Use safe window handles and wgpu::Instance::create_surface

I noticed that bevyengine#12978 introduces
a reference counted wrapper around windows, but still uses
`RawWindowHandle` and `RawDisplayHandle`, with
`wgpu::Instance::create_surface_unsafe`. This can be changed easily
enough to use `wgpu::Instance::create_surface`, and not use the raw
handles anywhere.

Apparently we can just cast a `Arc<W>` to an `Arc<dyn Trait>`, so that
makes `WindowWrapper` a little simpler too.

crates/bevy_render/src/view/window/mod.rs

@@ -20,7 +20,7 @@ use std::{
  sync::PoisonError,
 };
 use wgpu::{
- BufferUsages, SurfaceConfiguration, SurfaceTargetUnsafe, TextureFormat, TextureUsages,
+ BufferUsages, SurfaceConfiguration, SurfaceTarget, TextureFormat, TextureUsages,
  TextureViewDescriptor,
 };
 
@@ -456,18 +456,13 @@ pub fn create_surfaces(
  .surfaces
  .entry(window.entity)
  .or_insert_with(|| {
- let surface_target = SurfaceTargetUnsafe::RawHandle {
- raw_display_handle: window.handle.display_handle,
- raw_window_handle: window.handle.window_handle,
- };
  // SAFETY: The window handles in ExtractedWindows will always be valid objects to create surfaces on
- let surface = unsafe {
- // NOTE: On some OSes this MUST be called from the main thread.
- // As of wgpu 0.15, only fallible if the given window is a HTML canvas and obtaining a WebGPU or WebGL2 context fails.
- render_instance
- .create_surface_unsafe(surface_target)
- .expect("Failed to create wgpu surface")
- };
+ // NOTE: On some OSes this MUST be called from the main thread.
+ let surface_target = SurfaceTarget::from(unsafe { window.handle.get_handle() });
+ // As of wgpu 0.15, only fallible if the given window is a HTML canvas and obtaining a WebGPU or WebGL2 context fails.
+ let surface = render_instance
+ .create_surface(surface_target)
+ .expect("Failed to create wgpu surface");
  let caps = surface.get_capabilities(&render_adapter);
  let formats = caps.formats;
  // For future HDR output support, we'll need to request a format that supports HDR,

crates/bevy_window/src/raw_handle.rs

@@ -2,10 +2,9 @@
 
 use bevy_ecs::prelude::Component;
 use raw_window_handle::{
- DisplayHandle, HandleError, HasDisplayHandle, HasWindowHandle, RawDisplayHandle,
- RawWindowHandle, WindowHandle,
+ DisplayHandle, HandleError, HasDisplayHandle, HasWindowHandle, WindowHandle,
 };
-use std::{any::Any, marker::PhantomData, ops::Deref, sync::Arc};
+use std::{fmt, ops::Deref, sync::Arc};
 
 /// A wrapper over a window.
 ///
@@ -16,16 +15,14 @@ use std::{any::Any, marker::PhantomData, ops::Deref, sync::Arc};
 /// which gets picked up by the renderer during extraction.
 #[derive(Debug)]
 pub struct WindowWrapper<W> {
- reference: Arc<dyn Any + Send + Sync>,
- ty: PhantomData<W>,
+ reference: Arc<W>,
 }
 
 impl<W: Send + Sync + 'static> WindowWrapper<W> {
  /// Creates a `WindowWrapper` from a window.
  pub fn new(window: W) -> WindowWrapper<W> {
  WindowWrapper {
  reference: Arc::new(window),
- ty: PhantomData,
  }
  }
 }
@@ -34,22 +31,27 @@ impl<W: 'static> Deref for WindowWrapper<W> {
  type Target = W;
 
  fn deref(&self) -> &Self::Target {
- self.reference.downcast_ref::<W>().unwrap()
+ &self.reference
  }
 }
 
-/// A wrapper over [`RawWindowHandle`] and [`RawDisplayHandle`] that allows us to safely pass it across threads.
+trait WindowTrait: HasWindowHandle + HasDisplayHandle {}
+impl<T: HasWindowHandle + HasDisplayHandle> WindowTrait for T {}
+
+/// A wrapper over [`HasWindowHandle`] and [`HasDisplayHandle`] that allows us to safely pass it across threads.
 ///
 /// Depending on the platform, the underlying pointer-containing handle cannot be used on all threads,
-/// and so we cannot simply make it (or any type that has a safe operation to get a [`RawWindowHandle`] or [`RawDisplayHandle`])
+/// and so we cannot simply make it (or any type that has a safe operation to get a [`WindowHandle`] or [`DisplayHandle`])
 /// thread-safe.
-#[derive(Debug, Clone, Component)]
+#[derive(Clone, Component)]
 pub struct RawHandleWrapper {
- _window: Arc<dyn Any + Send + Sync>,
- /// Raw handle to a window.
- pub window_handle: RawWindowHandle,
- /// Raw handle to the display server.
- pub display_handle: RawDisplayHandle,
+ window: Arc<dyn WindowTrait>,
+}
+
+impl fmt::Debug for RawHandleWrapper {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
+ f.debug_struct("RawHandleWrapper").finish_non_exhaustive()
+ }
 }
 
 impl RawHandleWrapper {
@@ -58,9 +60,7 @@ impl RawHandleWrapper {
  window: &WindowWrapper<W>,
  ) -> Result<RawHandleWrapper, HandleError> {
  Ok(RawHandleWrapper {
- _window: window.reference.clone(),
- window_handle: window.window_handle()?.as_raw(),
- display_handle: window.display_handle()?.as_raw(),
+ window: window.reference.clone(),
  })
  }
 
@@ -101,7 +101,7 @@ impl HasWindowHandle for ThreadLockedRawWindowHandleWrapper {
  // as the `raw_window_handle` method is safe. We cannot guarantee that all calls
  // of this method are correct (as it may be off the main thread on an incompatible platform),
  // and so exposing a safe method to get a [`RawWindowHandle`] directly would be UB.
- Ok(unsafe { WindowHandle::borrow_raw(self.0.window_handle) })
+ self.0.window.window_handle()
  }
 }
 
@@ -113,6 +113,6 @@ impl HasDisplayHandle for ThreadLockedRawWindowHandleWrapper {
  // as the `raw_display_handle` method is safe. We cannot guarantee that all calls
  // of this method are correct (as it may be off the main thread on an incompatible platform),
  // and so exposing a safe method to get a [`RawDisplayHandle`] directly would be UB.
- Ok(unsafe { DisplayHandle::borrow_raw(self.0.display_handle) })
+ self.0.window.display_handle()
  }
 }