Cppcheck report - Godot - branch: master, commit: 216b3302f318c32a5dcf250293d90e47e712e8e9 (2024-12-22): drivers/vulkan/rendering_device_driver_vulkan.h

/**************************************************************************/
/*  rendering_device_driver_vulkan.h                                      */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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/* Permission is hereby granted, free of charge, to any person obtaining  */
/* a copy of this software and associated documentation files (the        */
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/* The above copyright notice and this permission notice shall be         */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
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/**************************************************************************/

#ifndef RENDERING_DEVICE_DRIVER_VULKAN_H
#define RENDERING_DEVICE_DRIVER_VULKAN_H

#include "core/templates/hash_map.h"
#include "core/templates/paged_allocator.h"
#include "drivers/vulkan/rendering_context_driver_vulkan.h"
#include "servers/rendering/rendering_device_driver.h"

#ifdef DEBUG_ENABLED
#ifndef _MSC_VER
#define _DEBUG
#endif
#endif
#include "thirdparty/vulkan/vk_mem_alloc.h"

#include "drivers/vulkan/godot_vulkan.h"

// Design principles:
// - Vulkan structs are zero-initialized and fields not requiring a non-zero value are omitted (except in cases where expresivity reasons apply).
class RenderingDeviceDriverVulkan : public RenderingDeviceDriver {
	/*****************/
	/**** GENERIC ****/
	/*****************/

	struct CommandQueue;
	struct SwapChain;

	struct Queue {
		VkQueue queue = VK_NULL_HANDLE;
		uint32_t virtual_count = 0;
		BinaryMutex submit_mutex;
	};

	struct SubgroupCapabilities {
		uint32_t size = 0;
		uint32_t min_size = 0;
		uint32_t max_size = 0;
		VkShaderStageFlags supported_stages = 0;
		VkSubgroupFeatureFlags supported_operations = 0;
		VkBool32 quad_operations_in_all_stages = false;
		bool size_control_is_supported = false;

		uint32_t supported_stages_flags_rd() const;
		String supported_stages_desc() const;
		uint32_t supported_operations_flags_rd() const;
		String supported_operations_desc() const;
	};

	struct VRSCapabilities {
		bool pipeline_vrs_supported = false; // We can specify our fragment rate on a pipeline level.
		bool primitive_vrs_supported = false; // We can specify our fragment rate on each drawcall.
		bool attachment_vrs_supported = false; // We can provide a density map attachment on our framebuffer.

		Size2i min_texel_size;
		Size2i max_texel_size;
		Size2i max_fragment_size;

		Size2i texel_size; // The texel size we'll use
	};

	struct ShaderCapabilities {
		bool shader_float16_is_supported = false;
		bool shader_int8_is_supported = false;
	};

	struct StorageBufferCapabilities {
		bool storage_buffer_16_bit_access_is_supported = false;
		bool uniform_and_storage_buffer_16_bit_access_is_supported = false;
		bool storage_push_constant_16_is_supported = false;
		bool storage_input_output_16 = false;
	};

	struct DeviceFunctions {
		PFN_vkCreateSwapchainKHR CreateSwapchainKHR = nullptr;
		PFN_vkDestroySwapchainKHR DestroySwapchainKHR = nullptr;
		PFN_vkGetSwapchainImagesKHR GetSwapchainImagesKHR = nullptr;
		PFN_vkAcquireNextImageKHR AcquireNextImageKHR = nullptr;
		PFN_vkQueuePresentKHR QueuePresentKHR = nullptr;
		PFN_vkCreateRenderPass2KHR CreateRenderPass2KHR = nullptr;

		// Debug marker extensions.
		PFN_vkCmdDebugMarkerBeginEXT CmdDebugMarkerBeginEXT = nullptr;
		PFN_vkCmdDebugMarkerEndEXT CmdDebugMarkerEndEXT = nullptr;
		PFN_vkCmdDebugMarkerInsertEXT CmdDebugMarkerInsertEXT = nullptr;
		PFN_vkDebugMarkerSetObjectNameEXT DebugMarkerSetObjectNameEXT = nullptr;

		// Debug device fault.
		PFN_vkGetDeviceFaultInfoEXT GetDeviceFaultInfoEXT = nullptr;
	};
	// Debug marker extensions.
	VkDebugReportObjectTypeEXT _convert_to_debug_report_objectType(VkObjectType p_object_type);

