mirror of
https://github.com/vulkano-rs/vulkano.git
synced 2024-11-25 08:14:20 +00:00
384 lines
13 KiB
Rust
384 lines
13 KiB
Rust
use std::{error::Error, sync::Arc};
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use vulkano::{
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command_buffer::{
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allocator::StandardCommandBufferAllocator, AutoCommandBufferBuilder, ClearAttachment,
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ClearRect, CommandBufferUsage, RenderPassBeginInfo,
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},
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device::{
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physical::PhysicalDeviceType, Device, DeviceCreateInfo, DeviceExtensions, Queue,
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QueueCreateInfo, QueueFlags,
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},
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image::{view::ImageView, Image, ImageUsage},
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instance::{Instance, InstanceCreateFlags, InstanceCreateInfo},
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render_pass::{Framebuffer, FramebufferCreateInfo, RenderPass},
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swapchain::{
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acquire_next_image, Surface, Swapchain, SwapchainCreateInfo, SwapchainPresentInfo,
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},
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sync::{self, GpuFuture},
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Validated, VulkanError, VulkanLibrary,
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};
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use winit::{
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application::ApplicationHandler,
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event::WindowEvent,
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event_loop::{ActiveEventLoop, EventLoop},
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window::{Window, WindowId},
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};
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fn main() -> Result<(), impl Error> {
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// The start of this example is exactly the same as `triangle`. You should read the `triangle`
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// example if you haven't done so yet.
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let event_loop = EventLoop::new().unwrap();
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let mut app = App::new(&event_loop);
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event_loop.run_app(&mut app)
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}
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struct App {
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instance: Arc<Instance>,
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device: Arc<Device>,
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queue: Arc<Queue>,
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command_buffer_allocator: Arc<StandardCommandBufferAllocator>,
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rcx: Option<RenderContext>,
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}
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struct RenderContext {
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window: Arc<Window>,
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swapchain: Arc<Swapchain>,
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render_pass: Arc<RenderPass>,
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framebuffers: Vec<Arc<Framebuffer>>,
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width: u32,
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height: u32,
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recreate_swapchain: bool,
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previous_frame_end: Option<Box<dyn GpuFuture>>,
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}
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impl App {
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fn new(event_loop: &EventLoop<()>) -> Self {
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let library = VulkanLibrary::new().unwrap();
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let required_extensions = Surface::required_extensions(event_loop).unwrap();
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let instance = Instance::new(
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library,
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InstanceCreateInfo {
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flags: InstanceCreateFlags::ENUMERATE_PORTABILITY,
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enabled_extensions: required_extensions,
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..Default::default()
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},
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)
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.unwrap();
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let device_extensions = DeviceExtensions {
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khr_swapchain: true,
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..DeviceExtensions::empty()
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};
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let (physical_device, queue_family_index) = instance
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.enumerate_physical_devices()
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.unwrap()
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.filter(|p| p.supported_extensions().contains(&device_extensions))
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.filter_map(|p| {
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p.queue_family_properties()
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.iter()
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.enumerate()
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.position(|(i, q)| {
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q.queue_flags.intersects(QueueFlags::GRAPHICS)
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&& p.presentation_support(i as u32, event_loop).unwrap()
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})
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.map(|i| (p, i as u32))
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})
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.min_by_key(|(p, _)| match p.properties().device_type {
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PhysicalDeviceType::DiscreteGpu => 0,
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PhysicalDeviceType::IntegratedGpu => 1,
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PhysicalDeviceType::VirtualGpu => 2,
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PhysicalDeviceType::Cpu => 3,
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PhysicalDeviceType::Other => 4,
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_ => 5,
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})
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.unwrap();
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println!(
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"Using device: {} (type: {:?})",
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physical_device.properties().device_name,
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physical_device.properties().device_type,
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);
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let (device, mut queues) = Device::new(
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physical_device,
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DeviceCreateInfo {
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enabled_extensions: device_extensions,
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queue_create_infos: vec![QueueCreateInfo {
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queue_family_index,
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..Default::default()
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}],
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..Default::default()
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},
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)
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.unwrap();
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let queue = queues.next().unwrap();
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let command_buffer_allocator = Arc::new(StandardCommandBufferAllocator::new(
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device.clone(),
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Default::default(),
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));
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App {
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instance,
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device,
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queue,
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command_buffer_allocator,
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rcx: None,
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}
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}
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}
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impl ApplicationHandler for App {
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fn resumed(&mut self, event_loop: &ActiveEventLoop) {
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let window = Arc::new(
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event_loop
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.create_window(Window::default_attributes())
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.unwrap(),
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);
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let surface = Surface::from_window(self.instance.clone(), window.clone()).unwrap();
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let window_size = window.inner_size();
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let (swapchain, images) = {
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let surface_capabilities = self
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.device
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.physical_device()
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.surface_capabilities(&surface, Default::default())
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.unwrap();
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let (image_format, _) = self
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.device
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.physical_device()
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.surface_formats(&surface, Default::default())
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.unwrap()[0];
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Swapchain::new(
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self.device.clone(),
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surface,
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SwapchainCreateInfo {
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min_image_count: surface_capabilities.min_image_count.max(2),
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image_format,
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image_extent: window_size.into(),
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image_usage: ImageUsage::COLOR_ATTACHMENT,
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composite_alpha: surface_capabilities
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.supported_composite_alpha
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.into_iter()
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.next()
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.unwrap(),
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..Default::default()
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},
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)
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.unwrap()
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};
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let render_pass = vulkano::single_pass_renderpass!(
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self.device.clone(),
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attachments: {
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color: {
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format: swapchain.image_format(),
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samples: 1,
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load_op: Clear,
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store_op: Store,
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},
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},
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pass: {
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color: [color],
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depth_stencil: {},
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},
