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-rw-r--r--3rdparty/imgui/examples/example_sdl_vulkan/main.cpp490
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diff --git a/3rdparty/imgui/examples/example_sdl_vulkan/main.cpp b/3rdparty/imgui/examples/example_sdl_vulkan/main.cpp
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+++ b/3rdparty/imgui/examples/example_sdl_vulkan/main.cpp
@@ -0,0 +1,490 @@
+// dear imgui: standalone example application for SDL2 + Vulkan
+// If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp.
+
+#include "imgui.h"
+#include "imgui_impl_sdl.h"
+#include "imgui_impl_vulkan.h"
+#include <stdio.h> // printf, fprintf
+#include <stdlib.h> // abort
+#include <SDL.h>
+#include <SDL_vulkan.h>
+#include <vulkan/vulkan.h>
+
+//#define IMGUI_UNLIMITED_FRAME_RATE
+#ifdef _DEBUG
+#define IMGUI_VULKAN_DEBUG_REPORT
+#endif
+
+static VkAllocationCallbacks* g_Allocator = NULL;
+static VkInstance g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice g_Device = VK_NULL_HANDLE;
+static uint32_t g_QueueFamily = (uint32_t)-1;
+static VkQueue g_Queue = VK_NULL_HANDLE;
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+static VkPipelineCache g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool g_DescriptorPool = VK_NULL_HANDLE;
+
+static ImGui_ImplVulkanH_WindowData g_WindowData;
+
+static void check_vk_result(VkResult err)
+{
+ if (err == 0) return;
+ printf("VkResult %d\n", err);
+ if (err < 0)
+ abort();
+}
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
+{
+ (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
+ fprintf(stderr, "[vulkan] ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
+ return VK_FALSE;
+}
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+static void SetupVulkan(const char** extensions, uint32_t extensions_count)
+{
+ VkResult err;
+
+ // Create Vulkan Instance
+ {
+ VkInstanceCreateInfo create_info = {};
+ create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+ create_info.enabledExtensionCount = extensions_count;
+ create_info.ppEnabledExtensionNames = extensions;
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+ // Enabling multiple validation layers grouped as LunarG standard validation
+ const char* layers[] = { "VK_LAYER_LUNARG_standard_validation" };
+ create_info.enabledLayerCount = 1;
+ create_info.ppEnabledLayerNames = layers;
+
+ // Enable debug report extension (we need additional storage, so we duplicate the user array to add our new extension to it)
+ const char** extensions_ext = (const char**)malloc(sizeof(const char*) * (extensions_count + 1));
+ memcpy(extensions_ext, extensions, extensions_count * sizeof(const char*));
+ extensions_ext[extensions_count] = "VK_EXT_debug_report";
+ create_info.enabledExtensionCount = extensions_count + 1;
+ create_info.ppEnabledExtensionNames = extensions_ext;
+
+ // Create Vulkan Instance
+ err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+ check_vk_result(err);
+ free(extensions_ext);
+
+ // Get the function pointer (required for any extensions)
+ auto vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
+ IM_ASSERT(vkCreateDebugReportCallbackEXT != NULL);
+
+ // Setup the debug report callback
+ VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
+ debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
+ debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
+ debug_report_ci.pfnCallback = debug_report;
+ debug_report_ci.pUserData = NULL;
+ err = vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
+ check_vk_result(err);
+#else
+ // Create Vulkan Instance without any debug feature
+ err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+ check_vk_result(err);
+#endif
+ }
+
+ // Select GPU
+ {
+ uint32_t gpu_count;
+ err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, NULL);
+ check_vk_result(err);
+
+ VkPhysicalDevice* gpus = (VkPhysicalDevice*)malloc(sizeof(VkPhysicalDevice) * gpu_count);
+ err = vkEnumeratePhysicalDevices(g_Instance, &gpu_count, gpus);
+ check_vk_result(err);
+
+ // If a number >1 of GPUs got reported, you should find the best fit GPU for your purpose
+ // e.g. VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU if available, or with the greatest memory available, etc.
+ // for sake of simplicity we'll just take the first one, assuming it has a graphics queue family.
