411 lines
14 KiB
Odin
411 lines
14 KiB
Odin
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package impl_glfw_vulkan
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import "core:fmt"
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import "core:strings"
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import "core:bytes"
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import "base:runtime"
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import "vendor:glfw"
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import vk "vendor:vulkan"
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import imgui ".."
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import imgui_glfw "../glfw"
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import imgui_vk "../vulkan"
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vk_allocator: ^vk.AllocationCallbacks = nil
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vk_instance: vk.Instance = nil
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vk_physical_device: vk.PhysicalDevice = nil
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vk_device: vk.Device = nil
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vk_queue_family: u32 = max(u32)
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vk_queue: vk.Queue = nil
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vk_pipeline_cache: vk.PipelineCache = 0
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vk_descriptor_pool: vk.DescriptorPool = 0
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imgui_vk_main_window_data: imgui_vk.Window
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imgui_vk_min_image_count: u32 = 2
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imgui_vk_swap_chain_rebuild: b32 = false
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main :: proc() { run() }
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vk_select_physical_device :: proc() -> vk.PhysicalDevice {
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vk_res: vk.Result
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gpu_count: u32 = 0
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vk_res = vk.EnumeratePhysicalDevices(vk_instance, &gpu_count, nil)
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if !vk_res_ok(vk_res) do return nil
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if gpu_count <= 0 {
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fmt.eprintln("no gpus found")
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return nil
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}
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gpus := make([dynamic]vk.PhysicalDevice, gpu_count)
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vk_res = vk.EnumeratePhysicalDevices(vk_instance, &gpu_count, raw_data(gpus))
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if !vk_res_ok(vk_res) do return nil
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for gpu, i in gpus {
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properties: vk.PhysicalDeviceProperties = {}
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vk.GetPhysicalDeviceProperties(gpu, &properties)
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if properties.deviceType == .DISCRETE_GPU do return gpu
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}
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return gpus[0]
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}
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is_ext_available :: proc(properties: [] vk.ExtensionProperties, extension: cstring)-> b32 {
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for &property in properties {
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if cstring(&property.extensionName[0]) == extension do return true
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}
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return false
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}
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vk_res_ok :: proc(res: vk.Result) -> b32 {
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if res >= .SUCCESS {
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if res != .SUCCESS do fmt.eprintln("[VULKAN Info]", res)
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return true
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}
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fmt.eprintln("[VULKAN Error]", res)
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return false
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}
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glfw_error_cb :: proc "c" (error: i32, desc: cstring) {
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context = runtime.default_context()
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fmt.eprintln("[GLFW Error]", error, desc)
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}
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run :: proc() -> b32 {
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glfw.SetErrorCallback(glfw_error_cb)
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glfw.Init() or_return
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glfw.WindowHint(glfw.CLIENT_API, glfw.NO_API)
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window := glfw.CreateWindow(
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1280,
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720,
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"Test",
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nil,
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nil
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)
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glfw.VulkanSupported() or_return
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vk.load_proc_addresses(glfw.GetInstanceProcAddress(nil, "vkGetInstanceProcAddr"))
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vk_res: vk.Result
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extensions := make([dynamic]cstring)
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defer delete(extensions)
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for ext in glfw.GetRequiredInstanceExtensions() do append(&extensions, ext)
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{
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create_info: vk.InstanceCreateInfo = {}
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create_info.sType = .INSTANCE_CREATE_INFO
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properties_count: u32
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vk_res = vk.EnumerateInstanceExtensionProperties(nil, &properties_count, nil)