	VkDevice vk_device = VK_NULL_HANDLE;
	RenderingContextDriverVulkan *context_driver = nullptr;
	RenderingContextDriver::Device context_device = {};
	uint32_t frame_count = 1;
	VkPhysicalDevice physical_device = VK_NULL_HANDLE;
	VkPhysicalDeviceProperties physical_device_properties = {};
	VkPhysicalDeviceFeatures physical_device_features = {};
	VkPhysicalDeviceFeatures requested_device_features = {};
	HashMap<CharString, bool> requested_device_extensions;
	HashSet<CharString> enabled_device_extension_names;
	TightLocalVector<TightLocalVector<Queue>> queue_families;
	TightLocalVector<VkQueueFamilyProperties> queue_family_properties;
	RDD::Capabilities device_capabilities;
	SubgroupCapabilities subgroup_capabilities;
	MultiviewCapabilities multiview_capabilities;
	VRSCapabilities vrs_capabilities;
	ShaderCapabilities shader_capabilities;
	StorageBufferCapabilities storage_buffer_capabilities;
	bool pipeline_cache_control_support = false;
	bool device_fault_support = false;
#if defined(VK_TRACK_DEVICE_MEMORY)
	bool device_memory_report_support = false;
#endif
#if defined(SWAPPY_FRAME_PACING_ENABLED)
	// Swappy frame pacer for Android.
	bool swappy_frame_pacer_enable = false;
	uint8_t swappy_mode = 2; // See default value for display/window/frame_pacing/android/swappy_mode.
#endif
	DeviceFunctions device_functions;

	void _register_requested_device_extension(const CharString &p_extension_name, bool p_required);
	Error _initialize_device_extensions();
	Error _check_device_features();
	Error _check_device_capabilities();
	Error _add_queue_create_info(LocalVector<VkDeviceQueueCreateInfo> &r_queue_create_info);
	Error _initialize_device(const LocalVector<VkDeviceQueueCreateInfo> &p_queue_create_info);
	Error _initialize_allocator();
	Error _initialize_pipeline_cache();
	VkResult _create_render_pass(VkDevice p_device, const VkRenderPassCreateInfo2 *p_create_info, const VkAllocationCallbacks *p_allocator, VkRenderPass *p_render_pass);
	bool _release_image_semaphore(CommandQueue *p_command_queue, uint32_t p_semaphore_index, bool p_release_on_swap_chain);
	bool _recreate_image_semaphore(CommandQueue *p_command_queue, uint32_t p_semaphore_index, bool p_release_on_swap_chain);
	void _set_object_name(VkObjectType p_object_type, uint64_t p_object_handle, String p_object_name);

public:
	Error initialize(uint32_t p_device_index, uint32_t p_frame_count) override final;

private:
	/****************/
	/**** MEMORY ****/
	/****************/

	VmaAllocator allocator = nullptr;
	HashMap<uint32_t, VmaPool> small_allocs_pools;

	VmaPool _find_or_create_small_allocs_pool(uint32_t p_mem_type_index);

private:
#if defined(DEBUG_ENABLED) || defined(DEV_ENABLED)
	// It's a circular buffer.
	BufferID breadcrumb_buffer;
	uint32_t breadcrumb_offset = 0u;
	uint32_t breadcrumb_id = 0u;
#endif

public:
	/*****************/
	/**** BUFFERS ****/
	/*****************/
	struct BufferInfo {
		VkBuffer vk_buffer = VK_NULL_HANDLE;
		struct {
			VmaAllocation handle = nullptr;
			uint64_t size = UINT64_MAX;
		} allocation;
		uint64_t size = 0;
		VkBufferView vk_view = VK_NULL_HANDLE; // For texel buffers.
	};

	virtual BufferID buffer_create(uint64_t p_size, BitField<BufferUsageBits> p_usage, MemoryAllocationType p_allocation_type) override final;
	virtual bool buffer_set_texel_format(BufferID p_buffer, DataFormat p_format) override final;
	virtual void buffer_free(BufferID p_buffer) override final;
	virtual uint64_t buffer_get_allocation_size(BufferID p_buffer) override final;
	virtual uint8_t *buffer_map(BufferID p_buffer) override final;
	virtual void buffer_unmap(BufferID p_buffer) override final;

