType == VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU ) {
			device_index = i;
		}
	}
	ri.Printf( PRINT_ALL, ".......................\n" );

	vk.physical_device = VK_NULL_HANDLE;
	for ( i = 0; i < device_count; i++, device_index++ ) {
		if ( device_index >= device_count || device_index < 0 ) {
			device_index = 0;
		}
		if ( vk_create_device( physical_devices[ device_index ], device_index ) ) {
			vk.physical_device = physical_devices[ device_index ];
			break;
		}
	}

	ri.Free( physical_devices );

	if ( vk.physical_device == VK_NULL_HANDLE ) {
		ri.Error( ERR_FATAL, "Vulkan: unable to find any suitable physical device" );
		return;
	}

	//
	// Get device level functions.
	//
	INIT_DEVICE_FUNCTION(vkAllocateCommandBuffers)
	INIT_DEVICE_FUNCTION(vkAllocateDescriptorSets)
	INIT_DEVICE_FUNCTION(vkAllocateMemory)
	INIT_DEVICE_FUNCTION(vkBeginCommandBuffer)
	INIT_DEVICE_FUNCTION(vkBindBufferMemory)
	INIT_DEVICE_FUNCTION(vkBindImageMemory)
	INIT_DEVICE_FUNCTION(vkCmdBeginRenderPass)
	INIT_DEVICE_FUNCTION(vkCmdBindDescriptorSets)
	INIT_DEVICE_FUNCTION(vkCmdBindIndexBuffer)
	INIT_DEVICE_FUNCTION(vkCmdBindPipeline)
	INIT_DEVICE_FUNCTION(vkCmdBindVertexBuffers)
	INIT_DEVICE_FUNCTION(vkCmdBlitImage)
	INIT_DEVICE_FUNCTION(vkCmdClearAttachments)
	INIT_DEVICE_FUNCTION(vkCmdCopyBuffer)
	INIT_DEVICE_FUNCTION(vkCmdCopyBufferToImage)
	INIT_DEVICE_FUNCTION(vkCmdCopyImage)
	INIT_DEVICE_FUNCTION(vkCmdDraw)
	INIT_DEVICE_FUNCTION(vkCmdDrawIndexed)
	INIT_DEVICE_FUNCTION(vkCmdEndRenderPass)
	INIT_DEVICE_FUNCTION(vkCmdNextSubpass)
	INIT_DEVICE_FUNCTION(vkCmdPipelineBarrier)
	INIT_DEVICE_FUNCTION(vkCmdPushConstants)
	INIT_DEVICE_FUNCTION(vkCmdSetDepthBias)
	INIT_DEVICE_FUNCTION(vkCmdSetScissor)
	INIT_DEVICE_FUNCTION(vkCmdSetViewport)
	INIT_DEVICE_FUNCTION(vkCreateBuffer)
	INIT_DEVICE_FUNCTION(vkCreateCommandPool)
	INIT_DEVICE_FUNCTION(vkCreateDescriptorPool)
	INIT_DEVICE_FUNCTION(vkCreateDescriptorSetLayout)
	INIT_DEVICE_FUNCTION(vkCreateFence)
	INIT_DEVICE_FUNCTION(vkCreateFramebuffer)
	INIT_DEVICE_FUNCTION(vkCreateGraphicsPipelines)
	INIT_DEVICE_FUNCTION(vkCreateImage)
	INIT_DEVICE_FUNCTION(vkCreateImageView)
	INIT_DEVICE_FUNCTION(vkCreatePipelineCache)
	INIT_DEVICE_FUNCTION(vkCreatePipelineLayout)
	INIT_DEVICE_FUNCTION(vkCreateRenderPass)
	INIT_DEVICE_FUNCTION(vkCreateSampler)
	INIT_DEVICE_FUNCTION(vkCreateSemaphore)
	INIT_DEVICE_FUNCTION(vkCreateShaderModule)
	INIT_DEVICE_FUNCTION(vkDestroyBuffer)
	INIT_DEVICE_FUNCTION(vkDestroyCommandPool)
	INIT_DEVICE_FUNCTION(vkDestroyDescriptorPool)
	INIT_DEVICE_FUNCTION(vkDestroyDescriptorSetLayout)
	INIT_DEVICE_FUNCTION(vkDestroyDevice)
	INIT_DEVICE_FUNCTION(vkDestroyFence)
	INIT_DEVICE_FUNCTION(vkDestroyFramebuffer)
	INIT_DEVICE_FUNCTION(vkDestroyImage)
	INIT_DEVICE_FUNCTION(vkDestroyImageView)
	INIT_DEVICE_FUNCTION(vkDestroyPipeline)
	INIT_DEVICE_FUNCTION(vkDestroyPipelineCache)
	INIT_DEVICE_FUNCTION(vkDestroyPipelineLayout)
	INIT_DEVICE_FUNCTION(vkDestroyRenderPass)
	INIT_DEVICE_FUNCTION(vkDestroySampler)
	INIT_DEVICE_FUNCTION(vkDestroySemaphore)
	INIT_DEVICE_FUNCTION(vkDestroyShaderModule)
	INIT_DEVICE_FUNCTION(vkDeviceWaitIdle)
	INIT_DEVICE_FUNCTION(vkEndCommandBuffer)
	INIT_DEVICE_FUNCTION(vkFlushMappedMemoryRanges)
	INIT_DEVICE_FUNCTION(vkFreeCommandBuffers)
	INIT_DEVICE_FUNCTION(vkFreeDescriptorSets)
	INIT_DEVICE_FUNCTION(vkFreeMemory)
	INIT_DEVICE_FUNCTION(vkGetBufferMemoryRequirements)
	INIT_DEVICE_FUNCTION(vkGetDeviceQueue)
	INIT_DEVICE_FUNCTION(vkGetImageMemoryRequirements)
	INIT_DEVICE_FUNCTION(vkGetImageSubresourceLayout)
	INIT_DEVICE_FUNCTION(vkInvalidateMappedMemoryRanges)
	INIT_DEVICE_FUNCTION(vkMapMemory)
	INIT_DEVICE_FUNCTION(vkQueueSubmit)
	INIT_DEVICE_FUNCTION(vkQueueWaitIdle)
	INIT_DEVICE_FUNCTION(vkResetCommandBuffer)
	INIT_DEVICE_FUNCTION(vkResetDescriptorPool)
	INIT_DEVICE_FUNCTION(vkResetFences)
	INIT_DEVICE_FUNCTION(vkUnmapMemory)
	INIT_DEVICE_FUNCTION(vkUpdateDescriptorSets)
	INIT_DEVICE_FUNCTION(vkWaitForFences)
	INIT_DEVICE_FUNCTION(vkAcquireNextImageKHR)
	INIT_DEVICE_FUNCTION(vkCreateSwapchainKHR)
	INIT_DEVICE_FUNCTION(vkDestroySwapchainKHR)
	INIT_DEVICE_FUNCTION(vkGetSwapchainImagesKHR)
	INIT_DEVICE_FUNCTION(vkQueuePresentKHR)

	if ( vk.dedicatedAllocation ) {
		INIT_DEVICE_FUNCTION_EXT(vkGetBufferMemoryRequirements2KHR);
		INIT_DEVICE_FUNCTION_EXT(vkGetImageMemoryRequirements2KHR);
		if ( !qvkGetBufferMemoryRequirements2KHR || !qvkGetImageMemoryRequirements2KHR ) {
			vk.dedicatedAllocation = qfalse;
		}
	}

	if ( vk.debugMarkers ) {
		INIT_DEVICE_FUNCTION_EXT(vkDebugMarkerSetObjectNameEXT)
	}
}

#undef INIT_INSTANCE_FUNCTION
#undef INIT_DEVICE_FUNCTION
#undef INIT_DEVICE_FUNCTION_EXT

static void deinit_vulkan_library( void )
{
	qvkCreateInstance							= NULL;
	qvkEnumerateInstanceExtensionProperties		= NULL;

	qvkCreateDevice								= NULL;
	qvkDestroyInstance							= NULL;
	qvkEnumerateDeviceExtensionProperties		= NULL;
	qvkEnumeratePhysicalDevices					= NULL;
	qvkGetDeviceProcAddr						= NULL;
	qvkGetPhysicalDeviceFeatures				= NULL;
	qvkGetPhysicalDeviceFormatProperties		= NULL;
	qvkGetPhysicalDeviceMemoryProperties		= NULL;
	qvkGetPhysicalDeviceProperties				= NULL;
	qvkGetPhysicalDeviceQueueFamilyProperties	= NULL;
	qvkDestroySurfaceKHR						= NULL;
	qvkGetPhysicalDeviceSurfaceCapabilitiesKHR	= NULL;
	qvkGetPhysicalDeviceSurfaceFormatsKHR		= NULL;
	qvkGetPhysicalDeviceSurfacePresentModesKHR	= NULL;
	qvkGetPhysicalDeviceSurfaceSupportKHR		= NULL;
#ifdef USE_VK_VALIDATION
	qvkCreateDebugReportCallbackEXT				= NULL;
	qvkDestroyDebugReportCallbackEXT			= NULL;
#endif
	qvkAllocateCommandBuffers					= NULL;
	qvkAllocateDescriptorSets					= NULL;
	qvkAllocateMemory							= NULL;
	qvkBeginCommandBuffer						= NULL;
	qvkBindBufferMemory							= NULL;
	qvkBindImageMemory							= NULL;
	qvkCmdBeginRenderPass						= NULL;
	qvkCmdBindDescriptorSets					= NULL;
	qvkCmdBindIndexBuffer						= NULL;
	qvkCmdBindPipeline							= NULL;
	qvkCmdBindVertexBuffers						= NULL;
	qvkCmdBlitImage								= NULL;
	qvkCmdClearAttachments						= NULL;
	qvkCmdCopyBuffer							= NULL;
	qvkCmdCopyBufferToImage						= NULL;
	qvkCmdCopyImage								= NULL;
	qvkCmdDraw									= NULL;
	qvkCmdDrawIndexed							= NULL;
	qvkCmdEndRenderPass							= NULL;
	qvkCmdNextSubpass							= NULL;
	qvkCmdPipelineBarrier						= NULL;
	qvkCmdPushConstants							= NULL;
	qvkCmdSetDepthBias							= NULL;
	qvkCmdSetScissor							= NULL;
	qvkCmdSetViewport							= NULL;
	qvkCreateBuffer								= NULL;
	qvkCreateCommandPool						= NULL;
	qvkCreateDescriptorPool						= NULL;
	qvkCreateDescriptorSetLayout				= NULL;
	qvkCreateFence								= NULL;
	qvkCreateFramebuffer						= NULL;
	qvkCreateGraphicsPipelines					= NULL;
	qvkCreateImage								= NULL;
	qvkCreateImageView							= NULL;
	qvkCreatePipelineCache						= NULL;
	qvkCreatePipelineLayout						= NULL;
	qvkCreateRenderPass							= NULL;
	qvkCreateSampler							= NULL;
	qvkCreateSemaphore							= NULL;
	qvkCreateShaderModule						= NULL;
	qvkDestroyBuffer							= NULL;
	qvkDestroyCommandPool						= NULL;
	qvkDestroyDescriptorPool					= NULL;
	qvkDestroyDescriptorSetLayout				= NULL;
	qvkDestroyDevice							= NULL;
	qvkDestroyFence								= NULL;
	qvkDestroyFramebuffer						= NULL;
	qvkDestroyImage								= NULL;
	qvkDestroyImageView							= NULL;
	qvkDestroyPipeline							= NULL;
	qvkDestroyPipelineCache						= NULL;
	qvkDestroyPipelineLayout					= NULL;
	qvkDestroyRenderPass						= NULL;
	qvkDestroySampler							= NULL;
	qvkDestroySemaphore							= NULL;
	qvkDestroyShaderModule						= NULL;
	qvkDeviceWaitIdle							= NULL;
	qvkEndCommandBuffer							= NULL;
	qvkFlushMappedMemoryRanges					= NULL;
	qvkFreeCommandBuffers						= NULL;
	qvkFreeDescriptorSets						= NULL;
	qvkFreeMemory								= NULL;
	qvkGetBufferMemoryRequirements				= NULL;
	qvkGetDeviceQueue							= NULL;
	qvkGetImageMemoryRequirements				= NULL;
	qvkGetImageSubresourceLayout				= NULL;
	qvkInvalidateMappedMemoryRanges				= NULL;
	qvkMapMemory								= NULL;
	qvkQueueSubmit								= NULL;
	qvkQueueWaitIdle							= NULL;
	qvkResetCommandBuffer						= NULL;
	qvkResetDescriptorPool						= NULL;
	qvkResetFences								= NULL;
	qvkUnmapMemory								= NULL;
	qvkUpdateDescriptorSets						= NULL;
	qvkWaitForFences							= NULL;
	qvkAcquireNextImageKHR						= NULL;
	qvkCreateSwapchainKHR						= NULL;
	qvkDestroySwapchainKHR						= NULL;
	qvkGetSwapchainImagesKHR					= NULL;
	qvkQueuePresentKHR							= NULL;

	qvkGetBufferMemoryRequirements2KHR			= NULL;
	qvkGetImageMemoryRequirements2KHR			= NULL;

	qvkDebugMarkerSetObjectNameEXT				= NULL;
}


static VkShaderModule SHADER_MODULE(const uint8_t *bytes, const int count) {
	VkShaderModuleCreateInfo desc;
	VkShaderModule module;

	if ( count % 4 != 0 ) {
		ri.Error( ERR_FATAL, "Vulkan: SPIR-V binary buffer size is not a multiple of 4" );
	}

	desc.sType = VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.codeSize = count;
	desc.pCode = (const uint32_t*)bytes;

	VK_CHECK(qvkCreateShaderModule(vk.device, &desc, NULL, &module));

	return module;
}


static void vk_create_layout_binding( int binding, VkDescriptorType type, VkShaderStageFlags flags, VkDescriptorSetLayout *layout )
{
	VkDescriptorSetLayoutBinding bind;
	VkDescriptorSetLayoutCreateInfo desc;

	bind.binding = binding;
	bind.descriptorType = type;
	bind.descriptorCount = 1;
	bind.stageFlags = flags;
	bind.pImmutableSamplers = NULL;

	desc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.bindingCount = 1;
	desc.pBindings = &bind;

	VK_CHECK( qvkCreateDescriptorSetLayout(vk.device, &desc, NULL, layout ) );
}


void vk_update_uniform_descriptor( VkDescriptorSet descriptor, VkBuffer buffer )
{
	VkDescriptorBufferInfo info;
	VkWriteDescriptorSet desc;

	info.buffer = buffer;
	info.offset = 0;
	info.range = sizeof( vkUniform_t );

	desc.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
	desc.dstSet = descriptor;
	desc.dstBinding = 0;
	desc.dstArrayElement = 0;
	desc.descriptorCount = 1;
	desc.pNext = NULL;
	desc.descriptorType = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
	desc.pImageInfo = NULL;
	desc.pBufferInfo = &info;
	desc.pTexelBufferView = NULL;

	qvkUpdateDescriptorSets( vk.device, 1, &desc, 0, NULL );
}


static VkSampler vk_find_sampler( const Vk_Sampler_Def *def ) {
	VkSamplerAddressMode address_mode;
	VkSamplerCreateInfo desc;
	VkSampler sampler;
	VkFilter mag_filter;
	VkFilter min_filter;
	VkSamplerMipmapMode mipmap_mode;
	float maxLod;
	int i;

	// Look for sampler among existing samplers.
	for ( i = 0; i < vk_world.num_samplers; i++ ) {
		const Vk_Sampler_Def *cur_def = &vk_world.sampler_defs[i];
		if ( memcmp( cur_def, def, sizeof( *def ) ) == 0 ) {
			return vk_world.samplers[i];
		}
	}

	// Create new sampler.
	if ( vk_world.num_samplers >= MAX_VK_SAMPLERS ) {
		ri.Error( ERR_DROP, "vk_find_sampler: MAX_VK_SAMPLERS hit\n" );
	}

	address_mode = def->address_mode;

	if (def->gl_mag_filter == GL_NEAREST) {
		mag_filter = VK_FILTER_NEAREST;
	} else if (def->gl_mag_filter == GL_LINEAR) {
		mag_filter = VK_FILTER_LINEAR;
	} else {
		ri.Error(ERR_FATAL, "vk_find_sampler: invalid gl_mag_filter");
		return VK_NULL_HANDLE;
	}

	maxLod = vk.maxLod;

	if (def->gl_min_filter == GL_NEAREST) {
		min_filter = VK_FILTER_NEAREST;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
		maxLod = 0.25f; // used to emulate OpenGL's GL_LINEAR/GL_NEAREST minification filter
	} else if (def->gl_min_filter == GL_LINEAR) {
		min_filter = VK_FILTER_LINEAR;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
		maxLod = 0.25f; // used to emulate OpenGL's GL_LINEAR/GL_NEAREST minification filter
	} else if (def->gl_min_filter == GL_NEAREST_MIPMAP_NEAREST) {
		min_filter = VK_FILTER_NEAREST;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
	} else if (def->gl_min_filter == GL_LINEAR_MIPMAP_NEAREST) {
		min_filter = VK_FILTER_LINEAR;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
	} else if (def->gl_min_filter == GL_NEAREST_MIPMAP_LINEAR) {
		min_filter = VK_FILTER_NEAREST;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	} else if (def->gl_min_filter == GL_LINEAR_MIPMAP_LINEAR) {
		min_filter = VK_FILTER_LINEAR;
		mipmap_mode = VK_SAMPLER_MIPMAP_MODE_LINEAR;
	} else {
		ri.Error(ERR_FATAL, "vk_find_sampler: invalid gl_min_filter");
		return VK_NULL_HANDLE;
	}

	if ( def->max_lod_1_0 ) {
		maxLod = 1.0f;
	}

	desc.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.magFilter = mag_filter;
	desc.minFilter = min_filter;
	desc.mipmapMode = mipmap_mode;
	desc.addressModeU = address_mode;
	desc.addressModeV = address_mode;
	desc.addressModeW = address_mode;
	desc.mipLodBias = 0.0f;

	if ( def->noAnisotropy ) {
		desc.anisotropyEnable = VK_FALSE;
		desc.maxAnisotropy = 1.0f;
	} else {
		desc.anisotropyEnable = (r_ext_texture_filter_anisotropic->integer && vk.samplerAnisotropy) ? VK_TRUE : VK_FALSE;
		if ( desc.anisotropyEnable ) {
			desc.maxAnisotropy = MIN( r_ext_max_anisotropy->integer, vk.maxAnisotropy );
		}
	}

	desc.compareEnable = VK_FALSE;
	desc.compareOp = VK_COMPARE_OP_ALWAYS;
	desc.minLod = 0.0f;
	desc.maxLod = maxLod;
	desc.borderColor = VK_BORDER_COLOR_INT_OPAQUE_BLACK;
	desc.unnormalizedCoordinates = VK_FALSE;

	VK_CHECK( qvkCreateSampler( vk.device, &desc, NULL, &sampler ) );

	SET_OBJECT_NAME( sampler, va( "image sampler %i", vk_world.num_samplers ), VK_DEBUG_REPORT_OBJECT_TYPE_SAMPLER_EXT );

	vk_world.sampler_defs[ vk_world.num_samplers ] = *def;
	vk_world.samplers[ vk_world.num_samplers ] = sampler;
	vk_world.num_samplers++;

	return sampler;
}


static void vk_update_attachment_descriptors( void ) {

	if ( vk.color_image_view )
	{
		VkDescriptorImageInfo info;
		VkWriteDescriptorSet desc;
		Vk_Sampler_Def sd;

		Com_Memset( &sd, 0, sizeof( sd ) );
		sd.gl_mag_filter = sd.gl_min_filter = vk.blitFilter;
		sd.address_mode = VK_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE;
		sd.max_lod_1_0 = qtrue;
		sd.noAnisotropy = qtrue;

		info.sampler = vk_find_sampler( &sd );
		info.imageView = vk.color_image_view;
		info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
		desc.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
		desc.dstSet = vk.color_descriptor;
		desc.dstBinding = 0;
		desc.dstArrayElement = 0;
		desc.descriptorCount = 1;
		desc.pNext = NULL;
		desc.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
		desc.pImageInfo = &info;
		desc.pBufferInfo = NULL;
		desc.pTexelBufferView = NULL;

		qvkUpdateDescriptorSets( vk.device, 1, &desc, 0, NULL );

		// screenmap
		sd.gl_mag_filter = sd.gl_min_filter = GL_LINEAR;
		sd.max_lod_1_0 = qfalse;
		sd.noAnisotropy = qtrue;

		info.sampler = vk_find_sampler( &sd );

		info.imageView = vk.screenMap.color_image_view;
		desc.dstSet = vk.screenMap.color_descriptor;

		qvkUpdateDescriptorSets( vk.device, 1, &desc, 0, NULL );

		// bloom images
		if ( r_bloom->integer )
		{
			uint32_t i;
			for ( i = 0; i < ARRAY_LEN( vk.bloom_image_descriptor ); i++ )
			{
				info.imageView = vk.bloom_image_view[i];
				desc.dstSet = vk.bloom_image_descriptor[i];

				qvkUpdateDescriptorSets( vk.device, 1, &desc, 0, NULL );
			}
		}
	}
}


void vk_init_descriptors( void )
{
	VkDescriptorSetAllocateInfo alloc;
	VkDescriptorBufferInfo info;
	VkWriteDescriptorSet desc;
	uint32_t i;

	alloc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
	alloc.pNext = NULL;
	alloc.descriptorPool = vk.descriptor_pool;
	alloc.descriptorSetCount = 1;
	alloc.pSetLayouts = &vk.set_layout_storage;

	VK_CHECK( qvkAllocateDescriptorSets( vk.device, &alloc, &vk.storage.descriptor ) );

	info.buffer = vk.storage.buffer;
	info.offset = 0;
	info.range = sizeof( uint32_t );

	desc.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
	desc.dstSet = vk.storage.descriptor;
	desc.dstBinding = 0;
	desc.dstArrayElement = 0;
	desc.descriptorCount = 1;
	desc.pNext = NULL;
	desc.descriptorType = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC;
	desc.pImageInfo = NULL;
	desc.pBufferInfo = &info;
	desc.pTexelBufferView = NULL;

	qvkUpdateDescriptorSets( vk.device, 1, &desc, 0, NULL );

	// allocated and update descriptor set
	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ )
	{
		alloc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
		alloc.pNext = NULL;
		alloc.descriptorPool = vk.descriptor_pool;
		alloc.descriptorSetCount = 1;
		alloc.pSetLayouts = &vk.set_layout_uniform;

		VK_CHECK( qvkAllocateDescriptorSets( vk.device, &alloc, &vk.tess[i].uniform_descriptor ) );

		vk_update_uniform_descriptor( vk.tess[ i ].uniform_descriptor, vk.tess[ i ].vertex_buffer );

		SET_OBJECT_NAME( vk.tess[ i ].uniform_descriptor, va( "uniform descriptor %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_SET_EXT );
	}

	if ( vk.color_image_view )
	{
		alloc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
		alloc.pNext = NULL;
		alloc.descriptorPool = vk.descriptor_pool;
		alloc.descriptorSetCount = 1;
		alloc.pSetLayouts = &vk.set_layout_sampler;

		VK_CHECK( qvkAllocateDescriptorSets( vk.device, &alloc, &vk.color_descriptor ) );

		if ( r_bloom->integer )
		{
			for ( i = 0; i < ARRAY_LEN( vk.bloom_image_descriptor ); i++ )
			{
				VK_CHECK( qvkAllocateDescriptorSets( vk.device, &alloc, &vk.bloom_image_descriptor[i] ) );
			}
		}

		alloc.descriptorSetCount = 1;
		VK_CHECK( qvkAllocateDescriptorSets( vk.device, &alloc, &vk.screenMap.color_descriptor ) ); // screenmap

		vk_update_attachment_descriptors();
	}
}


static void vk_release_geometry_buffers( void )
{
	int i;

	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ ) {
		qvkDestroyBuffer( vk.device, vk.tess[i].vertex_buffer, NULL );
		vk.tess[i].vertex_buffer = VK_NULL_HANDLE;
	}

	qvkFreeMemory( vk.device, vk.geometry_buffer_memory, NULL );
	vk.geometry_buffer_memory = VK_NULL_HANDLE;
}


static void vk_create_geometry_buffers( VkDeviceSize size )
{
	VkMemoryRequirements vb_memory_requirements;
	VkMemoryAllocateInfo alloc_info;
	VkBufferCreateInfo desc;
	VkDeviceSize vertex_buffer_offset;
	uint32_t memory_type_bits;
	uint32_t memory_type;
	void *data;
	int i;

	desc.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	desc.queueFamilyIndexCount = 0;
	desc.pQueueFamilyIndices = NULL;

	Com_Memset( &vb_memory_requirements, 0, sizeof( vb_memory_requirements ) );

	for ( i = 0 ; i < NUM_COMMAND_BUFFERS; i++ ) {
		desc.size = size;
		desc.usage = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT;
		VK_CHECK( qvkCreateBuffer( vk.device, &desc, NULL, &vk.tess[i].vertex_buffer ) );

		qvkGetBufferMemoryRequirements( vk.device, vk.tess[i].vertex_buffer, &vb_memory_requirements );
	}

	memory_type_bits = vb_memory_requirements.memoryTypeBits;
	memory_type = find_memory_type( vk.physical_device, memory_type_bits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT );

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = vb_memory_requirements.size * NUM_COMMAND_BUFFERS;
	alloc_info.memoryTypeIndex = memory_type;

	VK_CHECK( qvkAllocateMemory( vk.device, &alloc_info, NULL, &vk.geometry_buffer_memory ) );
	VK_CHECK( qvkMapMemory( vk.device, vk.geometry_buffer_memory, 0, VK_WHOLE_SIZE, 0, &data ) );

	vertex_buffer_offset = 0;

	for ( i = 0 ; i < NUM_COMMAND_BUFFERS; i++ ) {
		qvkBindBufferMemory( vk.device, vk.tess[i].vertex_buffer, vk.geometry_buffer_memory, vertex_buffer_offset );
		vk.tess[i].vertex_buffer_ptr = (byte*)data + vertex_buffer_offset;
		vk.tess[i].vertex_buffer_offset = 0;
		vertex_buffer_offset += vb_memory_requirements.size;

		SET_OBJECT_NAME( vk.tess[i].vertex_buffer, va( "geometry buffer %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT );
	}

	SET_OBJECT_NAME( vk.geometry_buffer_memory, "geometry buffer memory", VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT );

	vk.geometry_buffer_size = vb_memory_requirements.size;

	Com_Memset( &vk.stats, 0, sizeof( vk.stats ) );
}


static void vk_create_storage_buffer( uint32_t size )
{
	VkMemoryRequirements memory_requirements;
	VkMemoryAllocateInfo alloc_info;
	VkBufferCreateInfo desc;
	uint32_t memory_type_bits;
	uint32_t memory_type;

	desc.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	desc.queueFamilyIndexCount = 0;
	desc.pQueueFamilyIndices = NULL;

