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			540 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			540 lines
		
	
	
		
			21 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| // ImGui - standalone example application for Glfw + Vulkan, using programmable pipeline
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| // If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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| 
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| #include <imgui.h>
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| 
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| #include <stdio.h>          // printf, fprintf
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| #include <stdlib.h>         // abort
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| #define GLFW_INCLUDE_NONE
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| #define GLFW_INCLUDE_VULKAN
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| #include <GLFW/glfw3.h>
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| 
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| #include "imgui_impl_glfw_vulkan.h"
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| 
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| #define IMGUI_MAX_POSSIBLE_BACK_BUFFERS 16
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| 
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| static VkAllocationCallbacks*   g_Allocator = NULL;
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| static VkInstance               g_Instance = VK_NULL_HANDLE;
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| static VkSurfaceKHR             g_Surface = VK_NULL_HANDLE;
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| static VkPhysicalDevice         g_Gpu = VK_NULL_HANDLE;
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| static VkDevice                 g_Device = VK_NULL_HANDLE;
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| static VkSwapchainKHR           g_Swapchain = VK_NULL_HANDLE;
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| static VkRenderPass             g_RenderPass = VK_NULL_HANDLE;
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| static uint32_t                 g_QueueFamily = 0;
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| static VkQueue                  g_Queue = VK_NULL_HANDLE;
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| 
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| static VkFormat                 g_Format = VK_FORMAT_B8G8R8A8_UNORM;
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| static VkColorSpaceKHR          g_ColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
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| static VkImageSubresourceRange  g_ImageRange = {VK_IMAGE_ASPECT_COLOR_BIT, 0, 1, 0, 1};
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| 
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| static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
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| static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
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| 
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| static int                      fb_width, fb_height;
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| static uint32_t                 g_BackBufferIndex = 0;
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| static uint32_t                 g_BackBufferCount = 0;
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| static VkImage                  g_BackBuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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| static VkImageView              g_BackBufferView[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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| static VkFramebuffer            g_Framebuffer[IMGUI_MAX_POSSIBLE_BACK_BUFFERS] = {};
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| 
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| static uint32_t                 g_FrameIndex = 0;
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| static VkCommandPool            g_CommandPool[IMGUI_VK_QUEUED_FRAMES];
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| static VkCommandBuffer          g_CommandBuffer[IMGUI_VK_QUEUED_FRAMES];
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| static VkFence                  g_Fence[IMGUI_VK_QUEUED_FRAMES];
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| static VkSemaphore              g_Semaphore[IMGUI_VK_QUEUED_FRAMES];
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| 
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| static VkClearValue             g_ClearValue = {};
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| 
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| static void check_vk_result(VkResult err)
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| {
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|     if (err == 0) return;
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|     printf("VkResult %d\n", err);
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|     if (err < 0) 
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|         abort();
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| }
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| 
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| static void resize_vulkan(GLFWwindow* /*window*/, int w, int h)
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| {
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|     VkResult err;
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|     VkSwapchainKHR old_swapchain = g_Swapchain;
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|     err = vkDeviceWaitIdle(g_Device);
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|     check_vk_result(err);
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| 
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|     // Destroy old Framebuffer:
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|     for (uint32_t i=0; i<g_BackBufferCount; i++)
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|         if (g_BackBufferView[i])
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|             vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
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|      for(uint32_t i=0; i<g_BackBufferCount; i++)
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|         if (g_Framebuffer[i])
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|             vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
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|     if (g_RenderPass)
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|         vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
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| 
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|     // Create Swapchain:
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|     {
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|         VkSwapchainCreateInfoKHR info = {};
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|         info.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
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|         info.surface = g_Surface;
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|         info.imageFormat = g_Format;
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|         info.imageColorSpace = g_ColorSpace;
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|         info.imageArrayLayers = 1;
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|         info.imageUsage |= VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
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|         info.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
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|         info.preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
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|         info.compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
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|         info.presentMode = VK_PRESENT_MODE_FIFO_KHR;
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|         info.clipped = VK_TRUE;
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|         info.oldSwapchain = old_swapchain;
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|         VkSurfaceCapabilitiesKHR cap;
