Backends: Metal: Update deprecated property 'sampleCount'->'rasterSampleCount' (#5603)

backends/imgui_impl_metal.mm

@@ -12,6 +12,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2022-08-23: Metal: Update deprecated property 'sampleCount'->'rasterSampleCount'.
 //  2022-07-05: Metal: Add dispatch synchronization.
 //  2022-06-30: Metal: Use __bridge for ARC based systems.
 //  2022-06-01: Metal: Fixed null dereference on exit inside command buffer completion handler.
@@ -552,7 +553,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     pipelineDescriptor.vertexFunction = vertexFunction;
     pipelineDescriptor.fragmentFunction = fragmentFunction;
     pipelineDescriptor.vertexDescriptor = vertexDescriptor;
-    pipelineDescriptor.sampleCount = self.framebufferDescriptor.sampleCount;
+    pipelineDescriptor.rasterSampleCount = self.framebufferDescriptor.sampleCount;
     pipelineDescriptor.colorAttachments[0].pixelFormat = self.framebufferDescriptor.colorPixelFormat;
     pipelineDescriptor.colorAttachments[0].blendingEnabled = YES;
     pipelineDescriptor.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd;

docs/CHANGELOG.txt

@@ -84,6 +84,7 @@ Other Changes:
   to use the Item Picker in e.g. menus. (#2673)
 - Backends: Metal: Use __bridge for ARC based systems. (#5403) [@stack]
 - Backends: Metal: Add dispatch synchronization. (#5447) [@luigifcruz]
+- Backends: Metal: Update deprecated property 'sampleCount'->'rasterSampleCount'. (#5603) [@dcvz]
 - Backends: OSX: Fixes to support full app creation in C++. (#5403) [@stack]