	Com_Memset( &memory_requirements, 0, sizeof( memory_requirements ) );

	desc.size = size;
	desc.usage = VK_BUFFER_USAGE_STORAGE_BUFFER_BIT;
	VK_CHECK( qvkCreateBuffer( vk.device, &desc, NULL, &vk.storage.buffer ) );

	qvkGetBufferMemoryRequirements( vk.device, vk.storage.buffer, &memory_requirements );

	memory_type_bits = memory_requirements.memoryTypeBits;
	memory_type = find_memory_type( vk.physical_device, memory_type_bits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT );

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = memory_requirements.size;
	alloc_info.memoryTypeIndex = memory_type;

	VK_CHECK( qvkAllocateMemory( vk.device, &alloc_info, NULL, &vk.storage.memory ) );
	VK_CHECK( qvkMapMemory( vk.device, vk.storage.memory, 0, VK_WHOLE_SIZE, 0, (void**)&vk.storage.buffer_ptr ) );

	Com_Memset( vk.storage.buffer_ptr, 0, memory_requirements.size );

	qvkBindBufferMemory( vk.device, vk.storage.buffer, vk.storage.memory, 0 );

	SET_OBJECT_NAME( vk.storage.buffer, "storage buffer", VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT );
	SET_OBJECT_NAME( vk.storage.descriptor, "storage buffer", VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_SET_EXT );
	SET_OBJECT_NAME( vk.storage.memory, "storage buffer memory", VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT );
}


#ifdef USE_VBO
void vk_release_vbo( void )
{
	if ( vk.vbo.vertex_buffer )
		qvkDestroyBuffer( vk.device, vk.vbo.vertex_buffer, NULL );
	vk.vbo.vertex_buffer = VK_NULL_HANDLE;

	if ( vk.vbo.buffer_memory )
		qvkFreeMemory( vk.device, vk.vbo.buffer_memory, NULL );
	vk.vbo.buffer_memory = VK_NULL_HANDLE;
}


qboolean vk_alloc_vbo( const byte *vbo_data, int vbo_size )
{
	VkMemoryRequirements vb_mem_reqs;
	VkMemoryAllocateInfo alloc_info;
	VkBufferCreateInfo desc;
	VkDeviceSize vertex_buffer_offset;
	VkDeviceSize allocationSize;
	uint32_t memory_type_bits;
	VkBuffer staging_vertex_buffer;
	VkDeviceMemory staging_buffer_memory;
	VkCommandBuffer command_buffer;
	VkBufferCopy copyRegion[1];
	void *data;

	vk_release_vbo();

	desc.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	desc.queueFamilyIndexCount = 0;
	desc.pQueueFamilyIndices = NULL;

	// device-local buffer
	desc.size = vbo_size;
	desc.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
	VK_CHECK( qvkCreateBuffer( vk.device, &desc, NULL, &vk.vbo.vertex_buffer ) );

	// staging buffer
	desc.size = vbo_size;
	desc.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_VERTEX_BUFFER_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT;
	VK_CHECK( qvkCreateBuffer( vk.device, &desc, NULL, &staging_vertex_buffer ) );

	// memory requirements
	qvkGetBufferMemoryRequirements( vk.device, vk.vbo.vertex_buffer, &vb_mem_reqs );
	vertex_buffer_offset = 0;
	allocationSize = vertex_buffer_offset + vb_mem_reqs.size;
	memory_type_bits = vb_mem_reqs.memoryTypeBits;

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = allocationSize;
	alloc_info.memoryTypeIndex = find_memory_type( vk.physical_device, memory_type_bits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT );
	VK_CHECK( qvkAllocateMemory( vk.device, &alloc_info, NULL, &vk.vbo.buffer_memory ) );
	qvkBindBufferMemory( vk.device, vk.vbo.vertex_buffer, vk.vbo.buffer_memory, vertex_buffer_offset );

	// staging buffers

	// memory requirements
	qvkGetBufferMemoryRequirements( vk.device, staging_vertex_buffer, &vb_mem_reqs );
	vertex_buffer_offset = 0;
	allocationSize = vertex_buffer_offset + vb_mem_reqs.size;
	memory_type_bits = vb_mem_reqs.memoryTypeBits;

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = allocationSize;
	alloc_info.memoryTypeIndex = find_memory_type( vk.physical_device, memory_type_bits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT );
	VK_CHECK( qvkAllocateMemory( vk.device, &alloc_info, NULL, &staging_buffer_memory ) );
	qvkBindBufferMemory( vk.device, staging_vertex_buffer, staging_buffer_memory, vertex_buffer_offset );

	VK_CHECK( qvkMapMemory( vk.device, staging_buffer_memory, 0, VK_WHOLE_SIZE, 0, &data ) );
	memcpy( (byte*)data + vertex_buffer_offset, vbo_data, vbo_size );
	qvkUnmapMemory( vk.device, staging_buffer_memory );

	command_buffer = begin_command_buffer();
	copyRegion[0].srcOffset = 0;
	copyRegion[0].dstOffset = 0;
	copyRegion[0].size = vbo_size;
	qvkCmdCopyBuffer( command_buffer, staging_vertex_buffer, vk.vbo.vertex_buffer, 1, &copyRegion[0] );

	end_command_buffer( command_buffer );

	qvkDestroyBuffer( vk.device, staging_vertex_buffer, NULL );
	qvkFreeMemory( vk.device, staging_buffer_memory, NULL );

	SET_OBJECT_NAME( vk.vbo.vertex_buffer, "static VBO", VK_DEBUG_REPORT_OBJECT_TYPE_BUFFER_EXT );
	SET_OBJECT_NAME( vk.vbo.buffer_memory, "static VBO memory", VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT );

	return qtrue;
}
#endif

#include "shaders/spirv/shader_data.c"
#define SHADER_MODULE(name) SHADER_MODULE(name,sizeof(name))

static void vk_create_shader_modules( void )
{
	int i, j, k, l;

	vk.modules.vert.gen[0][0][0][0] = SHADER_MODULE( vert_tx0 );
	vk.modules.vert.gen[0][0][0][1] = SHADER_MODULE( vert_tx0_fog );
	vk.modules.vert.gen[0][0][1][0] = SHADER_MODULE( vert_tx0_env );
	vk.modules.vert.gen[0][0][1][1] = SHADER_MODULE( vert_tx0_env_fog );

	vk.modules.vert.gen[1][0][0][0] = SHADER_MODULE( vert_tx1 );
	vk.modules.vert.gen[1][0][0][1] = SHADER_MODULE( vert_tx1_fog );
	vk.modules.vert.gen[1][0][1][0] = SHADER_MODULE( vert_tx1_env );
	vk.modules.vert.gen[1][0][1][1] = SHADER_MODULE( vert_tx1_env_fog );

	vk.modules.vert.gen[1][1][0][0] = SHADER_MODULE( vert_tx1_cl );
	vk.modules.vert.gen[1][1][0][1] = SHADER_MODULE( vert_tx1_cl_fog );
	vk.modules.vert.gen[1][1][1][0] = SHADER_MODULE( vert_tx1_cl_env );
	vk.modules.vert.gen[1][1][1][1] = SHADER_MODULE( vert_tx1_cl_env_fog );

	vk.modules.vert.gen[2][0][0][0] = SHADER_MODULE( vert_tx2 );
	vk.modules.vert.gen[2][0][0][1] = SHADER_MODULE( vert_tx2_fog );
	vk.modules.vert.gen[2][0][1][0] = SHADER_MODULE( vert_tx2_env );
	vk.modules.vert.gen[2][0][1][1] = SHADER_MODULE( vert_tx2_env_fog );

	vk.modules.vert.gen[2][1][0][0] = SHADER_MODULE( vert_tx2_cl );
	vk.modules.vert.gen[2][1][0][1] = SHADER_MODULE( vert_tx2_cl_fog );
	vk.modules.vert.gen[2][1][1][0] = SHADER_MODULE( vert_tx2_cl_env );
	vk.modules.vert.gen[2][1][1][1] = SHADER_MODULE( vert_tx2_cl_env_fog );

	for ( i = 0; i < 3; i++ ) {
		const char *tx[] = { "single", "double", "triple" };
		const char *cl[] = { "", "+cl" };
		const char *env[] = { "", "+env" };
		const char *fog[] = { "", "+fog" };
		for ( j = 0; j < 2; j++ ) {
			for ( k = 0; k < 2; k++ ) {
				for ( l = 0; l < 2; l++ ) {
					const char *s = va( "%s-texture%s%s%s vertex module", tx[i], cl[j], env[k], fog[l] );
					SET_OBJECT_NAME( vk.modules.vert.gen[i][j][k][l], s, VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
				}
			}
		}
	}

	vk.modules.frag.gen0_df = SHADER_MODULE( frag_tx0_df );
	SET_OBJECT_NAME( vk.modules.frag.gen0_df, "single-texture df fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.vert.gen0_ident = SHADER_MODULE( vert_tx0_ident );
	vk.modules.frag.gen0_ident = SHADER_MODULE( frag_tx0_ident );
	SET_OBJECT_NAME( vk.modules.vert.gen0_ident, "single-texture ident.color vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.frag.gen0_ident, "single-texture ident.color fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.frag.gen[0][0][0] = SHADER_MODULE( frag_tx0 );
	vk.modules.frag.gen[0][0][1] = SHADER_MODULE( frag_tx0_fog );

	vk.modules.frag.gen[1][0][0] = SHADER_MODULE( frag_tx1 );
	vk.modules.frag.gen[1][0][1] = SHADER_MODULE( frag_tx1_fog );

	vk.modules.frag.gen[1][1][0] = SHADER_MODULE( frag_tx1_cl );
	vk.modules.frag.gen[1][1][1] = SHADER_MODULE( frag_tx1_cl_fog );

	vk.modules.frag.gen[2][0][0] = SHADER_MODULE( frag_tx2 );
	vk.modules.frag.gen[2][0][1] = SHADER_MODULE( frag_tx2_fog );

	vk.modules.frag.gen[2][1][0] = SHADER_MODULE( frag_tx2_cl );
	vk.modules.frag.gen[2][1][1] = SHADER_MODULE( frag_tx2_cl_fog );

	for ( i = 0; i < 3; i++ ) {
		const char *tx[] = { "single", "double", "triple" };
		const char *cl[] = { "", "+cl" };
		const char *fog[] = { "", "+fog" };
		for ( j = 0; j < 2; j++ ) {
			for ( k = 0; k < 2; k++ ) {
				const char *s = va( "%s-texture%s%s fragment module", tx[i], cl[j], fog[k] );
				SET_OBJECT_NAME( vk.modules.frag.gen[i][j][k], s, VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
			}
		}
	}


	vk.modules.vert.light[0] = SHADER_MODULE( vert_light );
	vk.modules.vert.light[1] = SHADER_MODULE( vert_light_fog );
	SET_OBJECT_NAME( vk.modules.vert.light[0], "light vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.vert.light[1], "light fog vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.frag.light[0][0] = SHADER_MODULE( frag_light );
	vk.modules.frag.light[0][1] = SHADER_MODULE( frag_light_fog );
	vk.modules.frag.light[1][0] = SHADER_MODULE( frag_light_line );
	vk.modules.frag.light[1][1] = SHADER_MODULE( frag_light_line_fog );
	SET_OBJECT_NAME( vk.modules.frag.light[0][0], "light fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.frag.light[0][1], "light fog fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.frag.light[1][0], "linear light fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.frag.light[1][1], "linear light fog fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.color_fs = SHADER_MODULE( color_frag_spv );
	vk.modules.color_vs = SHADER_MODULE( color_vert_spv );

	SET_OBJECT_NAME( vk.modules.color_vs, "single-color vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.color_fs, "single-color fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.fog_vs = SHADER_MODULE( fog_vert_spv );
	vk.modules.fog_fs = SHADER_MODULE( fog_frag_spv );

	SET_OBJECT_NAME( vk.modules.fog_vs, "fog-only vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.fog_fs, "fog-only fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.dot_vs = SHADER_MODULE( dot_vert_spv );
	vk.modules.dot_fs = SHADER_MODULE( dot_frag_spv );

	SET_OBJECT_NAME( vk.modules.dot_vs, "dot vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.dot_fs, "dot fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.bloom_fs = SHADER_MODULE( bloom_frag_spv );
	vk.modules.blur_fs = SHADER_MODULE( blur_frag_spv );
	vk.modules.blend_fs = SHADER_MODULE( blend_frag_spv );

	SET_OBJECT_NAME( vk.modules.bloom_fs, "bloom extraction fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.blur_fs, "gaussian blur fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.blend_fs, "final bloom blend fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );

	vk.modules.gamma_fs = SHADER_MODULE( gamma_frag_spv );
	vk.modules.gamma_vs = SHADER_MODULE( gamma_vert_spv );

	SET_OBJECT_NAME( vk.modules.gamma_fs, "gamma post-processing fragment module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
	SET_OBJECT_NAME( vk.modules.gamma_vs, "gamma post-processing vertex module", VK_DEBUG_REPORT_OBJECT_TYPE_SHADER_MODULE_EXT );
}


static void vk_alloc_persistent_pipelines( void )
{
	unsigned int state_bits;
	Vk_Pipeline_Def def;

	// skybox
	{
		Com_Memset(&def, 0, sizeof(def));
		def.shader_type = TYPE_SIGNLE_TEXTURE_IDENTITY;
		def.face_culling = CT_FRONT_SIDED;
		def.polygon_offset = qfalse;
		def.mirror = qfalse;
		vk.skybox_pipeline = vk_find_pipeline_ext( 0, &def, qtrue );
	}

	// stencil shadows
	{
		cullType_t cull_types[2] = { CT_FRONT_SIDED, CT_BACK_SIDED };
		qboolean mirror_flags[2] = { qfalse, qtrue };
		int i, j;

		Com_Memset(&def, 0, sizeof(def));
		def.polygon_offset = qfalse;
		def.state_bits = 0;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.shadow_phase = SHADOW_EDGES;

		for (i = 0; i < 2; i++) {
			def.face_culling = cull_types[i];
			for (j = 0; j < 2; j++) {
				def.mirror = mirror_flags[j];
				vk.shadow_volume_pipelines[i][j] = vk_find_pipeline_ext( 0, &def, r_shadows->integer ? qtrue: qfalse );
			}
		}
	}
	{
		Com_Memset( &def, 0, sizeof( def ) );
		def.face_culling = CT_FRONT_SIDED;
		def.polygon_offset = qfalse;
		def.state_bits = GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ZERO;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.mirror = qfalse;
		def.shadow_phase = SHADOW_FS_QUAD;
		def.primitives = TRIANGLE_STRIP;
		vk.shadow_finish_pipeline = vk_find_pipeline_ext( 0, &def, r_shadows->integer ? qtrue: qfalse );
	}

	// fog and dlights
	{
		unsigned int fog_state_bits[2] = {
			GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA | GLS_DEPTHFUNC_EQUAL, // fogPass == FP_EQUAL
			GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA // fogPass == FP_LE
		};
		unsigned int dlight_state_bits[2] = {
			GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL,	// modulated
			GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL			// additive
		};
		qboolean polygon_offset[2] = { qfalse, qtrue };
		int i, j, k, l;

		Com_Memset(&def, 0, sizeof(def));
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.mirror = qfalse;

		for ( i = 0; i < 2; i++ ) {
			unsigned fog_state = fog_state_bits[ i ];
			unsigned dlight_state = dlight_state_bits[ i ];

			for ( j = 0; j < 3; j++ ) {
				def.face_culling = j; // cullType_t value

				for ( k = 0; k < 2; k++ ) {
					def.polygon_offset = polygon_offset[ k ];
#ifdef USE_FOG_ONLY
					def.shader_type = TYPE_FOG_ONLY;
#else
					def.shader_type = TYPE_SIGNLE_TEXTURE;
#endif
					def.state_bits = fog_state;
					vk.fog_pipelines[ i ][ j ][ k ] = vk_find_pipeline_ext( 0, &def, qtrue );

					def.shader_type = TYPE_SIGNLE_TEXTURE;
					def.state_bits = dlight_state;
#ifdef USE_LEGACY_DLIGHTS
#ifdef USE_PMLIGHT
					vk.dlight_pipelines[ i ][ j ][ k ] = vk_find_pipeline_ext( 0, &def, r_dlightMode->integer == 0 ? qtrue : qfalse );
#else
					vk.dlight_pipelines[ i ][ j ][ k ] = vk_find_pipeline_ext( 0, &def, qtrue );
#endif
#endif
				}
			}
		}

#ifdef USE_PMLIGHT
		def.state_bits = GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL;
		//def.shader_type = TYPE_SIGNLE_TEXTURE_LIGHTING;
		for (i = 0; i < 3; i++) { // cullType
			def.face_culling = i;
			for ( j = 0; j < 2; j++ ) { // polygonOffset
				def.polygon_offset = polygon_offset[j];
				for ( k = 0; k < 2; k++ ) {
					def.fog_stage = k; // fogStage
					for ( l = 0; l < 2; l++ ) {
						def.abs_light = l;
						def.shader_type = TYPE_SIGNLE_TEXTURE_LIGHTING;
						vk.dlight_pipelines_x[i][j][k][l] = vk_find_pipeline_ext( 0, &def, qfalse );
						def.shader_type = TYPE_SIGNLE_TEXTURE_LIGHTING_LINEAR;
						vk.dlight1_pipelines_x[i][j][k][l] = vk_find_pipeline_ext( 0, &def, qfalse );
					}
				}
			}
		}
#endif // USE_PMLIGHT
	}

	// RT_BEAM surface
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE;
		def.face_culling = CT_FRONT_SIDED;
		def.primitives = TRIANGLE_STRIP;
		vk.surface_beam_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}

	// axis for missing models
	{
		Com_Memset( &def, 0, sizeof( def ) );
		def.state_bits = GLS_DEFAULT;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.face_culling = CT_TWO_SIDED;
		def.primitives = LINE_LIST;
		if ( vk.wideLines )
			def.line_width = 3;
		vk.surface_axis_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}

	// flare visibility test dot
	{
		Com_Memset( &def, 0, sizeof( def ) );
		//def.state_bits = GLS_DEFAULT;
		def.face_culling = CT_TWO_SIDED;
		def.shader_type = TYPE_DOT;
		def.primitives = POINT_LIST;
		vk.dot_pipeline = vk_find_pipeline_ext( 0, &def, qtrue );
	}

	// DrawTris()
	state_bits = GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE;
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_WHITE;
		def.face_culling = CT_FRONT_SIDED;
		vk.tris_debug_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_WHITE;
		def.face_culling = CT_BACK_SIDED;
		vk.tris_mirror_debug_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_GREEN;
		def.face_culling = CT_FRONT_SIDED;
		vk.tris_debug_green_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_GREEN;
		def.face_culling = CT_BACK_SIDED;
		vk.tris_mirror_debug_green_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_RED;
		def.face_culling = CT_FRONT_SIDED;
		vk.tris_debug_red_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = state_bits;
		def.shader_type = TYPE_COLOR_RED;
		def.face_culling = CT_BACK_SIDED;
		vk.tris_mirror_debug_red_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}

	// DrawNormals()
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = GLS_DEPTHMASK_TRUE;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.primitives = LINE_LIST;
		vk.normals_debug_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}

	// RB_DebugPolygon()
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		vk.surface_debug_pipeline_solid = vk_find_pipeline_ext( 0, &def, qfalse );
	}
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = GLS_POLYMODE_LINE | GLS_DEPTHMASK_TRUE | GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.primitives = LINE_LIST;
		vk.surface_debug_pipeline_outline = vk_find_pipeline_ext( 0, &def, qfalse );
	}

	// RB_ShowImages
	{
		Com_Memset(&def, 0, sizeof(def));
		def.state_bits = GLS_DEPTHTEST_DISABLE | GLS_SRCBLEND_SRC_ALPHA | GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA;
		def.shader_type = TYPE_SIGNLE_TEXTURE;
		def.primitives = TRIANGLE_STRIP;
		vk.images_debug_pipeline = vk_find_pipeline_ext( 0, &def, qfalse );
	}
}

void vk_create_blur_pipeline( uint32_t index, uint32_t width, uint32_t height, qboolean horizontal_pass );

void static vk_create_bloom_pipelines( void )
{
	if ( vk.fboActive && r_bloom->integer )
	{
		uint32_t width = gls.captureWidth;
		uint32_t height = gls.captureHeight;
		uint32_t i;

		vk_create_post_process_pipeline( 1, width, height ); // bloom extraction

		for ( i = 0; i < ARRAY_LEN( vk.blur_pipeline ); i += 2 ) {
			width /= 2;
			height /= 2;
			vk_create_blur_pipeline( i + 0, width, height, qtrue ); // horizontal
			vk_create_blur_pipeline( i + 1, width, height, qfalse ); // vertical
		}

		vk_create_post_process_pipeline( 2, glConfig.vidWidth, glConfig.vidHeight ); // bloom blending
	}
}


void vk_update_post_process_pipelines( void )
{
	if ( vk.fboActive ) {
		// update gamma shader
		vk_create_post_process_pipeline( 0, 0, 0 );
		if ( vk.capture.image ) {
			// update capture pipeline
			vk_create_post_process_pipeline( 3, gls.captureWidth, gls.captureHeight );
		}
	}
}


typedef struct vk_attach_desc_s  {
	VkImage descriptor;
	VkImageView *image_view;
	VkImageUsageFlags usage;
	VkMemoryRequirements reqs;
	uint32_t memoryTypeIndex;
	VkDeviceSize  memory_offset;
	// for layout transition:
	VkImageAspectFlags aspect_flags;
	VkAccessFlags access_flags;
	VkImageLayout image_layout;
	VkFormat image_format;
} vk_attach_desc_t;

static vk_attach_desc_t attachments[ MAX_ATTACHMENTS_IN_POOL ];
static uint32_t num_attachments = 0;


static void vk_clear_attachment_pool( void )
{
	num_attachments = 0;
}


static void vk_alloc_attachments( void )
{
	VkImageViewCreateInfo view_desc;
	VkMemoryDedicatedAllocateInfoKHR alloc_info2;
	VkMemoryAllocateInfo alloc_info;
	VkCommandBuffer command_buffer;
	VkDeviceMemory memory;
	VkDeviceSize offset;
	uint32_t memoryTypeBits;
	uint32_t memoryTypeIndex;
	uint32_t i;

	if ( num_attachments == 0 ) {
		return;
	}

	if ( vk.image_memory_count >= ARRAY_LEN( vk.image_memory ) ) {
		ri.Error( ERR_DROP, "vk.image_memory_count == %i", (int)ARRAY_LEN( vk.image_memory ) );
	}

	memoryTypeBits = ~0U;
	offset = 0;

	for ( i = 0; i < num_attachments; i++ ) {
#ifdef MIN_IMAGE_ALIGN
		VkDeviceSize alignment = MAX( attachments[ i ].reqs.alignment, MIN_IMAGE_ALIGN );
#else
		VkDeviceSize alignment = attachments[ i ].reqs.alignment;
#endif
		memoryTypeBits &= attachments[ i ].reqs.memoryTypeBits;
		offset = PAD( offset, alignment );
		attachments[ i ].memory_offset = offset;
		offset += attachments[ i ].reqs.size;
#ifdef _DEBUG
		ri.Printf( PRINT_ALL, S_COLOR_CYAN "[%i] type %i, size %i, align %i\n", i,
			attachments[ i ].reqs.memoryTypeBits,
			(int)attachments[ i ].reqs.size,
			(int)attachments[ i ].reqs.alignment );
#endif
	}

	if ( num_attachments == 1 && attachments[ 0 ].usage & VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT ) {
		// try lazy memory
		memoryTypeIndex = find_memory_type2( memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT | VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT, NULL );
		if ( memoryTypeIndex == ~0U ) {
			memoryTypeIndex = find_memory_type( vk.physical_device, memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT );
		}
	} else {
		memoryTypeIndex = find_memory_type( vk.physical_device, memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT );
	}

#ifdef _DEBUG
	ri.Printf( PRINT_ALL, "memory type bits: %04x\n", memoryTypeBits );
	ri.Printf( PRINT_ALL, "memory type index: %04x\n", memoryTypeIndex );
	ri.Printf( PRINT_ALL, "total size: %i\n", (int)offset );
#endif

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = offset;
	alloc_info.memoryTypeIndex = memoryTypeIndex;

	if ( num_attachments == 1 ) {
		if ( vk.dedicatedAllocation ) {
			Com_Memset( &alloc_info2, 0, sizeof( alloc_info2 ) );
			alloc_info2.sType =  VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO_KHR;
			alloc_info2.image = attachments[ 0 ].descriptor;
			alloc_info.pNext = &alloc_info2;
		}
	}

	// allocate and bind memory
	VK_CHECK( qvkAllocateMemory( vk.device, &alloc_info, NULL, &memory ) );

	vk.image_memory[ vk.image_memory_count++ ] = memory;

	for ( i = 0; i < num_attachments; i++ ) {

		VK_CHECK( qvkBindImageMemory( vk.device, attachments[i].descriptor, memory, attachments[i].memory_offset ) );

		// create color image view
		view_desc.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
		view_desc.pNext = NULL;
		view_desc.flags = 0;
		view_desc.image = attachments[ i ].descriptor;
		view_desc.viewType = VK_IMAGE_VIEW_TYPE_2D;
		view_desc.format = attachments[ i ].image_format;
		view_desc.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
		view_desc.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
		view_desc.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
		view_desc.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
		view_desc.subresourceRange.aspectMask = attachments[ i ].aspect_flags;
		view_desc.subresourceRange.baseMipLevel = 0;
		view_desc.subresourceRange.levelCount = 1;
		view_desc.subresourceRange.baseArrayLayer = 0;
		view_desc.subresourceRange.layerCount = 1;

		VK_CHECK( qvkCreateImageView( vk.device, &view_desc, NULL, attachments[ i ].image_view ) );
	}