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|         err = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(g_Gpu, g_Surface, &cap);
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|         check_vk_result(err);
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|         info.minImageCount = (cap.minImageCount + 2 < cap.maxImageCount) ? (cap.minImageCount + 2) : cap.maxImageCount;
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|         if (cap.currentExtent.width == 0xffffffff)
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|         {
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|             fb_width = w;
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|             fb_height = h;
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|             info.imageExtent.width = fb_width;
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|             info.imageExtent.height = fb_height;
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|         }
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|         else
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|         {
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|             fb_width = cap.currentExtent.width;
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|             fb_height = cap.currentExtent.height;
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|             info.imageExtent.width = fb_width;
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|             info.imageExtent.height = fb_height;
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|         }
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|         err = vkCreateSwapchainKHR(g_Device, &info, g_Allocator, &g_Swapchain);
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|         check_vk_result(err);
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|         err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, NULL);
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|         check_vk_result(err);
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|         err = vkGetSwapchainImagesKHR(g_Device, g_Swapchain, &g_BackBufferCount, g_BackBuffer);
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|         check_vk_result(err);
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|     }
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|     if (old_swapchain)
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|         vkDestroySwapchainKHR(g_Device, old_swapchain, g_Allocator);
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| 
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|     // Create the Render Pass:
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|     {
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|         VkAttachmentDescription attachment = {};
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|         attachment.format = g_Format;
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|         attachment.samples = VK_SAMPLE_COUNT_1_BIT;
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|         attachment.loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
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|         attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
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|         attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
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|         attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
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|         attachment.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
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|         attachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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|         VkAttachmentReference color_attachment = {};
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|         color_attachment.attachment = 0;
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|         color_attachment.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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|         VkSubpassDescription subpass = {};
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|         subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
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|         subpass.colorAttachmentCount = 1;
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|         subpass.pColorAttachments = &color_attachment;
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|         VkRenderPassCreateInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
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|         info.attachmentCount = 1;
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|         info.pAttachments = &attachment;
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|         info.subpassCount = 1;
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|         info.pSubpasses = &subpass;
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|         err = vkCreateRenderPass(g_Device, &info, g_Allocator, &g_RenderPass);
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|         check_vk_result(err);
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|     }
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| 
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|     // Create The Image Views
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|     {
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|         VkImageViewCreateInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
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|         info.viewType = VK_IMAGE_VIEW_TYPE_2D;
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|         info.format = g_Format;
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|         info.components.r = VK_COMPONENT_SWIZZLE_R;
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|         info.components.g = VK_COMPONENT_SWIZZLE_G;
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|         info.components.b = VK_COMPONENT_SWIZZLE_B;
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|         info.components.a = VK_COMPONENT_SWIZZLE_A;
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|         info.subresourceRange = g_ImageRange;
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|         for (uint32_t i = 0; i<g_BackBufferCount; i++)
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|         {
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|             info.image = g_BackBuffer[i];
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|             err = vkCreateImageView(g_Device, &info, g_Allocator, &g_BackBufferView[i]);
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|             check_vk_result(err);
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|         }
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|     }
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| 
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|     // Create Framebuffer:
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|     {
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|         VkImageView attachment[1];
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|         VkFramebufferCreateInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
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|         info.renderPass = g_RenderPass;
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|         info.attachmentCount = 1;
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|         info.pAttachments = attachment;
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|         info.width = fb_width;
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|         info.height = fb_height;
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|         info.layers = 1;
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|         for (uint32_t i = 0; i<g_BackBufferCount; i++)
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|         {
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|             attachment[0] = g_BackBufferView[i];
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|             err = vkCreateFramebuffer(g_Device, &info, g_Allocator, &g_Framebuffer[i]);
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|             check_vk_result(err);
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|         }
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|     }
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| }
