Make Metal an optional part of the build

See the corresponding commit in the main repo
2024-11-26 22:20:22 +00:00 · 2022-12-31 13:16:33 -05:00 · 2022-12-31 13:16:33 -05:00 · ac46a16f60
commit ac46a16f60
parent b93743008c
31 changed files with 340 additions and 49 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@ -4,7 +4,9 @@ remove_sdk_framework(Metal)
 remove_sdk_framework(MetalKit)
 remove_sdk_framework(MetalPerformanceShaders)

-add_subdirectory(deps/indium)
+if (BUILD_METAL)
+	add_subdirectory(deps/indium)
+endif()

 add_compile_options(
 	-fvisibility=hidden
@ -24,6 +26,12 @@ generate_sdk_framework(Metal
 	HEADER "include/Metal"
 )

+if (BUILD_METAL)
+	set(METAL_LINK_INDIUM indium)
+else()
+	set(METAL_LINK_INDIUM "")
+endif()
+
 add_framework(Metal
 	# Metal is not supported in 32-bit apps, but it does still link successfully into such apps.
 	# thus, we have to provide a 32-bit build of the framework, but it doesn't have to provide any
@ -51,7 +59,7 @@ add_framework(Metal
 		system
 		objc
 		Foundation
-		indium
+		${METAL_LINK_INDIUM}
 		cxx
 )

@ -79,6 +87,12 @@ target_include_directories(Metal_private INTERFACE
 	private-include
 )

+if (BUILD_METAL)
+	target_compile_definitions(Metal PUBLIC
+		DARLING_METAL_ENABLED=1
+	)
+endif()
+
 #
 # MetalKit
 #
--- a/examples/triangle/main.m
+++ b/examples/triangle/main.m
@ -37,6 +37,12 @@ int main(int argc, char** argv) {
 	window.styleMask |= NSWindowStyleMaskResizable;

 	id<MTLDevice> device = [MTLCreateSystemDefaultDevice() autorelease];
+
+	if (!device) {
+		fprintf(stderr, "Failed to create system default device. Metal may not be supported on your system.\n");
+		exit(1);
+	}
+
 	MTKView* view = [[[MTKView alloc] initWithFrame: NSMakeRect(0, 0, 800, 600) device: device] autorelease];
 	AAPLRenderer* renderer = [[[AAPLRenderer alloc] initWithMetalKitView: view] autorelease];

--- a/private-include/Metal/MTLBufferInternal.h
+++ b/private-include/Metal/MTLBufferInternal.h
@ -22,15 +22,19 @@

 #import <Metal/MTLBuffer.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLBufferInternal : NSObject <MTLBuffer>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::Buffer> buffer;

 - (instancetype)initWithBuffer: (std::shared_ptr<Indium::Buffer>)buffer
                        device: (id<MTLDevice>)device
               resourceOptions: (MTLResourceOptions)options;
+#endif

@end

--- a/private-include/Metal/MTLCommandBufferInternal.h
+++ b/private-include/Metal/MTLCommandBufferInternal.h
@ -19,11 +19,15 @@

 #import <Metal/MTLCommandBuffer.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLCommandBufferInternal : NSObject <MTLCommandBuffer>

+#if DARLING_METAL_ENABLED
 - (instancetype)initWithCommandBuffer: (std::shared_ptr<Indium::CommandBuffer>)commandBuffer
                         commandQueue: (id<MTLCommandQueue>)commandQueue;
+#endif

@end
--- a/private-include/Metal/MTLCommandQueueInternal.h
+++ b/private-include/Metal/MTLCommandQueueInternal.h
@ -22,12 +22,16 @@

 #import <Metal/MTLCommandQueue.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLCommandQueueInternal : NSObject <MTLCommandQueue>

+#if DARLING_METAL_ENABLED
 - (instancetype)initWithQueue: (std::shared_ptr<Indium::CommandQueue>)queue
                       device: (id<MTLDevice>)device;
+#endif

@end

--- a/private-include/Metal/MTLComputeCommandEncoderInternal.h
+++ b/private-include/Metal/MTLComputeCommandEncoderInternal.h
@ -19,7 +19,9 @@

 #import <Metal/MTLComputeCommandEncoder.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLComputePassSampleBufferAttachmentDescriptorArray (Internal) <NSCopying>