	// perform layout transition
	command_buffer = begin_command_buffer();
	for ( i = 0; i < num_attachments; i++ ) {
		record_image_layout_transition( command_buffer,
			attachments[i].descriptor,
			attachments[i].aspect_flags,
			0, // src_access_flags
			VK_IMAGE_LAYOUT_UNDEFINED, // old_layout
			attachments[i].access_flags,
			attachments[i].image_layout
		);
	}
	end_command_buffer( command_buffer );

	num_attachments = 0;
}


static void vk_add_attachment_desc( VkImage desc, VkImageView *image_view, VkImageUsageFlags usage, VkMemoryRequirements *reqs, VkFormat image_format, VkImageAspectFlags aspect_flags, VkAccessFlags access_flags, VkImageLayout image_layout )
{
	if ( num_attachments >= ARRAY_LEN( attachments ) ) {
		ri.Error( ERR_FATAL, "Attachments array ovrerlow" );
	} else {
		attachments[ num_attachments ].descriptor = desc;
		attachments[ num_attachments ].image_view = image_view;
		attachments[ num_attachments ].usage = usage;
		attachments[ num_attachments ].reqs = *reqs;
		attachments[ num_attachments ].aspect_flags = aspect_flags;
		attachments[ num_attachments ].access_flags = access_flags;
		attachments[ num_attachments ].image_layout = image_layout;
		attachments[ num_attachments ].image_format = image_format;
		attachments[ num_attachments ].memory_offset = 0;
		num_attachments++;
	}
}


static void vk_get_image_memory_erquirements( VkImage image, VkMemoryRequirements *memory_requirements )
{
	if ( vk.dedicatedAllocation ) {
		VkMemoryRequirements2KHR memory_requirements2;
		VkImageMemoryRequirementsInfo2KHR image_requirements2;
		VkMemoryDedicatedRequirementsKHR mem_req2;

		Com_Memset( &mem_req2, 0, sizeof( mem_req2 ) );
		mem_req2.sType = VK_STRUCTURE_TYPE_MEMORY_DEDICATED_REQUIREMENTS_KHR;

		image_requirements2.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_REQUIREMENTS_INFO_2_KHR;
		image_requirements2.image = image;
		image_requirements2.pNext = NULL;

		Com_Memset( &memory_requirements2, 0, sizeof( memory_requirements2 ) );
		memory_requirements2.sType = VK_STRUCTURE_TYPE_MEMORY_REQUIREMENTS_2_KHR;
		memory_requirements2.pNext = &mem_req2;

		qvkGetImageMemoryRequirements2KHR( vk.device, &image_requirements2, &memory_requirements2 );

		*memory_requirements = memory_requirements2.memoryRequirements;
	} else {
		qvkGetImageMemoryRequirements( vk.device, image, memory_requirements );
	}
}


static void create_color_attachment( uint32_t width, uint32_t height, VkSampleCountFlagBits samples, VkFormat format,
	VkImageUsageFlags usage, VkImage *image, VkImageView *image_view, VkImageLayout image_layout, qboolean multisample )
{
	VkImageCreateInfo create_desc;
	VkMemoryRequirements memory_requirements;

	if ( multisample && !( usage & VK_IMAGE_USAGE_SAMPLED_BIT ) )
		usage |= VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT;

	// create color image
	create_desc.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	create_desc.pNext = NULL;
	create_desc.flags = 0;
	create_desc.imageType = VK_IMAGE_TYPE_2D;
	create_desc.format = format;
	create_desc.extent.width = width;
	create_desc.extent.height = height;
	create_desc.extent.depth = 1;
	create_desc.mipLevels = 1;
	create_desc.arrayLayers = 1;
	create_desc.samples = samples;
	create_desc.tiling = VK_IMAGE_TILING_OPTIMAL;
	create_desc.usage = usage;
	create_desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	create_desc.queueFamilyIndexCount = 0;
	create_desc.pQueueFamilyIndices = NULL;
	create_desc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	VK_CHECK( qvkCreateImage( vk.device, &create_desc, NULL, image ) );

	vk_get_image_memory_erquirements( *image, &memory_requirements );

	if ( multisample )
		vk_add_attachment_desc( *image, image_view, usage, &memory_requirements, format, VK_IMAGE_ASPECT_COLOR_BIT, VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT, image_layout );
	else
		vk_add_attachment_desc( *image, image_view, usage, &memory_requirements, format, VK_IMAGE_ASPECT_COLOR_BIT, VK_ACCESS_SHADER_READ_BIT, image_layout );
}


static void create_depth_attachment( uint32_t width, uint32_t height, VkSampleCountFlagBits samples, VkImage *image, VkImageView *image_view )
{
	VkImageCreateInfo create_desc;
	VkMemoryRequirements memory_requirements;
	VkImageAspectFlags image_aspect_flags;

	// create depth image
	create_desc.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	create_desc.pNext = NULL;
	create_desc.flags = 0;
	create_desc.imageType = VK_IMAGE_TYPE_2D;
	create_desc.format = vk.depth_format;
	create_desc.extent.width = width;
	create_desc.extent.height = height;
	create_desc.extent.depth = 1;
	create_desc.mipLevels = 1;
	create_desc.arrayLayers = 1;
	create_desc.samples = samples;
	create_desc.tiling = VK_IMAGE_TILING_OPTIMAL;
	create_desc.usage = VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT;
	create_desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	create_desc.queueFamilyIndexCount = 0;
	create_desc.pQueueFamilyIndices = NULL;
	create_desc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

	image_aspect_flags = VK_IMAGE_ASPECT_DEPTH_BIT;
	if ( r_stencilbits->integer )
		image_aspect_flags |= VK_IMAGE_ASPECT_STENCIL_BIT;

	VK_CHECK( qvkCreateImage( vk.device, &create_desc, NULL, image ) );

	vk_get_image_memory_erquirements( *image, &memory_requirements );

	vk_add_attachment_desc( *image, image_view, create_desc.usage, &memory_requirements, vk.depth_format, image_aspect_flags, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL );
}


static void vk_create_attachments( void )
{
	uint32_t i;

	vk_clear_attachment_pool();

	// It looks like resulting performance depends from order you're creating/allocating
	// memory for attachments in vulkan i.e. similar images grouped together will provide best results
	// so [resolve0][resolve1][msaa0][msaa1][depth0][depth1] is most optimal
	// while cases like [resolve0][depth0][color0][...] is the worst

	// TODO: preallocate first image chunk in attachment' memory pool?
	if ( vk.fboActive ) {

		VkImageUsageFlags usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;

		// bloom
		if ( r_bloom->integer ) {
			uint32_t width = gls.captureWidth;
			uint32_t height = gls.captureHeight;

			create_color_attachment( width, height, VK_SAMPLE_COUNT_1_BIT, vk.bloom_format,
				usage, &vk.bloom_image[0], &vk.bloom_image_view[0], VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, qfalse );

			for ( i = 1; i < ARRAY_LEN( vk.bloom_image ); i += 2 ) {
				width /= 2;
				height /= 2;
				create_color_attachment( width, height, VK_SAMPLE_COUNT_1_BIT, vk.bloom_format,
					usage, &vk.bloom_image[i+0], &vk.bloom_image_view[i+0], VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, qfalse );

				create_color_attachment( width, height, VK_SAMPLE_COUNT_1_BIT, vk.bloom_format,
					usage, &vk.bloom_image[i+1], &vk.bloom_image_view[i+1], VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, qfalse );
			}
		}

		// post-processing/msaa-resolve
		create_color_attachment( glConfig.vidWidth, glConfig.vidHeight, VK_SAMPLE_COUNT_1_BIT, vk.color_format,
			usage, &vk.color_image, &vk.color_image_view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, qfalse );

		// screenmap
		usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;

		if ( vk.screenMapSamples > VK_SAMPLE_COUNT_1_BIT ) {
			create_color_attachment( vk.screenMapWidth, vk.screenMapHeight, vk.screenMapSamples, vk.color_format,
				usage, &vk.screenMap.color_image_msaa, &vk.screenMap.color_image_view_msaa, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, qtrue );
		}

		create_color_attachment( vk.screenMapWidth, vk.screenMapHeight, VK_SAMPLE_COUNT_1_BIT, vk.color_format,
			usage, &vk.screenMap.color_image, &vk.screenMap.color_image_view, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL, qfalse );

		// screenmap depth
		create_depth_attachment( vk.screenMapWidth, vk.screenMapHeight, vk.screenMapSamples, &vk.screenMap.depth_image, &vk.screenMap.depth_image_view );

		if ( vk.msaaActive ) {
			create_color_attachment( glConfig.vidWidth, glConfig.vidHeight, vkSamples, vk.color_format,
				VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT, &vk.msaa_image, &vk.msaa_image_view, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL, qtrue );
		}

		if ( r_ext_supersample->integer ) {
			// capture buffer
			usage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT | VK_IMAGE_USAGE_TRANSFER_SRC_BIT;
			create_color_attachment( gls.captureWidth, gls.captureHeight, VK_SAMPLE_COUNT_1_BIT, vk.capture_format,
				usage, &vk.capture.image, &vk.capture.image_view, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, qfalse );
		}
	} // if ( vk.fboActive )

	//vk_alloc_attachments();

	create_depth_attachment( glConfig.vidWidth, glConfig.vidHeight, vkSamples, &vk.depth_image, &vk.depth_image_view );

	vk_alloc_attachments();

	for ( i = 0; i < vk.image_memory_count; i++ )
	{
		SET_OBJECT_NAME( vk.image_memory[i], va( "framebuffer memory chunk %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_MEMORY_EXT );
	}

	SET_OBJECT_NAME( vk.depth_image, "depth attachment", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT );
	SET_OBJECT_NAME( vk.depth_image_view, "depth attachment", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );

	SET_OBJECT_NAME( vk.color_image, "color attachment", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT );
	SET_OBJECT_NAME( vk.color_image_view, "color attachment", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );

	SET_OBJECT_NAME( vk.capture.image, "capture image", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );
	SET_OBJECT_NAME( vk.capture.image_view, "capture image view", VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );

	for ( i = 0; i < ARRAY_LEN( vk.bloom_image ); i++ )
	{
		SET_OBJECT_NAME( vk.bloom_image[i], va( "bloom attachment %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT );
		SET_OBJECT_NAME( vk.bloom_image_view[i], va( "bloom attachment %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );
	}
}


static void vk_create_framebuffers( void )
{
	VkImageView attachments[3];
	VkFramebufferCreateInfo desc;
	uint32_t n;

	desc.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.pAttachments = attachments;
	desc.layers = 1;

	for ( n = 0; n < vk.swapchain_image_count; n++ )
	{
		desc.renderPass = vk.render_pass.main;
		desc.attachmentCount = 2;
		if ( r_fbo->integer == 0 )
		{
			desc.width = gls.windowWidth;
			desc.height = gls.windowHeight;
			attachments[0] = vk.swapchain_image_views[n];
			attachments[1] = vk.depth_image_view;
			VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.main[n] ) );

			SET_OBJECT_NAME( vk.framebuffers.main[n], va( "framebuffer - main %i", n ), VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
		}
		else
		{
			// same framebuffer configuration for main and post-bloom render passes
			if ( n == 0 )
			{
				desc.width = glConfig.vidWidth;
				desc.height = glConfig.vidHeight;
				attachments[0] = vk.color_image_view;
				attachments[1] = vk.depth_image_view;
				if ( vk.msaaActive )
				{
					desc.attachmentCount = 3;
					attachments[2] = vk.msaa_image_view;
				}
				VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.main[n] ) );
				SET_OBJECT_NAME( vk.framebuffers.main[n], "framebuffer - main", VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
			}
			else
			{
				vk.framebuffers.main[n] = vk.framebuffers.main[0];
			}

			// gamma correction
			desc.renderPass = vk.render_pass.gamma;
			desc.attachmentCount = 1;
			desc.width = gls.windowWidth;
			desc.height = gls.windowHeight;
			attachments[0] = vk.swapchain_image_views[n];
			VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.gamma[n] ) );

			SET_OBJECT_NAME( vk.framebuffers.gamma[n], "framebuffer - gamma-correction", VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
		}
	}

	if ( vk.fboActive )
	{
		// screenmap
		desc.renderPass = vk.render_pass.screenmap;
		desc.attachmentCount = 2;
		desc.width = vk.screenMapWidth;
		desc.height = vk.screenMapHeight;
		attachments[0] = vk.screenMap.color_image_view;
		attachments[1] = vk.screenMap.depth_image_view;
		if ( vk.screenMapSamples > VK_SAMPLE_COUNT_1_BIT )
		{
			desc.attachmentCount = 3;
			attachments[2] = vk.screenMap.color_image_view_msaa;
		}
		VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.screenmap ) );
		SET_OBJECT_NAME( vk.framebuffers.screenmap, "framebuffer - screenmap", VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );

		if ( vk.capture.image != VK_NULL_HANDLE )
		{
			attachments[0] = vk.capture.image_view;

			desc.renderPass = vk.render_pass.capture;
			desc.pAttachments = attachments;
			desc.attachmentCount = 1;
			desc.width = gls.captureWidth;
			desc.height = gls.captureHeight;

			VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.capture ) );
			SET_OBJECT_NAME( vk.framebuffers.capture, "framebuffer - capture", VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
		}

		if ( r_bloom->integer )
		{
			uint32_t width = gls.captureWidth;
			uint32_t height = gls.captureHeight;

			// bloom color extraction
			desc.renderPass = vk.render_pass.bloom_extract;
			desc.width = width;
			desc.height = height;

			desc.attachmentCount = 1;
			attachments[0] = vk.bloom_image_view[0];

			VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.bloom_extract ) );

			SET_OBJECT_NAME( vk.framebuffers.bloom_extract, "framebuffer - bloom extraction", VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );

			for ( n = 0; n < ARRAY_LEN( vk.framebuffers.blur ); n += 2 )
			{
				width /= 2;
				height /= 2;

				desc.renderPass = vk.render_pass.blur[n];
				desc.width = width;
				desc.height = height;

				desc.attachmentCount = 1;

				attachments[0] = vk.bloom_image_view[n+0+1];
				VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.blur[n+0] ) );

				attachments[0] = vk.bloom_image_view[n+1+1];
				VK_CHECK( qvkCreateFramebuffer( vk.device, &desc, NULL, &vk.framebuffers.blur[n+1] ) );

				SET_OBJECT_NAME( vk.framebuffers.blur[n+0], va( "framebuffer - blur %i", n+0 ), VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
				SET_OBJECT_NAME( vk.framebuffers.blur[n+1], va( "framebuffer - blur %i", n+1 ), VK_DEBUG_REPORT_OBJECT_TYPE_FRAMEBUFFER_EXT );
			}
		}
	}
}


static void vk_create_sync_primitives( void ) {
	VkSemaphoreCreateInfo desc;
	VkFenceCreateInfo fence_desc;
	uint32_t i;

	desc.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;

	// all commands submitted
	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ )
	{
		desc.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;

		// swapchain image acquired
		VK_CHECK( qvkCreateSemaphore( vk.device, &desc, NULL, &vk.tess[ i ].image_acquired ) );

		VK_CHECK( qvkCreateSemaphore( vk.device, &desc, NULL, &vk.tess[i].rendering_finished ) );

		fence_desc.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
		fence_desc.pNext = NULL;
		fence_desc.flags = VK_FENCE_CREATE_SIGNALED_BIT; // so it can be used to start rendering

		VK_CHECK( qvkCreateFence( vk.device, &fence_desc, NULL, &vk.tess[i].rendering_finished_fence ) );
		vk.tess[i].waitForFence = qtrue;

		SET_OBJECT_NAME( vk.tess[i].image_acquired, va( "image_acquired semaphore %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_SEMAPHORE_EXT);
		SET_OBJECT_NAME( vk.tess[i].rendering_finished, va( "rendering_finished semaphore %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_SEMAPHORE_EXT );
		SET_OBJECT_NAME( vk.tess[i].rendering_finished_fence, va( "rendering_finished fence %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_FENCE_EXT );
	}
}


static void vk_destroy_sync_primitives( void  ) {
	uint32_t i;

	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ ) {
		qvkDestroySemaphore( vk.device, vk.tess[i].image_acquired, NULL );
		qvkDestroySemaphore( vk.device, vk.tess[i].rendering_finished, NULL );
		qvkDestroyFence( vk.device, vk.tess[i].rendering_finished_fence, NULL );
		vk.tess[i].waitForFence = qfalse;
	}
}


static void vk_destroy_framebuffers( void ) {
	uint32_t n;

	for ( n = 0; n < vk.swapchain_image_count; n++ ) {
		if ( vk.framebuffers.main[n] != VK_NULL_HANDLE ) {
			if ( !vk.fboActive || n == 0 ) {
				qvkDestroyFramebuffer( vk.device, vk.framebuffers.main[n], NULL );
			}
			vk.framebuffers.main[n] = VK_NULL_HANDLE;
		}
		if ( vk.framebuffers.gamma[n] != VK_NULL_HANDLE ) {
			qvkDestroyFramebuffer( vk.device, vk.framebuffers.gamma[n], NULL );
			vk.framebuffers.gamma[n] = VK_NULL_HANDLE;
		}
	}

	if ( vk.framebuffers.bloom_extract != VK_NULL_HANDLE ) {
		qvkDestroyFramebuffer( vk.device, vk.framebuffers.bloom_extract, NULL );
		vk.framebuffers.bloom_extract = VK_NULL_HANDLE;
	}

	if ( vk.framebuffers.screenmap != VK_NULL_HANDLE ) {
		qvkDestroyFramebuffer( vk.device, vk.framebuffers.screenmap, NULL );
		vk.framebuffers.screenmap = VK_NULL_HANDLE;
	}

	if ( vk.framebuffers.capture != VK_NULL_HANDLE ) {
		qvkDestroyFramebuffer( vk.device, vk.framebuffers.capture, NULL );
		vk.framebuffers.capture = VK_NULL_HANDLE;
	}

	for ( n = 0; n < ARRAY_LEN( vk.framebuffers.blur ); n++ ) {
		if ( vk.framebuffers.blur[n] != VK_NULL_HANDLE ) {
			qvkDestroyFramebuffer( vk.device, vk.framebuffers.blur[n], NULL );
			vk.framebuffers.blur[n] = VK_NULL_HANDLE;
		}
	}
}


static void vk_destroy_swapchain( void ) {
	uint32_t i;

	for ( i = 0; i < vk.swapchain_image_count; i++ ) {
		if ( vk.swapchain_image_views[i] != VK_NULL_HANDLE ) {
			qvkDestroyImageView( vk.device, vk.swapchain_image_views[i], NULL );
			vk.swapchain_image_views[i] = VK_NULL_HANDLE;
		}
	}

	qvkDestroySwapchainKHR( vk.device, vk.swapchain, NULL );
}

static void vk_destroy_attachments( void );
static void vk_destroy_render_passes( void );
static void vk_destroy_pipelines( qboolean resetCount );

static void vk_restart_swapchain( const char *funcname )
{
	uint32_t i;
	ri.Printf( PRINT_WARNING, "%s(): restarting swapchain...\n", funcname );

	vk_wait_idle();

	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ ) {
		qvkResetCommandBuffer( vk.tess[i].command_buffer, 0 );
	}

	vk_destroy_pipelines( qfalse );
	vk_destroy_framebuffers();
	vk_destroy_render_passes();
	vk_destroy_attachments();
	vk_destroy_swapchain();
	vk_destroy_sync_primitives();

	vk_select_surface_format( vk.physical_device, vk.surface );
	setup_surface_formats( vk.physical_device );

	vk_create_sync_primitives();
	vk_create_swapchain( vk.physical_device, vk.device, vk.surface, vk.present_format, &vk.swapchain );
	vk_create_attachments();
	vk_create_render_passes();
	vk_create_framebuffers();
	vk_create_bloom_pipelines();

	vk_update_attachment_descriptors();

	vk_update_post_process_pipelines();
}


static void vk_set_render_scale( void )
{
	if ( gls.windowWidth != glConfig.vidWidth || gls.windowHeight != glConfig.vidHeight )
	{
		if ( r_renderScale->integer > 0 )
		{
			int scaleMode = r_renderScale->integer - 1;
			if ( scaleMode & 1 )
			{
				// preserve aspect ratio (black bars on sides)
				float windowAspect = (float) gls.windowWidth / (float) gls.windowHeight;
				float renderAspect = (float) glConfig.vidWidth / (float) glConfig.vidHeight;
				if ( windowAspect >= renderAspect )
				{
					float scale = (float)gls.windowHeight / ( float ) glConfig.vidHeight;
					int bias = ( gls.windowWidth - scale * (float) glConfig.vidWidth ) / 2;
					vk.blitX0 += bias;
				}
				else
				{
					float scale = (float)gls.windowWidth / ( float ) glConfig.vidWidth;
					int bias = ( gls.windowHeight - scale * (float) glConfig.vidHeight ) / 2;
					vk.blitY0 += bias;
				}
			}
			// linear filtering
			if ( scaleMode & 2 )
				vk.blitFilter = GL_LINEAR;
			else
				vk.blitFilter = GL_NEAREST;
		}

		vk.windowAdjusted = qtrue;
	}

	if ( r_fbo->integer && r_ext_supersample->integer && !r_renderScale->integer )
	{
		vk.blitFilter = GL_LINEAR;
	}
}


void vk_initialize( void )
{
	char buf[64], driver_version[64];
	const char *vendor_name;
	VkPhysicalDeviceProperties props;
	uint32_t major;
	uint32_t minor;
	uint32_t patch;
	uint32_t maxSize;
	uint32_t i;

	init_vulkan_library();

	qvkGetDeviceQueue( vk.device, vk.queue_family_index, 0, &vk.queue );

	qvkGetPhysicalDeviceProperties( vk.physical_device, &props );

	vk.cmd = vk.tess + 0;
	vk.uniform_alignment = props.limits.minUniformBufferOffsetAlignment;
	vk.uniform_item_size = PAD( sizeof( vkUniform_t ), vk.uniform_alignment );

	// for flare visibility tests
	vk.storage_alignment = MAX( props.limits.minStorageBufferOffsetAlignment, sizeof( uint32_t ) );

	vk.maxAnisotropy = props.limits.maxSamplerAnisotropy;

	vk.blitFilter = GL_NEAREST;
	vk.windowAdjusted = qfalse;
	vk.blitX0 = vk.blitY0 = 0;

	vk_set_render_scale();

	if ( r_fbo->integer )
	{
		vk.fboActive = qtrue;
		if ( r_ext_multisample->integer )
		{
			vk.msaaActive = qtrue;
		}
	}

	// multisampling

	vkMaxSamples = MIN( props.limits.sampledImageColorSampleCounts, props.limits.sampledImageDepthSampleCounts );

	if ( /*vk.fboActive &&*/ vk.msaaActive ) {
		VkSampleCountFlags mask = vkMaxSamples;
		vkSamples = MAX( log2pad( r_ext_multisample->integer, 1 ), VK_SAMPLE_COUNT_2_BIT );
		while ( vkSamples > mask )
				vkSamples >>= 1;
		ri.Printf( PRINT_ALL, "...using %ix MSAA\n", vkSamples );
	} else {
		vkSamples = VK_SAMPLE_COUNT_1_BIT;
	}

	vk.screenMapSamples = MIN( vkMaxSamples, VK_SAMPLE_COUNT_4_BIT );

	vk.screenMapWidth = (float) glConfig.vidWidth / 16.0;
	if ( vk.screenMapWidth < 4 )
		vk.screenMapWidth = 4;

	vk.screenMapHeight = (float) glConfig.vidHeight / 16.0;
	if ( vk.screenMapHeight < 4 )
		vk.screenMapHeight = 4;

	// fill glConfig information

	// maxTextureSize must not exceed IMAGE_CHUNK_SIZE
	maxSize = sqrtf( IMAGE_CHUNK_SIZE / 4 );
	// round down to next power of 2
	glConfig.maxTextureSize = MIN( props.limits.maxImageDimension2D, log2pad( maxSize, 0 ) );

	if ( glConfig.maxTextureSize > MAX_TEXTURE_SIZE )
		glConfig.maxTextureSize = MAX_TEXTURE_SIZE; // ResampleTexture() relies on that maximum

	// default chunk size, may be doubled on demand
	vk.image_chunk_size = IMAGE_CHUNK_SIZE;

	vk.maxLod = 1 + Q_log2( glConfig.maxTextureSize );

	if ( props.limits.maxPerStageDescriptorSamplers != 0xFFFFFFFF )
		glConfig.numTextureUnits = props.limits.maxPerStageDescriptorSamplers;
	else
		glConfig.numTextureUnits = props.limits.maxBoundDescriptorSets;
	if ( glConfig.numTextureUnits > MAX_TEXTURE_UNITS )
		glConfig.numTextureUnits = MAX_TEXTURE_UNITS;

	vk.maxBoundDescriptorSets = props.limits.maxBoundDescriptorSets;

	glConfig.textureEnvAddAvailable = qtrue;
	glConfig.textureCompression = TC_NONE;

	major = VK_VERSION_MAJOR(props.apiVersion);
	minor = VK_VERSION_MINOR(props.apiVersion);
	patch = VK_VERSION_PATCH(props.apiVersion);

	// decode driver version
	switch ( props.vendorID ) {
		case 0x10DE: // NVidia
			Com_sprintf( driver_version, sizeof( driver_version ), "%i.%i.%i.%i",
				(props.driverVersion >> 22) & 0x3FF,
				(props.driverVersion >> 14) & 0x0FF,
				(props.driverVersion >> 6) & 0x0FF,
				(props.driverVersion >> 0) & 0x03F );
			break;
#ifdef _WIN32
		case 0x8086: // Intel
			Com_sprintf( driver_version, sizeof( driver_version ), "%i.%i",
				(props.driverVersion >> 14),
				(props.driverVersion >> 0) & 0x3FFF );
			break;
#endif
		default:
			Com_sprintf( driver_version, sizeof( driver_version ), "%i.%i.%i",
				(props.driverVersion >> 22),
				(props.driverVersion >> 12) & 0x3FF,
				(props.driverVersion >> 0) & 0xFFF );
	}

	Com_sprintf( glConfig.version_string, sizeof( glConfig.version_string ), "API: %i.%i.%i, Driver: %s",
		major, minor, patch, driver_version );

	vk.offscreenRender = qtrue;

	if ( props.vendorID == 0x1002 ) {
		vendor_name = "Advanced Micro Devices, Inc.";
	} else if ( props.vendorID == 0x106B ) {
		vendor_name = "Apple Inc.";
	} else if ( props.vendorID == 0x10DE ) {
		// https://github.com/SaschaWillems/Vulkan/issues/493
		// we can't render to offscreen presentation surfaces on nvidia
		vk.offscreenRender = qfalse;
		vendor_name = "NVIDIA";
	} else if ( props.vendorID == 0x14E4 ) {
		vendor_name = "Broadcom Inc.";
	} else if ( props.vendorID == 0x1AE0 ) {
		vendor_name = "Google Inc.";
	} else if ( props.vendorID == 0x8086 ) {
		vendor_name = "Intel Corporation";
	} else if ( props.vendorID == VK_VENDOR_ID_MESA ) {
		vendor_name = "MESA";
	} else {
		Com_sprintf( buf, sizeof( buf ), "VendorID: %04x", props.vendorID );
		vendor_name = buf;
	}

	Q_strncpyz( glConfig.vendor_string, vendor_name, sizeof( glConfig.vendor_string ) );
	Q_strncpyz( glConfig.renderer_string, renderer_name( &props ), sizeof( glConfig.renderer_string ) );

