1732c2253b
# Objective - A step towards splitting out bevy_camera from bevy_render ## Solution - Move a shim type into bevy_utils to avoid a dependency cycle - Manually expand Deref/DerefMut to avoid having a bevy_derive dependency so early in the dep tree ## Testing - It compiles
51 lines
1.8 KiB
Rust
51 lines
1.8 KiB
Rust
/// A wrapper to safely make `wgpu` types Send / Sync on web with atomics enabled.
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///
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/// On web with `atomics` enabled the inner value can only be accessed
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/// or dropped on the `wgpu` thread or else a panic will occur.
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/// On other platforms the wrapper simply contains the wrapped value.
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#[derive(Debug, Clone)]
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pub struct WgpuWrapper<T>(
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#[cfg(not(all(target_arch = "wasm32", target_feature = "atomics")))] T,
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#[cfg(all(target_arch = "wasm32", target_feature = "atomics"))] send_wrapper::SendWrapper<T>,
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);
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// SAFETY: SendWrapper is always Send + Sync.
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#[cfg(all(target_arch = "wasm32", target_feature = "atomics"))]
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#[expect(unsafe_code, reason = "Blanket-impl Send requires unsafe.")]
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unsafe impl<T> Send for WgpuWrapper<T> {}
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#[cfg(all(target_arch = "wasm32", target_feature = "atomics"))]
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#[expect(unsafe_code, reason = "Blanket-impl Sync requires unsafe.")]
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unsafe impl<T> Sync for WgpuWrapper<T> {}
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impl<T> WgpuWrapper<T> {
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/// Constructs a new instance of `WgpuWrapper` which will wrap the specified value.
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pub fn new(t: T) -> Self {
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#[cfg(not(all(target_arch = "wasm32", target_feature = "atomics")))]
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return Self(t);
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#[cfg(all(target_arch = "wasm32", target_feature = "atomics"))]
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return Self(send_wrapper::SendWrapper::new(t));
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}
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/// Unwraps the value.
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pub fn into_inner(self) -> T {
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#[cfg(not(all(target_arch = "wasm32", target_feature = "atomics")))]
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return self.0;
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#[cfg(all(target_arch = "wasm32", target_feature = "atomics"))]
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return self.0.take();
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}
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}
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impl<T> core::ops::Deref for WgpuWrapper<T> {
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type Target = T;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl<T> core::ops::DerefMut for WgpuWrapper<T> {
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fn deref_mut(&mut self) -> &mut Self::Target {
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&mut self.0
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}
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}
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