Add validation layers for debugging
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parent
acd2632271
commit
424be52645
82
src/app.rs
82
src/app.rs
@ -1,10 +1,41 @@
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use anyhow::{anyhow, Result};
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use log::*;
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use std::collections::HashSet;
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use std::ffi::CStr;
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use std::os::raw::c_void;
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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::window as vk_window;
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use winit::window::Window;
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unsafe fn create_instance(window: &Window, entry: &Entry) -> Result<Instance> {
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const VALIDATION_ENABLED: bool = cfg!(debug_assertions);
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const VALIDATION_LAYER: vk::ExtensionName =
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vk::ExtensionName::from_bytes(b"VK_LAYER_KHRONOS_validation");
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extern "system" fn debug_callback(
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severity: vk::DebugUtilsMessageSeverityFlagsEXT,
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type_: vk::DebugUtilsMessageTypeFlagsEXT,
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data: *const vk::DebugUtilsMessengerCallbackDataEXT,
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_: *mut c_void,
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) -> vk::Bool32 {
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let data = unsafe { *data };
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let message = unsafe { CStr::from_ptr(data.message) }.to_string_lossy();
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if severity >= vk::DebugUtilsMessageSeverityFlagsEXT::ERROR {
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error!("({:?}) {}", type_, message);
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} else if severity >= vk::DebugUtilsMessageSeverityFlagsEXT::WARNING {
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warn!("({:?}) {}", type_, message);
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} else if severity >= vk::DebugUtilsMessageSeverityFlagsEXT::INFO {
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debug!("({:?}) {}", type_, message);
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} else {
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trace!("({:?}) {}", type_, message);
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}
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vk::FALSE
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}
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unsafe fn create_instance(window: &Window, entry: &Entry, data: &mut AppData) -> Result<Instance> {
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let application_info = vk::ApplicationInfo::builder()
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.application_name(b"Vulkan Tutorial\0")
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.application_version(vk::make_version(1, 0, 0))
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@ -12,10 +43,29 @@ unsafe fn create_instance(window: &Window, entry: &Entry) -> Result<Instance> {
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.engine_version(vk::make_version(1, 0, 0))
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.api_version(vk::make_version(1, 0, 0));
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let available_layers = entry
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.enumerate_instance_layer_properties()?
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.iter()
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.map(|l| l.layer_name)
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.collect::<HashSet<_>>();
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if VALIDATION_ENABLED && !available_layers.contains(&VALIDATION_LAYER) {
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return Err(anyhow!("Validation layer requested but not supported."));
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}
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let layers = if VALIDATION_ENABLED {
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vec![VALIDATION_LAYER.as_ptr()]
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} else {
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Vec::new()
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};
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let mut extensions = vk_window::get_required_instance_extensions(window)
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.iter()
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.map(|e| e.as_ptr())
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.collect::<Vec<_>>();
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if VALIDATION_ENABLED {
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extensions.push(vk::EXT_DEBUG_UTILS_EXTENSION.name.as_ptr());
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}
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// Compatibility extension for macOS
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let flags = if entry
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@ -29,12 +79,24 @@ unsafe fn create_instance(window: &Window, entry: &Entry) -> Result<Instance> {
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vk::InstanceCreateFlags::empty()
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};
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let info = vk::InstanceCreateInfo::builder()
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let mut info = vk::InstanceCreateInfo::builder()
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.application_info(&application_info)
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.enabled_layer_names(&layers)
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.enabled_extension_names(&extensions)
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.flags(flags);
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Ok(entry.create_instance(&info, None)?)
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let mut debug_info = vk::DebugUtilsMessengerCreateInfoEXT::builder()
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.message_severity(vk::DebugUtilsMessageSeverityFlagsEXT::all())
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.message_type(vk::DebugUtilsMessageTypeFlagsEXT::all())
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.user_callback(Some(debug_callback));
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if VALIDATION_ENABLED {
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info = info.push_next(&mut debug_info);
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}
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let instance = entry.create_instance(&info, None)?;
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Ok(instance)
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}
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/// Our Vulkan app.
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@ -42,6 +104,7 @@ unsafe fn create_instance(window: &Window, entry: &Entry) -> Result<Instance> {
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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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}
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impl App {
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@ -49,9 +112,10 @@ impl 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 instance = create_instance(window, &entry)?;
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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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Ok(Self { entry, instance })
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Ok(Self { entry, instance, data })
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}
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/// Renders a frame for our Vulkan app.
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@ -61,10 +125,16 @@ impl App {
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/// Destroys our Vulkan app.
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pub unsafe fn destroy(&mut self) {
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if VALIDATION_ENABLED {
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self.instance.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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}
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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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struct AppData {
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messenger: vk::DebugUtilsMessengerEXT,
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}
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14
src/main.rs
14
src/main.rs
@ -1,12 +1,12 @@
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#![allow(
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dead_code,
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unused_variables,
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clippy::too_many_arguments,
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clippy::unnecessary_wraps
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)]
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// #![allow(
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// dead_code,
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// unused_variables,
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// clippy::too_many_arguments,
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// clippy::unnecessary_wraps
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// )]
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mod app;
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use app::{App, AppData};
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use app::App;
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use anyhow::Result;
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use winit::dpi::LogicalSize;
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