	SET_OBJECT_NAME( (intptr_t)vk.device, glConfig.renderer_string, VK_DEBUG_REPORT_OBJECT_TYPE_DEVICE_EXT );

	//
	// Sync primitives.
	//
	vk_create_sync_primitives();

	//
	// Command pool.
	//
	{
		VkCommandPoolCreateInfo desc;

		desc.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = VK_COMMAND_POOL_CREATE_TRANSIENT_BIT | VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
		desc.queueFamilyIndex = vk.queue_family_index;

		VK_CHECK(qvkCreateCommandPool(vk.device, &desc, NULL, &vk.command_pool));

		SET_OBJECT_NAME( vk.command_pool, "command pool", VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_POOL_EXT );
	}

	//
	// Command buffers and color attachments.
	//
	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ )
	{
		VkCommandBufferAllocateInfo alloc_info;

		alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
		alloc_info.pNext = NULL;
		alloc_info.commandPool = vk.command_pool;
		alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
		alloc_info.commandBufferCount = 1;

		VK_CHECK( qvkAllocateCommandBuffers( vk.device, &alloc_info, &vk.tess[i].command_buffer ) );

		//SET_OBJECT_NAME( vk.tess[i].command_buffer, va( "command buffer %i", i ), VK_DEBUG_REPORT_OBJECT_TYPE_COMMAND_BUFFER_EXT );
	}

	//
	// Descriptor pool.
	//
	{
		VkDescriptorPoolSize pool_size[3];
		VkDescriptorPoolCreateInfo desc;
		uint32_t i, maxSets;

		pool_size[0].type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
		pool_size[0].descriptorCount = MAX_DRAWIMAGES + 1 + 1 + 1 + VK_NUM_BLOOM_PASSES * 2; // color, screenmap, bloom descriptors

		pool_size[1].type = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
		pool_size[1].descriptorCount = NUM_COMMAND_BUFFERS;

		//pool_size[2].type = VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT;
		//pool_size[2].descriptorCount = NUM_COMMAND_BUFFERS;

		pool_size[2].type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC;
		pool_size[2].descriptorCount = 1;

		for ( i = 0, maxSets = 0; i < ARRAY_LEN( pool_size ); i++ ) {
			maxSets += pool_size[i].descriptorCount;
		}

		desc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.maxSets = maxSets;
		desc.poolSizeCount = ARRAY_LEN( pool_size );
		desc.pPoolSizes = pool_size;

		VK_CHECK( qvkCreateDescriptorPool( vk.device, &desc, NULL, &vk.descriptor_pool ) );
	}

	//
	// Descriptor set layout.
	//
	vk_create_layout_binding( 0, VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, VK_SHADER_STAGE_FRAGMENT_BIT, &vk.set_layout_sampler );
	vk_create_layout_binding( 0, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, VK_SHADER_STAGE_FRAGMENT_BIT | VK_SHADER_STAGE_VERTEX_BIT, &vk.set_layout_uniform );
	vk_create_layout_binding( 0, VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, VK_SHADER_STAGE_FRAGMENT_BIT, &vk.set_layout_storage );
	//vk_create_layout_binding( 0, VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, VK_SHADER_STAGE_FRAGMENT_BIT, &vk.set_layout_input );

	//
	// Pipeline layouts.
	//
	{
		VkDescriptorSetLayout set_layouts[6];
		VkPipelineLayoutCreateInfo desc;
		VkPushConstantRange push_range;

		push_range.stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
		push_range.offset = 0;
		push_range.size = 64; // 16 floats

		// standard pipelines

		set_layouts[0] = vk.set_layout_storage; // storage for testing flare visibility
		set_layouts[1] = vk.set_layout_uniform; // fog/dlight parameters
		set_layouts[2] = vk.set_layout_sampler; // diffuse
		set_layouts[3] = vk.set_layout_sampler; // lightmap / fog-only
		set_layouts[4] = vk.set_layout_sampler; // blend
		set_layouts[5] = vk.set_layout_sampler; // collapsed fog texture

		desc.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.setLayoutCount = (vk.maxBoundDescriptorSets >= 6) ? 6 : 4;
		desc.pSetLayouts = set_layouts;
		desc.pushConstantRangeCount = 1;
		desc.pPushConstantRanges = &push_range;

		VK_CHECK(qvkCreatePipelineLayout(vk.device, &desc, NULL, &vk.pipeline_layout));

		// flare test pipeline
#if 0
		set_layouts[0] = vk.set_layout_storage; // dynamic storage buffer

		desc.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.setLayoutCount = 1;
		desc.pSetLayouts = set_layouts;
		desc.pushConstantRangeCount = 1;
		desc.pPushConstantRanges = &push_range;

		VK_CHECK(qvkCreatePipelineLayout(vk.device, &desc, NULL, &vk.pipeline_layout_storage));
#endif

		// post-processing pipeline
		set_layouts[0] = vk.set_layout_sampler; // sampler
		set_layouts[1] = vk.set_layout_sampler; // sampler
		set_layouts[2] = vk.set_layout_sampler; // sampler
		set_layouts[3] = vk.set_layout_sampler; // sampler

		desc.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.setLayoutCount = 1;
		desc.pSetLayouts = set_layouts;
		desc.pushConstantRangeCount = 0;
		desc.pPushConstantRanges = NULL;

		VK_CHECK( qvkCreatePipelineLayout( vk.device, &desc, NULL, &vk.pipeline_layout_post_process ) );

		desc.setLayoutCount = VK_NUM_BLOOM_PASSES;

		VK_CHECK( qvkCreatePipelineLayout( vk.device, &desc, NULL, &vk.pipeline_layout_blend ) );

		SET_OBJECT_NAME( vk.pipeline_layout, "pipeline layout - main", VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_LAYOUT_EXT );
		SET_OBJECT_NAME( vk.pipeline_layout_post_process, "pipeline layout - post-processing", VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_LAYOUT_EXT );
		SET_OBJECT_NAME( vk.pipeline_layout_blend, "pipeline layout - blend", VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_LAYOUT_EXT );
	}

	vk.geometry_buffer_size_new = VERTEX_BUFFER_SIZE;
	vk_create_geometry_buffers( vk.geometry_buffer_size_new );
	vk.geometry_buffer_size_new = 0;

	vk_create_storage_buffer( MAX_FLARES * vk.storage_alignment );

	vk_create_shader_modules();

	{
		VkPipelineCacheCreateInfo ci;
		Com_Memset( &ci, 0, sizeof( ci ) );
		ci.sType = VK_STRUCTURE_TYPE_PIPELINE_CACHE_CREATE_INFO;
		VK_CHECK( qvkCreatePipelineCache( vk.device, &ci, NULL, &vk.pipelineCache ) );
	}

	vk.renderPassIndex = RENDER_PASS_MAIN; // default render pass

	// swapchain
	vk.initSwapchainLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
	//vk.initSwapchainLayout = VK_IMAGE_LAYOUT_UNDEFINED;
	vk_create_swapchain( vk.physical_device, vk.device, vk.surface, vk.present_format, &vk.swapchain );

	// color/depth attachments
	vk_create_attachments();

	// renderpasses
	vk_create_render_passes();

	// framebuffers for each swapchain image
	vk_create_framebuffers();

	vk.active = qtrue;
}


void vk_create_pipelines( void )
{
	vk_alloc_persistent_pipelines();

	vk.pipelines_world_base = vk.pipelines_count;

	vk_create_bloom_pipelines();
}


static void vk_destroy_attachments( void )
{
	uint32_t i;

	if ( vk.bloom_image[0] ) {
		for ( i = 0; i < ARRAY_LEN( vk.bloom_image ); i++ ) {
			qvkDestroyImage( vk.device, vk.bloom_image[i], NULL );
			qvkDestroyImageView( vk.device, vk.bloom_image_view[i], NULL );
			vk.bloom_image[i] = VK_NULL_HANDLE;
			vk.bloom_image_view[i] = VK_NULL_HANDLE;
		}
	}

	if ( vk.color_image ) {
		qvkDestroyImage( vk.device, vk.color_image, NULL );
		qvkDestroyImageView( vk.device, vk.color_image_view, NULL );
		vk.color_image = VK_NULL_HANDLE;
		vk.color_image_view = VK_NULL_HANDLE;
	}

	if ( vk.msaa_image ) {
		qvkDestroyImage( vk.device, vk.msaa_image, NULL );
		qvkDestroyImageView( vk.device, vk.msaa_image_view, NULL );
		vk.msaa_image = VK_NULL_HANDLE;
		vk.msaa_image_view = VK_NULL_HANDLE;
	}

	qvkDestroyImage( vk.device, vk.depth_image, NULL );
	qvkDestroyImageView( vk.device, vk.depth_image_view, NULL );
	vk.depth_image = VK_NULL_HANDLE;
	vk.depth_image_view = VK_NULL_HANDLE;

	if ( vk.screenMap.color_image ) {
		qvkDestroyImage( vk.device, vk.screenMap.color_image, NULL );
		qvkDestroyImageView( vk.device, vk.screenMap.color_image_view, NULL );
		vk.screenMap.color_image = VK_NULL_HANDLE;
		vk.screenMap.color_image_view = VK_NULL_HANDLE;
	}

	if ( vk.screenMap.color_image_msaa ) {
		qvkDestroyImage( vk.device, vk.screenMap.color_image_msaa, NULL );
		qvkDestroyImageView( vk.device, vk.screenMap.color_image_view_msaa, NULL );
		vk.screenMap.color_image_msaa = VK_NULL_HANDLE;
		vk.screenMap.color_image_view_msaa = VK_NULL_HANDLE;
	}

	if ( vk.screenMap.depth_image ) {
		qvkDestroyImage( vk.device, vk.screenMap.depth_image, NULL );
		qvkDestroyImageView( vk.device, vk.screenMap.depth_image_view, NULL );
		vk.screenMap.depth_image = VK_NULL_HANDLE;
		vk.screenMap.depth_image_view = VK_NULL_HANDLE;
	}

	if ( vk.capture.image ) {
		qvkDestroyImage( vk.device, vk.capture.image, NULL );
		qvkDestroyImageView( vk.device, vk.capture.image_view, NULL );
		vk.capture.image = VK_NULL_HANDLE;
		vk.capture.image_view = VK_NULL_HANDLE;
	}

	for ( i = 0; i < vk.image_memory_count; i++ ) {
		qvkFreeMemory( vk.device, vk.image_memory[i], NULL );
	}

	vk.image_memory_count = 0;
}


static void vk_destroy_render_passes( void )
{
	uint32_t i;

	if ( vk.render_pass.main != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.main, NULL );
		vk.render_pass.main = VK_NULL_HANDLE;
	}

	if ( vk.render_pass.bloom_extract != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.bloom_extract, NULL );
		vk.render_pass.bloom_extract = VK_NULL_HANDLE;
	}

	for ( i = 0; i < ARRAY_LEN( vk.render_pass.blur ); i++ ) {
		if ( vk.render_pass.blur[i] != VK_NULL_HANDLE ) {
			qvkDestroyRenderPass( vk.device, vk.render_pass.blur[i], NULL );
			vk.render_pass.blur[i] = VK_NULL_HANDLE;
		}
	}

	if ( vk.render_pass.post_bloom != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.post_bloom, NULL );
		vk.render_pass.post_bloom = VK_NULL_HANDLE;
	}

	if ( vk.render_pass.screenmap != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.screenmap, NULL );
		vk.render_pass.screenmap = VK_NULL_HANDLE;
	}

	if ( vk.render_pass.gamma != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.gamma, NULL );
		vk.render_pass.gamma = VK_NULL_HANDLE;
	}

	if ( vk.render_pass.capture != VK_NULL_HANDLE ) {
		qvkDestroyRenderPass( vk.device, vk.render_pass.capture, NULL );
		vk.render_pass.capture = VK_NULL_HANDLE;
	}
}


static void vk_destroy_pipelines( qboolean reset )
{
	uint32_t i, j;

	for ( i = 0; i < vk.pipelines_count; i++ ) {
		for ( j = 0; j < RENDER_PASS_COUNT; j++ ) {
			if ( vk.pipelines[i].handle[j] != VK_NULL_HANDLE ) {
				qvkDestroyPipeline( vk.device, vk.pipelines[i].handle[j], NULL );
				vk.pipelines[i].handle[j] = VK_NULL_HANDLE;
				vk.pipeline_create_count--;
			}
		}
	}

	if ( reset ) {
		Com_Memset( &vk.pipelines, 0, sizeof( vk.pipelines ) );
		vk.pipelines_count = 0;
	}

	if ( vk.gamma_pipeline ) {
		qvkDestroyPipeline( vk.device, vk.gamma_pipeline, NULL );
		vk.gamma_pipeline = VK_NULL_HANDLE;
	}

	if ( vk.capture_pipeline ) {
		qvkDestroyPipeline( vk.device, vk.capture_pipeline, NULL );
		vk.capture_pipeline = VK_NULL_HANDLE;
	}

	if ( vk.bloom_extract_pipeline != VK_NULL_HANDLE ) {
		qvkDestroyPipeline( vk.device, vk.bloom_extract_pipeline, NULL );
		vk.bloom_extract_pipeline = VK_NULL_HANDLE;
	}

	if ( vk.bloom_blend_pipeline != VK_NULL_HANDLE ) {
		qvkDestroyPipeline( vk.device, vk.bloom_blend_pipeline, NULL );
		vk.bloom_blend_pipeline = VK_NULL_HANDLE;
	}

	for ( i = 0; i < ARRAY_LEN( vk.blur_pipeline ); i++ ) {
		if ( vk.blur_pipeline[i] != VK_NULL_HANDLE ) {
			qvkDestroyPipeline( vk.device, vk.blur_pipeline[i], NULL );
			vk.blur_pipeline[i] = VK_NULL_HANDLE;
		}
	}
}


void vk_shutdown( void )
{
	int i, j, k, l;

	if ( !qvkQueuePresentKHR ) {// not fully initialized
		goto __cleanup;
	}

	vk_destroy_framebuffers();

	vk_destroy_pipelines( qtrue ); // reset counter

	vk_destroy_render_passes();

	vk_destroy_attachments();

	vk_destroy_swapchain();

	if ( vk.pipelineCache != VK_NULL_HANDLE ) {
		qvkDestroyPipelineCache( vk.device, vk.pipelineCache, NULL );
		vk.pipelineCache = VK_NULL_HANDLE;
	}

	qvkDestroyCommandPool( vk.device, vk.command_pool, NULL );

	qvkDestroyDescriptorPool(vk.device, vk.descriptor_pool, NULL);

	qvkDestroyDescriptorSetLayout(vk.device, vk.set_layout_sampler, NULL);
	qvkDestroyDescriptorSetLayout(vk.device, vk.set_layout_uniform, NULL);
	qvkDestroyDescriptorSetLayout(vk.device, vk.set_layout_storage, NULL);

	qvkDestroyPipelineLayout(vk.device, vk.pipeline_layout, NULL);
	//qvkDestroyPipelineLayout(vk.device, vk.pipeline_layout_storage, NULL);
	qvkDestroyPipelineLayout(vk.device, vk.pipeline_layout_post_process, NULL);
	qvkDestroyPipelineLayout(vk.device, vk.pipeline_layout_blend, NULL);

#ifdef USE_VBO
	vk_release_vbo();
#endif

	vk_release_geometry_buffers();

	vk_destroy_sync_primitives();

	qvkDestroyBuffer( vk.device, vk.storage.buffer, NULL );
	qvkFreeMemory( vk.device, vk.storage.memory, NULL );

	for ( i = 0; i < 3; i++ ) {
		for ( j = 0; j < 2; j++ ) {
			for ( k = 0; k < 2; k++ ) {
				for ( l = 0; l < 2; l++ ) {
					if ( vk.modules.vert.gen[i][j][k][l] != VK_NULL_HANDLE ) {
						qvkDestroyShaderModule( vk.device, vk.modules.vert.gen[i][j][k][l], NULL );
						vk.modules.vert.gen[i][j][k][l] = VK_NULL_HANDLE;
					}
				}
			}
		}
	}
	for ( i = 0; i < 3; i++ ) {
		for ( j = 0; j < 2; j++ ) {
			for ( k = 0; k < 2; k++ ) {
				if ( vk.modules.frag.gen[i][j][k] != VK_NULL_HANDLE ) {
					qvkDestroyShaderModule( vk.device, vk.modules.frag.gen[i][j][k], NULL );
					vk.modules.frag.gen[i][j][k] = VK_NULL_HANDLE;
				}
			}
		}
	}
	for ( i = 0; i < 2; i++ ) {
		if ( vk.modules.vert.light[i] != VK_NULL_HANDLE ) {
			qvkDestroyShaderModule( vk.device, vk.modules.vert.light[i], NULL );
			vk.modules.vert.light[i] = VK_NULL_HANDLE;
		}
		for ( j = 0; j < 2; j++ ) {
			if ( vk.modules.frag.light[i][j] != VK_NULL_HANDLE ) {
				qvkDestroyShaderModule( vk.device, vk.modules.frag.light[i][j], NULL );
				vk.modules.frag.light[i][j] = VK_NULL_HANDLE;
			}
		}
	}
	qvkDestroyShaderModule( vk.device, vk.modules.vert.gen0_ident, NULL );
	qvkDestroyShaderModule( vk.device, vk.modules.frag.gen0_ident, NULL );

	qvkDestroyShaderModule( vk.device, vk.modules.frag.gen0_df, NULL );

	qvkDestroyShaderModule( vk.device, vk.modules.color_fs, NULL );
	qvkDestroyShaderModule( vk.device, vk.modules.color_vs, NULL );

	qvkDestroyShaderModule(vk.device, vk.modules.fog_vs, NULL);
	qvkDestroyShaderModule(vk.device, vk.modules.fog_fs, NULL);

	qvkDestroyShaderModule(vk.device, vk.modules.dot_vs, NULL);
	qvkDestroyShaderModule(vk.device, vk.modules.dot_fs, NULL);

	qvkDestroyShaderModule(vk.device, vk.modules.bloom_fs, NULL);
	qvkDestroyShaderModule(vk.device, vk.modules.blur_fs, NULL);
	qvkDestroyShaderModule(vk.device, vk.modules.blend_fs, NULL);

	qvkDestroyShaderModule(vk.device, vk.modules.gamma_vs, NULL);
	qvkDestroyShaderModule(vk.device, vk.modules.gamma_fs, NULL);

__cleanup:
	if ( vk.device != VK_NULL_HANDLE )
		qvkDestroyDevice( vk.device, NULL );

	if ( vk.surface != VK_NULL_HANDLE )
		qvkDestroySurfaceKHR( vk.instance, vk.surface, NULL );

#ifdef USE_VK_VALIDATION
	if ( qvkDestroyDebugReportCallbackEXT && vk.debug_callback )
		qvkDestroyDebugReportCallbackEXT( vk.instance, vk.debug_callback, NULL );
#endif

	if ( vk.instance != VK_NULL_HANDLE )
		qvkDestroyInstance( vk.instance, NULL );

	Com_Memset( &vk, 0, sizeof( vk ) );

	deinit_vulkan_library();
}


void vk_wait_idle( void )
{
	VK_CHECK( qvkDeviceWaitIdle( vk.device ) );
}


void vk_release_resources( void ) {
	int i, j;

	vk_wait_idle();

	for (i = 0; i < vk_world.num_image_chunks; i++)
		qvkFreeMemory(vk.device, vk_world.image_chunks[i].memory, NULL);

	if (vk_world.staging_buffer != VK_NULL_HANDLE)
		qvkDestroyBuffer(vk.device, vk_world.staging_buffer, NULL);

	if (vk_world.staging_buffer_memory != VK_NULL_HANDLE)
		qvkFreeMemory(vk.device, vk_world.staging_buffer_memory, NULL);

	for (i = 0; i < vk_world.num_samplers; i++)
		qvkDestroySampler(vk.device, vk_world.samplers[i], NULL);

	for ( i = vk.pipelines_world_base; i < vk.pipelines_count; i++ ) {
		for ( j = 0; j < RENDER_PASS_COUNT; j++ ) {
			if ( vk.pipelines[i].handle[j] != VK_NULL_HANDLE ) {
				qvkDestroyPipeline( vk.device, vk.pipelines[i].handle[j], NULL );
				vk.pipelines[i].handle[j] = VK_NULL_HANDLE;
				vk.pipeline_create_count--;
			}
		}
		Com_Memset( &vk.pipelines[i], 0, sizeof( vk.pipelines[0] ) );
	}
	vk.pipelines_count = vk.pipelines_world_base;

	VK_CHECK( qvkResetDescriptorPool( vk.device, vk.descriptor_pool, 0 ) );

	if ( vk_world.num_image_chunks > 1 ) {
		// if we allocated more than 2 image chunks - use doubled default size
		vk.image_chunk_size = (IMAGE_CHUNK_SIZE * 2);
	} else if ( vk_world.num_image_chunks == 1 ) {
		// otherwise set to default if used less than a half
		if ( vk_world.image_chunks[0].used < ( IMAGE_CHUNK_SIZE - (IMAGE_CHUNK_SIZE / 10) ) ) {
			vk.image_chunk_size = IMAGE_CHUNK_SIZE;
		}
	}

	Com_Memset( &vk_world, 0, sizeof( vk_world ) );

	// Reset geometry buffers offsets
	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ ) {
		vk.tess[i].uniform_read_offset = 0;
		vk.tess[i].vertex_buffer_offset = 0;
	}

	Com_Memset( vk.cmd->buf_offset, 0, sizeof( vk.cmd->buf_offset ) );
	Com_Memset( vk.cmd->vbo_offset, 0, sizeof( vk.cmd->vbo_offset ) );

	Com_Memset( &vk.stats, 0, sizeof( vk.stats ) );
}


static void record_buffer_memory_barrier(VkCommandBuffer cb, VkBuffer buffer, VkDeviceSize size,
		VkPipelineStageFlags src_stages, VkPipelineStageFlags dst_stages,
		VkAccessFlags src_access, VkAccessFlags dst_access) {

	VkBufferMemoryBarrier barrier;
	barrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
	barrier.pNext = NULL;
	barrier.srcAccessMask = src_access;
	barrier.dstAccessMask = dst_access;
	barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
	barrier.buffer = buffer;
	barrier.offset = 0;
	barrier.size = size;

	qvkCmdPipelineBarrier( cb, src_stages, dst_stages, 0, 0, NULL, 1, &barrier, 0, NULL );
}


void vk_create_image( int width, int height, VkFormat format, int mip_levels, image_t *image ) {
	// create image
	{
		VkImageCreateInfo desc;

		desc.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.imageType = VK_IMAGE_TYPE_2D;
		desc.format = format;
		desc.extent.width = width;
		desc.extent.height = height;
		desc.extent.depth = 1;
		desc.mipLevels = mip_levels;
		desc.arrayLayers = 1;
		desc.samples = VK_SAMPLE_COUNT_1_BIT;
		desc.tiling = VK_IMAGE_TILING_OPTIMAL;
		desc.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
		desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
		desc.queueFamilyIndexCount = 0;
		desc.pQueueFamilyIndices = NULL;
		desc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

		VK_CHECK( qvkCreateImage( vk.device, &desc, NULL, &image->handle ) );

		allocate_and_bind_image_memory( image->handle );
	}

	// create image view
	{
		VkImageViewCreateInfo desc;

		desc.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
		desc.pNext = NULL;
		desc.flags = 0;
		desc.image = image->handle;
		desc.viewType = VK_IMAGE_VIEW_TYPE_2D;
		desc.format = format;
		desc.components.r = VK_COMPONENT_SWIZZLE_IDENTITY;
		desc.components.g = VK_COMPONENT_SWIZZLE_IDENTITY;
		desc.components.b = VK_COMPONENT_SWIZZLE_IDENTITY;
		desc.components.a = VK_COMPONENT_SWIZZLE_IDENTITY;
		desc.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		desc.subresourceRange.baseMipLevel = 0;
		desc.subresourceRange.levelCount = VK_REMAINING_MIP_LEVELS;
		desc.subresourceRange.baseArrayLayer = 0;
		desc.subresourceRange.layerCount = 1;

		VK_CHECK( qvkCreateImageView( vk.device, &desc, NULL, &image->view ) );
	}

	// create associated descriptor set
	if ( image->descriptor == VK_NULL_HANDLE )
	{
		VkDescriptorSetAllocateInfo desc;

		desc.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
		desc.pNext = NULL;
		desc.descriptorPool = vk.descriptor_pool;
		desc.descriptorSetCount = 1;
		desc.pSetLayouts = &vk.set_layout_sampler;

		VK_CHECK( qvkAllocateDescriptorSets( vk.device, &desc, &image->descriptor ) );
	}

	vk_update_descriptor_set( image, mip_levels > 1 ? qtrue : qfalse );

	SET_OBJECT_NAME( image->handle, image->imgName, VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_EXT );
	SET_OBJECT_NAME( image->view, image->imgName, VK_DEBUG_REPORT_OBJECT_TYPE_IMAGE_VIEW_EXT );
	SET_OBJECT_NAME( image->descriptor, image->imgName, VK_DEBUG_REPORT_OBJECT_TYPE_DESCRIPTOR_SET_EXT );
}


void vk_upload_image_data( VkImage image, int x, int y, int width, int height, qboolean mipmap, const uint8_t *pixels, int bytes_per_pixel ) {

	VkCommandBuffer command_buffer;
	VkBufferImageCopy regions[16];
	VkBufferImageCopy region;

	int num_regions = 0;
	int buffer_size = 0;

	while (qtrue) {
		Com_Memset(&region, 0, sizeof(region));
		region.bufferOffset = buffer_size;
		region.bufferRowLength = 0;
		region.bufferImageHeight = 0;
		region.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		region.imageSubresource.mipLevel = num_regions;
		region.imageSubresource.baseArrayLayer = 0;
		region.imageSubresource.layerCount = 1;
		region.imageOffset.x = x;
		region.imageOffset.y = y;
		region.imageOffset.z = 0;
		region.imageExtent.width = width;
		region.imageExtent.height = height;
		region.imageExtent.depth = 1;

		regions[num_regions] = region;
		num_regions++;

		buffer_size += width * height * bytes_per_pixel;

		if ( !mipmap || (width == 1 && height == 1) || num_regions >= ARRAY_LEN( regions ) )
			break;

		x >>= 1;
		y >>= 1;

		width >>= 1;
		if (width < 1) width = 1;

		height >>= 1;
		if (height < 1) height = 1;
	}

	ensure_staging_buffer_allocation(buffer_size);
	Com_Memcpy( vk_world.staging_buffer_ptr, pixels, buffer_size );

	command_buffer = begin_command_buffer();

	record_buffer_memory_barrier( command_buffer, vk_world.staging_buffer, VK_WHOLE_SIZE, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_HOST_WRITE_BIT, VK_ACCESS_TRANSFER_READ_BIT );
	record_image_layout_transition( command_buffer, image, VK_IMAGE_ASPECT_COLOR_BIT, 0, VK_IMAGE_LAYOUT_UNDEFINED, VK_ACCESS_TRANSFER_WRITE_BIT, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL );
	qvkCmdCopyBufferToImage( command_buffer, vk_world.staging_buffer, image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, num_regions, regions );
	record_image_layout_transition( command_buffer, image, VK_IMAGE_ASPECT_COLOR_BIT, VK_ACCESS_TRANSFER_WRITE_BIT, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_ACCESS_SHADER_READ_BIT, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL );

	end_command_buffer( command_buffer );
}


void vk_update_descriptor_set( image_t *image, qboolean mipmap ) {
	Vk_Sampler_Def sampler_def;
	VkDescriptorImageInfo image_info;
	VkWriteDescriptorSet descriptor_write;