	/*****************/
	/**** TEXTURE ****/
	/*****************/

	struct TextureInfo {
		VkImage vk_image = VK_NULL_HANDLE;
		VkImageView vk_view = VK_NULL_HANDLE;
		DataFormat rd_format = DATA_FORMAT_MAX;
		VkImageCreateInfo vk_create_info = {};
		VkImageViewCreateInfo vk_view_create_info = {};
		struct {
			VmaAllocation handle = nullptr;
			VmaAllocationInfo info = {};
		} allocation; // All 0/null if just a view.
#ifdef DEBUG_ENABLED
		bool created_from_extension = false;
		bool transient = false;
#endif
	};

	VkSampleCountFlagBits _ensure_supported_sample_count(TextureSamples p_requested_sample_count);

public:
	virtual TextureID texture_create(const TextureFormat &p_format, const TextureView &p_view) override final;
	virtual TextureID texture_create_from_extension(uint64_t p_native_texture, TextureType p_type, DataFormat p_format, uint32_t p_array_layers, bool p_depth_stencil) override final;
	virtual TextureID texture_create_shared(TextureID p_original_texture, const TextureView &p_view) override final;
	virtual TextureID texture_create_shared_from_slice(TextureID p_original_texture, const TextureView &p_view, TextureSliceType p_slice_type, uint32_t p_layer, uint32_t p_layers, uint32_t p_mipmap, uint32_t p_mipmaps) override final;
	virtual void texture_free(TextureID p_texture) override final;
	virtual uint64_t texture_get_allocation_size(TextureID p_texture) override final;
	virtual void texture_get_copyable_layout(TextureID p_texture, const TextureSubresource &p_subresource, TextureCopyableLayout *r_layout) override final;
	virtual uint8_t *texture_map(TextureID p_texture, const TextureSubresource &p_subresource) override final;
	virtual void texture_unmap(TextureID p_texture) override final;
	virtual BitField<TextureUsageBits> texture_get_usages_supported_by_format(DataFormat p_format, bool p_cpu_readable) override final;
	virtual bool texture_can_make_shared_with_format(TextureID p_texture, DataFormat p_format, bool &r_raw_reinterpretation) override final;

	/*****************/
	/**** SAMPLER ****/
	/*****************/
public:
	virtual SamplerID sampler_create(const SamplerState &p_state) final override;
	virtual void sampler_free(SamplerID p_sampler) final override;
	virtual bool sampler_is_format_supported_for_filter(DataFormat p_format, SamplerFilter p_filter) override final;

	/**********************/
	/**** VERTEX ARRAY ****/
	/**********************/
private:
	struct VertexFormatInfo {
		TightLocalVector<VkVertexInputBindingDescription> vk_bindings;
		TightLocalVector<VkVertexInputAttributeDescription> vk_attributes;
		VkPipelineVertexInputStateCreateInfo vk_create_info = {};
	};

public:
	virtual VertexFormatID vertex_format_create(VectorView<VertexAttribute> p_vertex_attribs) override final;
	virtual void vertex_format_free(VertexFormatID p_vertex_format) override final;

	/******************/
	/**** BARRIERS ****/
	/******************/

	virtual void command_pipeline_barrier(
			CommandBufferID p_cmd_buffer,
			BitField<PipelineStageBits> p_src_stages,
			BitField<PipelineStageBits> p_dst_stages,
			VectorView<MemoryBarrier> p_memory_barriers,
			VectorView<BufferBarrier> p_buffer_barriers,
			VectorView<TextureBarrier> p_texture_barriers) override final;

	/****************/
	/**** FENCES ****/
	/****************/

private:
	struct Fence {
		VkFence vk_fence = VK_NULL_HANDLE;
		CommandQueue *queue_signaled_from = nullptr;
	};

public:
	virtual FenceID fence_create() override final;
	virtual Error fence_wait(FenceID p_fence) override final;
	virtual void fence_free(FenceID p_fence) override final;

	/********************/
	/**** SEMAPHORES ****/
	/********************/

	virtual SemaphoreID semaphore_create() override final;
	virtual void semaphore_free(SemaphoreID p_semaphore) override final;

	/******************/
	/**** COMMANDS ****/
	/******************/

	// ----- QUEUE FAMILY -----

	virtual CommandQueueFamilyID command_queue_family_get(BitField<CommandQueueFamilyBits> p_cmd_queue_family_bits, RenderingContextDriver::SurfaceID p_surface = 0) override final;

