Merge branch 'master' of github.com:YosysHQ/nextpnr into router_improve

3 files changed, 723 insertions, 0 deletions

diff --git a/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj b/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
new file mode 100644
index 00000000..622dc093
--- /dev/null
+++ b/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj
@@ -0,0 +1,175 @@
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+      <Platform>x64</Platform>
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+  <PropertyGroup Label="Globals">
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+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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+    <ClCompile Include="..\..\imgui_demo.cpp" />
+    <ClCompile Include="..\..\imgui_draw.cpp" />
+    <ClCompile Include="..\..\imgui_widgets.cpp" />
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+    <ClInclude Include="..\..\imgui.h" />
+    <ClInclude Include="..\..\imgui_internal.h" />
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+    <ClInclude Include="..\imgui_impl_vulkan.h" />
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+    <None Include="..\..\misc\natvis\imgui.natvis" />
+    <None Include="..\README.txt" />
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+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
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\ No newline at end of file
diff --git a/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters b/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
new file mode 100644
index 00000000..6f082524
--- /dev/null
+++ b/3rdparty/imgui/examples/example_sdl_vulkan/example_sdl_vulkan.vcxproj.filters
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+    <Filter Include="sources">
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+  <ItemGroup>
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\ No newline at end of file
diff --git a/3rdparty/imgui/examples/example_sdl_vulkan/main.cpp b/3rdparty/imgui/examples/example_sdl_vulkan/main.cpp
new file mode 100644
index 00000000..dc7da3ea
--- /dev/null
+++ 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;
+}