	Com_Memset( &sampler_def, 0, sizeof( sampler_def ) );

	sampler_def.address_mode = image->wrapClampMode;

	if ( mipmap ) {
		sampler_def.gl_mag_filter = gl_filter_max;
		sampler_def.gl_min_filter = gl_filter_min;
	} else {
		sampler_def.gl_mag_filter = GL_LINEAR;
		sampler_def.gl_min_filter = GL_LINEAR;
		// no anisotropy without mipmaps
		sampler_def.noAnisotropy = qtrue;
	}

	image_info.sampler = vk_find_sampler( &sampler_def );
	image_info.imageView = image->view;
	image_info.imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;

	descriptor_write.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
	descriptor_write.dstSet = image->descriptor;
	descriptor_write.dstBinding = 0;
	descriptor_write.dstArrayElement = 0;
	descriptor_write.descriptorCount = 1;
	descriptor_write.pNext = NULL;
	descriptor_write.descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
	descriptor_write.pImageInfo = &image_info;
	descriptor_write.pBufferInfo = NULL;
	descriptor_write.pTexelBufferView = NULL;

	qvkUpdateDescriptorSets( vk.device, 1, &descriptor_write, 0, NULL );
}


static void set_shader_stage_desc(VkPipelineShaderStageCreateInfo *desc, VkShaderStageFlagBits stage, VkShaderModule shader_module, const char *entry) {
	desc->sType = VK_STRUCTURE_TYPE_PIPELINE_SHADER_STAGE_CREATE_INFO;
	desc->pNext = NULL;
	desc->flags = 0;
	desc->stage = stage;
	desc->module = shader_module;
	desc->pName = entry;
	desc->pSpecializationInfo = NULL;
}


void vk_create_post_process_pipeline( int program_index, uint32_t width, uint32_t height )
{
	VkPipelineShaderStageCreateInfo shader_stages[2];
	VkPipelineVertexInputStateCreateInfo vertex_input_state;
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state;
	VkPipelineRasterizationStateCreateInfo rasterization_state;
	VkPipelineDepthStencilStateCreateInfo depth_stencil_state;
	VkPipelineViewportStateCreateInfo viewport_state;
	VkPipelineMultisampleStateCreateInfo multisample_state;
	VkPipelineColorBlendStateCreateInfo blend_state;
	VkPipelineColorBlendAttachmentState attachment_blend_state;
	VkGraphicsPipelineCreateInfo create_info;
	VkViewport viewport;
	VkRect2D scissor;
	VkSpecializationMapEntry spec_entries[9];
	VkSpecializationInfo frag_spec_info;
	VkPipeline *pipeline;
	VkShaderModule fsmodule;
	VkRenderPass renderpass;
	VkPipelineLayout layout;
	VkSampleCountFlagBits samples;
	const char *pipeline_name;
	qboolean blend;

	struct FragSpecData {
		float gamma;
		float overbright;
		float greyscale;
		float bloom_threshold;
		float bloom_intensity;
		int dither;
		int depth_r;
		int depth_g;
		int depth_b;
	} frag_spec_data;

	switch ( program_index ) {
		case 1: // bloom extraction
			pipeline = &vk.bloom_extract_pipeline;
			fsmodule = vk.modules.bloom_fs;
			renderpass = vk.render_pass.bloom_extract;
			layout = vk.pipeline_layout_post_process;
			samples = VK_SAMPLE_COUNT_1_BIT;
			pipeline_name = "bloom extraction pipeline";
			blend = qfalse;
			break;
		case 2: // final bloom blend
			pipeline = &vk.bloom_blend_pipeline;
			fsmodule = vk.modules.blend_fs;
			renderpass = vk.render_pass.post_bloom;
			layout = vk.pipeline_layout_blend;
			samples = vkSamples;
			pipeline_name = "bloom blend pipeline";
			blend = qtrue;
			break;
		case 3: // capture buffer extraction
			pipeline = &vk.capture_pipeline;
			fsmodule = vk.modules.gamma_fs;
			renderpass = vk.render_pass.capture;
			layout = vk.pipeline_layout_post_process;
			samples = VK_SAMPLE_COUNT_1_BIT;
			pipeline_name = "capture buffer pipeline";
			blend = qfalse;
			break;
		default: // gamma correction
			pipeline = &vk.gamma_pipeline;
			fsmodule = vk.modules.gamma_fs;
			renderpass = vk.render_pass.gamma;
			layout = vk.pipeline_layout_post_process;
			samples = VK_SAMPLE_COUNT_1_BIT;
			pipeline_name = "gamma-correction pipeline";
			blend = qfalse;
			break;
	}

	if ( *pipeline != VK_NULL_HANDLE ) {
		vk_wait_idle();
		qvkDestroyPipeline( vk.device, *pipeline, NULL );
		*pipeline = VK_NULL_HANDLE;
	}

	vertex_input_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
	vertex_input_state.pNext = NULL;
	vertex_input_state.flags = 0;
	vertex_input_state.vertexBindingDescriptionCount = 0;
	vertex_input_state.pVertexBindingDescriptions = NULL;
	vertex_input_state.vertexAttributeDescriptionCount = 0;
	vertex_input_state.pVertexBindingDescriptions = NULL;

	// shaders
	set_shader_stage_desc( shader_stages+0, VK_SHADER_STAGE_VERTEX_BIT, vk.modules.gamma_vs, "main" );
	set_shader_stage_desc( shader_stages+1, VK_SHADER_STAGE_FRAGMENT_BIT, fsmodule, "main" );

	frag_spec_data.gamma = 1.0 / (r_gamma->value);
	frag_spec_data.overbright = (float)(1 << tr.overbrightBits);
	frag_spec_data.greyscale = r_greyscale->value;
	frag_spec_data.bloom_threshold = r_bloom_threshold->value;
	frag_spec_data.bloom_intensity = r_bloom_intensity->value;
	frag_spec_data.dither = r_dither->integer;

	if ( !vk_surface_format_color_depth( vk.present_format.format, &frag_spec_data.depth_r, &frag_spec_data.depth_g, &frag_spec_data.depth_b ) )
		ri.Printf( PRINT_ALL, "Format %s not recognized, dither to assume 8bpc\n", vk_format_string( vk.base_format.format ) );

	spec_entries[0].constantID = 0;
	spec_entries[0].offset = offsetof( struct FragSpecData, gamma );
	spec_entries[0].size = sizeof( frag_spec_data.gamma );

	spec_entries[1].constantID = 1;
	spec_entries[1].offset = offsetof( struct FragSpecData, overbright );
	spec_entries[1].size = sizeof( frag_spec_data.overbright );

	spec_entries[2].constantID = 2;
	spec_entries[2].offset = offsetof( struct FragSpecData, greyscale );
	spec_entries[2].size = sizeof( frag_spec_data.greyscale );

	spec_entries[3].constantID = 3;
	spec_entries[3].offset = offsetof( struct FragSpecData, bloom_threshold );
	spec_entries[3].size = sizeof( frag_spec_data.bloom_threshold );

	spec_entries[4].constantID = 4;
	spec_entries[4].offset = offsetof( struct FragSpecData, bloom_intensity );
	spec_entries[4].size = sizeof( frag_spec_data.bloom_intensity );

	spec_entries[5].constantID = 5;
	spec_entries[5].offset = offsetof( struct FragSpecData, dither );
	spec_entries[5].size = sizeof( frag_spec_data.dither );

	spec_entries[6].constantID = 6;
	spec_entries[6].offset = offsetof( struct FragSpecData, depth_r );
	spec_entries[6].size = sizeof( frag_spec_data.depth_r );

	spec_entries[7].constantID = 7;
	spec_entries[7].offset = offsetof(struct FragSpecData, depth_g);
	spec_entries[7].size = sizeof(frag_spec_data.depth_g);

	spec_entries[8].constantID = 8;
	spec_entries[8].offset = offsetof(struct FragSpecData, depth_b);
	spec_entries[8].size = sizeof(frag_spec_data.depth_b);

	frag_spec_info.mapEntryCount = 9;
	frag_spec_info.pMapEntries = spec_entries;
	frag_spec_info.dataSize = sizeof( frag_spec_data );
	frag_spec_info.pData = &frag_spec_data;

	shader_stages[1].pSpecializationInfo = &frag_spec_info;

	//
	// Primitive assembly.
	//
	input_assembly_state.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	input_assembly_state.pNext = NULL;
	input_assembly_state.flags = 0;
	input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
	input_assembly_state.primitiveRestartEnable = VK_FALSE;

	//
	// Viewport.
	//
	if ( program_index == 0 ) {
		// gamma correction
		viewport.x = 0.0 + vk.blitX0;
		viewport.y = 0.0 + vk.blitY0;
		viewport.width = gls.windowWidth - vk.blitX0 * 2;
		viewport.height = gls.windowHeight - vk.blitY0 * 2;
	} else {
		// other post-processing
		viewport.x = 0.0;
		viewport.y = 0.0;
		viewport.width = width;
		viewport.height = height;
	}

	viewport.minDepth = 0.0;
	viewport.maxDepth = 1.0;

	scissor.offset.x = viewport.x;
	scissor.offset.y = viewport.y;
	scissor.extent.width = viewport.width;
	scissor.extent.height = viewport.height;

	viewport_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	viewport_state.pNext = NULL;
	viewport_state.flags = 0;
	viewport_state.viewportCount = 1;
	viewport_state.pViewports = &viewport;
	viewport_state.scissorCount = 1;
	viewport_state.pScissors = &scissor;

	//
	// Rasterization.
	//
	rasterization_state.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	rasterization_state.pNext = NULL;
	rasterization_state.flags = 0;
	rasterization_state.depthClampEnable = VK_FALSE;
	rasterization_state.rasterizerDiscardEnable = VK_FALSE;
	rasterization_state.polygonMode = VK_POLYGON_MODE_FILL;
	//rasterization_state.cullMode = VK_CULL_MODE_BACK_BIT; // VK_CULL_MODE_NONE;
	rasterization_state.cullMode = VK_CULL_MODE_NONE;
	rasterization_state.frontFace = VK_FRONT_FACE_CLOCKWISE; // Q3 defaults to clockwise vertex order
	rasterization_state.depthBiasEnable = VK_FALSE;
	rasterization_state.depthBiasConstantFactor = 0.0f;
	rasterization_state.depthBiasClamp = 0.0f;
	rasterization_state.depthBiasSlopeFactor = 0.0f;
	rasterization_state.lineWidth = 1.0f;

	multisample_state.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	multisample_state.pNext = NULL;
	multisample_state.flags = 0;
	multisample_state.rasterizationSamples = samples;
	multisample_state.sampleShadingEnable = VK_FALSE;
	multisample_state.minSampleShading = 1.0f;
	multisample_state.pSampleMask = NULL;
	multisample_state.alphaToCoverageEnable = VK_FALSE;
	multisample_state.alphaToOneEnable = VK_FALSE;

	Com_Memset(&attachment_blend_state, 0, sizeof(attachment_blend_state));
	attachment_blend_state.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;
	if ( blend ) {
		attachment_blend_state.blendEnable = VK_TRUE;
		attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
		attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
	} else {
		attachment_blend_state.blendEnable = VK_FALSE;
	}

	blend_state.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	blend_state.pNext = NULL;
	blend_state.flags = 0;
	blend_state.logicOpEnable = VK_FALSE;
	blend_state.logicOp = VK_LOGIC_OP_COPY;
	blend_state.attachmentCount = 1;
	blend_state.pAttachments = &attachment_blend_state;
	blend_state.blendConstants[0] = 0.0f;
	blend_state.blendConstants[1] = 0.0f;
	blend_state.blendConstants[2] = 0.0f;
	blend_state.blendConstants[3] = 0.0f;

	Com_Memset( &depth_stencil_state, 0, sizeof( depth_stencil_state ) );

	depth_stencil_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
	depth_stencil_state.pNext = NULL;
	depth_stencil_state.flags = 0;
	depth_stencil_state.depthTestEnable = VK_FALSE;
	depth_stencil_state.depthWriteEnable = VK_FALSE;
	depth_stencil_state.depthCompareOp = VK_COMPARE_OP_NEVER;
	depth_stencil_state.depthBoundsTestEnable = VK_FALSE;
	depth_stencil_state.stencilTestEnable = VK_FALSE;
	depth_stencil_state.minDepthBounds = 0.0f;
	depth_stencil_state.maxDepthBounds = 1.0f;

	create_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	create_info.pNext = NULL;
	create_info.flags = 0;
	create_info.stageCount = 2;
	create_info.pStages = shader_stages;
	create_info.pVertexInputState = &vertex_input_state;
	create_info.pInputAssemblyState = &input_assembly_state;
	create_info.pTessellationState = NULL;
	create_info.pViewportState = &viewport_state;
	create_info.pRasterizationState = &rasterization_state;
	create_info.pMultisampleState = &multisample_state;
	create_info.pDepthStencilState = (program_index == 2) ? &depth_stencil_state : NULL;
	create_info.pDepthStencilState = &depth_stencil_state;
	create_info.pColorBlendState = &blend_state;
	create_info.pDynamicState = NULL;
	create_info.layout = layout;
	create_info.renderPass = renderpass;
	create_info.subpass = 0;
	create_info.basePipelineHandle = VK_NULL_HANDLE;
	create_info.basePipelineIndex = -1;

	VK_CHECK( qvkCreateGraphicsPipelines( vk.device, VK_NULL_HANDLE, 1, &create_info, NULL, pipeline ) );

	SET_OBJECT_NAME( *pipeline, pipeline_name, VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_EXT );
}


void vk_create_blur_pipeline( uint32_t index, uint32_t width, uint32_t height, qboolean horizontal_pass )
{
	VkPipelineShaderStageCreateInfo shader_stages[2];
	VkPipelineVertexInputStateCreateInfo vertex_input_state;
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state;
	VkPipelineRasterizationStateCreateInfo rasterization_state;
	VkPipelineViewportStateCreateInfo viewport_state;
	VkPipelineMultisampleStateCreateInfo multisample_state;
	VkPipelineColorBlendStateCreateInfo blend_state;
	VkPipelineColorBlendAttachmentState attachment_blend_state;
	VkGraphicsPipelineCreateInfo create_info;
	VkViewport viewport;
	VkRect2D scissor;
	float frag_spec_data[3]; // x-offset, y-offset, correction
	VkSpecializationMapEntry spec_entries[3];
	VkSpecializationInfo frag_spec_info;
	VkPipeline *pipeline;

	pipeline = &vk.blur_pipeline[ index ];

	if ( *pipeline != VK_NULL_HANDLE ) {
		vk_wait_idle();
		qvkDestroyPipeline( vk.device, *pipeline, NULL );
		*pipeline = VK_NULL_HANDLE;
	}

	vertex_input_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
	vertex_input_state.pNext = NULL;
	vertex_input_state.flags = 0;
	vertex_input_state.vertexBindingDescriptionCount = 0;
	vertex_input_state.pVertexBindingDescriptions = NULL;
	vertex_input_state.vertexAttributeDescriptionCount = 0;
	vertex_input_state.pVertexBindingDescriptions = NULL;

	// shaders
	set_shader_stage_desc( shader_stages+0, VK_SHADER_STAGE_VERTEX_BIT, vk.modules.gamma_vs, "main" );
	set_shader_stage_desc( shader_stages+1, VK_SHADER_STAGE_FRAGMENT_BIT, vk.modules.blur_fs, "main" );

	frag_spec_data[0] = 1.2 / (float) width; // x offset
	frag_spec_data[1] = 1.2 / (float) height; // y offset
	frag_spec_data[2] = 1.0; // intensity?

	if ( horizontal_pass ) {
		frag_spec_data[1] = 0.0;
	} else {
		frag_spec_data[0] = 0.0;
	}

	spec_entries[0].constantID = 0;
	spec_entries[0].offset = 0 * sizeof( float );
	spec_entries[0].size = sizeof( float );

	spec_entries[1].constantID = 1;
	spec_entries[1].offset = 1 * sizeof( float );
	spec_entries[1].size = sizeof( float );

	spec_entries[2].constantID = 2;
	spec_entries[2].offset = 2 * sizeof( float );
	spec_entries[2].size = sizeof( float );

	frag_spec_info.mapEntryCount = 3;
	frag_spec_info.pMapEntries = spec_entries;
	frag_spec_info.dataSize = 3 * sizeof( float );
	frag_spec_info.pData = &frag_spec_data[0];

	shader_stages[1].pSpecializationInfo = &frag_spec_info;

	//
	// Primitive assembly.
	//
	input_assembly_state.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	input_assembly_state.pNext = NULL;
	input_assembly_state.flags = 0;
	input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
	input_assembly_state.primitiveRestartEnable = VK_FALSE;

	//
	// Viewport.
	//
	viewport.x = 0.0;
	viewport.y = 0.0;
	viewport.width = width;
	viewport.height = height;
	viewport.minDepth = 0.0;
	viewport.maxDepth = 1.0;

	scissor.offset.x = viewport.x;
	scissor.offset.y = viewport.y;
	scissor.extent.width = viewport.width;
	scissor.extent.height = viewport.height;

	viewport_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	viewport_state.pNext = NULL;
	viewport_state.flags = 0;
	viewport_state.viewportCount = 1;
	viewport_state.pViewports = &viewport;
	viewport_state.scissorCount = 1;
	viewport_state.pScissors = &scissor;

	//
	// Rasterization.
	//
	rasterization_state.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	rasterization_state.pNext = NULL;
	rasterization_state.flags = 0;
	rasterization_state.depthClampEnable = VK_FALSE;
	rasterization_state.rasterizerDiscardEnable = VK_FALSE;
	rasterization_state.polygonMode = VK_POLYGON_MODE_FILL;
	//rasterization_state.cullMode = VK_CULL_MODE_BACK_BIT; // VK_CULL_MODE_NONE;
	rasterization_state.cullMode = VK_CULL_MODE_NONE;
	rasterization_state.frontFace = VK_FRONT_FACE_CLOCKWISE; // Q3 defaults to clockwise vertex order
	rasterization_state.depthBiasEnable = VK_FALSE;
	rasterization_state.depthBiasConstantFactor = 0.0f;
	rasterization_state.depthBiasClamp = 0.0f;
	rasterization_state.depthBiasSlopeFactor = 0.0f;
	rasterization_state.lineWidth = 1.0f;

	multisample_state.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	multisample_state.pNext = NULL;
	multisample_state.flags = 0;
	multisample_state.rasterizationSamples = VK_SAMPLE_COUNT_1_BIT;
	multisample_state.sampleShadingEnable = VK_FALSE;
	multisample_state.minSampleShading = 1.0f;
	multisample_state.pSampleMask = NULL;
	multisample_state.alphaToCoverageEnable = VK_FALSE;
	multisample_state.alphaToOneEnable = VK_FALSE;

	Com_Memset(&attachment_blend_state, 0, sizeof(attachment_blend_state));
	attachment_blend_state.blendEnable = VK_FALSE;
	attachment_blend_state.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;

	blend_state.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	blend_state.pNext = NULL;
	blend_state.flags = 0;
	blend_state.logicOpEnable = VK_FALSE;
	blend_state.logicOp = VK_LOGIC_OP_COPY;
	blend_state.attachmentCount = 1;
	blend_state.pAttachments = &attachment_blend_state;
	blend_state.blendConstants[0] = 0.0f;
	blend_state.blendConstants[1] = 0.0f;
	blend_state.blendConstants[2] = 0.0f;
	blend_state.blendConstants[3] = 0.0f;

	create_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	create_info.pNext = NULL;
	create_info.flags = 0;
	create_info.stageCount = 2;
	create_info.pStages = shader_stages;
	create_info.pVertexInputState = &vertex_input_state;
	create_info.pInputAssemblyState = &input_assembly_state;
	create_info.pTessellationState = NULL;
	create_info.pViewportState = &viewport_state;
	create_info.pRasterizationState = &rasterization_state;
	create_info.pMultisampleState = &multisample_state;
	create_info.pDepthStencilState = NULL;
	create_info.pColorBlendState = &blend_state;
	create_info.pDynamicState = NULL;
	create_info.layout = vk.pipeline_layout_post_process; // one input attachment
	create_info.renderPass = vk.render_pass.blur[ index ];
	create_info.subpass = 0;
	create_info.basePipelineHandle = VK_NULL_HANDLE;
	create_info.basePipelineIndex = -1;

	VK_CHECK( qvkCreateGraphicsPipelines( vk.device, VK_NULL_HANDLE, 1, &create_info, NULL, pipeline ) );

	SET_OBJECT_NAME( *pipeline, va( "%s blur pipeline %i", horizontal_pass ? "horizontal" : "vertical", index/2 + 1 ), VK_DEBUG_REPORT_OBJECT_TYPE_PIPELINE_EXT );
}


static VkVertexInputBindingDescription bindings[8];
static VkVertexInputAttributeDescription attribs[8];
static uint32_t num_binds;
static uint32_t num_attrs;

static void push_bind( uint32_t binding, uint32_t stride )
{
	bindings[ num_binds ].binding = binding;
	bindings[ num_binds ].stride = stride;
	bindings[ num_binds ].inputRate = VK_VERTEX_INPUT_RATE_VERTEX;
	num_binds++;
}

static void push_attr( uint32_t location, uint32_t binding, VkFormat format )
{
	attribs[ num_attrs ].location = location;
	attribs[ num_attrs ].binding = binding;
	attribs[ num_attrs ].format = format;
	attribs[ num_attrs ].offset = 0;
	num_attrs++;
}


VkPipeline create_pipeline( const Vk_Pipeline_Def *def, renderPass_t renderPassIndex ) {
	VkShaderModule *vs_module = NULL;
	VkShaderModule *fs_module = NULL;
	int32_t vert_spec_data[1]; // clippping
	floatint_t frag_spec_data[9]; // 0:alpha-test-func, 1:alpha-test-value, 2:depth-fragment, 3:alpha-to-coverage, 4:color_mode, 5:abs_light, 6:multitexture mode, 7:discard mode, 8:identity color
	VkSpecializationMapEntry spec_entries[10];
	VkSpecializationInfo vert_spec_info;
	VkSpecializationInfo frag_spec_info;
	VkPipelineVertexInputStateCreateInfo vertex_input_state;
	VkPipelineInputAssemblyStateCreateInfo input_assembly_state;
	VkPipelineRasterizationStateCreateInfo rasterization_state;
	VkPipelineViewportStateCreateInfo viewport_state;
	VkPipelineMultisampleStateCreateInfo multisample_state;
	VkPipelineDepthStencilStateCreateInfo depth_stencil_state;
	VkPipelineColorBlendStateCreateInfo blend_state;
	VkPipelineColorBlendAttachmentState attachment_blend_state;
	VkPipelineDynamicStateCreateInfo dynamic_state;
	VkDynamicState dynamic_state_array[] = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
	VkGraphicsPipelineCreateInfo create_info;
	VkPipeline pipeline;
	VkPipelineShaderStageCreateInfo shader_stages[2];
	VkBool32 alphaToCoverage = VK_FALSE;
	unsigned int atest_bits;
	unsigned int state_bits = def->state_bits;

	switch ( def->shader_type ) {

		case TYPE_SIGNLE_TEXTURE_LIGHTING:
			vs_module = &vk.modules.vert.light[0];
			fs_module = &vk.modules.frag.light[0][0];
			break;

		case TYPE_SIGNLE_TEXTURE_LIGHTING_LINEAR:
			vs_module = &vk.modules.vert.light[0];
			fs_module = &vk.modules.frag.light[1][0];
			break;

		case TYPE_SIGNLE_TEXTURE_DF:
			state_bits |= GLS_DEPTHMASK_TRUE;
			vs_module = &vk.modules.vert.gen[0][0][0][0];
			fs_module = &vk.modules.frag.gen0_df;
			break;

		case TYPE_SIGNLE_TEXTURE_IDENTITY:
			vs_module = &vk.modules.vert.gen0_ident;
			fs_module = &vk.modules.frag.gen0_ident;
			break;

		case TYPE_SIGNLE_TEXTURE:
			vs_module = &vk.modules.vert.gen[0][0][0][0];
			fs_module = &vk.modules.frag.gen[0][0][0];
			break;

		case TYPE_SIGNLE_TEXTURE_ENV:
			vs_module = &vk.modules.vert.gen[0][0][1][0];
			fs_module = &vk.modules.frag.gen[0][0][0];
			break;

		case TYPE_MULTI_TEXTURE_MUL2:
		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD2:
			vs_module = &vk.modules.vert.gen[1][0][0][0];
			fs_module = &vk.modules.frag.gen[1][0][0];
			break;

		case TYPE_MULTI_TEXTURE_MUL2_ENV:
		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY_ENV:
		case TYPE_MULTI_TEXTURE_ADD2_ENV:
			vs_module = &vk.modules.vert.gen[1][0][1][0];
			fs_module = &vk.modules.frag.gen[1][0][0];
			break;

		case TYPE_MULTI_TEXTURE_MUL3:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD3:
			vs_module = &vk.modules.vert.gen[2][0][0][0];
			fs_module = &vk.modules.frag.gen[2][0][0];
			break;

		case TYPE_MULTI_TEXTURE_MUL3_ENV:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY_ENV:
		case TYPE_MULTI_TEXTURE_ADD3_ENV:
			vs_module = &vk.modules.vert.gen[2][0][1][0];
			fs_module = &vk.modules.frag.gen[2][0][0];
			break;

		case TYPE_BLEND2_ADD:
		case TYPE_BLEND2_MUL:
		case TYPE_BLEND2_ALPHA:
		case TYPE_BLEND2_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_MIX_ALPHA:
		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA:
			vs_module = &vk.modules.vert.gen[1][1][0][0];
			fs_module = &vk.modules.frag.gen[1][1][0];
			break;

		case TYPE_BLEND2_ADD_ENV:
		case TYPE_BLEND2_MUL_ENV:
		case TYPE_BLEND2_ALPHA_ENV:
		case TYPE_BLEND2_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND2_MIX_ALPHA_ENV:
		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA_ENV:
			vs_module = &vk.modules.vert.gen[1][1][1][0];
			fs_module = &vk.modules.frag.gen[1][1][0];
			break;

		case TYPE_BLEND3_ADD:
		case TYPE_BLEND3_MUL:
		case TYPE_BLEND3_ALPHA:
		case TYPE_BLEND3_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_MIX_ALPHA:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA:
			vs_module = &vk.modules.vert.gen[2][1][0][0];
			fs_module = &vk.modules.frag.gen[2][1][0];
			break;

		case TYPE_BLEND3_ADD_ENV:
		case TYPE_BLEND3_MUL_ENV:
		case TYPE_BLEND3_ALPHA_ENV:
		case TYPE_BLEND3_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA_ENV:
			vs_module = &vk.modules.vert.gen[2][1][1][0];
			fs_module = &vk.modules.frag.gen[2][1][0];
			break;

		case TYPE_COLOR_WHITE:
		case TYPE_COLOR_GREEN:
		case TYPE_COLOR_RED:
			vs_module = &vk.modules.color_vs;
			fs_module = &vk.modules.color_fs;
			break;

		case TYPE_FOG_ONLY:
			vs_module = &vk.modules.fog_vs;
			fs_module = &vk.modules.fog_fs;
			break;

		case TYPE_DOT:
			vs_module = &vk.modules.dot_vs;
			fs_module = &vk.modules.dot_fs;
			break;

		default:
			ri.Error(ERR_DROP, "create_pipeline: unknown shader type %i\n", def->shader_type);
			return 0;
	}

	if ( def->fog_stage ) {
		switch ( def->shader_type ) {
			case TYPE_FOG_ONLY:
			case TYPE_DOT:
			case TYPE_SIGNLE_TEXTURE_DF:
			case TYPE_SIGNLE_TEXTURE_IDENTITY:
			case TYPE_COLOR_WHITE:
			case TYPE_COLOR_GREEN:
			case TYPE_COLOR_RED:
				break;
			default:
				// switch to fogged modules
				vs_module++;
				fs_module++;
				break;
		}
	}

	set_shader_stage_desc(shader_stages+0, VK_SHADER_STAGE_VERTEX_BIT, *vs_module, "main");
	set_shader_stage_desc(shader_stages+1, VK_SHADER_STAGE_FRAGMENT_BIT, *fs_module, "main");