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vk_res_ok(vk_res) or_return
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properties := make([dynamic]vk.ExtensionProperties, properties_count)
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defer delete(properties)
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vk_res = vk.EnumerateInstanceExtensionProperties(nil, &properties_count, raw_data(properties))
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vk_res_ok(vk_res) or_return
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ext: cstring
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ext = vk.KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME
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if is_ext_available(properties[:], ext) do append(&extensions, ext)
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ext = vk.KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME
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if is_ext_available(properties[:], ext) {
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append(&extensions, ext)
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create_info.flags = create_info.flags + {.ENUMERATE_PORTABILITY_KHR}
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}
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create_info.enabledExtensionCount = cast(u32)len(extensions)
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create_info.ppEnabledExtensionNames = raw_data(extensions)
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vk_res = vk.CreateInstance(&create_info, vk_allocator, &vk_instance)
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vk_res_ok(vk_res) or_return
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}
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vk.load_proc_addresses(vk_instance)
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vk_physical_device = vk_select_physical_device()
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{
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count: u32
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vk.GetPhysicalDeviceQueueFamilyProperties(vk_physical_device, &count, nil)
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queues: [dynamic]vk.QueueFamilyProperties = make([dynamic]vk.QueueFamilyProperties, count)
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defer delete(queues)
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vk.GetPhysicalDeviceQueueFamilyProperties(vk_physical_device, &count, raw_data(queues))
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for q_item, i in queues {
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if .GRAPHICS in q_item.queueFlags {
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vk_queue_family = u32(i)
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break
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}
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}
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if vk_queue_family == max(u32) do return false
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}
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{
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device_extensions:= make([dynamic] cstring)
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defer delete(device_extensions)
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append(&device_extensions, "VK_KHR_swapchain")
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properties_count: u32
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vk.EnumerateDeviceExtensionProperties(vk_physical_device, nil, &properties_count, nil)
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properties := make([dynamic]vk.ExtensionProperties, properties_count)
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defer delete(properties)
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vk.EnumerateDeviceExtensionProperties(vk_physical_device, nil, &properties_count, raw_data(properties))
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queue_priority: []f32 = { 1.0 }
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queue_info: [1]vk.DeviceQueueCreateInfo = {}
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queue_info[0].sType = .DEVICE_QUEUE_CREATE_INFO
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queue_info[0].queueFamilyIndex = vk_queue_family
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queue_info[0].queueCount = 1
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queue_info[0].pQueuePriorities = raw_data(queue_priority)
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create_info: vk.DeviceCreateInfo = {}
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create_info.sType = .DEVICE_CREATE_INFO
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create_info.queueCreateInfoCount = len(queue_info)
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create_info.pQueueCreateInfos = raw_data(queue_info[:])
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create_info.enabledExtensionCount = u32(len(device_extensions))
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create_info.ppEnabledExtensionNames = raw_data(device_extensions)
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vk_res = vk.CreateDevice(vk_physical_device, &create_info, vk_allocator, &vk_device)
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vk_res_ok(vk_res) or_return
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vk.GetDeviceQueue(vk_device, vk_queue_family, 0, &vk_queue)
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}
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vk.load_proc_addresses(vk_device)
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{
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pool_sizes: []vk.DescriptorPoolSize = {{.COMBINED_IMAGE_SAMPLER, 1}}
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pool_info: vk.DescriptorPoolCreateInfo = {}
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pool_info.sType = .DESCRIPTOR_POOL_CREATE_INFO
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pool_info.flags = {.FREE_DESCRIPTOR_SET}
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pool_info.maxSets = 1
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pool_info.poolSizeCount = u32(len(pool_sizes))
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pool_info.pPoolSizes = raw_data(pool_sizes)
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vk_res = vk.CreateDescriptorPool(vk_device, &pool_info, vk_allocator, &vk_descriptor_pool)
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vk_res_ok(vk_res) or_return
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}
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surface: vk.SurfaceKHR