@ -27,13 +29,17 @@

@interface MTLComputePassDescriptor (Internal)

+#if DARLING_METAL_ENABLED
 - (Indium::ComputePassDescriptor)asIndiumDescriptor;
+#endif

@end

@interface MTLComputeCommandEncoderInternal : NSObject <MTLComputeCommandEncoder>

+#if DARLING_METAL_ENABLED
 - (instancetype)initWithEncoder: (std::shared_ptr<Indium::ComputeCommandEncoder>)encoder
                         device: (id<MTLDevice>)device;
+#endif

@end
--- a/private-include/Metal/MTLComputePipelineInternal.h
+++ b/private-include/Metal/MTLComputePipelineInternal.h
@ -22,21 +22,27 @@

 #import <Metal/MTLComputePipeline.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLComputePipelineDescriptor (Internal)

+#if DARLING_METAL_ENABLED
 - (Indium::ComputePipelineDescriptor)asIndiumDescriptor;
+#endif

@end

@interface MTLComputePipelineStateInternal : NSObject <MTLComputePipelineState>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::ComputePipelineState> state;

 - (instancetype)initWithState: (std::shared_ptr<Indium::ComputePipelineState>)state
                       device: (id<MTLDevice>)device
                        label: (NSString*)label;
+#endif

@end

--- a/private-include/Metal/MTLDeviceInternal.h
+++ b/private-include/Metal/MTLDeviceInternal.h
@ -22,12 +22,15 @@

 #import <Metal/MTLDevice.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

 void MTLDeviceDestroyAll(void);

@interface MTLDeviceInternal : NSObject <MTLDevice>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::Device> device;

 - (instancetype)initWithDevice: (std::shared_ptr<Indium::Device>)device;
@ -35,6 +38,7 @@ void MTLDeviceDestroyAll(void);
 - (void)stopPolling;

 - (void)waitUntilPollingIsStopped;
+#endif

@end

--- a/private-include/Metal/MTLDrawableInternal.h
+++ b/private-include/Metal/MTLDrawableInternal.h
@ -22,17 +22,23 @@

 #import <Metal/MTLDrawable.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@protocol MTLDrawableInternal <MTLDrawable>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::Drawable> drawable;
+#endif

@end

@interface MTLDrawableInternal : NSObject <MTLDrawableInternal>

+#if DARLING_METAL_ENABLED
 - (instancetype)initWithDrawable: (std::shared_ptr<Indium::Drawable>)drawable;
+#endif

@end

--- a/private-include/Metal/MTLLibraryInternal.h
+++ b/private-include/Metal/MTLLibraryInternal.h
@ -22,21 +22,27 @@

 #import <Metal/MTLLibrary.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLFunctionInternal : NSObject <MTLFunction>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::Function> function;

 - (instancetype)initWithFunction: (std::shared_ptr<Indium::Function>)function
                          device: (id<MTLDevice>)device;
+#endif

@end

@interface MTLLibraryInternal : NSObject <MTLLibrary>

+#if DARLING_METAL_ENABLED
 - (instancetype)initWithLibrary: (std::shared_ptr<Indium::Library>)library
                         device: (id<MTLDevice>)device;
+#endif

@end

--- a/private-include/Metal/MTLPipelineInternal.h
+++ b/private-include/Metal/MTLPipelineInternal.h
@ -22,17 +22,23 @@

 #import <Metal/MTLPipeline.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

@interface MTLPipelineBufferDescriptor (Internal)

+#if DARLING_METAL_ENABLED
 - (Indium::PipelineBufferDescriptor)asIndiumDescriptor;
+#endif

@end

@interface MTLPipelineBufferDescriptorArray (Internal) <NSCopying>

+#if DARLING_METAL_ENABLED
 - (std::unordered_map<size_t, Indium::PipelineBufferDescriptor>)asIndiumDescriptors;
+#endif

@end

--- a/private-include/Metal/MTLPixelFormatInternal.h
+++ b/private-include/Metal/MTLPixelFormatInternal.h
@ -19,7 +19,9 @@

 #import <Metal/MTLPixelFormat.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

 METAL_DECLARATIONS_BEGIN

--- a/private-include/Metal/MTLRenderCommandEncoderInternal.h
+++ b/private-include/Metal/MTLRenderCommandEncoderInternal.h
@ -22,10 +22,13 @@

