94 lines
2.8 KiB
C++
94 lines
2.8 KiB
C++
/* VulkanApp.cpp */
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#include "VulkanApp.hpp"
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void
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MinimalImGuiVulkan::run() {
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this->init_sdl_window();
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this->init_vulkan();
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this->init_imgui();
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this->main_loop();
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this->cleanup();
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}
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void
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MinimalImGuiVulkan::init_sdl_window() {
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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throw std::runtime_error("Failed to initialize SDL!");
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}
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this->window_ = SDL_CreateWindow(
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"ImGui Vulkan SDL2 Example",
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SDL_WINDOWPOS_CENTERED,
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SDL_WINDOWPOS_CENTERED,
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1000, 800,
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SDL_WINDOW_VULKAN | SDL_WINDOW_RESIZABLE
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);
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if (!window_) {
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throw std::runtime_error("Failed to create SDL window!");
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}
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}
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void
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MinimalImGuiVulkan::init_vulkan() {
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this->create_instance();
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this->create_surface();
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this->pick_physical_device();
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this->create_logical_device();
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this->create_swapchain();
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this->create_image_views();
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this->create_render_pass(); // must come before createFrameBuffers
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this->create_framebuffers();
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this->create_command_pool();
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this->create_command_buffers();
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this->create_sync_objects();
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this->create_descriptor_pool();
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}
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void
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MinimalImGuiVulkan::create_instance() {
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VkApplicationInfo appInfo{};
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appInfo.sType = VK_STRUCTURE_TYPE_APPLICATION_INFO;
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appInfo.pApplicationName = "ImGui Vulkan App";
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appInfo.applicationVersion = VK_MAKE_VERSION(1, 0, 0);
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appInfo.pEngineName = "No Engine";
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appInfo.engineVersion = VK_MAKE_VERSION(1, 0, 0);
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appInfo.apiVersion = VK_API_VERSION_1_0;
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VkInstanceCreateInfo createInfo{};
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createInfo.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
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createInfo.pApplicationInfo = &appInfo;
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uint32_t extensionCount = 0;
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if (!SDL_Vulkan_GetInstanceExtensions(window_, &extensionCount, nullptr)) {
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throw std::runtime_error("Failed to get SDL Vulkan extensions!");
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}
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std::vector<const char*> extensions(extensionCount);
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if (!SDL_Vulkan_GetInstanceExtensions(window_, &extensionCount, extensions.data())) {
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throw std::runtime_error("Failed to get SDL Vulkan extensions!");
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}
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#ifdef __apple__
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// Add portability extension for MoltenVK (macOS)
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extensions.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
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#endif
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createInfo.enabledExtensionCount = extensions.size();
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createInfo.ppEnabledExtensionNames = extensions.data();
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createInfo.enabledLayerCount = 0;
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#ifdef __apple__
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// CRITICAL: Enable portability enumeration flag for MoltenVK
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createInfo.flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
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#endif
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int result = vkCreateInstance(&createInfo, nullptr, &(this->instance_));
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if (result != VK_SUCCESS) {
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printf("vkCreateInstance failed with error: %d\n", result);
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throw std::runtime_error("Failed to create instance!");
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}
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}
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/* end VulkanApp.cpp */
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