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vk_res = glfw.CreateWindowSurface(vk_instance, window, vk_allocator, &surface)
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vk_res_ok(vk_res) or_return
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imgui_window: ^imgui_vk.Window = &imgui_vk_main_window_data
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imgui_window.Surface = surface
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response: b32
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vk_res = vk.GetPhysicalDeviceSurfaceSupportKHR(vk_physical_device, vk_queue_family, surface, &response)
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vk_res_ok(vk_res) or_return
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if !response {
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fmt.eprintln("GetPhysicalDeviceSurfaceSupportKHR failed")
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return false
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}
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req_surface_img_fmt: [] vk.Format = {.B8G8R8A8_UNORM, .R8G8B8A8_UNORM, .B8G8R8_UNORM, .R8G8B8_UNORM}
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req_surface_color_space: vk.ColorSpaceKHR = .SRGB_NONLINEAR
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imgui_window.SurfaceFormat = imgui_vk.SelectSurfaceFormat(vk_physical_device, surface, raw_data(req_surface_img_fmt), i32(len(req_surface_img_fmt)), req_surface_color_space)
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present_modes: [] vk.PresentModeKHR = {.MAILBOX, .IMMEDIATE, .FIFO}
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imgui_window.PresentMode = imgui_vk.SelectPresentMode(vk_physical_device, surface, raw_data(present_modes), i32(len(present_modes)))
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assert(imgui_vk_min_image_count >= 2)
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fb_w, fb_h := glfw.GetFramebufferSize(window)
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imgui_window.ClearEnable = true // This is enabled by default in Cpp; required for the attachment to clear
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imgui_vk.CreateOrResizeWindow(vk_instance, vk_physical_device, vk_device, imgui_window, vk_queue_family, vk_allocator, fb_w, fb_h, imgui_vk_min_image_count)
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imgui.CreateContext(nil)
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io := imgui.GetIO()
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io.ConfigFlags |= imgui.ConfigFlags.NavEnableKeyboard
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io.ConfigFlags |= imgui.ConfigFlags.NavEnableGamepad
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imgui.StyleColorsDark(nil)
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imgui_glfw.InitForVulkan(window, true)
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init_info: imgui_vk.InitInfo = {}
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init_info.Instance = vk_instance
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init_info.PhysicalDevice = vk_physical_device
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init_info.Device = vk_device
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init_info.QueueFamily = vk_queue_family
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init_info.Queue = vk_queue
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init_info.PipelineCache = vk_pipeline_cache
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init_info.DescriptorPool = vk_descriptor_pool
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init_info.RenderPass = imgui_window.RenderPass
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init_info.Subpass = 0
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init_info.MinImageCount = imgui_vk_min_image_count
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init_info.ImageCount = imgui_window.ImageCount
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init_info.MSAASamples = {._1}
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init_info.Allocator = vk_allocator
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check_vk_res :: proc(res: vk.Result) { vk_res_ok(res) }
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init_info.CheckVkResultFn = check_vk_res
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imgui_vk.Init(&init_info)
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clear_color: [4]f32 = {0.45, 0.55, 0.60, 1.00}
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_cc := clear_color.xyz
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show_demo_window: b8 = true
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show_another_window: b8 = false
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_f: f32 = 0
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_counter: i32 = 0
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for !glfw.WindowShouldClose(window) {
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glfw.PollEvents()
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fb_w, fb_h = glfw.GetFramebufferSize(window)
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if fb_w > 0 && fb_h > 0 && (imgui_vk_swap_chain_rebuild || imgui_vk_main_window_data.Width != fb_w || imgui_vk_main_window_data.Height != fb_h) {
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imgui_vk.SetMinImageCount(imgui_vk_min_image_count)
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imgui_vk.CreateOrResizeWindow(vk_instance, vk_physical_device, vk_device, &imgui_vk_main_window_data, vk_queue_family, vk_allocator, fb_w, fb_h, imgui_vk_min_image_count)
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imgui_vk_main_window_data.FrameIndex = 0
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imgui_vk_swap_chain_rebuild = false
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}
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if glfw.GetWindowAttrib(window, glfw.ICONIFIED) != 0 {
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imgui_glfw.Sleep(10)
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continue
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}
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imgui_vk.NewFrame()
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imgui_glfw.NewFrame()
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imgui.NewFrame()
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if show_demo_window do imgui.ShowDemoWindow(&show_demo_window)
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{
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imgui.Begin("Hello, world!") // Create a window called "Hello, world!" and append into it.