 #import <Metal/MTLRenderCommandEncoder.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

 METAL_DECLARATIONS_BEGIN

+#if DARLING_METAL_ENABLED
 NS_INLINE
 Indium::ClearColor MTLClearColorToIndium(MTLClearColor clearColor) {
 	return Indium::ClearColor { clearColor.red, clearColor.green, clearColor.blue, clearColor.alpha };
@ -90,13 +93,16 @@ Indium::ScissorRect MTLScissorRectToIndium(MTLScissorRect rect) {
 - (Indium::RenderPassDescriptor)asIndiumDescriptor;

@end
+#endif

@interface MTLRenderCommandEncoderInternal : NSObject <MTLRenderCommandEncoder>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::RenderCommandEncoder> encoder;

 - (instancetype)initWithEncoder: (std::shared_ptr<Indium::RenderCommandEncoder>)encoder
                         device: (id<MTLDevice>)device;
+#endif

@end

--- a/private-include/Metal/MTLRenderPipelineInternal.h
+++ b/private-include/Metal/MTLRenderPipelineInternal.h
@ -22,12 +22,15 @@

 #import <Metal/MTLRenderPipeline.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

 METAL_DECLARATIONS_BEGIN

@protocol MTLDevice;

+#if DARLING_METAL_ENABLED
@interface MTLRenderPipelineDescriptor (Internal)

 - (Indium::RenderPipelineDescriptor)asIndiumDescriptor;
@ -47,14 +50,17 @@ METAL_DECLARATIONS_BEGIN
 - (Indium::RenderPipelineColorAttachmentDescriptor)asIndiumDescriptor;

@end
+#endif

@interface MTLRenderPipelineStateInternal : NSObject <MTLRenderPipelineState>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::RenderPipelineState> state;

 - (instancetype)initWithState: (std::shared_ptr<Indium::RenderPipelineState>)state
                       device: (id<MTLDevice>)device
                        label: (NSString*)label;
+#endif

@end

--- a/private-include/Metal/MTLTextureInternal.h
+++ b/private-include/Metal/MTLTextureInternal.h
@ -22,8 +22,11 @@

 #import <Metal/MTLTexture.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif

+#if DARLING_METAL_ENABLED
 NS_INLINE
 Indium::TextureSwizzleChannels MTLTextureSwizzleChannelsToIndium(MTLTextureSwizzleChannels channels) {
 	return Indium::TextureSwizzleChannels {
@ -43,16 +46,19 @@ MTLTextureSwizzleChannels MTLTextureSwizzleChannelsFromIndium(Indium::TextureSwi
 		static_cast<MTLTextureSwizzle>(channels.alpha),
 	};
 };
+#endif

 // private export
 MTL_EXPORT
@interface MTLTextureInternal : NSObject <MTLTexture>

+#if DARLING_METAL_ENABLED
@property(readonly) std::shared_ptr<Indium::Texture> texture;

 - (instancetype)initWithTexture: (std::shared_ptr<Indium::Texture>)texture
                         device: (id<MTLDevice>)device
                resourceOptions: (MTLResourceOptions)options;
+#endif

@end

--- a/private-include/Metal/MTLTypesInternal.h
+++ b/private-include/Metal/MTLTypesInternal.h
@ -22,6 +22,7 @@

 #import <Metal/MTLTypes.h>

+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>

 NS_INLINE
@ -41,5 +42,6 @@ Indium::Region MTLRegionToIndium(MTLRegion region) {
 		Indium::Size { region.size.width, region.size.height, region.size.depth },
 	};
 };
+#endif

 #endif // _METAL_MTLTYPESINTERNAL_H_
--- a/private-include/Metal/stubs.h
+++ b/private-include/Metal/stubs.h
@ -34,11 +34,14 @@
 		abort(); \
 	}

-#if !__OBJC2__
+#if !__OBJC2__ || !DARLING_METAL_ENABLED
 	// shut Clang up about unimplemented methods and properties
 	#pragma clang diagnostic ignored "-Wobjc-property-implementation"
 	#pragma clang diagnostic ignored "-Wprotocol"
 	#pragma clang diagnostic ignored "-Wincomplete-implementation"
+	#pragma clang diagnostic ignored "-Wobjc-protocol-property-synthesis"
+
+	#undef DARLING_METAL_ENABLED
 #endif