	// ----- QUEUE -----
private:
	struct CommandQueue {
		LocalVector<VkSemaphore> present_semaphores;
		LocalVector<VkSemaphore> image_semaphores;
		LocalVector<SwapChain *> image_semaphores_swap_chains;
		LocalVector<uint32_t> pending_semaphores_for_execute;
		LocalVector<uint32_t> pending_semaphores_for_fence;
		LocalVector<uint32_t> free_image_semaphores;
		LocalVector<Pair<Fence *, uint32_t>> image_semaphores_for_fences;
		uint32_t queue_family = 0;
		uint32_t queue_index = 0;
		uint32_t present_semaphore_index = 0;
	};

public:
	virtual CommandQueueID command_queue_create(CommandQueueFamilyID p_cmd_queue_family, bool p_identify_as_main_queue = false) override final;
	virtual Error command_queue_execute_and_present(CommandQueueID p_cmd_queue, VectorView<SemaphoreID> p_wait_semaphores, VectorView<CommandBufferID> p_cmd_buffers, VectorView<SemaphoreID> p_cmd_semaphores, FenceID p_cmd_fence, VectorView<SwapChainID> p_swap_chains) override final;
	virtual void command_queue_free(CommandQueueID p_cmd_queue) override final;

private:
	// ----- POOL -----

	struct CommandPool {
		VkCommandPool vk_command_pool = VK_NULL_HANDLE;
		CommandBufferType buffer_type = COMMAND_BUFFER_TYPE_PRIMARY;
	};

public:
	virtual CommandPoolID command_pool_create(CommandQueueFamilyID p_cmd_queue_family, CommandBufferType p_cmd_buffer_type) override final;
	virtual bool command_pool_reset(CommandPoolID p_cmd_pool) override final;
	virtual void command_pool_free(CommandPoolID p_cmd_pool) override final;

	// ----- BUFFER -----

	virtual CommandBufferID command_buffer_create(CommandPoolID p_cmd_pool) override final;
	virtual bool command_buffer_begin(CommandBufferID p_cmd_buffer) override final;
	virtual bool command_buffer_begin_secondary(CommandBufferID p_cmd_buffer, RenderPassID p_render_pass, uint32_t p_subpass, FramebufferID p_framebuffer) override final;
	virtual void command_buffer_end(CommandBufferID p_cmd_buffer) override final;
	virtual void command_buffer_execute_secondary(CommandBufferID p_cmd_buffer, VectorView<CommandBufferID> p_secondary_cmd_buffers) override final;

	/********************/
	/**** SWAP CHAIN ****/
	/********************/

private:
	struct SwapChain {
		VkSwapchainKHR vk_swapchain = VK_NULL_HANDLE;
		RenderingContextDriver::SurfaceID surface = RenderingContextDriver::SurfaceID();
		VkFormat format = VK_FORMAT_UNDEFINED;
		VkColorSpaceKHR color_space = VK_COLOR_SPACE_SRGB_NONLINEAR_KHR;
		TightLocalVector<VkImage> images;
		TightLocalVector<VkImageView> image_views;
		TightLocalVector<FramebufferID> framebuffers;
		LocalVector<CommandQueue *> command_queues_acquired;
		LocalVector<uint32_t> command_queues_acquired_semaphores;
		RenderPassID render_pass;
		int pre_transform_rotation_degrees = 0;
		uint32_t image_index = 0;
#ifdef ANDROID_ENABLED
		uint64_t refresh_duration = 0;
#endif
	};

	void _swap_chain_release(SwapChain *p_swap_chain);

public:
	virtual SwapChainID swap_chain_create(RenderingContextDriver::SurfaceID p_surface) override final;
	virtual Error swap_chain_resize(CommandQueueID p_cmd_queue, SwapChainID p_swap_chain, uint32_t p_desired_framebuffer_count) override final;
	virtual FramebufferID swap_chain_acquire_framebuffer(CommandQueueID p_cmd_queue, SwapChainID p_swap_chain, bool &r_resize_required) override final;
	virtual RenderPassID swap_chain_get_render_pass(SwapChainID p_swap_chain) override final;
	virtual int swap_chain_get_pre_rotation_degrees(SwapChainID p_swap_chain) override final;
	virtual DataFormat swap_chain_get_format(SwapChainID p_swap_chain) override final;
	virtual void swap_chain_set_max_fps(SwapChainID p_swap_chain, int p_max_fps) override final;
	virtual void swap_chain_free(SwapChainID p_swap_chain) override final;