	Com_Memset( vert_spec_data, 0, sizeof( vert_spec_data ) );
	Com_Memset( frag_spec_data, 0, sizeof( frag_spec_data ) );

	//vert_spec_data[0] = def->clipping_plane ? 1 : 0;

	// fragment shader specialization data
	atest_bits = state_bits & GLS_ATEST_BITS;
	switch ( atest_bits ) {
		case GLS_ATEST_GT_0:
			frag_spec_data[0].i = 1; // not equal
			frag_spec_data[1].f = 0.0f;
			break;
		case GLS_ATEST_LT_80:
			frag_spec_data[0].i = 2; // less than
			frag_spec_data[1].f = 0.5f;
			break;
		case GLS_ATEST_GE_80:
			frag_spec_data[0].i = 3; // greater or equal
			frag_spec_data[1].f = 0.5f;
			break;
		default:
			frag_spec_data[0].i = 0;
			frag_spec_data[1].f = 0.0f;
			break;
	};

	// depth fragment threshold
	frag_spec_data[2].f = 0.85f;

	if ( r_ext_alpha_to_coverage->integer && vkSamples != VK_SAMPLE_COUNT_1_BIT && frag_spec_data[0].i ) {
		frag_spec_data[3].i = 1;
		alphaToCoverage = VK_TRUE;
	}

	// constant color
	switch ( def->shader_type ) {
		default: frag_spec_data[4].i = 0; break;
		case TYPE_COLOR_GREEN: frag_spec_data[4].i = 1; break;
		case TYPE_COLOR_RED:   frag_spec_data[4].i = 2; break;
	}

	// abs lighting
	switch ( def->shader_type ) {
		case TYPE_SIGNLE_TEXTURE_LIGHTING:
		case TYPE_SIGNLE_TEXTURE_LIGHTING_LINEAR:
			frag_spec_data[5].i = def->abs_light ? 1 : 0;
		default:
			break;
	}

	// multutexture mode
	switch ( def->shader_type ) {
		case TYPE_MULTI_TEXTURE_MUL2:
		case TYPE_MULTI_TEXTURE_MUL2_ENV:
		case TYPE_MULTI_TEXTURE_MUL3:
		case TYPE_MULTI_TEXTURE_MUL3_ENV:
		case TYPE_BLEND2_MUL:
		case TYPE_BLEND2_MUL_ENV:
		case TYPE_BLEND3_MUL:
		case TYPE_BLEND3_MUL_ENV:
			frag_spec_data[6].i = 0;
			break;

		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY_ENV:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY_ENV:
			frag_spec_data[6].i = 1;
			break;

		case TYPE_MULTI_TEXTURE_ADD2:
		case TYPE_MULTI_TEXTURE_ADD2_ENV:
		case TYPE_MULTI_TEXTURE_ADD3:
		case TYPE_MULTI_TEXTURE_ADD3_ENV:
		case TYPE_BLEND2_ADD:
		case TYPE_BLEND2_ADD_ENV:
		case TYPE_BLEND3_ADD:
		case TYPE_BLEND3_ADD_ENV:
			frag_spec_data[6].i = 2;
			break;

		case TYPE_BLEND2_ALPHA:
		case TYPE_BLEND2_ALPHA_ENV:
		case TYPE_BLEND3_ALPHA:
		case TYPE_BLEND3_ALPHA_ENV:
			frag_spec_data[6].i = 3;
			break;

		case TYPE_BLEND2_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_ONE_MINUS_ALPHA_ENV:
			frag_spec_data[6].i = 4;
			break;

		case TYPE_BLEND2_MIX_ALPHA:
		case TYPE_BLEND2_MIX_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ALPHA:
		case TYPE_BLEND3_MIX_ALPHA_ENV:
			frag_spec_data[6].i = 5;
			break;

		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA_ENV:
			frag_spec_data[6].i = 6;
			break;

		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA:
		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA_ENV:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA_ENV:
			frag_spec_data[6].i = 7;
			break;

		default:
			break;
	}

	frag_spec_data[8].f = tr.identityLight;

	//
	// vertex module specialization data
	//

	spec_entries[0].constantID = 0; // clip_plane
	spec_entries[0].offset = 0 * sizeof( int32_t );
	spec_entries[0].size = sizeof( int32_t );

	vert_spec_info.mapEntryCount = 1;
	vert_spec_info.pMapEntries = spec_entries + 0;
	vert_spec_info.dataSize = 1 * sizeof( int32_t );
	vert_spec_info.pData = &vert_spec_data[0];
	shader_stages[0].pSpecializationInfo = &vert_spec_info;

	//
	// fragment module specialization data
	//

	spec_entries[1].constantID = 0;  // alpha-test-function
	spec_entries[1].offset = 0 * sizeof( int32_t );
	spec_entries[1].size = sizeof( int32_t );

	spec_entries[2].constantID = 1; // alpha-test-value
	spec_entries[2].offset = 1 * sizeof( int32_t );
	spec_entries[2].size = sizeof( float );

	spec_entries[3].constantID = 2; // depth-fragment
	spec_entries[3].offset = 2 * sizeof( int32_t );
	spec_entries[3].size = sizeof( float );

	spec_entries[4].constantID = 3; // alpha-to-coverage
	spec_entries[4].offset = 3 * sizeof( int32_t );
	spec_entries[4].size = sizeof( int32_t );

	spec_entries[5].constantID = 4; // color_mode
	spec_entries[5].offset = 4 * sizeof( int32_t );
	spec_entries[5].size = sizeof( int32_t );

	spec_entries[6].constantID = 5; // abs_light
	spec_entries[6].offset = 5 * sizeof( int32_t );
	spec_entries[6].size = sizeof( int32_t );

	spec_entries[7].constantID = 6; // multitexture mode
	spec_entries[7].offset = 6 * sizeof( int32_t );
	spec_entries[7].size = sizeof( int32_t );

	spec_entries[8].constantID = 7; // discard mode
	spec_entries[8].offset = 7 * sizeof( int32_t );
	spec_entries[8].size = sizeof( int32_t );

	spec_entries[9].constantID = 8; // identity color
	spec_entries[9].offset = 8 * sizeof( int32_t );
	spec_entries[9].size = sizeof( float );

	frag_spec_info.mapEntryCount = 9;
	frag_spec_info.pMapEntries = spec_entries + 1;
	frag_spec_info.dataSize = sizeof( int32_t ) * 9;
	frag_spec_info.pData = &frag_spec_data[0];
	shader_stages[1].pSpecializationInfo = &frag_spec_info;

	//
	// Vertex input
	//
	num_binds = num_attrs = 0;
	switch ( def->shader_type ) {

		case TYPE_FOG_ONLY:
		case TYPE_DOT:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_COLOR_WHITE:
		case TYPE_COLOR_GREEN:
		case TYPE_COLOR_RED:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_SIGNLE_TEXTURE_IDENTITY:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			break;

		case TYPE_SIGNLE_TEXTURE:
		case TYPE_SIGNLE_TEXTURE_DF:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			break;

		case TYPE_SIGNLE_TEXTURE_ENV:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			//push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 5, sizeof( vec4_t ) );					// normals
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			//push_attr( 2, 2, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 5, 5, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_SIGNLE_TEXTURE_LIGHTING:
		case TYPE_SIGNLE_TEXTURE_LIGHTING_LINEAR:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( vec2_t ) );					// st0 array
			push_bind( 2, sizeof( vec4_t ) );					// normals array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 2, 2, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_MULTI_TEXTURE_MUL2:
		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD2:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			break;

		case TYPE_MULTI_TEXTURE_MUL2_ENV:
		case TYPE_MULTI_TEXTURE_ADD2_IDENTITY_ENV:
		case TYPE_MULTI_TEXTURE_ADD2_ENV:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			//push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 5, sizeof( vec4_t ) );					// normals
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			//push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 5, 5, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_MULTI_TEXTURE_MUL3:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY:
		case TYPE_MULTI_TEXTURE_ADD3:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 4, sizeof( vec2_t ) );					// st2 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 4, 4, VK_FORMAT_R32G32_SFLOAT );
			break;

		case TYPE_MULTI_TEXTURE_MUL3_ENV:
		case TYPE_MULTI_TEXTURE_ADD3_IDENTITY_ENV:
		case TYPE_MULTI_TEXTURE_ADD3_ENV:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color array
			//push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 4, sizeof( vec2_t ) );					// st2 array
			push_bind( 5, sizeof( vec4_t ) );					// normals
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			//push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 4, 4, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 5, 5, VK_FORMAT_R32G32B32A32_SFLOAT );
			break;

		case TYPE_BLEND2_ADD:
		case TYPE_BLEND2_MUL:
		case TYPE_BLEND2_ALPHA:
		case TYPE_BLEND2_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_MIX_ALPHA:
		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color0 array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 6, sizeof( color4ub_t ) );				// color1 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 6, 6, VK_FORMAT_R8G8B8A8_UNORM );
			break;

		case TYPE_BLEND2_ADD_ENV:
		case TYPE_BLEND2_MUL_ENV:
		case TYPE_BLEND2_ALPHA_ENV:
		case TYPE_BLEND2_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND2_MIX_ALPHA_ENV:
		case TYPE_BLEND2_MIX_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND2_DST_COLOR_SRC_ALPHA_ENV:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color0 array
			//push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 5, sizeof( vec4_t ) );					// normals
			push_bind( 6, sizeof( color4ub_t ) );				// color1 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			//push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 5, 5, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 6, 6, VK_FORMAT_R8G8B8A8_UNORM );
			break;

		case TYPE_BLEND3_ADD:
		case TYPE_BLEND3_MUL:
		case TYPE_BLEND3_ALPHA:
		case TYPE_BLEND3_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_MIX_ALPHA:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color0 array
			push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 4, sizeof( vec2_t ) );					// st2 array
			push_bind( 6, sizeof( color4ub_t ) );				// color1 array
			push_bind( 7, sizeof( color4ub_t ) );				// color2 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 4, 4, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 6, 6, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 7, 7, VK_FORMAT_R8G8B8A8_UNORM );
			break;

		case TYPE_BLEND3_ADD_ENV:
		case TYPE_BLEND3_MUL_ENV:
		case TYPE_BLEND3_ALPHA_ENV:
		case TYPE_BLEND3_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ALPHA_ENV:
		case TYPE_BLEND3_MIX_ONE_MINUS_ALPHA_ENV:
		case TYPE_BLEND3_DST_COLOR_SRC_ALPHA_ENV:
			push_bind( 0, sizeof( vec4_t ) );					// xyz array
			push_bind( 1, sizeof( color4ub_t ) );				// color0 array
			//push_bind( 2, sizeof( vec2_t ) );					// st0 array
			push_bind( 3, sizeof( vec2_t ) );					// st1 array
			push_bind( 4, sizeof( vec2_t ) );					// st2 array
			push_bind( 5, sizeof( vec4_t ) );					// normals
			push_bind( 6, sizeof( color4ub_t ) );				// color1 array
			push_bind( 7, sizeof( color4ub_t ) );				// color2 array
			push_attr( 0, 0, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 1, 1, VK_FORMAT_R8G8B8A8_UNORM );
			//push_attr( 2, 2, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 3, 3, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 4, 4, VK_FORMAT_R32G32_SFLOAT );
			push_attr( 5, 5, VK_FORMAT_R32G32B32A32_SFLOAT );
			push_attr( 6, 6, VK_FORMAT_R8G8B8A8_UNORM );
			push_attr( 7, 7, VK_FORMAT_R8G8B8A8_UNORM );
			break;

		default:
			ri.Error( ERR_DROP, "%s: invalid shader type - %i", __func__, def->shader_type );
			break;
	}

	vertex_input_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VERTEX_INPUT_STATE_CREATE_INFO;
	vertex_input_state.pNext = NULL;
	vertex_input_state.flags = 0;
	vertex_input_state.pVertexBindingDescriptions = bindings;
	vertex_input_state.pVertexAttributeDescriptions = attribs;
	vertex_input_state.vertexBindingDescriptionCount = num_binds;
	vertex_input_state.vertexAttributeDescriptionCount = num_attrs;

	//
	// Primitive assembly.
	//
	input_assembly_state.sType = VK_STRUCTURE_TYPE_PIPELINE_INPUT_ASSEMBLY_STATE_CREATE_INFO;
	input_assembly_state.pNext = NULL;
	input_assembly_state.flags = 0;
	input_assembly_state.primitiveRestartEnable = VK_FALSE;

	switch ( def->primitives ) {
		case LINE_LIST: input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_LINE_LIST; break;
		case POINT_LIST: input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_POINT_LIST; break;
		case TRIANGLE_STRIP: input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP; break;
		default: input_assembly_state.topology = VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST; break;
	}

	//
	// Viewport.
	//
	viewport_state.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_STATE_CREATE_INFO;
	viewport_state.pNext = NULL;
	viewport_state.flags = 0;
	viewport_state.viewportCount = 1;
	viewport_state.pViewports = NULL; // dynamic viewport state
	viewport_state.scissorCount = 1;
	viewport_state.pScissors = NULL; // dynamic scissor state

	//
	// Rasterization.
	//
	rasterization_state.sType = VK_STRUCTURE_TYPE_PIPELINE_RASTERIZATION_STATE_CREATE_INFO;
	rasterization_state.pNext = NULL;
	rasterization_state.flags = 0;
	rasterization_state.depthClampEnable = VK_FALSE;
	rasterization_state.rasterizerDiscardEnable = VK_FALSE;
	if ( def->shader_type == TYPE_DOT ) {
		rasterization_state.polygonMode = VK_POLYGON_MODE_POINT;
	} else {
		rasterization_state.polygonMode = (state_bits & GLS_POLYMODE_LINE) ? VK_POLYGON_MODE_LINE : VK_POLYGON_MODE_FILL;
	}

	switch ( def->face_culling ) {
		case CT_TWO_SIDED:
			rasterization_state.cullMode = VK_CULL_MODE_NONE;
			break;
		case CT_FRONT_SIDED:
			rasterization_state.cullMode = (def->mirror ? VK_CULL_MODE_FRONT_BIT : VK_CULL_MODE_BACK_BIT);
			break;
		case CT_BACK_SIDED:
			rasterization_state.cullMode = (def->mirror ? VK_CULL_MODE_BACK_BIT : VK_CULL_MODE_FRONT_BIT);
			break;
		default:
			ri.Error( ERR_DROP, "create_pipeline: invalid face culling mode %i\n", def->face_culling );
			break;
	}

	rasterization_state.frontFace = VK_FRONT_FACE_CLOCKWISE; // Q3 defaults to clockwise vertex order

	 // depth bias state
	if ( def->polygon_offset ) {
		rasterization_state.depthBiasEnable = VK_TRUE;
		rasterization_state.depthBiasClamp = 0.0f;
#ifdef USE_REVERSED_DEPTH
		rasterization_state.depthBiasConstantFactor = -r_offsetUnits->value;
		rasterization_state.depthBiasSlopeFactor = -r_offsetFactor->value;
#else
		rasterization_state.depthBiasConstantFactor = r_offsetUnits->value;
		rasterization_state.depthBiasSlopeFactor = r_offsetFactor->value;
#endif
	} else {
		rasterization_state.depthBiasEnable = VK_FALSE;
		rasterization_state.depthBiasClamp = 0.0f;
		rasterization_state.depthBiasConstantFactor = 0.0f;
		rasterization_state.depthBiasSlopeFactor = 0.0f;
	}

	if ( def->line_width )
		rasterization_state.lineWidth = (float)def->line_width;
	else
		rasterization_state.lineWidth = 1.0f;

	multisample_state.sType = VK_STRUCTURE_TYPE_PIPELINE_MULTISAMPLE_STATE_CREATE_INFO;
	multisample_state.pNext = NULL;
	multisample_state.flags = 0;

	multisample_state.rasterizationSamples = (vk.renderPassIndex == RENDER_PASS_SCREENMAP) ? vk.screenMapSamples : vkSamples;

	multisample_state.sampleShadingEnable = VK_FALSE;
	multisample_state.minSampleShading = 1.0f;
	multisample_state.pSampleMask = NULL;
	multisample_state.alphaToCoverageEnable = alphaToCoverage;
	multisample_state.alphaToOneEnable = VK_FALSE;

	Com_Memset( &depth_stencil_state, 0, sizeof( depth_stencil_state ) );

	depth_stencil_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DEPTH_STENCIL_STATE_CREATE_INFO;
	depth_stencil_state.pNext = NULL;
	depth_stencil_state.flags = 0;
	depth_stencil_state.depthTestEnable = (state_bits & GLS_DEPTHTEST_DISABLE) ? VK_FALSE : VK_TRUE;
	depth_stencil_state.depthWriteEnable = (state_bits & GLS_DEPTHMASK_TRUE) ? VK_TRUE : VK_FALSE;
#ifdef USE_REVERSED_DEPTH
	depth_stencil_state.depthCompareOp = (state_bits & GLS_DEPTHFUNC_EQUAL) ? VK_COMPARE_OP_EQUAL : VK_COMPARE_OP_GREATER_OR_EQUAL;
#else
	depth_stencil_state.depthCompareOp = (state_bits & GLS_DEPTHFUNC_EQUAL) ? VK_COMPARE_OP_EQUAL : VK_COMPARE_OP_LESS_OR_EQUAL;
#endif
	depth_stencil_state.depthBoundsTestEnable = VK_FALSE;
	depth_stencil_state.stencilTestEnable = (def->shadow_phase != SHADOW_DISABLED) ? VK_TRUE : VK_FALSE;

	if (def->shadow_phase == SHADOW_EDGES) {
		depth_stencil_state.front.failOp = VK_STENCIL_OP_KEEP;
		depth_stencil_state.front.passOp = (def->face_culling == CT_FRONT_SIDED) ? VK_STENCIL_OP_INCREMENT_AND_CLAMP : VK_STENCIL_OP_DECREMENT_AND_CLAMP;
		depth_stencil_state.front.depthFailOp = VK_STENCIL_OP_KEEP;
		depth_stencil_state.front.compareOp = VK_COMPARE_OP_ALWAYS;
		depth_stencil_state.front.compareMask = 255;
		depth_stencil_state.front.writeMask = 255;
		depth_stencil_state.front.reference = 0;

		depth_stencil_state.back = depth_stencil_state.front;

	}  else if (def->shadow_phase == SHADOW_FS_QUAD) {
		depth_stencil_state.front.failOp = VK_STENCIL_OP_KEEP;
		depth_stencil_state.front.passOp = VK_STENCIL_OP_KEEP;
		depth_stencil_state.front.depthFailOp = VK_STENCIL_OP_KEEP;
		depth_stencil_state.front.compareOp = VK_COMPARE_OP_NOT_EQUAL;
		depth_stencil_state.front.compareMask = 255;
		depth_stencil_state.front.writeMask = 255;
		depth_stencil_state.front.reference = 0;

		depth_stencil_state.back = depth_stencil_state.front;
	}

	depth_stencil_state.minDepthBounds = 0.0f;
	depth_stencil_state.maxDepthBounds = 1.0f;

	Com_Memset(&attachment_blend_state, 0, sizeof(attachment_blend_state));
	attachment_blend_state.blendEnable = (state_bits & (GLS_SRCBLEND_BITS | GLS_DSTBLEND_BITS)) ? VK_TRUE : VK_FALSE;

	if (def->shadow_phase == SHADOW_EDGES || def->shader_type == TYPE_SIGNLE_TEXTURE_DF)
		attachment_blend_state.colorWriteMask = 0;
	else
		attachment_blend_state.colorWriteMask = VK_COLOR_COMPONENT_R_BIT | VK_COLOR_COMPONENT_G_BIT | VK_COLOR_COMPONENT_B_BIT | VK_COLOR_COMPONENT_A_BIT;

	if (attachment_blend_state.blendEnable) {
		switch (state_bits & GLS_SRCBLEND_BITS) {
			case GLS_SRCBLEND_ZERO:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ZERO;
				break;
			case GLS_SRCBLEND_ONE:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE;
				break;
			case GLS_SRCBLEND_DST_COLOR:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_DST_COLOR;
				break;
			case GLS_SRCBLEND_ONE_MINUS_DST_COLOR:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_DST_COLOR;
				break;
			case GLS_SRCBLEND_SRC_ALPHA:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
				break;
			case GLS_SRCBLEND_ONE_MINUS_SRC_ALPHA:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
				break;
			case GLS_SRCBLEND_DST_ALPHA:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
				break;
			case GLS_SRCBLEND_ONE_MINUS_DST_ALPHA:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_DST_ALPHA;
				break;
			case GLS_SRCBLEND_ALPHA_SATURATE:
				attachment_blend_state.srcColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA_SATURATE;
				break;
			default:
				ri.Error( ERR_DROP, "create_pipeline: invalid src blend state bits\n" );
				break;
		}
		switch (state_bits & GLS_DSTBLEND_BITS) {
			case GLS_DSTBLEND_ZERO:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ZERO;
				break;
			case GLS_DSTBLEND_ONE:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE;
				break;
			case GLS_DSTBLEND_SRC_COLOR:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_SRC_COLOR;
				break;
			case GLS_DSTBLEND_ONE_MINUS_SRC_COLOR:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_COLOR;
				break;
			case GLS_DSTBLEND_SRC_ALPHA:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_SRC_ALPHA;
				break;
			case GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
				break;
			case GLS_DSTBLEND_DST_ALPHA:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_DST_ALPHA;
				break;
			case GLS_DSTBLEND_ONE_MINUS_DST_ALPHA:
				attachment_blend_state.dstColorBlendFactor = VK_BLEND_FACTOR_ONE_MINUS_DST_ALPHA;
				break;
			default:
				ri.Error( ERR_DROP, "create_pipeline: invalid dst blend state bits\n" );
				break;
		}

		attachment_blend_state.srcAlphaBlendFactor = attachment_blend_state.srcColorBlendFactor;
		attachment_blend_state.dstAlphaBlendFactor = attachment_blend_state.dstColorBlendFactor;
		attachment_blend_state.colorBlendOp = VK_BLEND_OP_ADD;
		attachment_blend_state.alphaBlendOp = VK_BLEND_OP_ADD;

		if ( def->allow_discard && vkSamples != VK_SAMPLE_COUNT_1_BIT ) {
			// try to reduce pixel fillrate for transparent surfaces, this yields 1..10% fps increase when multisampling in enabled
			if ( attachment_blend_state.srcColorBlendFactor == VK_BLEND_FACTOR_SRC_ALPHA && attachment_blend_state.dstColorBlendFactor == VK_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA ) {
				frag_spec_data[7].i = 1;
			} else if ( attachment_blend_state.srcColorBlendFactor == VK_BLEND_FACTOR_ONE && attachment_blend_state.dstColorBlendFactor == VK_BLEND_FACTOR_ONE ) {
				frag_spec_data[7].i = 2;
			}
		}
	}

	blend_state.sType = VK_STRUCTURE_TYPE_PIPELINE_COLOR_BLEND_STATE_CREATE_INFO;
	blend_state.pNext = NULL;
	blend_state.flags = 0;
	blend_state.logicOpEnable = VK_FALSE;
	blend_state.logicOp = VK_LOGIC_OP_COPY;
	blend_state.attachmentCount = 1;
	blend_state.pAttachments = &attachment_blend_state;
	blend_state.blendConstants[0] = 0.0f;
	blend_state.blendConstants[1] = 0.0f;
	blend_state.blendConstants[2] = 0.0f;
	blend_state.blendConstants[3] = 0.0f;

	dynamic_state.sType = VK_STRUCTURE_TYPE_PIPELINE_DYNAMIC_STATE_CREATE_INFO;
	dynamic_state.pNext = NULL;
	dynamic_state.flags = 0;
	dynamic_state.dynamicStateCount = ARRAY_LEN( dynamic_state_array );
	dynamic_state.pDynamicStates = dynamic_state_array;

	create_info.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
	create_info.pNext = NULL;
	create_info.flags = 0;
	create_info.stageCount = ARRAY_LEN(shader_stages);
	create_info.pStages = shader_stages;
	create_info.pVertexInputState = &vertex_input_state;
	create_info.pInputAssemblyState = &input_assembly_state;
	create_info.pTessellationState = NULL;
	create_info.pViewportState = &viewport_state;
	create_info.pRasterizationState = &rasterization_state;
	create_info.pMultisampleState = &multisample_state;
	create_info.pDepthStencilState = &depth_stencil_state;
	create_info.pColorBlendState = &blend_state;
	create_info.pDynamicState = &dynamic_state;