 #endif // _METAL_STUBS_H_
--- a/src/Metal/MTLBuffer.mm
+++ b/src/Metal/MTLBuffer.mm
@ -24,7 +24,7 @@

@implementation MTLBufferInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize buffer = _buffer;
@synthesize device = _device;
@ -88,6 +88,15 @@

 #else

+@dynamic length;
+@dynamic gpuAddress;
+@dynamic device;
+@dynamic cpuCacheMode;
+@dynamic storageMode;
+@dynamic hazardTrackingMode;
+@dynamic resourceOptions;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLCommandBuffer.mm
+++ b/src/Metal/MTLCommandBuffer.mm
@ -25,6 +25,7 @@
 #import <Metal/stubs.h>
 #import <Metal/MTLRenderCommandEncoderInternal.h>

+#if DARLING_METAL_ENABLED
 // used to take care of RR while passing the block around in C++ code
 struct MTLCommandBufferHandlerWrapper {
 	MTLCommandBufferHandler handler = nil;
@ -59,10 +60,11 @@ struct MTLCommandBufferHandlerWrapper {
 		handler(commandBuffer);
 	};
 };
+#endif

@implementation MTLCommandBufferInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	std::shared_ptr<Indium::CommandBuffer> _commandBuffer;
@ -150,6 +152,10 @@ struct MTLCommandBufferHandlerWrapper {

 #else

+@dynamic commandQueue;
+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLCommandQueue.mm
+++ b/src/Metal/MTLCommandQueue.mm
@ -24,7 +24,7 @@

@implementation MTLCommandQueueInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	std::shared_ptr<Indium::CommandQueue> _queue;
@ -62,6 +62,9 @@

 #else

+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLComputeCommandEncoder.mm
+++ b/src/Metal/MTLComputeCommandEncoder.mm
@ -26,7 +26,7 @@

@implementation MTLComputePassSampleBufferAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (id)copyWithZone: (NSZone*)zone
 {
@ -46,6 +46,10 @@

 #else

+@dynamic sampleBuffer;
+@dynamic startOfEncoderSampleIndex;
+@dynamic endOfEncoderSampleIndex;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -54,7 +58,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePassSampleBufferAttachmentDescriptorArray

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	NSMutableDictionary<NSNumber*, MTLComputePassSampleBufferAttachmentDescriptor*>* _dict;
@ -108,7 +112,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePassSampleBufferAttachmentDescriptorArray (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (id)copyWithZone: (NSZone*)zone
 {
@ -121,7 +125,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePassDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 + (MTLComputePassDescriptor*)computePassDescriptor
 {
@ -154,6 +158,9 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic dispatchType;
+@dynamic sampleBufferAttachments;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -162,7 +169,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePassDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::ComputePassDescriptor)asIndiumDescriptor
 {
@ -178,7 +185,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputeCommandEncoderInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	std::shared_ptr<Indium::ComputeCommandEncoder> _encoder;
@ -269,6 +276,10 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic dispatchType;
+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLComputePipeline.mm
+++ b/src/Metal/MTLComputePipeline.mm
@ -26,7 +26,7 @@

@implementation MTLComputePipelineDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (instancetype)init
 {
@ -112,6 +112,20 @@

 #else

+@dynamic computeFunction;
+@dynamic threadGroupSizeIsMultipleOfThreadExecutionWidth;
+@dynamic maxTotalThreadsPerThreadgroup;
+@dynamic maxCallStackDepth;
+@dynamic stageInputDescriptor;
+@dynamic buffers;
+@dynamic supportIndirectCommandBuffers;
+@dynamic preloadedLibraries;
+@dynamic insertLibraries;
+@dynamic linkedFunctions;
+@dynamic supportAddingBinaryFunctions;
+@dynamic binaryArchives;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -120,7 +134,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePipelineDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::ComputePipelineDescriptor)asIndiumDescriptor
 {
@ -145,7 +159,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLComputePipelineStateInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize device = _device;
@synthesize state = _pso;
@ -223,6 +237,13 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic maxTotalThreadsPerThreadgroup;
+@dynamic threadExecutionWidth;
+@dynamic staticThreadgroupMemoryLength;
+@dynamic device;
+@dynamic supportIndirectCommandBuffers;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLDevice.mm
+++ b/src/Metal/MTLDevice.mm
@ -31,7 +31,7 @@ MTL_EXTERN const MTLDeviceNotificationName MTLDeviceWasAddedNotification = @"MTL
 MTL_EXTERN const MTLDeviceNotificationName MTLDeviceRemovalRequestedNotification = @"MTLDeviceRemovalRequested";
 MTL_EXTERN const MTLDeviceNotificationName MTLDeviceWasRemovedNotification = @"MTLDeviceWasRemoved";

