MetalKit iOS 10.3 to 11.0 API Differences

	Declaration
From	NSString *const _Nonnull MTKModelErrorDomain
To	MTKModelError _Nonnull const MTKModelErrorDomain

	Declaration
From	NSString *const _Nonnull MTKModelErrorKey
To	MTKModelError _Nonnull const MTKModelErrorKey

	Declaration
From	MTLVertexDescriptor * _Nonnull MTKMetalVertexDescriptorFromModelIO(MDLVertexDescriptor * _Nonnull modelIODescriptor)
To	MTLVertexDescriptor * _Nullable MTKMetalVertexDescriptorFromModelIO(MDLVertexDescriptor * _Nonnull modelIODescriptor)

	Declaration
From	MTLVertexDescriptor * _Nonnull MTKMetalVertexDescriptorFromModelIOWithError(MDLVertexDescriptor * _Nonnull modelIODescriptor, NSError * _Nullable * _Nullable error)
To	MTLVertexDescriptor * _Nullable MTKMetalVertexDescriptorFromModelIOWithError(MDLVertexDescriptor * _Nonnull modelIODescriptor, NSError * _Nullable * _Nullable error)

MTKTextureLoader.h

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderErrorDomain
To	MTKTextureLoaderError _Nonnull const MTKTextureLoaderErrorDomain

Modified MTKTextureLoaderErrorKey

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderErrorKey
To	MTKTextureLoaderError _Nonnull const MTKTextureLoaderErrorKey

Modified MTKTextureLoaderOptionAllocateMipmaps

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionAllocateMipmaps
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionAllocateMipmaps

Modified MTKTextureLoaderOptionGenerateMipmaps

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionGenerateMipmaps
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionGenerateMipmaps

Modified MTKTextureLoaderOptionSRGB

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionSRGB
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionSRGB

Modified MTKTextureLoaderOptionTextureUsage

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionTextureUsage
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionTextureUsage

Modified MTKTextureLoaderOptionTextureCPUCacheMode

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionTextureCPUCacheMode
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionTextureCPUCacheMode

Modified MTKTextureLoaderOptionTextureStorageMode

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionTextureStorageMode
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionTextureStorageMode

Modified MTKTextureLoaderOptionCubeLayout

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionCubeLayout
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionCubeLayout

Modified MTKTextureLoaderCubeLayoutVertical

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderCubeLayoutVertical
To	MTKTextureLoaderCubeLayout _Nonnull const MTKTextureLoaderCubeLayoutVertical

Modified MTKTextureLoaderOptionOrigin

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOptionOrigin
To	MTKTextureLoaderOption _Nonnull const MTKTextureLoaderOptionOrigin

Modified MTKTextureLoaderOriginTopLeft

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOriginTopLeft
To	MTKTextureLoaderOrigin _Nonnull const MTKTextureLoaderOriginTopLeft

Modified MTKTextureLoaderOriginBottomLeft

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOriginBottomLeft
To	MTKTextureLoaderOrigin _Nonnull const MTKTextureLoaderOriginBottomLeft

Modified MTKTextureLoaderOriginFlippedVertically

	Declaration
From	NSString *const _Nonnull MTKTextureLoaderOriginFlippedVertically
To	MTKTextureLoaderOrigin _Nonnull const MTKTextureLoaderOriginFlippedVertically

Modified -[MTKTextureLoader newTextureWithContentsOfURL:options:completionHandler:]

	Declaration
From	- (void)newTextureWithContentsOfURL:(nonnull NSURL )URL options:(nullable NSDictionary<NSString ,NSObject > )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler
To	- (void)newTextureWithContentsOfURL:(nonnull NSURL )URL options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler

Modified -[MTKTextureLoader newTextureWithName:scaleFactor:bundle:options:completionHandler:]

	Declaration
From	- (void)newTextureWithName:(nonnull NSString )name scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<NSString ,NSObject > *)options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler
To	- (void)newTextureWithName:(nonnull NSString )name scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<MTKTextureLoaderOption,id> *)options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler

Modified -[MTKTextureLoader newTexturesWithContentsOfURLs:options:completionHandler:]

	Declaration
From	- (void)newTexturesWithContentsOfURLs:(nonnull NSArray<NSURL > )URLs options:(nullable NSDictionary<NSString ,NSObject > *)options completionHandler:(nonnull MTKTextureLoaderArrayCallback)completionHandler
To	- (void)newTexturesWithContentsOfURLs:(nonnull NSArray<NSURL > )URLs options:(nullable NSDictionary<MTKTextureLoaderOption,id> *)options completionHandler:(nonnull MTKTextureLoaderArrayCallback)completionHandler

