Metal iOS xcode15.0 rc

#Metal.framework https://github.com/xamarin/xamarin-macios/pull/19379

diff -ruN /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLDevice.h /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLDevice.h
--- /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLDevice.h	2023-08-22 12:26:34
+++ /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLDevice.h	2023-08-06 07:21:15
@@ -161,6 +161,7 @@
     MTLGPUFamilyApple6  = 1006,
     MTLGPUFamilyApple7  = 1007,
     MTLGPUFamilyApple8  = 1008,
+    MTLGPUFamilyApple9  = 1009,
     
     MTLGPUFamilyMac1 API_DEPRECATED_WITH_REPLACEMENT("MTLGPUFamilyMac2", macos(10.15, 13.0), ios(13.0, 16.0)) = 2001,
     MTLGPUFamilyMac2 = 2002,
diff -ruN /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandBuffer.h /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandBuffer.h
--- /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandBuffer.h	2023-08-22 07:50:32
+++ /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandBuffer.h	2023-08-06 06:47:15
@@ -25,6 +25,8 @@
     MTLIndirectCommandTypeConcurrentDispatch  API_AVAILABLE(macos(11.0), macCatalyst(14.0), ios(13.0)) = (1 << 5), /* Dispatch threadgroups with concurrent execution */
 
     MTLIndirectCommandTypeConcurrentDispatchThreads  API_AVAILABLE(macos(11.0), macCatalyst(14.0), ios(13.0)) = (1 << 6), /* Dispatch threads with concurrent execution */
+    MTLIndirectCommandTypeDrawMeshThreadgroups API_AVAILABLE(macos(14.0), ios(17.0)) = (1 << 7),
+    MTLIndirectCommandTypeDrawMeshThreads API_AVAILABLE(macos(14.0), ios(17.0)) = (1 << 8),
 } API_AVAILABLE(macos(10.14), ios(12.0));
 
 
@@ -95,6 +97,24 @@
  */
 @property (readwrite, nonatomic) NSUInteger maxKernelThreadgroupMemoryBindCount API_AVAILABLE(macos(14.0), ios(17.0));
 
+/*!
+ @abstract
+ The maximum bind index of object stage buffers that can be set per render command.
+ */
+@property (readwrite, nonatomic) NSUInteger maxObjectBufferBindCount API_AVAILABLE(macos(14.0), ios(17.0));
+
+/*!
+ @abstract
+ The maximum bind index of mesh stage buffers that can be set per render command.
+ */
+@property (readwrite, nonatomic) NSUInteger maxMeshBufferBindCount API_AVAILABLE(macos(14.0), ios(17.0));
+
+/*!
+ @abstract
+ The maximum bind index of object threadgroup memory that can be set per render command.
+ The default value is 0.
+ */
+@property (readwrite, nonatomic) NSUInteger maxObjectThreadgroupMemoryBindCount API_AVAILABLE(macos(14.0), ios(17.0));
 
 /*!
  @abstract
diff -ruN /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandEncoder.h /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandEncoder.h
--- /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandEncoder.h	2023-08-17 03:21:55
+++ /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLIndirectCommandEncoder.h	2023-08-06 07:21:16
@@ -50,6 +50,17 @@
 - (void)drawPrimitives:(MTLPrimitiveType)primitiveType vertexStart:(NSUInteger)vertexStart vertexCount:(NSUInteger)vertexCount instanceCount:(NSUInteger)instanceCount baseInstance:(NSUInteger)baseInstance;
 - (void)drawIndexedPrimitives:(MTLPrimitiveType)primitiveType indexCount:(NSUInteger)indexCount indexType:(MTLIndexType)indexType indexBuffer:(id <MTLBuffer>)indexBuffer indexBufferOffset:(NSUInteger)indexBufferOffset instanceCount:(NSUInteger)instanceCount baseVertex:(NSInteger)baseVertex baseInstance:(NSUInteger)baseInstance;
 
+- (void)setObjectThreadgroupMemoryLength:(NSUInteger)length atIndex:(NSUInteger)index API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)setObjectBuffer:(id <MTLBuffer>)buffer offset:(NSUInteger)offset atIndex:(NSUInteger)index API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)setMeshBuffer:(id <MTLBuffer>)buffer offset:(NSUInteger)offset atIndex:(NSUInteger)index API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)drawMeshThreadgroups:(MTLSize)threadgroupsPerGrid // MTLIndirectCommandTypeDrawMeshThreadgroups
+ threadsPerObjectThreadgroup:(MTLSize)threadsPerObjectThreadgroup
+   threadsPerMeshThreadgroup:(MTLSize)threadsPerMeshThreadgroup API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)     drawMeshThreads:(MTLSize)threadsPerGrid // MTLIndirectCommandTypeDrawMeshThreads
+ threadsPerObjectThreadgroup:(MTLSize)threadsPerObjectThreadgroup
+   threadsPerMeshThreadgroup:(MTLSize)threadsPerMeshThreadgroup API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)setBarrier API_AVAILABLE(macos(14.0), ios(17.0));
+- (void)clearBarrier API_AVAILABLE(macos(14.0), ios(17.0));
 
 - (void)reset;
 
diff -ruN /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLRenderPipeline.h /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLRenderPipeline.h
--- /Applications/Xcode_15.0.0-beta8.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLRenderPipeline.h	2023-08-17 02:54:47
+++ /Applications/Xcode_15.0.0-rc.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/System/Library/Frameworks/Metal.framework/Headers/MTLRenderPipeline.h	2023-08-06 06:47:15
@@ -675,6 +675,13 @@
  */
 @property (nonatomic) MTLPixelFormat stencilAttachmentPixelFormat;
 
+/*!
+ @property supportIndirectCommandBuffers
+ @abstract Whether this pipeline will support being used by commands in an indirect command buffer.
+ @discussion The default value is NO.
+ */
+@property (readwrite, nonatomic) BOOL supportIndirectCommandBuffers API_AVAILABLE(macos(14.0), ios(17.0));
+
 
 /*!
  @property objectLinkedFunctions