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 static NSMutableArray<MTLDeviceInternal*>* devices = nil;
 static dispatch_once_t devicesInitToken = 0;
@ -68,7 +68,7 @@ void MTLDeviceDestroyAll(void) {

 MTL_EXTERN
 id<MTLDevice> MTLCreateSystemDefaultDevice(void) {
-#if __OBJC2__
+#if DARLING_METAL_ENABLED
 	ensureDevices();
 	if (systemDefaultDevice) {
 		return [systemDefaultDevice retain];
@ -79,7 +79,7 @@ id<MTLDevice> MTLCreateSystemDefaultDevice(void) {

 MTL_EXTERN
 NSArray<id<MTLDevice>>* MTLCopyAllDevices(void) {
-#if __OBJC2__
+#if DARLING_METAL_ENABLED
 	ensureDevices();
 	return [devices copy];
 #else
@ -104,7 +104,7 @@ void MTLRemoveDeviceObserver(id<NSObject> observer) {

@implementation MTLDeviceInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	NSThread* _pollingThread;
--- a/src/Metal/MTLDrawable.mm
+++ b/src/Metal/MTLDrawable.mm
@ -22,7 +22,7 @@

@implementation MTLDrawableInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize drawable = _drawable;

@ -72,6 +72,9 @@

 #else

+@dynamic drawableID;
+@dynamic presentedTime;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLLibrary.mm
+++ b/src/Metal/MTLLibrary.mm
@ -23,7 +23,7 @@

@implementation MTLFunctionInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize function = _function;
@synthesize device = _device;
@ -76,6 +76,17 @@

 #else

+@dynamic device;
+@dynamic functionType;
+@dynamic name;
+@dynamic options;
+@dynamic patchType;
+@dynamic patchControlPointCount;
+@dynamic vertexAttributes;
+@dynamic stageInputAttributes;
+@dynamic functionConstantsDictionary;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -84,7 +95,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLLibraryInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	std::shared_ptr<Indium::Library> _library;
@ -135,6 +146,12 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic installName;
+@dynamic type;
+@dynamic functionNames;
+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLPipeline.mm
+++ b/src/Metal/MTLPipeline.mm
@ -22,7 +22,7 @@

@implementation MTLPipelineBufferDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (instancetype)init
 {
@ -45,6 +45,8 @@

 #else

+@dynamic mutability;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -53,7 +55,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLPipelineBufferDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::PipelineBufferDescriptor)asIndiumDescriptor
 {
@ -68,7 +70,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLPipelineBufferDescriptorArray

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	NSMutableDictionary<NSNumber*, MTLPipelineBufferDescriptor*>* _dict;
@ -122,7 +124,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLPipelineBufferDescriptorArray (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (id)copyWithZone: (NSZone*)zone
 {
--- a/src/Metal/MTLRenderCommandEncoder.mm
+++ b/src/Metal/MTLRenderCommandEncoder.mm
@ -29,7 +29,7 @@

@implementation MTLRenderPassAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize texture = _texture;
@synthesize level = _level;
@ -87,6 +87,18 @@

 #else

+@dynamic texture;
+@dynamic level;
+@dynamic slice;
+@dynamic depthPlane;
+@dynamic loadAction;
+@dynamic storeAction;
+@dynamic storeActionOptions;
+@dynamic resolveTexture;
+@dynamic resolveLevel;
+@dynamic resolveSlice;
+@dynamic resolveDepthPlane;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -95,7 +107,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassAttachmentDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPassAttachmentDescriptor)asIndiumDescriptor
 {
@ -120,7 +132,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassColorAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize clearColor = _clearColor;