	//if ( def->shader_type == TYPE_DOT )
	//	create_info.layout = vk.pipeline_layout_storage;
	//else
		create_info.layout = vk.pipeline_layout;

	if ( renderPassIndex == RENDER_PASS_SCREENMAP )
		create_info.renderPass = vk.render_pass.screenmap;
	else
		create_info.renderPass = vk.render_pass.main;

	create_info.subpass = 0;
	create_info.basePipelineHandle = VK_NULL_HANDLE;
	create_info.basePipelineIndex = -1;

	VK_CHECK( qvkCreateGraphicsPipelines( vk.device, vk.pipelineCache, 1, &create_info, NULL, &pipeline ) );

	vk.pipeline_create_count++;

	return pipeline;
}


uint32_t vk_alloc_pipeline( const Vk_Pipeline_Def *def ) {
	VK_Pipeline_t *pipeline;
	if ( vk.pipelines_count >= MAX_VK_PIPELINES ) {
		ri.Error( ERR_DROP, "alloc_pipeline: MAX_VK_PIPELINES reached" );
		return 0;
	} else {
		int j;
		pipeline = &vk.pipelines[ vk.pipelines_count ];
		pipeline->def = *def;
		for ( j = 0; j < RENDER_PASS_COUNT; j++ ) {
			pipeline->handle[j] = VK_NULL_HANDLE;
		}
		return vk.pipelines_count++;
	}
}


VkPipeline vk_gen_pipeline( uint32_t index ) {
	if ( index < vk.pipelines_count ) {
		VK_Pipeline_t *pipeline = vk.pipelines + index;
		if ( pipeline->handle[ vk.renderPassIndex ] == VK_NULL_HANDLE )
			pipeline->handle[ vk.renderPassIndex ] = create_pipeline( &pipeline->def, vk.renderPassIndex );
		return pipeline->handle[ vk.renderPassIndex ];
	} else {
		return VK_NULL_HANDLE;
	}
}


uint32_t vk_find_pipeline_ext( uint32_t base, const Vk_Pipeline_Def *def, qboolean use ) {
	const Vk_Pipeline_Def *cur_def;
	uint32_t index;

	for ( index = base; index < vk.pipelines_count; index++ ) {
		cur_def = &vk.pipelines[ index ].def;
		if ( memcmp( cur_def, def, sizeof( *def ) ) == 0 ) {
			goto found;
		}
	}

	index = vk_alloc_pipeline( def );
found:

	if ( use )
		vk_gen_pipeline( index );

	return index;
}


void vk_get_pipeline_def( uint32_t pipeline, Vk_Pipeline_Def *def ) {
	if ( pipeline >= vk.pipelines_count ) {
		Com_Memset( def, 0, sizeof( *def ) );
	} else {
		Com_Memcpy( def, &vk.pipelines[ pipeline ].def, sizeof( *def ) );
	}
}


static void get_viewport_rect(VkRect2D *r)
{
	if ( backEnd.projection2D )
	{
		r->offset.x = 0;
		r->offset.y = 0;
		r->extent.width = vk.renderWidth;
		r->extent.height = vk.renderHeight;
	}
	else
	{
		r->offset.x = backEnd.viewParms.viewportX * vk.renderScaleX;
		r->offset.y = vk.renderHeight - (backEnd.viewParms.viewportY + backEnd.viewParms.viewportHeight) * vk.renderScaleY;
		r->extent.width = (float)backEnd.viewParms.viewportWidth * vk.renderScaleX;
		r->extent.height = (float)backEnd.viewParms.viewportHeight * vk.renderScaleY;
	}
}

static void get_viewport(VkViewport *viewport, Vk_Depth_Range depth_range) {
	VkRect2D r;

	get_viewport_rect( &r );

	viewport->x = (float)r.offset.x;
	viewport->y = (float)r.offset.y;
	viewport->width = (float)r.extent.width;
	viewport->height = (float)r.extent.height;

	switch ( depth_range ) {
		default:
#ifdef USE_REVERSED_DEPTH
		//case DEPTH_RANGE_NORMAL:
			viewport->minDepth = 0.0f;
			viewport->maxDepth = 1.0f;
			break;
		case DEPTH_RANGE_ZERO:
			viewport->minDepth = 1.0f;
			viewport->maxDepth = 1.0f;
			break;
		case DEPTH_RANGE_ONE:
			viewport->minDepth = 0.0f;
			viewport->maxDepth = 0.0f;
			break;
		case DEPTH_RANGE_WEAPON:
			viewport->minDepth = 0.6f;
			viewport->maxDepth = 1.0f;
			break;
#else
		//case DEPTH_RANGE_NORMAL:
			viewport->minDepth = 0.0f;
			viewport->maxDepth = 1.0f;
			break;
		case DEPTH_RANGE_ZERO:
			viewport->minDepth = 0.0f;
			viewport->maxDepth = 0.0f;
			break;
		case DEPTH_RANGE_ONE:
			viewport->minDepth = 1.0f;
			viewport->maxDepth = 1.0f;
			break;
		case DEPTH_RANGE_WEAPON:
			viewport->minDepth = 0.0f;
			viewport->maxDepth = 0.3f;
			break;
#endif
	}
}

static void get_scissor_rect(VkRect2D *r) {

	if ( backEnd.viewParms.portalView != PV_NONE )
	{
		r->offset.x = backEnd.viewParms.scissorX;
		r->offset.y = glConfig.vidHeight - backEnd.viewParms.scissorY - backEnd.viewParms.scissorHeight;
		r->extent.width = backEnd.viewParms.scissorWidth;
		r->extent.height = backEnd.viewParms.scissorHeight;
	}
	else
	{
		get_viewport_rect(r);

		if (r->offset.x < 0)
			r->offset.x = 0;
		if (r->offset.y < 0)
			r->offset.y = 0;

		if (r->offset.x + r->extent.width > glConfig.vidWidth)
			r->extent.width = glConfig.vidWidth - r->offset.x;
		if (r->offset.y + r->extent.height > glConfig.vidHeight)
			r->extent.height = glConfig.vidHeight - r->offset.y;
	}
}


static void get_mvp_transform( float *mvp )
{
	if ( backEnd.projection2D )
	{
		float mvp0 = 2.0f / glConfig.vidWidth;
		float mvp5 = 2.0f / glConfig.vidHeight;

		mvp[0]  =  mvp0; mvp[1]  =  0.0f; mvp[2]  = 0.0f; mvp[3]  = 0.0f;
		mvp[4]  =  0.0f; mvp[5]  =  mvp5; mvp[6]  = 0.0f; mvp[7]  = 0.0f;
#ifdef USE_REVERSED_DEPTH
		mvp[8]  =  0.0f; mvp[9]  =  0.0f; mvp[10] = 0.0f; mvp[11] = 0.0f;
		mvp[12] = -1.0f; mvp[13] = -1.0f; mvp[14] = 1.0f; mvp[15] = 1.0f;
#else
		mvp[8]  =  0.0f; mvp[9]  =  0.0f; mvp[10] = 1.0f; mvp[11] = 0.0f;
		mvp[12] = -1.0f; mvp[13] = -1.0f; mvp[14] = 0.0f; mvp[15] = 1.0f;
#endif
	}
	else
	{
		const float *p = backEnd.viewParms.projectionMatrix;
		float proj[16];
		Com_Memcpy( proj, p, 64 );

		// update q3's proj matrix (opengl) to vulkan conventions: z - [0, 1] instead of [-1, 1] and invert y direction
		proj[5] = -p[5];
		//proj[10] = ( p[10] - 1.0f ) / 2.0f;
		//proj[14] = p[14] / 2.0f;
		myGlMultMatrix( vk_world.modelview_transform, proj, mvp );
	}
}


void vk_clear_color( const vec4_t color ) {

	VkClearAttachment attachment;
	VkClearRect clear_rect[2];
	uint32_t rect_count;

	if ( !vk.active )
		return;

	attachment.colorAttachment = 0;
	attachment.clearValue.color.float32[0] = color[0];
	attachment.clearValue.color.float32[1] = color[1];
	attachment.clearValue.color.float32[2] = color[2];
	attachment.clearValue.color.float32[3] = color[3];
	attachment.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;

	get_scissor_rect( &clear_rect[0].rect );
	clear_rect[0].baseArrayLayer = 0;
	clear_rect[0].layerCount = 1;
	rect_count = 1;

#ifdef _DEBUG
	// Split viewport rectangle into two non-overlapping rectangles.
	// It's a HACK to prevent Vulkan validation layer's performance warning:
	//		"vkCmdClearAttachments() issued on command buffer object XXX prior to any Draw Cmds.
	//		 It is recommended you use RenderPass LOAD_OP_CLEAR on Attachments prior to any Draw."
	//
	// NOTE: we don't use LOAD_OP_CLEAR for color attachment when we begin renderpass
	// since at that point we don't know whether we need collor buffer clear (usually we don't).
	{
		uint32_t h = clear_rect[0].rect.extent.height / 2;
		clear_rect[0].rect.extent.height = h;
		clear_rect[1] = clear_rect[0];
		clear_rect[1].rect.offset.y = h;
		rect_count = 2;
	}
#endif

	qvkCmdClearAttachments( vk.cmd->command_buffer, 1, &attachment, rect_count, clear_rect );
}


void vk_clear_depth( qboolean clear_stencil ) {

	VkClearAttachment attachment;
	VkClearRect clear_rect[1];

	if ( !vk.active )
		return;

	if ( vk_world.dirty_depth_attachment == 0 )
		return;

	attachment.colorAttachment = 0;
#ifdef USE_REVERSED_DEPTH
	attachment.clearValue.depthStencil.depth = 0.0f;
#else
	attachment.clearValue.depthStencil.depth = 1.0f;
#endif
	attachment.clearValue.depthStencil.stencil = 0;
	if ( clear_stencil && r_stencilbits->integer ) {
		attachment.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT | VK_IMAGE_ASPECT_STENCIL_BIT;
	} else {
		attachment.aspectMask = VK_IMAGE_ASPECT_DEPTH_BIT;
	}

	get_scissor_rect( &clear_rect[0].rect );
	clear_rect[0].baseArrayLayer = 0;
	clear_rect[0].layerCount = 1;

	qvkCmdClearAttachments( vk.cmd->command_buffer, 1, &attachment, 1, clear_rect );
}


void vk_update_mvp( const float *m ) {
	float push_constants[16]; // mvp transform

	//
	// Specify push constants.
	//
	if ( m )
		Com_Memcpy( push_constants, m, sizeof( push_constants ) );
	else
		get_mvp_transform( push_constants );

	qvkCmdPushConstants( vk.cmd->command_buffer, vk.pipeline_layout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof( push_constants ), push_constants );

	vk.stats.push_size += sizeof( push_constants );
}


static VkBuffer shade_bufs[8];
static int bind_base;
static int bind_count;

static void vk_bind_index_attr( int index )
{
	if ( bind_base == -1 ) {
		bind_base = index;
		bind_count = 1;
	} else {
		bind_count = index - bind_base + 1;
	}
}


static void vk_bind_attr( int index, unsigned int item_size, const void *src ) {
	const uint32_t offset = PAD( vk.cmd->vertex_buffer_offset, 32 );
	const uint32_t size = tess.numVertexes * item_size;

	if ( offset + size > vk.geometry_buffer_size ) {
		// schedule geometry buffer resize
		vk.geometry_buffer_size_new = log2pad( offset + size, 1 );
	} else {
		vk.cmd->buf_offset[ index ] = offset;
		Com_Memcpy( vk.cmd->vertex_buffer_ptr + offset, src, size );
		vk.cmd->vertex_buffer_offset = (VkDeviceSize)offset + size;
	}

	vk_bind_index_attr( index );
}


uint32_t vk_tess_index( uint32_t numIndexes, const void *src ) {
	const uint32_t offset = vk.cmd->vertex_buffer_offset;
	const uint32_t size = numIndexes * sizeof( tess.indexes[0] );

	if ( offset + size > vk.geometry_buffer_size ) {
		// schedule geometry buffer resize
		vk.geometry_buffer_size_new = log2pad( offset + size, 1 );
		return ~0U;
	} else {
		Com_Memcpy( vk.cmd->vertex_buffer_ptr + offset, src, size );
		vk.cmd->vertex_buffer_offset = (VkDeviceSize)offset + size;
		return offset;
	}
}


void vk_bind_index_buffer( VkBuffer buffer, uint32_t offset )
{
	if ( vk.cmd->curr_index_buffer != buffer || vk.cmd->curr_index_offset != offset )
		qvkCmdBindIndexBuffer( vk.cmd->command_buffer, buffer, offset, VK_INDEX_TYPE_UINT32 );

	vk.cmd->curr_index_buffer = buffer;
	vk.cmd->curr_index_offset = offset;
}


void vk_bind_index( void )
{
#ifdef USE_VBO
	if ( tess.vboIndex ) {
		vk.cmd->num_indexes = 0;
		//qvkCmdBindIndexBuffer( vk.cmd->command_buffer, vk.vbo.index_buffer, tess.shader->iboOffset, VK_INDEX_TYPE_UINT32 );
		return;
	}
#endif

	vk_bind_index_ext( tess.numIndexes, tess.indexes );
}


void vk_bind_index_ext( const int numIndexes, const uint32_t *indexes )
{
	uint32_t offset	= vk_tess_index( numIndexes, indexes );
	if ( offset != ~0U ) {
		vk_bind_index_buffer( vk.cmd->vertex_buffer, offset );
		vk.cmd->num_indexes = numIndexes;
	} else {
		// overflowed
		vk.cmd->num_indexes = 0;
	}
}


void vk_bind_geometry( uint32_t flags )
{
	//unsigned int size;
	bind_base = -1;
	bind_count = 0;

	if ( ( flags & ( TESS_XYZ | TESS_RGBA0 | TESS_ST0 | TESS_ST1 | TESS_ST2 | TESS_NNN | TESS_RGBA1 | TESS_RGBA2 ) ) == 0 )
		return;

#ifdef USE_VBO
	if ( tess.vboIndex ) {

		shade_bufs[0] = shade_bufs[1] = shade_bufs[2] = shade_bufs[3] = shade_bufs[4] = shade_bufs[5] = shade_bufs[6] = shade_bufs[7] = vk.vbo.vertex_buffer;

		if ( flags & TESS_XYZ ) {  // 0
			vk.cmd->vbo_offset[0] = tess.shader->vboOffset + 0;
			vk_bind_index_attr( 0 );
		}

		if ( flags & TESS_RGBA0 ) { // 1
			vk.cmd->vbo_offset[1] = tess.shader->stages[ tess.vboStage ]->rgb_offset[0];
			vk_bind_index_attr( 1 );
		}

		if ( flags & TESS_ST0 ) {  // 2
			vk.cmd->vbo_offset[2] = tess.shader->stages[ tess.vboStage ]->tex_offset[0];
			vk_bind_index_attr( 2 );
		}

		if ( flags & TESS_ST1 ) {  // 3
			vk.cmd->vbo_offset[3] = tess.shader->stages[ tess.vboStage ]->tex_offset[1];
			vk_bind_index_attr( 3 );
		}

		if ( flags & TESS_ST2 ) {  // 4
			vk.cmd->vbo_offset[4] = tess.shader->stages[ tess.vboStage ]->tex_offset[2];
			vk_bind_index_attr( 4 );
		}

		if ( flags & TESS_NNN ) { // 5
			vk.cmd->vbo_offset[5] = tess.shader->normalOffset;
			vk_bind_index_attr( 5 );
		}

		if ( flags & TESS_RGBA1 ) { // 6
			vk.cmd->vbo_offset[6] = tess.shader->stages[ tess.vboStage ]->rgb_offset[1];
			vk_bind_index_attr( 6 );
		}

		if ( flags & TESS_RGBA2 ) { // 7
			vk.cmd->vbo_offset[7] = tess.shader->stages[ tess.vboStage ]->rgb_offset[2];
			vk_bind_index_attr( 7 );
		}

		qvkCmdBindVertexBuffers( vk.cmd->command_buffer, bind_base, bind_count, shade_bufs, vk.cmd->vbo_offset + bind_base );

	} else
#endif // USE_VBO
	{
		shade_bufs[0] = shade_bufs[1] = shade_bufs[2] = shade_bufs[3] = shade_bufs[4] = shade_bufs[5] = shade_bufs[6] = shade_bufs[7] = vk.cmd->vertex_buffer;

		if ( flags & TESS_XYZ ) {
			vk_bind_attr(0, sizeof(tess.xyz[0]), &tess.xyz[0]);
		}

		if ( flags & TESS_RGBA0 ) {
			vk_bind_attr(1, sizeof( color4ub_t ), tess.svars.colors[0][0].rgba);
		}

		if ( flags & TESS_ST0 ) {
			vk_bind_attr(2, sizeof( vec2_t ), tess.svars.texcoordPtr[0]);
		}

		if ( flags & TESS_ST1 ) {
			vk_bind_attr(3, sizeof( vec2_t ), tess.svars.texcoordPtr[1]);
		}

		if ( flags & TESS_ST2 ) {
			vk_bind_attr(4, sizeof( vec2_t ), tess.svars.texcoordPtr[2]);
		}

		if ( flags & TESS_NNN ) {
			vk_bind_attr(5, sizeof(tess.normal[0]), tess.normal);
		}

		if ( flags & TESS_RGBA1 ) {
			vk_bind_attr(6, sizeof( color4ub_t ), tess.svars.colors[1][0].rgba);
		}

		if ( flags & TESS_RGBA2 ) {
			vk_bind_attr(7, sizeof( color4ub_t ), tess.svars.colors[2][0].rgba);
		}

		qvkCmdBindVertexBuffers( vk.cmd->command_buffer, bind_base, bind_count, shade_bufs, vk.cmd->buf_offset + bind_base );
	}
}


void vk_bind_lighting( int stage, int bundle )
{
	bind_base = -1;
	bind_count = 0;

#ifdef USE_VBO
	if ( tess.vboIndex ) {

		shade_bufs[0] = shade_bufs[1] = shade_bufs[2] = vk.vbo.vertex_buffer;

		vk.cmd->vbo_offset[0] = tess.shader->vboOffset + 0;
		vk.cmd->vbo_offset[1] = tess.shader->stages[ stage ]->tex_offset[ bundle ];
		vk.cmd->vbo_offset[2] = tess.shader->normalOffset;

		qvkCmdBindVertexBuffers( vk.cmd->command_buffer, 0, 3, shade_bufs, vk.cmd->vbo_offset + 0 );

	}
	else
#endif // USE_VBO
	{
		shade_bufs[0] = shade_bufs[1] = shade_bufs[2] = vk.cmd->vertex_buffer;

		vk_bind_attr( 0, sizeof( tess.xyz[0] ), &tess.xyz[0] );
		vk_bind_attr( 1, sizeof( vec2_t ), tess.svars.texcoordPtr[ bundle ] );
		vk_bind_attr( 2, sizeof( tess.normal[0] ), tess.normal );

		qvkCmdBindVertexBuffers( vk.cmd->command_buffer, bind_base, bind_count, shade_bufs, vk.cmd->buf_offset + bind_base );
	}
}


void vk_reset_descriptor( int index )
{
	vk.cmd->descriptor_set.current[ index ] = VK_NULL_HANDLE;
}


void vk_update_descriptor( int index, VkDescriptorSet descriptor )
{
	if ( vk.cmd->descriptor_set.current[ index ] != descriptor ) {
		vk.cmd->descriptor_set.start = ( index < vk.cmd->descriptor_set.start ) ? index : vk.cmd->descriptor_set.start;
		vk.cmd->descriptor_set.end = ( index > vk.cmd->descriptor_set.end ) ? index : vk.cmd->descriptor_set.end;
	}
	vk.cmd->descriptor_set.current[ index ] = descriptor;
}


void vk_update_descriptor_offset( int index, uint32_t offset )
{
	vk.cmd->descriptor_set.offset[ index ] = offset;
}


void vk_bind_descriptor_sets( void )
{
	uint32_t offsets[2], offset_count;
	uint32_t start, end, count;

	start = vk.cmd->descriptor_set.start;
	if ( start == ~0U )
		return;

	end = vk.cmd->descriptor_set.end;

	offset_count = 0;
	if ( start <= 1 ) { // uniform offset or storage offset
		offsets[ offset_count++ ] = vk.cmd->descriptor_set.offset[ start ];
	}

	count = end - start + 1;

	qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout, start, count, vk.cmd->descriptor_set.current + start, offset_count, offsets );

	vk.cmd->descriptor_set.end = 0;
	vk.cmd->descriptor_set.start = ~0U;
}


void vk_bind_pipeline( uint32_t pipeline ) {
	VkPipeline vkpipe;

	vkpipe = vk_gen_pipeline( pipeline );

	if ( vkpipe != vk.cmd->last_pipeline ) {
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vkpipe );
		vk.cmd->last_pipeline = vkpipe;
	}

	vk_world.dirty_depth_attachment |= ( vk.pipelines[ pipeline ].def.state_bits & GLS_DEPTHMASK_TRUE );
}


void vk_draw_geometry( Vk_Depth_Range depth_range, qboolean indexed ) {
	VkRect2D scissor_rect;
	VkViewport viewport;

	if ( vk.geometry_buffer_size_new ) {
		// geometry buffer overflow happened this frame
		return;
	}

	vk_bind_descriptor_sets();

	// configure pipeline's dynamic state
	if ( vk.cmd->depth_range != depth_range ) {
		vk.cmd->depth_range = depth_range;

		get_scissor_rect( &scissor_rect );

		if ( memcmp( &vk.cmd->scissor_rect, &scissor_rect, sizeof( scissor_rect ) ) != 0 ) {
			qvkCmdSetScissor( vk.cmd->command_buffer, 0, 1, &scissor_rect );
			vk.cmd->scissor_rect = scissor_rect;
		}

		get_viewport( &viewport, depth_range );
		qvkCmdSetViewport( vk.cmd->command_buffer, 0, 1, &viewport );
	}

	// issue draw call(s)
#ifdef USE_VBO
	if ( tess.vboIndex )
		VBO_RenderIBOItems();
	else
#endif
	if ( indexed ) {
		qvkCmdDrawIndexed( vk.cmd->command_buffer, vk.cmd->num_indexes, 1, 0, 0, 0 );
	} else {
		qvkCmdDraw( vk.cmd->command_buffer, tess.numVertexes, 1, 0, 0 );
	}
}


static void vk_begin_render_pass( VkRenderPass renderPass, VkFramebuffer frameBuffer, qboolean clearValues, uint32_t width, uint32_t height )
{
	VkRenderPassBeginInfo render_pass_begin_info;
	VkClearValue clear_values[3];

	// Begin render pass.

	render_pass_begin_info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
	render_pass_begin_info.pNext = NULL;
	render_pass_begin_info.renderPass = renderPass;
	render_pass_begin_info.framebuffer = frameBuffer;
	render_pass_begin_info.renderArea.offset.x = 0;
	render_pass_begin_info.renderArea.offset.y = 0;
	render_pass_begin_info.renderArea.extent.width = width;
	render_pass_begin_info.renderArea.extent.height = height;

	if ( clearValues ) {
		/// attachments layout:
		// [0] - resolve/color/presentation
		// [1] - depth/stencil
		// [2] - multisampled color, optional
		Com_Memset( clear_values, 0, sizeof( clear_values ) );
#ifndef USE_REVERSED_DEPTH
		clear_values[1].depthStencil.depth = 1.0;
#endif
		render_pass_begin_info.clearValueCount = vk.msaaActive ? 3 : 2;
		render_pass_begin_info.pClearValues = clear_values;

		vk_world.dirty_depth_attachment = 0;
	} else {
		render_pass_begin_info.clearValueCount = 0;
		render_pass_begin_info.pClearValues = NULL;
	}

	qvkCmdBeginRenderPass( vk.cmd->command_buffer, &render_pass_begin_info, VK_SUBPASS_CONTENTS_INLINE );
}


void vk_begin_main_render_pass( void )
{
	VkFramebuffer frameBuffer = vk.framebuffers.main[ vk.swapchain_image_index ];

	vk.renderPassIndex = RENDER_PASS_MAIN;

	vk.renderWidth = glConfig.vidWidth;
	vk.renderHeight = glConfig.vidHeight;

	//vk.renderScaleX = (float)vk.renderWidth / (float)glConfig.vidWidth;
	//vk.renderScaleY = (float)vk.renderHeight / (float)glConfig.vidHeight;
	vk.renderScaleX = vk.renderScaleY = 1.0f;

	vk_begin_render_pass( vk.render_pass.main, frameBuffer, qtrue, vk.renderWidth, vk.renderHeight );
}


void vk_begin_post_bloom_render_pass( void )
{
	VkFramebuffer frameBuffer = vk.framebuffers.main[ vk.swapchain_image_index ];

	vk.renderPassIndex = RENDER_PASS_POST_BLOOM;

	vk.renderWidth = glConfig.vidWidth;
	vk.renderHeight = glConfig.vidHeight;

	//vk.renderScaleX = (float)vk.renderWidth / (float)glConfig.vidWidth;
	//vk.renderScaleY = (float)vk.renderHeight / (float)glConfig.vidHeight;
	vk.renderScaleX = vk.renderScaleY = 1.0f;

	vk_begin_render_pass( vk.render_pass.post_bloom, frameBuffer, qfalse, vk.renderWidth, vk.renderHeight );
}


void vk_begin_bloom_extract_render_pass( void )
{
	VkFramebuffer frameBuffer = vk.framebuffers.bloom_extract;

	//vk.renderPassIndex = RENDER_PASS_BLOOM_EXTRACT; // doesn't matter, we will use dedicated pipelines

	vk.renderWidth = gls.captureWidth;
	vk.renderHeight = gls.captureHeight;

	//vk.renderScaleX = (float)vk.renderWidth / (float)glConfig.vidWidth;
	//vk.renderScaleY = (float)vk.renderHeight / (float)glConfig.vidHeight;
	vk.renderScaleX = vk.renderScaleY = 1.0f;

	vk_begin_render_pass( vk.render_pass.bloom_extract, frameBuffer, qfalse, vk.renderWidth, vk.renderHeight );
}


void vk_begin_blur_render_pass( uint32_t index )
{
	VkFramebuffer frameBuffer = vk.framebuffers.blur[ index ];

	//vk.renderPassIndex = RENDER_PASS_BLOOM_EXTRACT; // doesn't matter, we will use dedicated pipelines

	vk.renderWidth = gls.captureWidth / ( 2 << ( index / 2 ) );
	vk.renderHeight = gls.captureHeight / ( 2 << ( index / 2 ) );