	/*********************/
	/**** FRAMEBUFFER ****/
	/*********************/

	struct Framebuffer {
		VkFramebuffer vk_framebuffer = VK_NULL_HANDLE;

		// Only filled in by a framebuffer created by a swap chain. Unused otherwise.
		VkImage swap_chain_image = VK_NULL_HANDLE;
		VkImageSubresourceRange swap_chain_image_subresource_range = {};
		bool swap_chain_acquired = false;
	};

	virtual FramebufferID framebuffer_create(RenderPassID p_render_pass, VectorView<TextureID> p_attachments, uint32_t p_width, uint32_t p_height) override final;
	virtual void framebuffer_free(FramebufferID p_framebuffer) override final;

	/****************/
	/**** SHADER ****/
	/****************/
private:
	struct ShaderBinary {
		// Version 1: initial.
		// Version 2: Added shader name.
		// Version 3: Added writable.
		// Version 4: 64-bit vertex input mask.
		// Version 5: Add 4 bytes padding to align the Data struct after the change in version 4.
		static const uint32_t VERSION = 5;

		struct DataBinding {
			uint32_t type = 0;
			uint32_t binding = 0;
			uint32_t stages = 0;
			uint32_t length = 0; // Size of arrays (in total elements), or UBOs (in bytes * total elements).
			uint32_t writable = 0;
		};

		struct SpecializationConstant {
			uint32_t type = 0;
			uint32_t constant_id = 0;
			uint32_t int_value = 0;
			uint32_t stage_flags = 0;
		};

		struct Data {
			uint64_t vertex_input_mask = 0;
			uint32_t fragment_output_mask = 0;
			uint32_t specialization_constants_count = 0;
			uint32_t is_compute = 0;
			uint32_t compute_local_size[3] = {};
			uint32_t set_count = 0;
			uint32_t push_constant_size = 0;
			uint32_t vk_push_constant_stages_mask = 0;
			uint32_t stage_count = 0;
			uint32_t shader_name_len = 0;
		};
	};

	struct ShaderInfo {
		VkShaderStageFlags vk_push_constant_stages = 0;
		TightLocalVector<VkPipelineShaderStageCreateInfo> vk_stages_create_info;
		TightLocalVector<VkDescriptorSetLayout> vk_descriptor_set_layouts;
		VkPipelineLayout vk_pipeline_layout = VK_NULL_HANDLE;
	};

public:
	virtual String shader_get_binary_cache_key() override final;
	virtual Vector<uint8_t> shader_compile_binary_from_spirv(VectorView<ShaderStageSPIRVData> p_spirv, const String &p_shader_name) override final;
	virtual ShaderID shader_create_from_bytecode(const Vector<uint8_t> &p_shader_binary, ShaderDescription &r_shader_desc, String &r_name, const Vector<ImmutableSampler> &p_immutable_samplers) override final;
	virtual void shader_free(ShaderID p_shader) override final;

	virtual void shader_destroy_modules(ShaderID p_shader) override final;
	/*********************/
	/**** UNIFORM SET ****/
	/*********************/

	// Descriptor sets require allocation from a pool.
	// The documentation on how to use pools properly
	// is scarce, and the documentation is strange.
	//
	// Basically, you can mix and match pools as you
	// like, but you'll run into fragmentation issues.
	// Because of this, the recommended approach is to
	// create a pool for every descriptor set type, as
	// this prevents fragmentation.
	//
	// This is implemented here as a having a list of
	// pools (each can contain up to 64 sets) for each
	// set layout. The amount of sets for each type
	// is used as the key.

private:
	static const uint32_t MAX_UNIFORM_POOL_ELEMENT = 65535;

	struct DescriptorSetPoolKey {
		uint16_t uniform_type[UNIFORM_TYPE_MAX] = {};

		bool operator<(const DescriptorSetPoolKey &p_other) const {
			return memcmp(uniform_type, p_other.uniform_type, sizeof(uniform_type)) < 0;
		}
	};

	using DescriptorSetPools = RBMap<DescriptorSetPoolKey, HashMap<VkDescriptorPool, uint32_t>>;
	DescriptorSetPools descriptor_set_pools;
	uint32_t max_descriptor_sets_per_pool = 0;

	HashMap<int, DescriptorSetPools> linear_descriptor_set_pools;
	bool linear_descriptor_pools_enabled = true;
	VkDescriptorPool _descriptor_set_pool_find_or_create(const DescriptorSetPoolKey &p_key, DescriptorSetPools::Iterator *r_pool_sets_it, int p_linear_pool_index);
	void _descriptor_set_pool_unreference(DescriptorSetPools::Iterator p_pool_sets_it, VkDescriptorPool p_vk_descriptor_pool, int p_linear_pool_index);

