bevy/crates/bevy_window/src/raw_handle.rs
VitalyR c313e21d65 Update wgpu to 0.14.0, naga to 0.10.0, winit to 0.27.4, raw-window-handle to 0.5.0, ndk to 0.7 (#6218)
# Objective

- Update `wgpu` to 0.14.0, `naga` to `0.10.0`, `winit` to 0.27.4, `raw-window-handle` to 0.5.0, `ndk` to 0.7.

## Solution

---

## Changelog

### Changed

- Changed `RawWindowHandleWrapper` to `RawHandleWrapper` which wraps both `RawWindowHandle` and `RawDisplayHandle`, which satisfies the `impl HasRawWindowHandle and HasRawDisplayHandle` that `wgpu` 0.14.0 requires.

- Changed `bevy_window::WindowDescriptor`'s `cursor_locked` to `cursor_grab_mode`, change its type from `bool` to `bevy_window::CursorGrabMode`.

## Migration Guide

- Adjust usage of `bevy_window::WindowDescriptor`'s `cursor_locked` to `cursor_grab_mode`, and adjust its type from `bool` to `bevy_window::CursorGrabMode`.
2022-10-19 17:40:23 +00:00

75 lines
3.7 KiB
Rust

use raw_window_handle::{
HasRawDisplayHandle, HasRawWindowHandle, RawDisplayHandle, RawWindowHandle,
};
/// A wrapper over [`RawWindowHandle`] and [`RawDisplayHandle`] 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`])
/// thread-safe.
#[derive(Debug, Clone)]
pub struct RawHandleWrapper {
pub window_handle: RawWindowHandle,
pub display_handle: RawDisplayHandle,
}
impl RawHandleWrapper {
/// Returns a [`HasRawWindowHandle`] + [`HasRawDisplayHandle`] impl, which exposes [`RawWindowHandle`] and [`RawDisplayHandle`].
///
/// # Safety
///
/// Some platforms have constraints on where/how this handle can be used. For example, some platforms don't support doing window
/// operations off of the main thread. The caller must ensure the [`RawHandleWrapper`] is only used in valid contexts.
pub unsafe fn get_handle(&self) -> ThreadLockedRawWindowHandleWrapper {
ThreadLockedRawWindowHandleWrapper(self.clone())
}
pub fn get_display_handle(&self) -> RawDisplayHandle {
self.display_handle
}
pub fn get_window_handle(&self) -> RawWindowHandle {
self.window_handle
}
}
// SAFETY: [`RawHandleWrapper`] is just a normal "raw pointer", which doesn't impl Send/Sync. However the pointer is only
// exposed via an unsafe method that forces the user to make a call for a given platform. (ex: some platforms don't
// support doing window operations off of the main thread).
// A recommendation for this pattern (and more context) is available here:
// https://github.com/rust-windowing/raw-window-handle/issues/59
unsafe impl Send for RawHandleWrapper {}
unsafe impl Sync for RawHandleWrapper {}
/// A [`RawHandleWrapper`] that cannot be sent across threads.
///
/// This safely exposes [`RawWindowHandle`] and [`RawDisplayHandle`], but care must be taken to ensure that the construction itself is correct.
///
/// This can only be constructed via the [`RawHandleWrapper::get_handle()`] method;
/// be sure to read the safety docs there about platform-specific limitations.
/// In many cases, this should only be constructed on the main thread.
pub struct ThreadLockedRawWindowHandleWrapper(RawHandleWrapper);
// SAFETY: the caller has validated that this is a valid context to get [`RawHandleWrapper`]
// as otherwise an instance of this type could not have been constructed
// NOTE: we cannot simply impl HasRawWindowHandle for RawHandleWrapper,
// 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.
unsafe impl HasRawWindowHandle for ThreadLockedRawWindowHandleWrapper {
fn raw_window_handle(&self) -> RawWindowHandle {
self.0.get_window_handle()
}
}
// SAFETY: the caller has validated that this is a valid context to get [`RawDisplayHandle`]
// as otherwise an instance of this type could not have been constructed
// NOTE: we cannot simply impl HasRawDisplayHandle for RawHandleWrapper,
// 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.
unsafe impl HasRawDisplayHandle for ThreadLockedRawWindowHandleWrapper {
fn raw_display_handle(&self) -> RawDisplayHandle {
self.0.get_display_handle()
}
}