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| 
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| static void setup_vulkan(GLFWwindow* window)
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| {
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|     VkResult err;
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| 
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|     // Create Vulkan Instance
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|     {
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|         uint32_t glfw_extensions_count;
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|         const char** glfw_extensions = glfwGetRequiredInstanceExtensions(&glfw_extensions_count);
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|         VkInstanceCreateInfo create_info = {};
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|         create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
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|         create_info.enabledExtensionCount = glfw_extensions_count;
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|         create_info.ppEnabledExtensionNames = glfw_extensions;
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|         err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
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|         check_vk_result(err);
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|     }
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| 
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|     // Create Window Surface
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|     {
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|         err = glfwCreateWindowSurface(g_Instance, window, g_Allocator, &g_Surface);
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|         check_vk_result(err);
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|     }
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|     
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|     // Get GPU
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|     {
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|         uint32_t count = 1;
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|         err = vkEnumeratePhysicalDevices(g_Instance, &count, &g_Gpu);
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|         check_vk_result(err);
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|     }
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| 
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|     // Create Logical Device
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|     {
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|         int device_extension_count = 1;
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|         const char* device_extensions[] = {"VK_KHR_swapchain"};
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|         const uint32_t queue_index = 0;
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|         const uint32_t queue_count = 1;
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|         const float queue_priority[] = {1.0f};
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|         VkDeviceQueueCreateInfo queue_info[1] = {};
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|         queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
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|         queue_info[0].queueFamilyIndex = g_QueueFamily;
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|         queue_info[0].queueCount = queue_count;
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|         queue_info[0].pQueuePriorities = queue_priority;
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|         VkDeviceCreateInfo create_info = {};
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|         create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
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|         create_info.queueCreateInfoCount = sizeof(queue_info)/sizeof(queue_info[0]);
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|         create_info.pQueueCreateInfos = queue_info;
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|         create_info.enabledExtensionCount = device_extension_count;
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|         create_info.ppEnabledExtensionNames = device_extensions;
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|         err = vkCreateDevice(g_Gpu, &create_info, g_Allocator, &g_Device);
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|         check_vk_result(err);
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|         vkGetDeviceQueue(g_Device, g_QueueFamily, queue_index, &g_Queue);
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|     }
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| 
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|     // Create Framebuffers
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|     {
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|         int w, h;
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|         glfwGetFramebufferSize(window, &w, &h);
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|         resize_vulkan(window, w, h);
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|         glfwSetFramebufferSizeCallback(window, resize_vulkan);
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|     }
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| 
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|     // Create Command Buffers
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|     for (int i=0; i<IMGUI_VK_QUEUED_FRAMES; i++)
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|     {
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|         {
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|             VkCommandPoolCreateInfo info = {};
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|             info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
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|             info.flags = VK_COMMAND_POOL_CREATE_RESET_COMMAND_BUFFER_BIT;
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|             info.queueFamilyIndex = g_QueueFamily;
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|             err = vkCreateCommandPool(g_Device, &info, g_Allocator, &g_CommandPool[i]);
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|             check_vk_result(err);
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|         }
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|         {
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|             VkCommandBufferAllocateInfo info = {};
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|             info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
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|             info.commandPool = g_CommandPool[i];
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|             info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
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|             info.commandBufferCount = 1;
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|             err = vkAllocateCommandBuffers(g_Device, &info, &g_CommandBuffer[i]);
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|             check_vk_result(err);
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|         }
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|         {
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|             VkFenceCreateInfo info = {};
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|             info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
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|             info.flags = VK_FENCE_CREATE_SIGNALED_BIT;
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|             err = vkCreateFence(g_Device, &info, g_Allocator, &g_Fence[i]);
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|             check_vk_result(err);
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|         }
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|         {
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|             VkSemaphoreCreateInfo info = {};
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|             info.sType = VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO;
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|             err = vkCreateSemaphore(g_Device, &info, g_Allocator, &g_Semaphore[i]);