	// Global flag to toggle usage of immutable sampler when creating pipeline layouts.
	// It cannot change after creating the PSOs, since we need to skipping samplers when creating uniform sets.
	bool immutable_samplers_enabled = true;

	struct UniformSetInfo {
		VkDescriptorSet vk_descriptor_set = VK_NULL_HANDLE;
		VkDescriptorPool vk_descriptor_pool = VK_NULL_HANDLE;
		VkDescriptorPool vk_linear_descriptor_pool = VK_NULL_HANDLE;
		DescriptorSetPools::Iterator pool_sets_it;
	};

public:
	virtual UniformSetID uniform_set_create(VectorView<BoundUniform> p_uniforms, ShaderID p_shader, uint32_t p_set_index, int p_linear_pool_index) override final;
	virtual void linear_uniform_set_pools_reset(int p_linear_pool_index) override final;
	virtual void uniform_set_free(UniformSetID p_uniform_set) override final;
	virtual bool uniform_sets_have_linear_pools() const override final;

	// ----- COMMANDS -----

	virtual void command_uniform_set_prepare_for_use(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;

	/******************/
	/**** TRANSFER ****/
	/******************/

	virtual void command_clear_buffer(CommandBufferID p_cmd_buffer, BufferID p_buffer, uint64_t p_offset, uint64_t p_size) override final;
	virtual void command_copy_buffer(CommandBufferID p_cmd_buffer, BufferID p_src_buffer, BufferID p_dst_buffer, VectorView<BufferCopyRegion> p_regions) override final;

	virtual void command_copy_texture(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, VectorView<TextureCopyRegion> p_regions) override final;
	virtual void command_resolve_texture(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, uint32_t p_src_layer, uint32_t p_src_mipmap, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, uint32_t p_dst_layer, uint32_t p_dst_mipmap) override final;
	virtual void command_clear_color_texture(CommandBufferID p_cmd_buffer, TextureID p_texture, TextureLayout p_texture_layout, const Color &p_color, const TextureSubresourceRange &p_subresources) override final;

	virtual void command_copy_buffer_to_texture(CommandBufferID p_cmd_buffer, BufferID p_src_buffer, TextureID p_dst_texture, TextureLayout p_dst_texture_layout, VectorView<BufferTextureCopyRegion> p_regions) override final;
	virtual void command_copy_texture_to_buffer(CommandBufferID p_cmd_buffer, TextureID p_src_texture, TextureLayout p_src_texture_layout, BufferID p_dst_buffer, VectorView<BufferTextureCopyRegion> p_regions) override final;

	/******************/
	/**** PIPELINE ****/
	/******************/
private:
	struct PipelineCacheHeader {
		uint32_t magic = 0;
		uint32_t data_size = 0;
		uint64_t data_hash = 0;
		uint32_t vendor_id = 0;
		uint32_t device_id = 0;
		uint32_t driver_version = 0;
		uint8_t uuid[VK_UUID_SIZE] = {};
		uint8_t driver_abi = 0;
	};

	struct PipelineCache {
		String file_path;
		size_t current_size = 0;
		Vector<uint8_t> buffer; // Header then data.
		VkPipelineCache vk_cache = VK_NULL_HANDLE;
	};

	static int caching_instance_count;
	PipelineCache pipelines_cache;
	String pipeline_cache_id;
	HashMap<uint64_t, bool> has_comp_alpha;

public:
	virtual void pipeline_free(PipelineID p_pipeline) override final;

	// ----- BINDING -----

	virtual void command_bind_push_constants(CommandBufferID p_cmd_buffer, ShaderID p_shader, uint32_t p_first_index, VectorView<uint32_t> p_data) override final;

	// ----- CACHE -----

	virtual bool pipeline_cache_create(const Vector<uint8_t> &p_data) override final;
	virtual void pipeline_cache_free() override final;
	virtual size_t pipeline_cache_query_size() override final;
	virtual Vector<uint8_t> pipeline_cache_serialize() override final;

	/*******************/
	/**** RENDERING ****/
	/*******************/

	// ----- SUBPASS -----

	virtual RenderPassID render_pass_create(VectorView<Attachment> p_attachments, VectorView<Subpass> p_subpasses, VectorView<SubpassDependency> p_subpass_dependencies, uint32_t p_view_count) override final;
	virtual void render_pass_free(RenderPassID p_render_pass) override final;

