InstanceBuilder.h

// Copyright 2022 ShenMian
// License(Apache-2.0)
 
#pragma once
 
#include "../VKInstance.h"
#include <string_view>
#include <vector>
 
class InstanceBuilder final
{
public:
    InstanceBuilder();
 
    VKInstance build();
 
    InstanceBuilder& set_engine_name(std::string_view name) noexcept;
 
    InstanceBuilder& set_engine_version(uint32_t major, uint32_t minor, uint32_t patch) noexcept;
 
    InstanceBuilder& set_app_name(std::string_view name) noexcept;
 
    InstanceBuilder& set_app_version(uint32_t major, uint32_t minor, uint32_t patch) noexcept;
 
    InstanceBuilder& enable_layer(std::string_view name);
 
    InstanceBuilder& enable_extension(std::string_view name);
 
    InstanceBuilder& enable_validation_layers();
 
    InstanceBuilder& enable_debug_messenger();
 
    InstanceBuilder& set_debug_callback(PFN_vkDebugUtilsMessengerCallbackEXT callback) noexcept;
 
private:
    bool is_layer_available(std::string_view name) const;
    bool is_extension_available(std::string_view name) const;
 
    void enable_window_extensions();
    void create_debug_messager(VkInstance instance);
    void destroy_debug_messager(VkInstance instance);
 
    VkApplicationInfo    app_info_      = {};
    VkInstanceCreateInfo instance_info_ = {};
 
    VkDebugUtilsMessengerEXT debug_messenger_;
 
    std::vector<const char*> enabled_layers_;
    std::vector<const char*> enabled_extensions_;
 
    std::vector<VkLayerProperties>     available_layers_;
    std::vector<VkExtensionProperties> available_extensions_;
 
    struct
    {
        bool enable_validation_layers = false;
 
        bool                                enable_debug_messager = false;
        VkDebugUtilsMessageSeverityFlagsEXT debug_message_severity =
            VK_DEBUG_UTILS_MESSAGE_SEVERITY_WARNING_BIT_EXT | VK_DEBUG_UTILS_MESSAGE_SEVERITY_ERROR_BIT_EXT;
        VkDebugUtilsMessageTypeFlagsEXT debug_message_type = VK_DEBUG_UTILS_MESSAGE_TYPE_GENERAL_BIT_EXT |
                                                           VK_DEBUG_UTILS_MESSAGE_TYPE_VALIDATION_BIT_EXT |
                                                           VK_DEBUG_UTILS_MESSAGE_TYPE_PERFORMANCE_BIT_EXT;
        PFN_vkDebugUtilsMessengerCallbackEXT debug_message_callback = nullptr;
    } info_;
};