+ g_PhysicalDevice = gpus[0];
+ free(gpus);
+ }
+
+ // Select graphics queue family
+ {
+ uint32_t count;
+ vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, NULL);
+ VkQueueFamilyProperties* queues = (VkQueueFamilyProperties*)malloc(sizeof(VkQueueFamilyProperties) * count);
+ vkGetPhysicalDeviceQueueFamilyProperties(g_PhysicalDevice, &count, queues);
+ for (uint32_t i = 0; i < count; i++)
+ if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT)
+ {
+ g_QueueFamily = i;
+ break;
+ }
+ free(queues);
+ IM_ASSERT(g_QueueFamily != -1);
+ }
+
+ // Create Logical Device (with 1 queue)
+ {
+ int device_extension_count = 1;
+ const char* device_extensions[] = { "VK_KHR_swapchain" };
+ const float queue_priority[] = { 1.0f };
+ VkDeviceQueueCreateInfo queue_info[1] = {};
+ queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+ queue_info[0].queueFamilyIndex = g_QueueFamily;
+ queue_info[0].queueCount = 1;
+ queue_info[0].pQueuePriorities = queue_priority;
+ VkDeviceCreateInfo create_info = {};
+ create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+ create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
+ create_info.pQueueCreateInfos = queue_info;
+ create_info.enabledExtensionCount = device_extension_count;
+ create_info.ppEnabledExtensionNames = device_extensions;
+ err = vkCreateDevice(g_PhysicalDevice, &create_info, g_Allocator, &g_Device);
+ check_vk_result(err);
+ vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
+ }
+
+ // Create Descriptor Pool
+ {
+ VkDescriptorPoolSize pool_sizes[] =
+ {
+ { VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
+ { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
+ { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
+ { VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
+ { VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
+ { VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
+ { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
+ { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
+ { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
+ { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
+ { VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
+ };
+ VkDescriptorPoolCreateInfo pool_info = {};
+ pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+ pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+ pool_info.maxSets = 1000 * IM_ARRAYSIZE(pool_sizes);
+ pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
+ pool_info.pPoolSizes = pool_sizes;
+ err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
+ check_vk_result(err);
+ }
+}
+
+static void SetupVulkanWindowData(ImGui_ImplVulkanH_WindowData* wd, VkSurfaceKHR surface, int width, int height)
+{
+ wd->Surface = surface;
+
+ // Check for WSI support
+ VkBool32 res;
+ vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, wd->Surface, &res);
+ if (res != VK_TRUE)
+ {
+ fprintf(stderr, "Error no WSI support on physical device 0\n");
+ exit(-1);
+ }
+
+ // Select Surface Format
+ const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
+ const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+ wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
+
+ // Select Present Mode
+#ifdef IMGUI_UNLIMITED_FRAME_RATE
+ VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
+#else
+ VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
+#endif
+ wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
+ //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
+
+ // Create SwapChain, RenderPass, Framebuffer, etc.
+ ImGui_ImplVulkanH_CreateWindowDataCommandBuffers(g_PhysicalDevice, g_Device, g_QueueFamily, wd, g_Allocator);
+ ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, wd, g_Allocator, width, height);
+}
+
+static void CleanupVulkan()
+{
+ ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
+ ImGui_ImplVulkanH_DestroyWindowData(g_Instance, g_Device, wd, g_Allocator);
+ vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
+
+#ifdef IMGUI_VULKAN_DEBUG_REPORT
+ // Remove the debug report callback
+ auto vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
+ vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
+#endif // IMGUI_VULKAN_DEBUG_REPORT
+
+ vkDestroyDevice(g_Device, g_Allocator);
+ vkDestroyInstance(g_Instance, g_Allocator);
+}
+
+static void FrameRender(ImGui_ImplVulkanH_WindowData* wd)
+{
+ VkResult err;
+
+ VkSemaphore& image_acquired_semaphore = wd->Frames[wd->FrameIndex].ImageAcquiredSemaphore;