	//vk.renderScaleX = (float)vk.renderWidth / (float)glConfig.vidWidth;
	//vk.renderScaleY = (float)vk.renderHeight / (float)glConfig.vidHeight;
	vk.renderScaleX = vk.renderScaleY = 1.0f;

	vk_begin_render_pass( vk.render_pass.blur[ index ], frameBuffer, qfalse, vk.renderWidth, vk.renderHeight );
}


void vk_begin_screenmap_render_pass( void )
{
	VkFramebuffer frameBuffer = vk.framebuffers.screenmap;

	record_image_layout_transition( vk.cmd->command_buffer, vk.screenMap.color_image, VK_IMAGE_ASPECT_COLOR_BIT,
		0, VK_IMAGE_LAYOUT_UNDEFINED, VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT, VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL );

	vk.renderPassIndex = RENDER_PASS_SCREENMAP;

	vk.renderWidth = vk.screenMapWidth;
	vk.renderHeight = vk.screenMapHeight;

	vk.renderScaleX = (float)vk.renderWidth / (float)glConfig.vidWidth;
	vk.renderScaleY = (float)vk.renderHeight / (float)glConfig.vidHeight;

	vk_begin_render_pass( vk.render_pass.screenmap, frameBuffer, qtrue, vk.renderWidth, vk.renderHeight );
}


void vk_end_render_pass( void )
{
	qvkCmdEndRenderPass( vk.cmd->command_buffer );

//	vk.renderPassIndex = RENDER_PASS_MAIN;
}


static qboolean vk_find_screenmap_drawsurfs( void )
{
	const void *curCmd = &backEndData->commands.cmds;
	const drawBufferCommand_t *db_cmd;
	const drawSurfsCommand_t *ds_cmd;

	for ( ;; ) {
		curCmd = PADP( curCmd, sizeof(void *) );
		switch ( *(const int *)curCmd ) {
			case RC_DRAW_BUFFER:
				db_cmd = (const drawBufferCommand_t *)curCmd;
				curCmd = (const void *)(db_cmd + 1);
				break;
			case RC_DRAW_SURFS:
				ds_cmd = (const drawSurfsCommand_t *)curCmd;
				return ds_cmd->refdef.needScreenMap;
			default:
				return qfalse;
		}
	}
}


#ifndef UINT64_MAX
#define UINT64_MAX 0xFFFFFFFFFFFFFFFFULL
#endif

void vk_begin_frame( void )
{
	VkCommandBufferBeginInfo begin_info;
	//VkFramebuffer frameBuffer;
	VkResult res;

	if ( vk.frame_count++ ) // might happen during stereo rendering
		return;

	if ( vk.cmd->waitForFence ) {

		vk.cmd = &vk.tess[ vk.cmd_index++ ];
		vk.cmd_index %= NUM_COMMAND_BUFFERS;

		if ( !ri.CL_IsMinimized() ) {
			res = qvkAcquireNextImageKHR( vk.device, vk.swapchain, 5 * 1000000000LLU, vk.cmd->image_acquired, VK_NULL_HANDLE, &vk.swapchain_image_index );
			// when running via RDP: "Application has already acquired the maximum number of images (0x2)"
			// probably caused by "device lost" errors
			if ( res < 0 ) {
				if ( res == VK_ERROR_OUT_OF_DATE_KHR ) {
					// swapchain re-creation needed
					vk_restart_swapchain( __func__ );
				} else {
					ri.Error( ERR_FATAL, "vkAcquireNextImageKHR returned %s", vk_result_string( res ) );
				}
			}
		} else {
			vk.swapchain_image_index++;
			vk.swapchain_image_index %= vk.swapchain_image_count;
		}

		//vk.cmd = &vk.tess[ vk.cmd_index++ ];
		//vk.cmd_index %= NUM_COMMAND_BUFFERS;

		vk.cmd->waitForFence = qfalse;
		VK_CHECK( qvkWaitForFences( vk.device, 1, &vk.cmd->rendering_finished_fence, VK_FALSE, 1e10 ) );
	} else {
		// current command buffer has been reset due to geometry buffer overflow/update
		// so we will reuse it with current swapchain image as well
	}

	VK_CHECK( qvkResetFences( vk.device, 1, &vk.cmd->rendering_finished_fence ) );

	begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
	begin_info.pNext = NULL;
	begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
	begin_info.pInheritanceInfo = NULL;

	VK_CHECK( qvkBeginCommandBuffer( vk.cmd->command_buffer, &begin_info ) );

	// Ensure visibility of geometry buffers writes.
	//record_buffer_memory_barrier( vk.cmd->command_buffer, vk.cmd->vertex_buffer, vk.cmd->vertex_buffer_offset, VK_PIPELINE_STAGE_HOST_BIT, VK_PIPELINE_STAGE_VERTEX_INPUT_BIT, VK_ACCESS_HOST_WRITE_BIT, VK_ACCESS_VERTEX_ATTRIBUTE_READ_BIT );

#if 1
	// add explicit layout transition dependency
	if ( vk.fboActive ) {
		record_image_layout_transition( vk.cmd->command_buffer,
			vk.color_image, VK_IMAGE_ASPECT_COLOR_BIT,
			VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT, VK_IMAGE_LAYOUT_UNDEFINED,
			VK_ACCESS_SHADER_READ_BIT, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL );

	} else {
		record_image_layout_transition( vk.cmd->command_buffer,
			vk.swapchain_images[ vk.swapchain_image_index ], VK_IMAGE_ASPECT_COLOR_BIT,
			VK_ACCESS_COLOR_ATTACHMENT_READ_BIT | VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT, VK_IMAGE_LAYOUT_UNDEFINED,
			VK_ACCESS_MEMORY_READ_BIT, VK_IMAGE_LAYOUT_PRESENT_SRC_KHR );
	}
#endif

	if ( vk.cmd->vertex_buffer_offset > vk.stats.vertex_buffer_max ) {
		vk.stats.vertex_buffer_max = vk.cmd->vertex_buffer_offset;
	}

	if ( vk.stats.push_size > vk.stats.push_size_max ) {
		vk.stats.push_size_max = vk.stats.push_size;
	}

	vk.cmd->last_pipeline = VK_NULL_HANDLE;

	backEnd.screenMapDone = qfalse;

	if ( vk_find_screenmap_drawsurfs() ) {
		vk_begin_screenmap_render_pass();
	} else {
		vk_begin_main_render_pass();
	}

	// dynamic vertex buffer layout
	vk.cmd->uniform_read_offset = 0;
	vk.cmd->vertex_buffer_offset = 0;
	Com_Memset( vk.cmd->buf_offset, 0, sizeof( vk.cmd->buf_offset ) );
	Com_Memset( vk.cmd->vbo_offset, 0, sizeof( vk.cmd->vbo_offset ) );
	vk.cmd->curr_index_buffer = VK_NULL_HANDLE;
	vk.cmd->curr_index_offset = 0;

	Com_Memset( &vk.cmd->descriptor_set, 0, sizeof( vk.cmd->descriptor_set ) );
	vk.cmd->descriptor_set.start = ~0U;
	//vk.cmd->descriptor_set.end = 0;

	Com_Memset( &vk.cmd->scissor_rect, 0, sizeof( vk.cmd->scissor_rect ) );

	vk_update_descriptor( 2, tr.whiteImage->descriptor );
	vk_update_descriptor( 3, tr.whiteImage->descriptor );
	if ( vk.maxBoundDescriptorSets >= 6 ) {
		vk_update_descriptor( 4, tr.whiteImage->descriptor );
	}

	// other stats
	vk.stats.push_size = 0;
}


static void vk_resize_geometry_buffer( void )
{
	int i;

	vk_end_render_pass();

	VK_CHECK( qvkEndCommandBuffer( vk.cmd->command_buffer ) );

	qvkResetCommandBuffer( vk.cmd->command_buffer, 0 );

	vk_wait_idle();

	vk_release_geometry_buffers();

	vk_create_geometry_buffers( vk.geometry_buffer_size_new );
	vk.geometry_buffer_size_new = 0;

	for ( i = 0; i < NUM_COMMAND_BUFFERS; i++ )
		vk_update_uniform_descriptor( vk.tess[ i ].uniform_descriptor, vk.tess[ i ].vertex_buffer );

	ri.Printf( PRINT_DEVELOPER, "...geometry buffer resized to %iK\n", (int)( vk.geometry_buffer_size / 1024 ) );
}


void vk_end_frame( void )
{
	VkPipelineStageFlags wait_dst_stage_mask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
	VkPresentInfoKHR present_info;
	VkSubmitInfo submit_info;
	VkResult res;

	if ( vk.frame_count == 0 )
		return;

	vk.frame_count = 0;

	if ( vk.geometry_buffer_size_new )
	{
		vk_resize_geometry_buffer();
		return;
	}

	if ( vk.fboActive )
	{
		vk.cmd->last_pipeline = VK_NULL_HANDLE; // do not restore clobbered descriptors in vk_bloom()

		if ( r_bloom->integer )
		{
			vk_bloom();
		}

		if ( backEnd.screenshotMask && vk.capture.image )
		{
			vk_end_render_pass();

			// render to capture FBO
			vk_begin_render_pass( vk.render_pass.capture, vk.framebuffers.capture, qfalse, gls.captureWidth, gls.captureHeight );
			qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.capture_pipeline );
			qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.color_descriptor, 0, NULL );

			qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		}

		if ( !ri.CL_IsMinimized() )
		{
			vk_end_render_pass();

			vk.renderWidth = gls.windowWidth;
			vk.renderHeight = gls.windowHeight;

			vk.renderScaleX = 1.0;
			vk.renderScaleY = 1.0;

			vk_begin_render_pass( vk.render_pass.gamma, vk.framebuffers.gamma[ vk.swapchain_image_index ], qfalse, vk.renderWidth, vk.renderHeight );
			qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.gamma_pipeline );
			qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.color_descriptor, 0, NULL );

			qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		}
	}

	vk_end_render_pass();

	VK_CHECK( qvkEndCommandBuffer( vk.cmd->command_buffer ) );

	submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
	submit_info.pNext = NULL;
	submit_info.commandBufferCount = 1;
	submit_info.pCommandBuffers = &vk.cmd->command_buffer;
	if ( !ri.CL_IsMinimized() ) {
		submit_info.waitSemaphoreCount = 1;
		submit_info.pWaitSemaphores = &vk.cmd->image_acquired;
		submit_info.pWaitDstStageMask = &wait_dst_stage_mask;
		submit_info.signalSemaphoreCount = 1;
		submit_info.pSignalSemaphores = &vk.cmd->rendering_finished;
	} else {
		submit_info.waitSemaphoreCount = 0;
		submit_info.pWaitSemaphores = NULL;
		submit_info.pWaitDstStageMask = NULL;
		submit_info.signalSemaphoreCount = 0;
		submit_info.pSignalSemaphores = NULL;
	}

	VK_CHECK( qvkQueueSubmit( vk.queue, 1, &submit_info, vk.cmd->rendering_finished_fence ) );
	vk.cmd->waitForFence = qtrue;

	// presentation may take undefined time to complete, we can't measure it in a reliable way
	backEnd.pc.msec = ri.Milliseconds() - backEnd.pc.msec;

	if ( ri.CL_IsMinimized() )
		return;

	present_info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
	present_info.pNext = NULL;
	present_info.waitSemaphoreCount = 1;
	present_info.pWaitSemaphores = &vk.cmd->rendering_finished;
	present_info.swapchainCount = 1;
	present_info.pSwapchains = &vk.swapchain;
	present_info.pImageIndices = &vk.swapchain_image_index;
	present_info.pResults = NULL;

	res = qvkQueuePresentKHR( vk.queue, &present_info );
	if ( res < 0 ) {
		if ( res == VK_ERROR_DEVICE_LOST ) {
			 // we can ignore that
			ri.Printf( PRINT_DEVELOPER, "vkQueuePresentKHR: device lost\n" );
		} else if ( res == VK_ERROR_OUT_OF_DATE_KHR ) {
			// swapchain re-creation needed
			vk_restart_swapchain( __func__ );
		} else {
			// or we don't
			ri.Error( ERR_FATAL, "vkQueuePresentKHR returned %s", vk_result_string( res ) );
		}
	}
}


static qboolean is_bgr( VkFormat format ) {
	switch ( format ) {
		case VK_FORMAT_B8G8R8A8_UNORM:
		case VK_FORMAT_B8G8R8A8_SNORM:
		case VK_FORMAT_B8G8R8A8_UINT:
		case VK_FORMAT_B8G8R8A8_SINT:
		case VK_FORMAT_B8G8R8A8_SRGB:
		case VK_FORMAT_B4G4R4A4_UNORM_PACK16:
			return qtrue;
		default:
			return qfalse;
	}
}


void vk_read_pixels( byte *buffer, uint32_t width, uint32_t height )
{
	VkCommandBuffer command_buffer;
	VkDeviceMemory memory;
	VkMemoryRequirements memory_requirements;
	VkMemoryPropertyFlags memory_reqs;
	VkMemoryPropertyFlags memory_flags;
	VkMemoryAllocateInfo alloc_info;
	VkImageSubresource subresource;
	VkSubresourceLayout layout;
	VkImageCreateInfo desc;
	VkImage srcImage;
	VkImageLayout srcImageLayout;
	VkAccessFlagBits srcImageAccess;
	VkImage dstImage;
	byte *buffer_ptr;
	byte *data;
	uint32_t pixel_width;
	uint32_t i, n;
	qboolean invalidate_ptr;

	VK_CHECK( qvkWaitForFences( vk.device, 1, &vk.cmd->rendering_finished_fence, VK_FALSE, 1e12 ) );

	if ( vk.fboActive ) {
		srcImageAccess = VK_ACCESS_SHADER_READ_BIT;
		if ( vk.capture.image ) {
			// dedicated capture buffer
			srcImageLayout = VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL;
			srcImage = vk.capture.image;
		} else {
			srcImageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
			srcImage = vk.color_image;
		}
	} else {
		srcImageAccess = VK_ACCESS_MEMORY_READ_BIT;
		srcImageLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
		srcImage = vk.swapchain_images[ vk.swapchain_image_index ];
	}

	Com_Memset( &desc, 0, sizeof( desc ) );

	// Create image in host visible memory to serve as a destination for framebuffer pixels.
	desc.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
	desc.pNext = NULL;
	desc.flags = 0;
	desc.imageType = VK_IMAGE_TYPE_2D;
	desc.format = vk.capture_format;
	desc.extent.width = width;
	desc.extent.height = height;
	desc.extent.depth = 1;
	desc.mipLevels = 1;
	desc.arrayLayers = 1;
	desc.samples = VK_SAMPLE_COUNT_1_BIT;
	desc.tiling = VK_IMAGE_TILING_LINEAR;
	desc.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT;
	desc.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
	desc.queueFamilyIndexCount = 0;
	desc.pQueueFamilyIndices = NULL;
	desc.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;

	VK_CHECK( qvkCreateImage( vk.device, &desc, NULL, &dstImage ) );

	qvkGetImageMemoryRequirements( vk.device, dstImage, &memory_requirements );

	alloc_info.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
	alloc_info.pNext = NULL;
	alloc_info.allocationSize = memory_requirements.size;

	// host_cached bit is desirable for fast reads
	memory_reqs = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT | VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
	alloc_info.memoryTypeIndex = find_memory_type2( memory_requirements.memoryTypeBits, memory_reqs, &memory_flags );
	if ( alloc_info.memoryTypeIndex == ~0 ) {
		// try less explicit flags, without host_coherent
		memory_reqs = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_CACHED_BIT;
		alloc_info.memoryTypeIndex = find_memory_type2( memory_requirements.memoryTypeBits, memory_reqs, &memory_flags );
		if ( alloc_info.memoryTypeIndex == ~0U ) {
			// slowest case
			memory_reqs = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
			alloc_info.memoryTypeIndex = find_memory_type2( memory_requirements.memoryTypeBits, memory_reqs, &memory_flags );
			if ( alloc_info.memoryTypeIndex == ~0U ) {
				ri.Error( ERR_FATAL, "%s(): failed to find matching memory type for image capture", __func__ );
			}
		}
	}

	if ( memory_flags & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT ) {
		invalidate_ptr = qfalse;
	} else {
		 // according to specification - must be performed if host_coherent is not set
		invalidate_ptr = qtrue;
	}

	VK_CHECK(qvkAllocateMemory(vk.device, &alloc_info, NULL, &memory));
	VK_CHECK(qvkBindImageMemory(vk.device, dstImage, memory, 0));

	command_buffer = begin_command_buffer();

	if ( srcImageLayout != VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL ) {
		record_image_layout_transition( command_buffer, srcImage,
			VK_IMAGE_ASPECT_COLOR_BIT,
			srcImageAccess, srcImageLayout,
			VK_ACCESS_TRANSFER_READ_BIT, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL );
	}

	record_image_layout_transition( command_buffer, dstImage,
		VK_IMAGE_ASPECT_COLOR_BIT,
		0, VK_IMAGE_LAYOUT_UNDEFINED,
		VK_ACCESS_TRANSFER_WRITE_BIT, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL );

	// end_command_buffer( command_buffer );

	// command_buffer = begin_command_buffer();

	if ( vk.blitEnabled ) {
		VkImageBlit region;

		region.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		region.srcSubresource.mipLevel = 0;
		region.srcSubresource.baseArrayLayer = 0;
		region.srcSubresource.layerCount = 1;
		region.srcOffsets[0].x = 0;
		region.srcOffsets[0].y = 0;
		region.srcOffsets[0].z = 0;
		region.srcOffsets[1].x = width;
		region.srcOffsets[1].y = height;
		region.srcOffsets[1].z = 1;
		region.dstSubresource = region.srcSubresource;
		region.dstOffsets[0] = region.srcOffsets[0];
		region.dstOffsets[1] = region.srcOffsets[1];

		qvkCmdBlitImage( command_buffer, srcImage, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, dstImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region, VK_FILTER_NEAREST );

	} else {
		VkImageCopy region;

		region.srcSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
		region.srcSubresource.mipLevel = 0;
		region.srcSubresource.baseArrayLayer = 0;
		region.srcSubresource.layerCount = 1;
		region.srcOffset.x = 0;
		region.srcOffset.y = 0;
		region.srcOffset.z = 0;
		region.dstSubresource = region.srcSubresource;
		region.dstOffset = region.srcOffset;
		region.extent.width = width;
		region.extent.height = height;
		region.extent.depth = 1;

		qvkCmdCopyImage( command_buffer, srcImage, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, dstImage, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &region );
	}

	end_command_buffer( command_buffer );

	// Copy data from destination image to memory buffer.
	subresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
	subresource.mipLevel = 0;
	subresource.arrayLayer = 0;

	qvkGetImageSubresourceLayout( vk.device, dstImage, &subresource, &layout );

	VK_CHECK( qvkMapMemory( vk.device, memory, 0, VK_WHOLE_SIZE, 0, (void**)&data ) );

	if ( invalidate_ptr )
	{
		VkMappedMemoryRange range;
		range.sType = VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE;
		range.pNext = NULL;
		range.memory = memory;
		range.size = VK_WHOLE_SIZE;
		range.offset = 0;
		qvkInvalidateMappedMemoryRanges( vk.device, 1, &range );
	}

	data += layout.offset;

	switch ( vk.capture_format ) {
		case VK_FORMAT_B4G4R4A4_UNORM_PACK16: pixel_width = 2; break;
		case VK_FORMAT_R16G16B16A16_UNORM: pixel_width = 8; break;
		default: pixel_width = 4; break;
	}

	buffer_ptr = buffer + width * (height - 1) * 3;
	for ( i = 0; i < height; i++ ) {
		switch ( pixel_width ) {
			case 2: {
				uint16_t *src = (uint16_t*)data;
				for ( n = 0; n < width; n++ ) {
					buffer_ptr[n*3+0] = ((src[n]>>12)&0xF)<<4;
					buffer_ptr[n*3+1] = ((src[n]>>8)&0xF)<<4;
					buffer_ptr[n*3+2] = ((src[n]>>4)&0xF)<<4;
				}
			} break;

			case 4: {
				for ( n = 0; n < width; n++ ) {
					Com_Memcpy( &buffer_ptr[n*3], &data[n*4], 3 );
					//buffer_ptr[n*3+0] = data[n*4+0];
					//buffer_ptr[n*3+1] = data[n*4+1];
					//buffer_ptr[n*3+2] = data[n*4+2];
				}
			} break;

			case 8: {
				const uint16_t *src = (uint16_t*)data;
				for ( n = 0; n < width; n++ ) {
					buffer_ptr[n*3+0] = src[n*4+0]>>8;
					buffer_ptr[n*3+1] = src[n*4+1]>>8;
					buffer_ptr[n*3+2] = src[n*4+2]>>8;
				}
			} break;
		}
		buffer_ptr -= width * 3;
		data += layout.rowPitch;
	}

	if ( is_bgr( vk.capture_format ) ) {
		buffer_ptr = buffer;
		for ( i = 0; i < width * height; i++ ) {
			byte tmp = buffer_ptr[0];
			buffer_ptr[0] = buffer_ptr[2];
			buffer_ptr[2] = tmp;
			buffer_ptr += 3;
		}
	}

	qvkDestroyImage( vk.device, dstImage, NULL );
	qvkFreeMemory( vk.device, memory, NULL );

	// restore previous layout
	if ( srcImage == vk.color_image ) {
		command_buffer = begin_command_buffer();

		record_image_layout_transition( command_buffer, srcImage,
			VK_IMAGE_ASPECT_COLOR_BIT,
			VK_ACCESS_TRANSFER_READ_BIT, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL,
			srcImageAccess, srcImageLayout );

		end_command_buffer( command_buffer );
	}
}


qboolean vk_bloom( void )
{
	uint32_t i;

	if ( vk.renderPassIndex == RENDER_PASS_SCREENMAP )
	{
		return qfalse;
	}

	if ( backEnd.doneBloom || !backEnd.doneSurfaces || !vk.fboActive )
	{
		return qfalse;
	}

	vk_end_render_pass(); // end main

	// bloom extraction
	vk_begin_bloom_extract_render_pass();
	qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.bloom_extract_pipeline );
	qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.color_descriptor, 0, NULL );
	qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
	vk_end_render_pass();

	for ( i = 0; i < VK_NUM_BLOOM_PASSES*2; i+=2 ) {
		// horizontal blur
		vk_begin_blur_render_pass( i+0 );
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.blur_pipeline[i+0] );
		qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.bloom_image_descriptor[i+0], 0, NULL );
		qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		vk_end_render_pass();

		// vectical blur
		vk_begin_blur_render_pass( i+1 );
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.blur_pipeline[i+1] );
		qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.bloom_image_descriptor[i+1], 0, NULL );
		qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		vk_end_render_pass();
#if 0
		// horizontal blur
		vk_begin_blur_render_pass( i+0 );
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.blur_pipeline[i+0] );
		qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.bloom_image_descriptor[i+2], 0, NULL );
		qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		vk_end_render_pass();

		// vectical blur
		vk_begin_blur_render_pass( i+1 );
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.blur_pipeline[i+1] );
		qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_post_process, 0, 1, &vk.bloom_image_descriptor[i+1], 0, NULL );
		qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
		vk_end_render_pass();
#endif
	}

	vk_begin_post_bloom_render_pass(); // begin post-bloom
	{
		VkDescriptorSet dset[VK_NUM_BLOOM_PASSES];

		for ( i = 0; i < VK_NUM_BLOOM_PASSES; i++ )
		{
			dset[i] = vk.bloom_image_descriptor[(i+1)*2];
		}

		// blend downscaled buffers to main fbo
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.bloom_blend_pipeline );
		qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout_blend, 0, ARRAY_LEN(dset), dset, 0, NULL );
		qvkCmdDraw( vk.cmd->command_buffer, 4, 1, 0, 0 );
	}

	// invalidate pipeline state cache
	//vk.cmd->last_pipeline = VK_NULL_HANDLE;

	if ( vk.cmd->last_pipeline != VK_NULL_HANDLE )
	{
		// restore last pipeline
		qvkCmdBindPipeline( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.cmd->last_pipeline );

		vk_update_mvp( NULL );

		// force depth range and viewport/scissor updates
		vk.cmd->depth_range = DEPTH_RANGE_COUNT;

		// restore clobbered descriptor sets
		for ( i = 0; i < VK_NUM_BLOOM_PASSES; i++ ) {
			if ( vk.cmd->descriptor_set.current[i] != VK_NULL_HANDLE ) {
				if ( i == 0 || i == 1 )
					qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout, i, 1, &vk.cmd->descriptor_set.current[i], 1, &vk.cmd->descriptor_set.offset[i] );
				else
					qvkCmdBindDescriptorSets( vk.cmd->command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, vk.pipeline_layout, i, 1, &vk.cmd->descriptor_set.current[i], 0, NULL );
			}
		}
	}

	backEnd.doneBloom = qtrue;

	return qtrue;
}

#define FORMAT_DEPTH(format, r_bits, g_bits, b_bits) case(VK_FORMAT_##format): *r = r_bits; *b = b_bits; *g = g_bits; return qtrue;
qboolean vk_surface_format_color_depth(VkFormat format, int* r, int* g, int* b) {
	switch (format) {
		// Common formats from https://vulkan.gpuinfo.org/listsurfaceformats.php
		FORMAT_DEPTH(B8G8R8A8_UNORM, 255, 255, 255)
		FORMAT_DEPTH(B8G8R8A8_SRGB, 255, 255, 255)
		FORMAT_DEPTH(A2B10G10R10_UNORM_PACK32, 1023, 1023, 1023)
		FORMAT_DEPTH(R8G8B8A8_UNORM, 255, 255, 255)
		FORMAT_DEPTH(R8G8B8A8_SRGB, 255, 255, 255)
		FORMAT_DEPTH(A2R10G10B10_UNORM_PACK32, 1023, 1023, 1023)
		FORMAT_DEPTH(R5G6B5_UNORM_PACK16, 31, 63, 31)
		FORMAT_DEPTH(R8G8B8A8_SNORM, 255, 255, 255)
		FORMAT_DEPTH(A8B8G8R8_UNORM_PACK32, 255, 255, 255)
		FORMAT_DEPTH(A8B8G8R8_SNORM_PACK32, 255, 255, 255)
		FORMAT_DEPTH(A8B8G8R8_SRGB_PACK32, 255, 255, 255)
		FORMAT_DEPTH(R16G16B16A16_UNORM, 65535, 65535, 65535)
		FORMAT_DEPTH(R16G16B16A16_SNORM, 65535, 65535, 65535)
		FORMAT_DEPTH(B5G6R5_UNORM_PACK16, 31, 63, 31)
		FORMAT_DEPTH(B8G8R8A8_SNORM, 255, 255, 255)
		FORMAT_DEPTH(R4G4B4A4_UNORM_PACK16, 15, 15, 15)
		FORMAT_DEPTH(B4G4R4A4_UNORM_PACK16, 15, 15, 15)
		FORMAT_DEPTH(A1R5G5B5_UNORM_PACK16, 31, 31, 31)
		FORMAT_DEPTH(R5G5B5A1_UNORM_PACK16, 31, 31, 31)
		FORMAT_DEPTH(B5G5R5A1_UNORM_PACK16, 31, 31, 31)
	default:
		*r = 255; *g = 255; *b = 255; return qfalse;
	}
}