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)
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.unwrap();
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let framebuffers = window_size_dependent_setup(&images, &render_pass);
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let [width, height] = window_size.into();
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let previous_frame_end = Some(sync::now(self.device.clone()).boxed());
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self.rcx = Some(RenderContext {
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window,
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swapchain,
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render_pass,
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framebuffers,
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width,
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height,
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recreate_swapchain: false,
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previous_frame_end,
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});
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}
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fn window_event(
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&mut self,
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event_loop: &ActiveEventLoop,
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_window_id: WindowId,
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event: WindowEvent,
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) {
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let rcx = self.rcx.as_mut().unwrap();
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match event {
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WindowEvent::CloseRequested => {
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event_loop.exit();
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}
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WindowEvent::Resized(_) => {
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rcx.recreate_swapchain = true;
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}
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WindowEvent::RedrawRequested => {
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let window_size = rcx.window.inner_size();
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if window_size.width == 0 || window_size.height == 0 {
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return;
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}
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rcx.previous_frame_end.as_mut().unwrap().cleanup_finished();
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if rcx.recreate_swapchain {
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let (new_swapchain, new_images) = rcx
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.swapchain
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.recreate(SwapchainCreateInfo {
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image_extent: window_size.into(),
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..rcx.swapchain.create_info()
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})
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.expect("failed to recreate swapchain");
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rcx.swapchain = new_swapchain;
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rcx.framebuffers = window_size_dependent_setup(&new_images, &rcx.render_pass);
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[rcx.width, rcx.height] = window_size.into();
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rcx.recreate_swapchain = false;
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}
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let (image_index, suboptimal, acquire_future) = match acquire_next_image(
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rcx.swapchain.clone(),
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None,
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)
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.map_err(Validated::unwrap)
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{
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Ok(r) => r,
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Err(VulkanError::OutOfDate) => {
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rcx.recreate_swapchain = true;
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return;
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}
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Err(e) => panic!("failed to acquire next image: {e}"),
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};
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if suboptimal {
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rcx.recreate_swapchain = true;
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}
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let mut builder = AutoCommandBufferBuilder::primary(
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self.command_buffer_allocator.clone(),
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self.queue.queue_family_index(),
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CommandBufferUsage::OneTimeSubmit,
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)
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.unwrap();
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builder
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.begin_render_pass(
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RenderPassBeginInfo {
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clear_values: vec![Some([0.0, 0.0, 1.0, 1.0].into())],
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..RenderPassBeginInfo::framebuffer(
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rcx.framebuffers[image_index as usize].clone(),
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)
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},
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Default::default(),
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)
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.unwrap()
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// Clear attachments with clear values and rects information. All the rects
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// will be cleared by the same value. Note that the ClearRect offsets and
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// extents are not affected by the viewport, they are directly applied to the
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// rendering image.
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.clear_attachments(
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[ClearAttachment::Color {
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color_attachment: 0,
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clear_value: [1.0, 0.0, 0.0, 1.0].into(),
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}]
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.into_iter()
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.collect(),
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[
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// Fixed offset and extent.
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ClearRect {
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offset: [0, 0],
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extent: [100, 100],
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array_layers: 0..1,
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},
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// Fixed offset, relative extent.
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ClearRect {
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offset: [100, 150],
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extent: [rcx.width / 4, rcx.height / 4],
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array_layers: 0..1,
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},
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// Relative offset and extent.
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ClearRect {
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offset: [rcx.width / 2, rcx.height / 2],
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extent: [rcx.width / 3, rcx.height / 5],
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array_layers: 0..1,
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},
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]
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.into_iter()
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.collect(),
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)
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.unwrap()
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.end_render_pass(Default::default())
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.unwrap();
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let command_buffer = builder.build().unwrap();
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let future = rcx
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.previous_frame_end
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.take()
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.unwrap()
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.join(acquire_future)
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.then_execute(self.queue.clone(), command_buffer)
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.unwrap()
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.then_swapchain_present(
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self.queue.clone(),
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SwapchainPresentInfo::swapchain_image_index(
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rcx.swapchain.clone(),
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image_index,
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),
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)
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.then_signal_fence_and_flush();
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match future.map_err(Validated::unwrap) {
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Ok(future) => {
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rcx.previous_frame_end = Some(future.boxed());
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}
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Err(VulkanError::OutOfDate) => {
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rcx.recreate_swapchain = true;
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rcx.previous_frame_end = Some(sync::now(self.device.clone()).boxed());
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}
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Err(e) => {
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println!("failed to flush future: {e}");
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rcx.previous_frame_end = Some(sync::now(self.device.clone()).boxed());
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}
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}
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}
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_ => {}
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}
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}
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fn about_to_wait(&mut self, _event_loop: &ActiveEventLoop) {
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let rcx = self.rcx.as_mut().unwrap();
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rcx.window.request_redraw();
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}
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}
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/// This function is called once during initialization, then again whenever the window is resized.
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fn window_size_dependent_setup(
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images: &[Arc<Image>],
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render_pass: &Arc<RenderPass>,
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) -> Vec<Arc<Framebuffer>> {
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images
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.iter()
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.map(|image| {
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let view = ImageView::new_default(image.clone()).unwrap();
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Framebuffer::new(
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render_pass.clone(),
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FramebufferCreateInfo {
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attachments: vec![view],
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..Default::default()
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},
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)
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.unwrap()
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})
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.collect::<Vec<_>>()
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}
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