+ err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+ check_vk_result(err);
+
+ ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
+ {
+ err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX); // wait indefinitely instead of periodically checking
+ check_vk_result(err);
+
+ err = vkResetFences(g_Device, 1, &fd->Fence);
+ check_vk_result(err);
+ }
+ {
+ err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
+ check_vk_result(err);
+ VkCommandBufferBeginInfo info = {};
+ info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+ info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+ err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+ check_vk_result(err);
+ }
+ {
+ VkRenderPassBeginInfo info = {};
+ info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+ info.renderPass = wd->RenderPass;
+ info.framebuffer = wd->Framebuffer[wd->FrameIndex];
+ info.renderArea.extent.width = wd->Width;
+ info.renderArea.extent.height = wd->Height;
+ info.clearValueCount = 1;
+ info.pClearValues = &wd->ClearValue;
+ vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+ }
+
+ // Record Imgui Draw Data and draw funcs into command buffer
+ ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), fd->CommandBuffer);
+
+ // Submit command buffer
+ vkCmdEndRenderPass(fd->CommandBuffer);
+ {
+ VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+ VkSubmitInfo info = {};
+ info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+ info.waitSemaphoreCount = 1;
+ info.pWaitSemaphores = &image_acquired_semaphore;
+ info.pWaitDstStageMask = &wait_stage;
+ info.commandBufferCount = 1;
+ info.pCommandBuffers = &fd->CommandBuffer;
+ info.signalSemaphoreCount = 1;
+ info.pSignalSemaphores = &fd->RenderCompleteSemaphore;
+
+ err = vkEndCommandBuffer(fd->CommandBuffer);
+ check_vk_result(err);
+ err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
+ check_vk_result(err);
+ }
+}
+
+static void FramePresent(ImGui_ImplVulkanH_WindowData* wd)
+{
+ ImGui_ImplVulkanH_FrameData* fd = &wd->Frames[wd->FrameIndex];
+ VkPresentInfoKHR info = {};
+ info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+ info.waitSemaphoreCount = 1;
+ info.pWaitSemaphores = &fd->RenderCompleteSemaphore;
+ info.swapchainCount = 1;
+ info.pSwapchains = &wd->Swapchain;
+ info.pImageIndices = &wd->FrameIndex;
+ VkResult err = vkQueuePresentKHR(g_Queue, &info);
+ check_vk_result(err);
+}
+
+int main(int, char**)
+{
+ // Setup SDL
+ if (SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER) != 0)
+ {
+ printf("Error: %s\n", SDL_GetError());
+ return 1;
+ }
+
+ // Setup window
+ SDL_DisplayMode current;
+ SDL_GetCurrentDisplayMode(0, &current);
+ SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Vulkan example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, SDL_WINDOW_VULKAN|SDL_WINDOW_RESIZABLE);
+
+ // Setup Vulkan
+ uint32_t extensions_count = 0;
+ SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, NULL);
+ const char** extensions = new const char*[extensions_count];
+ SDL_Vulkan_GetInstanceExtensions(window, &extensions_count, extensions);
+ SetupVulkan(extensions, extensions_count);
+ delete[] extensions;
+
+ // Create Window Surface
+ VkSurfaceKHR surface;
+ VkResult err;
+ if (SDL_Vulkan_CreateSurface(window, g_Instance, &surface) == 0)
+ {
+ printf("Failed to create Vulkan surface.\n");
+ return 1;
+ }
+
+ // Create Framebuffers
+ int w, h;
+ SDL_GetWindowSize(window, &w, &h);
+ ImGui_ImplVulkanH_WindowData* wd = &g_WindowData;
+ SetupVulkanWindowData(wd, surface, w, h);
+
+ // Setup Dear ImGui binding
+ ImGui::CreateContext();
+ ImGuiIO& io = ImGui::GetIO(); (void)io;
+ //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
+
+ // Setup SDL binding
+ ImGui_ImplSDL2_InitForVulkan(window);
+
+ // Setup Vulkan binding
+ ImGui_ImplVulkan_InitInfo init_info = {};
+ init_info.Instance = g_Instance;
+ init_info.PhysicalDevice = g_PhysicalDevice;
+ init_info.Device = g_Device;
+ init_info.QueueFamily = g_QueueFamily;
+ init_info.Queue = g_Queue;
+ init_info.PipelineCache = g_PipelineCache;
+ init_info.DescriptorPool = g_DescriptorPool;
+ init_info.Allocator = g_Allocator;
+ init_info.CheckVkResultFn = check_vk_result;
+ ImGui_ImplVulkan_Init(&init_info, wd->RenderPass);
+
+ // Setup style
+ ImGui::StyleColorsDark();
+ //ImGui::StyleColorsClassic();
+
+ // Load Fonts
+ // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+ // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple.
+ // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit).
+ // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call.
+ // - Read 'misc/fonts/README.txt' for more instructions and details.
+ // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+ //io.Fonts->AddFontDefault();
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f);
+ //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f);
+ //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
+ //IM_ASSERT(font != NULL);
+
+ // Upload Fonts
+ {
+ // Use any command queue
+ VkCommandPool command_pool = wd->Frames[wd->FrameIndex].CommandPool;
+ VkCommandBuffer command_buffer = wd->Frames[wd->FrameIndex].CommandBuffer;
+
+ err = vkResetCommandPool(g_Device, command_pool, 0);
+ check_vk_result(err);
+ VkCommandBufferBeginInfo begin_info = {};
+ begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+ begin_info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+ err = vkBeginCommandBuffer(command_buffer, &begin_info);
+ check_vk_result(err);
+
+ ImGui_ImplVulkan_CreateFontsTexture(command_buffer);
+
+ VkSubmitInfo end_info = {};
+ end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+ end_info.commandBufferCount = 1;
+ end_info.pCommandBuffers = &command_buffer;
+ err = vkEndCommandBuffer(command_buffer);
+ check_vk_result(err);
+ err = vkQueueSubmit(g_Queue, 1, &end_info, VK_NULL_HANDLE);
+ check_vk_result(err);
+
+ err = vkDeviceWaitIdle(g_Device);
+ check_vk_result(err);
+ ImGui_ImplVulkan_InvalidateFontUploadObjects();
+ }
+
+ bool show_demo_window = true;
+ bool show_another_window = false;
+ ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+ // Main loop
+ bool done = false;
+ while (!done)
+ {
+ // Poll and handle events (inputs, window resize, etc.)
+ // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+ // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application.
+ // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application.
+ // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+ SDL_Event event;
+ while (SDL_PollEvent(&event))
+ {
+ ImGui_ImplSDL2_ProcessEvent(&event);
+ if (event.type == SDL_QUIT)
+ done = true;
+ if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_RESIZED && event.window.windowID == SDL_GetWindowID(window))
+ ImGui_ImplVulkanH_CreateWindowDataSwapChainAndFramebuffer(g_PhysicalDevice, g_Device, &g_WindowData, g_Allocator, (int)event.window.data1, (int)event.window.data2);
+ }
+
+ // Start the Dear ImGui frame
+ ImGui_ImplVulkan_NewFrame();
+ ImGui_ImplSDL2_NewFrame(window);
+ ImGui::NewFrame();
+
+ // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+ if (show_demo_window)
+ ImGui::ShowDemoWindow(&show_demo_window);
+
+ // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window.
+ {
+ static float f = 0.0f;
+ static int counter = 0;
+
+ ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it.
+
+ ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too)
+ ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state
+ ImGui::Checkbox("Another Window", &show_another_window);
+
+ ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f
+ ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+ if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated)
+ counter++;
+ ImGui::SameLine();
+ ImGui::Text("counter = %d", counter);
+
+ ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
+ ImGui::End();
+ }
+
+ // 3. Show another simple window.
+ if (show_another_window)
+ {
+ ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+ ImGui::Text("Hello from another window!");
+ if (ImGui::Button("Close Me"))
+ show_another_window = false;
+ ImGui::End();
+ }
+
+ // Rendering
+ ImGui::Render();
+ memcpy(&wd->ClearValue.color.float32[0], &clear_color, 4 * sizeof(float));
+ FrameRender(wd);
+
+ FramePresent(wd);
+ }
+
+ // Cleanup
+ err = vkDeviceWaitIdle(g_Device);
+ check_vk_result(err);
+ ImGui_ImplVulkan_Shutdown();
+ ImGui_ImplSDL2_Shutdown();
+ ImGui::DestroyContext();
+ SDL_DestroyWindow(window);
+ CleanupVulkan();
+ SDL_Quit();
+
+ return 0;
+}