351 lines
11 KiB
Rust
351 lines
11 KiB
Rust
mod data;
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mod functions;
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use data::AppData;
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use crate::VALIDATION_ENABLED;
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use ::anyhow::{anyhow, Result};
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use ::lazy_static::lazy_static;
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use ::log::*;
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use ::nalgebra_glm as glm;
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use ::std::mem::size_of;
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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, KhrSurfaceExtension, KhrSwapchainExtension};
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use ::vulkanalia::window as vk_window;
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use ::vulkanalia::Version;
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use ::winit::window::Window;
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/// The name of the validation layers.
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pub const VALIDATION_LAYER: vk::ExtensionName =
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vk::ExtensionName::from_bytes(b"VK_LAYER_KHRONOS_validation");
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/// The Vulkan SDK version that started requiring the portability subset extension for macOS.
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pub const PORTABILITY_MACOS_VERSION: Version = Version::new(1, 3, 216);
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/// The required device extensions
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pub const DEVICE_EXTENSIONS: &[vk::ExtensionName] = &[vk::KHR_SWAPCHAIN_EXTENSION.name];
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/// The maximum number of frames that can be processed concurrently.
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pub const MAX_FRAMES_IN_FLIGHT: usize = 2;
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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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/// This value needs to stick around, but we don't use it directly
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_entry: Entry,
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instance: Instance,
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data: AppData,
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pub device: Device,
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frame: usize,
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pub resized: bool,
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}
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impl App {
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/// Creates our Vulkan app.
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///
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/// # Safety
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/// Here be Dragons
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pub fn create(window: &Window) -> Result<Self> {
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unsafe {
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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 = data.create_instance(window, &entry)?;
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data.surface = vk_window::create_surface(&instance, window)?;
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data.pick_physical_device(&instance)?;
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let device = data.create_logical_device(&instance)?;
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data.create_swapchain(window, &instance, &device)?;
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data.create_swapchain_image_views(&device)?;
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data.create_render_pass(&instance, &device)?;
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data.create_pipeline(&device)?;
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data.create_framebuffers(&device)?;
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data.create_command_pool(&instance, &device)?;
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data.create_vertex_buffer(&instance, &device)?;
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data.create_command_buffers(&device)?;
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data.create_sync_objects(&device)?;
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Ok(Self {
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_entry: entry,
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instance,
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data,
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device,
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frame: 0,
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resized: false,
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})
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}
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}
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/// Destroys our Vulkan app, in reverse order of creation
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///
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/// # Safety
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/// Here be Dragons
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pub unsafe fn destroy(&mut self) {
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self.destroy_swapchain();
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self.device.destroy_buffer(self.data.vertex_buffer, None);
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self.device
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.free_memory(self.data.vertex_buffer_memory, None);
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self.data
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.in_flight_fences
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.iter()
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.for_each(|f| self.device.destroy_fence(*f, None));
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self.data
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.render_finished_semaphores
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.iter()
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.for_each(|s| self.device.destroy_semaphore(*s, None));
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self.data
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.image_available_semaphores
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.iter()
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.for_each(|s| self.device.destroy_semaphore(*s, None));
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self.device
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.destroy_command_pool(self.data.command_pool, None);
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self.device.destroy_device(None);
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self.instance.destroy_surface_khr(self.data.surface, 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_instance(None);
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}
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/// Cleanup the swapchain and related objects
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///
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/// # Safety
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/// Here be Dragons
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unsafe fn destroy_swapchain(&mut self) {
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self.data
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.framebuffers
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.iter()
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.for_each(|f| self.device.destroy_framebuffer(*f, None));
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self.device
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.free_command_buffers(self.data.command_pool, &self.data.command_buffers);
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self.device.destroy_pipeline(self.data.pipeline, None);
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self.device
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.destroy_pipeline_layout(self.data.pipeline_layout, None);
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self.device.destroy_render_pass(self.data.render_pass, None);
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self.data
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.swapchain_image_views
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.iter()
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.for_each(|v| self.device.destroy_image_view(*v, None));
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self.device.destroy_swapchain_khr(self.data.swapchain, None);
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}
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/// Renders a frame for our Vulkan app.