Modified -[MTKTextureLoader newTexturesWithNames:scaleFactor:bundle:options:completionHandler:]

	Declaration
From	- (void)newTexturesWithNames:(nonnull NSArray<NSString > )names scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<NSString ,NSObject > )options completionHandler:(nonnull MTKTextureLoaderArrayCallback)completionHandler
To	- (void)newTexturesWithNames:(nonnull NSArray<NSString > )names scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options completionHandler:(nonnull MTKTextureLoaderArrayCallback)completionHandler

Modified -[MTKTextureLoader newTextureWithData:options:completionHandler:]

	Declaration
From	- (void)newTextureWithData:(nonnull NSData )data options:(nullable NSDictionary<NSString ,NSObject > )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler
To	- (void)newTextureWithData:(nonnull NSData )data options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler

Modified -[MTKTextureLoader newTextureWithCGImage:options:completionHandler:]

	Declaration
From	- (void)newTextureWithCGImage:(nonnull CGImageRef)cgImage options:(nullable NSDictionary<NSString ,NSObject > *)options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler
To	- (void)newTextureWithCGImage:(nonnull CGImageRef)cgImage options:(nullable NSDictionary<MTKTextureLoaderOption,id> *)options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler

Modified -[MTKTextureLoader newTextureWithMDLTexture:options:completionHandler:]

	Declaration
From	- (void)newTextureWithMDLTexture:(nonnull MDLTexture )texture options:(nullable NSDictionary<NSString ,NSObject > )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler
To	- (void)newTextureWithMDLTexture:(nonnull MDLTexture )texture options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options completionHandler:(nonnull MTKTextureLoaderCallback)completionHandler

Modified -[MTKTextureLoader newTextureWithContentsOfURL:options:error:]

	Declaration
From	- (nullable id<MTLTexture>)newTextureWithContentsOfURL:(nonnull NSURL )URL options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError * _Nullable *)error
To	- (nullable id<MTLTexture>)newTextureWithContentsOfURL:(nonnull NSURL )URL options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError * _Nullable *)error

Modified -[MTKTextureLoader newTexturesWithContentsOfURLs:options:error:]

	Declaration
From	- (nonnull NSArray<id<MTLTexture>> )newTexturesWithContentsOfURLs:(nonnull NSArray<NSURL > )URLs options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError * _Nullable *)error
To	- (nonnull NSArray<id<MTLTexture>> )newTexturesWithContentsOfURLs:(nonnull NSArray<NSURL > )URLs options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError * _Nullable *)error

Modified -[MTKTextureLoader newTextureWithData:options:error:]

	Declaration
From	- (nullable id<MTLTexture>)newTextureWithData:(nonnull NSData )data options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError * _Nullable *)error
To	- (nullable id<MTLTexture>)newTextureWithData:(nonnull NSData )data options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError * _Nullable *)error

Modified -[MTKTextureLoader newTextureWithCGImage:options:error:]

	Declaration
From	- (nullable id<MTLTexture>)newTextureWithCGImage:(nonnull CGImageRef)cgImage options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError _Nullable *)error
To	- (nullable id<MTLTexture>)newTextureWithCGImage:(nonnull CGImageRef)cgImage options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError _Nullable *)error

Modified -[MTKTextureLoader newTextureWithMDLTexture:options:error:]

	Declaration
From	- (nullable id<MTLTexture>)newTextureWithMDLTexture:(nonnull MDLTexture )texture options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError * _Nullable *)error
To	- (nullable id<MTLTexture>)newTextureWithMDLTexture:(nonnull MDLTexture )texture options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError * _Nullable *)error

Modified -[MTKTextureLoader newTextureWithName:scaleFactor:bundle:options:error:]

	Declaration
From	- (nullable id<MTLTexture>)newTextureWithName:(nonnull NSString )name scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<NSString ,NSObject > )options error:(nullable NSError _Nullable *)error
To	- (nullable id<MTLTexture>)newTextureWithName:(nonnull NSString )name scaleFactor:(CGFloat)scaleFactor bundle:(nullable NSBundle )bundle options:(nullable NSDictionary<MTKTextureLoaderOption,id> )options error:(nullable NSError _Nullable *)error