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imgui.Text("This is some useful text.") // Display some text (you can use a format strings too)
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imgui.Checkbox("Demo Window", &show_demo_window) // Edit bools storing our window open/close state
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imgui.Checkbox("Another Window", &show_another_window)
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imgui.SliderFloat("float", &_f, 0.0, 1.0) // Edit 1 float using a slider from 0.0f to 1.0f
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_cc = clear_color.xyz
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imgui.ColorEdit3("clear color", &_cc, {}) // Edit 3 floats representing a color
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imgui.SliderFloat3("clear color", &_cc, 0, 1)
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clear_color.xyz = _cc
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if imgui.Button("Button") do _counter += 1 // Buttons return true when clicked (most widgets return true when edited/activated)
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imgui.SameLine()
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imgui.Text("counter = %d", _counter)
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imgui.Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0 / io.Framerate, io.Framerate)
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imgui.End()
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}
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// 3. Show another simple window.
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if show_another_window {
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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)
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imgui.Text("Hello from another window!")
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if imgui.Button("Close Me") do show_another_window = false
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imgui.End()
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}
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imgui.Render()
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draw_data: ^imgui.ImDrawData = imgui.GetDrawData()
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is_minimized := draw_data.DisplaySize.x <= 0 || draw_data.DisplaySize.y <= 0
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if !is_minimized {
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imgui_window.ClearValue.color.float32.r = clear_color.r * clear_color.a
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imgui_window.ClearValue.color.float32.g = clear_color.g * clear_color.a
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imgui_window.ClearValue.color.float32.b = clear_color.b * clear_color.a
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imgui_window.ClearValue.color.float32.a = clear_color.a
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frame_render(imgui_window, draw_data)
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frame_present(imgui_window)
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}
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}
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vk_res = vk.DeviceWaitIdle(vk_device)
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vk_res_ok(vk_res) or_return
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imgui_vk.Shutdown()
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imgui_glfw.Shutdown()
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imgui.DestroyContext(nil)
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imgui_vk.DestroyWindow(vk_instance, vk_device, &imgui_vk_main_window_data, vk_allocator)
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vk.DestroyDescriptorPool(vk_device, vk_descriptor_pool, vk_allocator)
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vk.DestroyDevice(vk_device, vk_allocator)
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vk.DestroyInstance(vk_instance, vk_allocator)
