Add missing MTLRasterizationRateLayerDescriptor methods

`sampleCount` was skipped because it was defined twice, so let's define
it manually instead. `setSampleCount:` was accidentally skipped too.

crates/objc2/src/topics/about_generated/CHANGELOG.md

@@ -192,6 +192,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   `NSWindowSharingType`, `MTLFeatureSet` etc. now have correctly stripped
   variant names (`NSWindowSharingType::None` instead of
   `NSWindowSharingType::NSWindowSharingNone`).
+* Added the missing mapping for the `sampleCount` property on
+  `MTLRasterizationRateLayerDescriptor`.
 
 
 ## 0.2.2 - 2024-05-21

framework-crates/objc2-metal/src/lib.rs

@@ -60,6 +60,8 @@ mod generated;
 mod packed;
 #[cfg(feature = "unstable-private")]
 mod private;
+#[cfg(feature = "MTLRasterizationRate")]
+mod rasterization_rate;
 #[cfg(feature = "MTLResource")]
 mod resource;
 mod slice;

framework-crates/objc2-metal/src/rasterization_rate.rs

@@ -0,0 +1,13 @@
+use crate::MTLRasterizationRateLayerDescriptor;
+use objc2::extern_methods;
+
+extern_methods!(
+    unsafe impl MTLRasterizationRateLayerDescriptor {
+        /// The number of quality samples that this descriptor uses to
+        /// describe its current function, for the horizontal and vertical
+        /// axis. The depth component of the returned `MTLSize` is always 0.
+        #[cfg(feature = "MTLTypes")]
+        #[method(sampleCount)]
+        pub fn sampleCount(&self) -> crate::MTLSize;
+    }
+);

framework-crates/objc2-metal/translation-config.toml

@@ -24,7 +24,6 @@ protocol.MTLDevice.methods."newRenderPipelineStateWithMeshDescriptor:options:ref
 
 # Duplicated property
 class.MTLRasterizationRateLayerDescriptor.methods.sampleCount.skipped = true
-class.MTLRasterizationRateLayerDescriptor.methods."setSampleCount:".skipped = true
 
 # Needs dispatch
 class.MTLSharedEventListener.methods."initWithDispatchQueue:".skipped = true