118 lines
3.3 KiB
Rust
118 lines
3.3 KiB
Rust
mod functions;
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use functions::{create_instance, create_logical_device, pick_physical_device};
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use crate::VALIDATION_ENABLED;
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use ::anyhow::{anyhow, Result};
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use ::log::*;
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use ::thiserror::Error;
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use ::vulkanalia::loader::{LibloadingLoader, LIBRARY};
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use ::vulkanalia::prelude::v1_0::*;
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use ::vulkanalia::vk::ExtDebugUtilsExtension;
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use ::vulkanalia::vk::KhrSurfaceExtension;
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use ::vulkanalia::window as vk_window;
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use ::winit::window::Window;
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/// Our Vulkan app.
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#[derive(Clone, Debug)]
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pub struct App {
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entry: Entry,
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instance: Instance,
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data: AppData,
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device: Device,
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}
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impl App {
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/// Creates our Vulkan app.
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pub unsafe fn create(window: &Window) -> Result<Self> {
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let loader = LibloadingLoader::new(LIBRARY)?;
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let entry = Entry::new(loader).map_err(|b| anyhow!("{}", b))?;
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let mut data = AppData::default();
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let instance = create_instance(window, &entry, &mut data)?;
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data.surface = vk_window::create_surface(&instance, window)?;
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pick_physical_device(&instance, &mut data)?;
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let device = create_logical_device(&instance, &mut data)?;
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Ok(Self {
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entry,
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instance,
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data,
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device,
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})
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}
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/// Renders a frame for our Vulkan app.
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pub unsafe fn render(&mut self, window: &Window) -> Result<()> {
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Ok(())
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}
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/// Destroys our Vulkan app.
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pub unsafe fn destroy(&mut self) {
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self.device.destroy_device(None);
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if VALIDATION_ENABLED {
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self.instance
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.destroy_debug_utils_messenger_ext(self.data.messenger, None);
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}
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self.instance.destroy_surface_khr(self.data.surface, None);
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self.instance.destroy_instance(None);
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}
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}
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/// The Vulkan handles and associated properties used by our Vulkan app.
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#[derive(Clone, Debug, Default)]
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pub struct AppData {
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surface: vk::SurfaceKHR,
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// Debug
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messenger: vk::DebugUtilsMessengerEXT,
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// Physical Device / Logical Device
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physical_device: vk::PhysicalDevice,
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graphics_queue: vk::Queue,
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present_queue: vk::Queue,
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}
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#[derive(Debug, Error)]
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#[error("Missing {0}.")]
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pub struct SuitabilityError(pub &'static str);
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#[derive(Copy, Clone, Debug)]
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pub(crate) struct QueueFamilyIndicies {
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graphics: u32,
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present: u32,
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}
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impl QueueFamilyIndicies {
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unsafe fn get(
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instance: &Instance,
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data: &AppData,
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physical_device: vk::PhysicalDevice,
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) -> Result<Self> {
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let properties = instance.get_physical_device_queue_family_properties(physical_device);
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let graphics = properties
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.iter()
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.position(|p| p.queue_flags.contains(vk::QueueFlags::GRAPHICS))
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.map(|i| i as u32);
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let mut present = None;
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for (index, properties) in properties.iter().enumerate() {
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if instance.get_physical_device_surface_support_khr(
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physical_device,
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index as u32,
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data.surface,
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)? {
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present = Some(index as u32);
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break;
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}
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}
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if let (Some(graphics), Some(present)) = (graphics, present) {
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Ok(Self { graphics, present })
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} else {
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Err(anyhow!(SuitabilityError(
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"Missing required queue families."
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)))
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}
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}
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}
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