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|             check_vk_result(err);
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|         }
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|     }
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| 
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|     // Create Descriptor Pool
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|     {
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|         VkDescriptorPoolSize pool_size[11] = 
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|         {
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|             { VK_DESCRIPTOR_TYPE_SAMPLER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 1000 },
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|             { VK_DESCRIPTOR_TYPE_STORAGE_IMAGE, 1000 },
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|             { VK_DESCRIPTOR_TYPE_UNIFORM_TEXEL_BUFFER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_STORAGE_TEXEL_BUFFER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, 1000 },
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|             { VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC, 1000 },
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|             { VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC, 1000 },
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|             { VK_DESCRIPTOR_TYPE_INPUT_ATTACHMENT, 1000 }
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|         };
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|         VkDescriptorPoolCreateInfo pool_info = {};
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|         pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
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|         pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
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|         pool_info.maxSets = 1000 * 11;
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|         pool_info.poolSizeCount = 11;
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|         pool_info.pPoolSizes = pool_size;
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|         err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
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|         check_vk_result(err);
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|     }
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| }
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| 
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| static void cleanup_vulkan()
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| {
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|     vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
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|     for (int i = 0; i < IMGUI_VK_QUEUED_FRAMES; i++)
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|     {
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|         vkDestroyFence(g_Device, g_Fence[i], g_Allocator);
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|         vkFreeCommandBuffers(g_Device, g_CommandPool[i], 1, &g_CommandBuffer[i]);
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|         vkDestroyCommandPool(g_Device, g_CommandPool[i], g_Allocator);
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|         vkDestroySemaphore(g_Device, g_Semaphore[i], g_Allocator);
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|     }
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|     for (uint32_t i = 0; i < g_BackBufferCount; i++)
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|     {
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|         vkDestroyImageView(g_Device, g_BackBufferView[i], g_Allocator);
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|         vkDestroyFramebuffer(g_Device, g_Framebuffer[i], g_Allocator);
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|     }
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|     vkDestroyRenderPass(g_Device, g_RenderPass, g_Allocator);
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|     vkDestroySwapchainKHR(g_Device, g_Swapchain, g_Allocator);
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|     vkDestroySurfaceKHR(g_Instance, g_Surface, g_Allocator);
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|     vkDestroyDevice(g_Device, g_Allocator);
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|     vkDestroyInstance(g_Instance, g_Allocator);
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| }
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| 
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| static void frame_begin()
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| {
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|     VkResult err;
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|     while (true)
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|     {
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|         err = vkWaitForFences(g_Device, 1, &g_Fence[g_FrameIndex], VK_TRUE, 100);
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|         if (err == VK_SUCCESS) break;
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|         if (err == VK_TIMEOUT) continue;
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|         check_vk_result(err);
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|     }
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|     {
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|         err = vkAcquireNextImageKHR(g_Device, g_Swapchain, UINT64_MAX, g_Semaphore[g_FrameIndex], VK_NULL_HANDLE, &g_BackBufferIndex);
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|         check_vk_result(err);
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|     }
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|     {
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|         err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 0);
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|         check_vk_result(err);
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|         VkCommandBufferBeginInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
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|         info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
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|         err = vkBeginCommandBuffer(g_CommandBuffer[g_FrameIndex], &info);
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|         check_vk_result(err);
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|     }
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|     {
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|         VkRenderPassBeginInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
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|         info.renderPass = g_RenderPass;
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|         info.framebuffer = g_Framebuffer[g_BackBufferIndex];
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|         info.renderArea.extent.width = fb_width;
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|         info.renderArea.extent.height = fb_height;
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|         info.clearValueCount = 1;
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|         info.pClearValues = &g_ClearValue;
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|         vkCmdBeginRenderPass(g_CommandBuffer[g_FrameIndex], &info, VK_SUBPASS_CONTENTS_INLINE);
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|     }
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| }
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| 
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| static void frame_end()
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| {
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|     VkResult err;
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|     vkCmdEndRenderPass(g_CommandBuffer[g_FrameIndex]);
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|     {
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|         VkImageMemoryBarrier barrier = {};
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|         barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
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|         barrier.srcAccessMask = VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT;