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///
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/// # Safety
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/// Here be Dragons
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pub fn render(&mut self, window: &Window) -> Result<()> {
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unsafe {
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let in_flight_fence = self.data.in_flight_fences[self.frame];
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self.device
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.wait_for_fences(&[in_flight_fence], true, u64::max_value())?;
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let result = self.device.acquire_next_image_khr(
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self.data.swapchain,
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u64::max_value(),
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self.data.image_available_semaphores[self.frame],
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vk::Fence::null(),
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);
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let image_index = match result {
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Ok((image_index, _)) => image_index as usize,
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Err(vk::ErrorCode::OUT_OF_DATE_KHR) => return self.recreate_swapchain(window),
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Err(e) => return Err(anyhow!(e)),
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};
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let image_in_flight = self.data.images_in_flight[image_index];
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if !image_in_flight.is_null() {
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self.device
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.wait_for_fences(&[image_in_flight], true, u64::max_value())?;
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}
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self.data.images_in_flight[image_index] = in_flight_fence;
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let wait_semaphores = &[self.data.image_available_semaphores[self.frame]];
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let wait_stages = &[vk::PipelineStageFlags::COLOR_ATTACHMENT_OUTPUT];
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let command_buffers = &[self.data.command_buffers[image_index]];
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let signal_semaphores = &[self.data.render_finished_semaphores[self.frame]];
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let submit_info = vk::SubmitInfo::builder()
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.wait_semaphores(wait_semaphores)
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.wait_dst_stage_mask(wait_stages)
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.command_buffers(command_buffers)
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.signal_semaphores(signal_semaphores);
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self.device.reset_fences(&[in_flight_fence])?;
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self.device
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.queue_submit(self.data.graphics_queue, &[submit_info], in_flight_fence)?;
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let swapchains = &[self.data.swapchain];
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let image_indices = &[image_index as u32];
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let present_info = vk::PresentInfoKHR::builder()
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.wait_semaphores(signal_semaphores)
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.swapchains(swapchains)
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.image_indices(image_indices);
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let result = self
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.device
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.queue_present_khr(self.data.present_queue, &present_info);
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let changed = result == Ok(vk::SuccessCode::SUBOPTIMAL_KHR)
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|| result == Err(vk::ErrorCode::OUT_OF_DATE_KHR);
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if self.resized || changed {
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self.recreate_swapchain(window)?;
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} else if let Err(e) = result {
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return Err(anyhow!(e));
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}
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self.frame = (self.frame + 1) % MAX_FRAMES_IN_FLIGHT;
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}
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Ok(())
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}
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/// Recreates the swapchain
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///
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/// # Safety
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/// Here be Dragons
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fn recreate_swapchain(&mut self, window: &Window) -> Result<()> {
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unsafe {
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self.device.device_wait_idle()?;
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self.destroy_swapchain();
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self.data
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.create_swapchain(window, &self.instance, &self.device)?;
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self.data.create_swapchain_image_views(&self.device)?;
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self.data.create_render_pass(&self.instance, &self.device)?;
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self.data.create_pipeline(&self.device)?;
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self.data.create_framebuffers(&self.device)?;
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self.data.create_command_buffers(&self.device)?;
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self.data
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.images_in_flight
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.resize(self.data.swapchain_images.len(), vk::Fence::null());
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}
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Ok(())
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}
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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 QueueFamilyIndices {
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graphics: u32,
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present: u32,
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}
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impl QueueFamilyIndices {
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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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#[derive(Clone, Debug)]
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pub(crate) struct SwapchainSupport {
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capabilities: vk::SurfaceCapabilitiesKHR,
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formats: Vec<vk::SurfaceFormatKHR>,
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present_modes: Vec<vk::PresentModeKHR>,
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}
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impl SwapchainSupport {
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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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Ok(Self {
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capabilities: instance
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.get_physical_device_surface_capabilities_khr(physical_device, data.surface)?,
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formats: instance
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.get_physical_device_surface_formats_khr(physical_device, data.surface)?,
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present_modes: instance
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.get_physical_device_surface_present_modes_khr(physical_device, data.surface)?,
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})
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}
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}
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#[repr(C)]
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#[derive(Copy, Clone, Debug)]
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pub(crate) struct Vertex {
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pos: glm::Vec2,
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color: glm::Vec3,
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}
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impl Vertex {
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fn new(pos: glm::Vec2, color: glm::Vec3) -> Self {
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Self { pos, color }
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}
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pub fn binding_description() -> vk::VertexInputBindingDescription {
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vk::VertexInputBindingDescription::builder()
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.binding(0)
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.stride(size_of::<Vertex>() as u32)
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.input_rate(vk::VertexInputRate::VERTEX)
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.build()
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}
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pub fn attribute_descriptions() -> [vk::VertexInputAttributeDescription; 2] {
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let pos = vk::VertexInputAttributeDescription::builder()
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.binding(0)
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.location(0)
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.format(vk::Format::R32G32_SFLOAT)
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.offset(0)
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.build();
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let color = vk::VertexInputAttributeDescription::builder()
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.binding(0)
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.location(1)
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.format(vk::Format::R32G32B32_SFLOAT)
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.offset(size_of::<glm::Vec2>() as u32)
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.build();
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[pos, color]
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}
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}
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lazy_static! {
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pub(crate) static ref VERTICES: Vec<Vertex> = vec![
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Vertex::new(glm::vec2(0.0, -0.5), glm::vec3(1.0, 0.0, 0.0)),
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Vertex::new(glm::vec2(0.5, 0.5), glm::vec3(0.0, 1.0, 0.0)),
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Vertex::new(glm::vec2(-0.5, 0.5), glm::vec3(0.0, 0.0, 1.0)),
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];
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}
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