Fixed buffer sizes encoding on Metal. (gfx-rs#3047)

CHANGELOG.md

@@ -93,6 +93,7 @@ SurfaceConfiguration {
 - Add the missing `msg_send![view, retain]` call within `from_view` by @jinleili in [#2976](https://github.com/gfx-rs/wgpu/pull/2976)
 - Fix `max_buffer` `max_texture` and `max_vertex_buffers` limits by @jinleili in [#2978](https://github.com/gfx-rs/wgpu/pull/2978)
 - Remove PrivateCapabilities's `format_rgb10a2_unorm_surface` field by @jinleili in [#2981](https://github.com/gfx-rs/wgpu/pull/2981)
+- Fix `_buffer_sizes` encoding by @dtiselice in [#3047](https://github.com/gfx-rs/wgpu/pull/3047)
 
 #### Vulkan
 - Fix `astc_hdr` formats support by @jinleili in [#2971]](https://github.com/gfx-rs/wgpu/pull/2971)

wgpu-hal/src/metal/command.rs

@@ -76,13 +76,12 @@ impl super::CommandState {
         let slot = stage_info.sizes_slot?;
 
         result_sizes.clear();
-        result_sizes.extend(
-            stage_info
-                .sized_bindings
-                .iter()
-                .filter_map(|br| self.storage_buffer_length_map.get(br))
-                .map(|size| size.get().min(!0u32 as u64) as u32),
-        );
+        result_sizes.extend(stage_info.sized_bindings.iter().map(|br| {
+            self.storage_buffer_length_map
+                .get(br)
+                .map(|size| u32::try_from(size.get()).unwrap_or(u32::MAX))
+                .unwrap_or_default()
+        }));
 
         if !result_sizes.is_empty() {
             Some((slot as _, result_sizes))