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glfw.DestroyWindow(window)
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glfw.Terminate()
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return true
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}
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frame_render:: proc(imgui_vk_window: ^imgui_vk.Window, draw_data: ^imgui.ImDrawData) {
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vk_res: vk.Result
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|
|
img_acquired_semaphore: vk.Semaphore = imgui_vk_window.FrameSemaphores[imgui_vk_window.SemaphoreIndex].ImageAcquiredSemaphore
|
||
|
|
render_complete_semaphore: vk.Semaphore = imgui_vk_window.FrameSemaphores[imgui_vk_window.SemaphoreIndex].RenderCompleteSemaphore
|
||
|
|
vk_res = vk.AcquireNextImageKHR(vk_device, imgui_vk_window.Swapchain, max(u64), img_acquired_semaphore, 0, &imgui_vk_window.FrameIndex)
|
||
|
|
|
||
|
|
if vk_res == .TIMEOUT do return
|
||
|
|
if vk_res == .ERROR_OUT_OF_DATE_KHR || vk_res == .SUBOPTIMAL_KHR {
|
||
|
|
imgui_vk_swap_chain_rebuild = true
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
|
||
|
|
fd: imgui_vk.Frame = imgui_vk_window.Frames[imgui_vk_window.FrameIndex]
|
||
|
|
{
|
||
|
|
|
||
|
|
vk_res = vk.WaitForFences(vk_device, 1, &fd.Fence, true, max(u64))
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
|
||
|
|
vk_res = vk.ResetFences(vk_device, 1, &fd.Fence)
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
}
|
||
|
|
{
|
||
|
|
vk_res = vk.ResetCommandPool(vk_device, fd.CommandPool, {})
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
|
||
|
|
info: vk.CommandBufferBeginInfo = {}
|
||
|
|
info.sType = .COMMAND_BUFFER_BEGIN_INFO
|
||
|
|
info.flags = {.ONE_TIME_SUBMIT}
|
||
|
|
vk_res = vk.BeginCommandBuffer(fd.CommandBuffer, &info)
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
}
|
||
|
|
{
|
||
|
|
info: vk.RenderPassBeginInfo = {}
|
||
|
|
info.sType = .RENDER_PASS_BEGIN_INFO
|
||
|
|
info.renderPass = imgui_vk_window.RenderPass
|
||
|
|
info.framebuffer = fd.Framebuffer
|
||
|
|
info.renderArea.extent.width = u32(imgui_vk_window.Width)
|
||
|
|
info.renderArea.extent.height = u32(imgui_vk_window.Height)
|
||
|
|
info.clearValueCount = 1
|
||
|
|
info.pClearValues = &imgui_vk_window.ClearValue
|
||
|
|
vk.CmdBeginRenderPass(fd.CommandBuffer, &info, .INLINE)
|
||
|
|
}
|
||
|
|
imgui_vk.RenderDrawData(draw_data, fd.CommandBuffer)
|
||
|
|
vk.CmdEndRenderPass(fd.CommandBuffer)
|
||
|
|
{
|
||
|
|
wait_stage: vk.PipelineStageFlags = {.COLOR_ATTACHMENT_OUTPUT}
|
||
|
|
info: vk.SubmitInfo = {}
|
||
|
|
info.sType = .SUBMIT_INFO
|
||
|
|
info.waitSemaphoreCount = 1
|
||
|
|
info.pWaitSemaphores = &img_acquired_semaphore
|
||
|
|
info.pWaitDstStageMask = &wait_stage
|
||
|
|
info.commandBufferCount = 1
|
||
|
|
info.pCommandBuffers = &fd.CommandBuffer
|
||
|
|
info.signalSemaphoreCount = 1
|
||
|
|
info.pSignalSemaphores = &render_complete_semaphore
|
||
|
|
|
||
|
|
vk_res = vk.EndCommandBuffer(fd.CommandBuffer)
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
vk_res = vk.QueueSubmit(vk_queue, 1, &info, fd.Fence)
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
frame_present:: proc(igvk_window: ^imgui_vk.Window) {
|
||
|
|
vk_res: vk.Result
|
||
|
|
if imgui_vk_swap_chain_rebuild do return
|
||
|
|
render_complete_semaphore := igvk_window.FrameSemaphores[igvk_window.SemaphoreIndex].RenderCompleteSemaphore
|
||
|
|
info: vk.PresentInfoKHR = {}
|
||
|
|
info.sType = .PRESENT_INFO_KHR
|
||
|
|
info.waitSemaphoreCount = 1
|
||
|
|
info.pWaitSemaphores = &render_complete_semaphore
|
||
|
|
info.swapchainCount = 1
|
||
|
|
info.pSwapchains = &igvk_window.Swapchain
|
||
|
|
info.pImageIndices = &igvk_window.FrameIndex
|
||
|
|
vk_res = vk.QueuePresentKHR(vk_queue, &info)
|
||
|
|
if vk_res == .ERROR_OUT_OF_DATE_KHR || vk_res == .SUBOPTIMAL_KHR {
|
||
|
|
imgui_vk_swap_chain_rebuild = true
|
||
|
|
return
|
||
|
|
}
|
||
|
|
if !vk_res_ok(vk_res) do return
|
||
|
|
igvk_window.SemaphoreIndex = (igvk_window.SemaphoreIndex + 1) % igvk_window.SemaphoreCount
|
||
|
|
}
|