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|         barrier.dstAccessMask = VK_ACCESS_MEMORY_READ_BIT;
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|         barrier.oldLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
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|         barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
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|         barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
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|         barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
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|         barrier.image = g_BackBuffer[g_BackBufferIndex];
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|         barrier.subresourceRange = g_ImageRange;
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|         vkCmdPipelineBarrier(g_CommandBuffer[g_FrameIndex], VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, NULL, 0, NULL, 1, &barrier);
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|     }
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|     {
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|         VkSubmitInfo info = {};
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|         info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
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|         info.waitSemaphoreCount = 1;
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|         info.pWaitSemaphores = &g_Semaphore[g_FrameIndex];
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|         info.commandBufferCount = 1;
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|         info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
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| 
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|         err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
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|         check_vk_result(err);
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|         err = vkResetFences(g_Device, 1, &g_Fence[g_FrameIndex]);
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|         check_vk_result(err);
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|         err = vkQueueSubmit(g_Queue, 1, &info, g_Fence[g_FrameIndex]);
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|         check_vk_result(err);
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|     }
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|     {
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|         VkResult res;
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|         VkSwapchainKHR swapchains[1] = {g_Swapchain};
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|         uint32_t indices[1] = {g_BackBufferIndex};
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|         VkPresentInfoKHR info = {};
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|         info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
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|         info.swapchainCount = 1;
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|         info.pSwapchains = swapchains;
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|         info.pImageIndices = indices;
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|         info.pResults = &res;
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|         err = vkQueuePresentKHR(g_Queue, &info);
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|         check_vk_result(err);
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|         check_vk_result(res);
 | |
|     }
 | |
|     g_FrameIndex = (g_FrameIndex) % IMGUI_VK_QUEUED_FRAMES;
 | |
| }
 | |
| 
 | |
| static void error_callback(int error, const char* description)
 | |
| {
 | |
|     fprintf(stderr, "Error %d: %s\n", error, description);
 | |
| }
 | |
| 
 | |
| int main(int, char**)
 | |
| {
 | |
|     // Setup window
 | |
|     glfwSetErrorCallback(error_callback);
 | |
|     if (!glfwInit())
 | |
|         return 1;
 | |
| 
 | |
|     glfwWindowHint(GLFW_CLIENT_API, GLFW_NO_API);
 | |
|     GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui Vulkan example", NULL, NULL);
 | |
| 
 | |
|     // Setup Vulkan
 | |
|     if (!glfwVulkanSupported())
 | |
|     {
 | |
|         printf("GLFW: Vulkan Not Supported\n");
 | |
|         return 1;
 | |
|     }
 | |
|     setup_vulkan(window);
 | |
| 
 | |
|     // Setup ImGui binding
 | |
|     ImGui_ImplGlfwVulkan_Init_Data init_data = {};
 | |
|     init_data.allocator = g_Allocator;
 | |
|     init_data.gpu = g_Gpu;
 | |
|     init_data.device = g_Device;
 | |
|     init_data.render_pass = g_RenderPass;
 | |
|     init_data.pipeline_cache = g_PipelineCache;
 | |
|     init_data.descriptor_pool = g_DescriptorPool;
 | |
|     init_data.check_vk_result = check_vk_result;
 | |
|     ImGui_ImplGlfwVulkan_Init(window, true, &init_data);
 | |
| 
 | |
|     // Load Fonts
 | |
|     // (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
 | |
|     //ImGuiIO& io = ImGui::GetIO();
 | |
|     //io.Fonts->AddFontDefault();
 | |
|     //io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
 | |
|     //io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
 | |
|     //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
 | |
|     //io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
 | |
|     //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
 | |
| 
 | |
|     // Upload Fonts
 | |
|     {
 | |
|         VkResult err;
 | |
|         err = vkResetCommandPool(g_Device, g_CommandPool[g_FrameIndex], 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(g_CommandBuffer[g_FrameIndex], &begin_info);
 | |
|         check_vk_result(err);
 | |
| 
 | |
|         ImGui_ImplGlfwVulkan_CreateFontsTexture(g_CommandBuffer[g_FrameIndex]);
 | |
| 
 | |
|         VkSubmitInfo end_info = {};
 | |
|         end_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
 | |
|         end_info.commandBufferCount = 1;
 | |
|         end_info.pCommandBuffers = &g_CommandBuffer[g_FrameIndex];
 | |
|         err = vkEndCommandBuffer(g_CommandBuffer[g_FrameIndex]);
 | |
|         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_ImplGlfwVulkan_InvalidateFontUploadObjects();
 | |
|     }
 | |
| 
 | |
|     bool show_test_window = true;
 | |
|     bool show_another_window = false;
 | |
|     ImVec4 clear_color = ImColor(114, 144, 154);
 | |
| 
 | |
|     // Main loop
 | |
|     while (!glfwWindowShouldClose(window))
 | |
|     {
 | |
|         glfwPollEvents();
 | |
|         ImGui_ImplGlfwVulkan_NewFrame();
 | |
| 
 | |
|         // 1. Show a simple window
 | |
|         // Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
 | |
|         {
 | |
|             static float f = 0.0f;
 | |
|             ImGui::Text("Hello, world!");
 | |
|             ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
 | |
|             ImGui::ColorEdit3("clear color", (float*)&clear_color);
 | |
|             if (ImGui::Button("Test Window")) show_test_window ^= 1;
 | |
|             if (ImGui::Button("Another Window")) show_another_window ^= 1;
 | |
|             ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
 | |
|         }
 | |
| 
 | |
|         // 2. Show another simple window, this time using an explicit Begin/End pair
 | |
|         if (show_another_window)
 | |
|         {
 | |
|             ImGui::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
 | |
|             ImGui::Begin("Another Window", &show_another_window);
 | |
|             ImGui::Text("Hello");
 | |
|             ImGui::End();
 | |
|         }
 | |
| 
 | |
|         // 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
 | |
|         if (show_test_window)
 | |
|         {
 | |
|             ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCond_FirstUseEver);
 | |
|             ImGui::ShowTestWindow(&show_test_window);
 | |
|         }
 | |
| 
 | |
|         g_ClearValue.color.float32[0] = clear_color.x;
 | |
|         g_ClearValue.color.float32[1] = clear_color.y;
 | |
|         g_ClearValue.color.float32[2] = clear_color.z;
 | |
|         g_ClearValue.color.float32[3] = clear_color.w;
 | |
| 
 | |
|         frame_begin();
 | |
|         ImGui_ImplGlfwVulkan_Render(g_CommandBuffer[g_FrameIndex]);
 | |
|         frame_end();
 | |
|     }
 | |
| 
 | |
|     // Cleanup
 | |
|     VkResult err = vkDeviceWaitIdle(g_Device);
 | |
|     check_vk_result(err);
 | |
|     ImGui_ImplGlfwVulkan_Shutdown();
 | |
|     cleanup_vulkan();
 | |
|     glfwTerminate();
 | |
| 
 | |
|     return 0;
 | |
| }
 | 