	// ----- COMMANDS -----

	virtual void command_begin_render_pass(CommandBufferID p_cmd_buffer, RenderPassID p_render_pass, FramebufferID p_framebuffer, CommandBufferType p_cmd_buffer_type, const Rect2i &p_rect, VectorView<RenderPassClearValue> p_clear_values) override final;
	virtual void command_end_render_pass(CommandBufferID p_cmd_buffer) override final;
	virtual void command_next_render_subpass(CommandBufferID p_cmd_buffer, CommandBufferType p_cmd_buffer_type) override final;
	virtual void command_render_set_viewport(CommandBufferID p_cmd_buffer, VectorView<Rect2i> p_viewports) override final;
	virtual void command_render_set_scissor(CommandBufferID p_cmd_buffer, VectorView<Rect2i> p_scissors) override final;
	virtual void command_render_clear_attachments(CommandBufferID p_cmd_buffer, VectorView<AttachmentClear> p_attachment_clears, VectorView<Rect2i> p_rects) override final;

	// Binding.
	virtual void command_bind_render_pipeline(CommandBufferID p_cmd_buffer, PipelineID p_pipeline) override final;
	virtual void command_bind_render_uniform_set(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;
	virtual void command_bind_render_uniform_sets(CommandBufferID p_cmd_buffer, VectorView<UniformSetID> p_uniform_sets, ShaderID p_shader, uint32_t p_first_set_index, uint32_t p_set_count) override final;

	// Drawing.
	virtual void command_render_draw(CommandBufferID p_cmd_buffer, uint32_t p_vertex_count, uint32_t p_instance_count, uint32_t p_base_vertex, uint32_t p_first_instance) override final;
	virtual void command_render_draw_indexed(CommandBufferID p_cmd_buffer, uint32_t p_index_count, uint32_t p_instance_count, uint32_t p_first_index, int32_t p_vertex_offset, uint32_t p_first_instance) override final;
	virtual void command_render_draw_indexed_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, uint32_t p_draw_count, uint32_t p_stride) override final;
	virtual void command_render_draw_indexed_indirect_count(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, BufferID p_count_buffer, uint64_t p_count_buffer_offset, uint32_t p_max_draw_count, uint32_t p_stride) override final;
	virtual void command_render_draw_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, uint32_t p_draw_count, uint32_t p_stride) override final;
	virtual void command_render_draw_indirect_count(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset, BufferID p_count_buffer, uint64_t p_count_buffer_offset, uint32_t p_max_draw_count, uint32_t p_stride) override final;

	// Buffer binding.
	virtual void command_render_bind_vertex_buffers(CommandBufferID p_cmd_buffer, uint32_t p_binding_count, const BufferID *p_buffers, const uint64_t *p_offsets) override final;
	virtual void command_render_bind_index_buffer(CommandBufferID p_cmd_buffer, BufferID p_buffer, IndexBufferFormat p_format, uint64_t p_offset) override final;

	// Dynamic state.
	virtual void command_render_set_blend_constants(CommandBufferID p_cmd_buffer, const Color &p_constants) override final;
	virtual void command_render_set_line_width(CommandBufferID p_cmd_buffer, float p_width) override final;

	// ----- PIPELINE -----

	virtual PipelineID render_pipeline_create(
			ShaderID p_shader,
			VertexFormatID p_vertex_format,
			RenderPrimitive p_render_primitive,
			PipelineRasterizationState p_rasterization_state,
			PipelineMultisampleState p_multisample_state,
			PipelineDepthStencilState p_depth_stencil_state,
			PipelineColorBlendState p_blend_state,
			VectorView<int32_t> p_color_attachments,
			BitField<PipelineDynamicStateFlags> p_dynamic_state,
			RenderPassID p_render_pass,
			uint32_t p_render_subpass,
			VectorView<PipelineSpecializationConstant> p_specialization_constants) override final;

	/*****************/
	/**** COMPUTE ****/
	/*****************/

	// ----- COMMANDS -----

	// Binding.
	virtual void command_bind_compute_pipeline(CommandBufferID p_cmd_buffer, PipelineID p_pipeline) override final;
	virtual void command_bind_compute_uniform_set(CommandBufferID p_cmd_buffer, UniformSetID p_uniform_set, ShaderID p_shader, uint32_t p_set_index) override final;
	virtual void command_bind_compute_uniform_sets(CommandBufferID p_cmd_buffer, VectorView<UniformSetID> p_uniform_sets, ShaderID p_shader, uint32_t p_first_set_index, uint32_t p_set_count) override final;

	// Dispatching.
	virtual void command_compute_dispatch(CommandBufferID p_cmd_buffer, uint32_t p_x_groups, uint32_t p_y_groups, uint32_t p_z_groups) override final;
	virtual void command_compute_dispatch_indirect(CommandBufferID p_cmd_buffer, BufferID p_indirect_buffer, uint64_t p_offset) override final;

	// ----- PIPELINE -----

	virtual PipelineID compute_pipeline_create(ShaderID p_shader, VectorView<PipelineSpecializationConstant> p_specialization_constants) override final;

	/*****************/
	/**** QUERIES ****/
	/*****************/

	// ----- TIMESTAMP -----

	// Basic.
	virtual QueryPoolID timestamp_query_pool_create(uint32_t p_query_count) override final;
	virtual void timestamp_query_pool_free(QueryPoolID p_pool_id) override final;
	virtual void timestamp_query_pool_get_results(QueryPoolID p_pool_id, uint32_t p_query_count, uint64_t *r_results) override final;
	virtual uint64_t timestamp_query_result_to_time(uint64_t p_result) override final;

	// Commands.
	virtual void command_timestamp_query_pool_reset(CommandBufferID p_cmd_buffer, QueryPoolID p_pool_id, uint32_t p_query_count) override final;
	virtual void command_timestamp_write(CommandBufferID p_cmd_buffer, QueryPoolID p_pool_id, uint32_t p_index) override final;

	/****************/
	/**** LABELS ****/
	/****************/

	virtual void command_begin_label(CommandBufferID p_cmd_buffer, const char *p_label_name, const Color &p_color) override final;
	virtual void command_end_label(CommandBufferID p_cmd_buffer) override final;

	/****************/
	/**** DEBUG *****/
	/****************/
	virtual void command_insert_breadcrumb(CommandBufferID p_cmd_buffer, uint32_t p_data) override final;
	void print_lost_device_info();
	void on_device_lost() const;
	static String get_vulkan_result(VkResult err);

	/********************/
	/**** SUBMISSION ****/
	/********************/

	virtual void begin_segment(uint32_t p_frame_index, uint32_t p_frames_drawn) override final;
	virtual void end_segment() override final;

	/**************/
	/**** MISC ****/
	/**************/

	virtual void set_object_name(ObjectType p_type, ID p_driver_id, const String &p_name) override final;
	virtual uint64_t get_resource_native_handle(DriverResource p_type, ID p_driver_id) override final;
	virtual uint64_t get_total_memory_used() override final;
	virtual uint64_t get_lazily_memory_used() override final;
	virtual uint64_t limit_get(Limit p_limit) override final;
	virtual uint64_t api_trait_get(ApiTrait p_trait) override final;
	virtual bool has_feature(Features p_feature) override final;
	virtual const MultiviewCapabilities &get_multiview_capabilities() override final;
	virtual String get_api_name() const override final;
	virtual String get_api_version() const override final;
	virtual String get_pipeline_cache_uuid() const override final;
	virtual const Capabilities &get_capabilities() const override final;

	virtual bool is_composite_alpha_supported(CommandQueueID p_queue) const override final;

private:
	/*********************/
	/**** BOOKKEEPING ****/
	/*********************/

	using VersatileResource = VersatileResourceTemplate<
			BufferInfo,
			TextureInfo,
			VertexFormatInfo,
			ShaderInfo,
			UniformSetInfo>;
	PagedAllocator<VersatileResource, true> resources_allocator;

	/******************/

public:
	RenderingDeviceDriverVulkan(RenderingContextDriverVulkan *p_context_driver);
<--- Class 'RenderingDeviceDriverVulkan' has a constructor with 1 argument that is not explicit. [+]
Class 'RenderingDeviceDriverVulkan' has a constructor with 1 argument that is not explicit. Such constructors should in general be explicit for type safety reasons. Using the explicit keyword in the constructor means some mistakes when using the class can be avoided.
	virtual ~RenderingDeviceDriverVulkan();
};

using VKC = RenderingContextDriverVulkan;

#endif // RENDERING_DEVICE_DRIVER_VULKAN_H