@ -149,6 +161,8 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic clearColor;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -157,7 +171,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassColorAttachmentDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPassColorAttachmentDescriptor)asIndiumDescriptor
 {
@ -173,7 +187,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassDepthAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize clearDepth = _clearDepth;
@synthesize depthResolveFilter = _depthResolveFilter;
@ -204,6 +218,9 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic clearDepth;
+@dynamic depthResolveFilter;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -212,7 +229,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassDepthAttachmentDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPassDepthAttachmentDescriptor)asIndiumDescriptor
 {
@ -229,7 +246,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassStencilAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize stencilResolveFilter = _stencilResolveFilter;
@synthesize clearStencil = _clearStencil;
@ -259,6 +276,9 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic stencilResolveFilter;
+@dynamic clearStencil;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -267,7 +287,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassStencilAttachmentDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPassStencilAttachmentDescriptor)asIndiumDescriptor
 {
@ -284,7 +304,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassColorAttachmentDescriptorArray

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	NSMutableDictionary<NSNumber*, MTLRenderPassColorAttachmentDescriptor*>* _dict;
@ -338,7 +358,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassColorAttachmentDescriptorArray (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (id)copyWithZone: (NSZone*)zone
 {
@ -375,7 +395,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize colorAttachments = _colorAttachments;
@synthesize depthAttachment = _depthAttachment;
@ -469,6 +489,21 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic colorAttachments;
+@dynamic depthAttachment;
+@dynamic stencilAttachment;
+@dynamic visibilityResultBuffer;
+@dynamic renderTargetArrayLength;
+@dynamic renderTargetWidth;
+@dynamic renderTargetHeight;
+@dynamic imageblockSampleLength;
+@dynamic threadgroupMemoryLength;
+@dynamic tileWidth;
+@dynamic tileHeight;
+@dynamic defaultRasterSampleCount;
+@dynamic rasterizationRateMap;
+@dynamic sampleBufferAttachments;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -477,7 +512,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPassDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPassDescriptor)asIndiumDescriptor
 {
@ -506,7 +541,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderCommandEncoderInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize device = _device;
@synthesize encoder = _encoder;
@ -714,6 +749,9 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLRenderPipeline.mm
+++ b/src/Metal/MTLRenderPipeline.mm
@ -27,7 +27,7 @@

@implementation MTLRenderPipelineDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize vertexFunction = _vertexFunction;
@synthesize fragmentFunction = _fragmentFunction;
@ -169,6 +169,40 @@

 #else

+@dynamic vertexFunction;
+@dynamic fragmentFunction;
+@dynamic maxVertexCallStackDepth;
+@dynamic maxFragmentCallStackDepth;
+@dynamic vertexDescriptor;
+@dynamic vertexBuffers;
+@dynamic fragmentBuffers;
+@dynamic colorAttachments;
+@dynamic depthAttachmentPixelFormat;
+@dynamic stencilAttachmentPixelFormat;
+@dynamic sampleCount;
+@dynamic alphaToCoverageEnabled;
+@dynamic alphaToOneEnabled;
+@dynamic rasterizationEnabled;
+@dynamic inputPrimitiveTopology;
+@dynamic rasterSampleCount;
+@dynamic maxTessellationFactor;
+@dynamic tessellationFactorScaleEnabled;
+@dynamic tessellationFactorFormat;
+@dynamic tessellationControlPointIndexType;
+@dynamic tessellationFactorStepFunction;
+@dynamic tessellationOutputWindingOrder;
+@dynamic tessellationPartitionMode;
+@dynamic supportIndirectCommandBuffers;
+@dynamic maxVertexAmplificationCount;
+@dynamic supportAddingVertexBinaryFunctions;
+@dynamic supportAddingFragmentBinaryFunctions;
+@dynamic binaryArchives;
+@dynamic vertexLinkedFunctions;
+@dynamic fragmentLinkedFunctions;
+@dynamic fragmentPreloadedLibraries;
+@dynamic vertexPreloadedLibraries;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -177,7 +211,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPipelineDescriptor)asIndiumDescriptor
 {
@ -220,7 +254,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineColorAttachmentDescriptorArray

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	NSMutableDictionary<NSNumber*, MTLRenderPipelineColorAttachmentDescriptor*>* _dict;
@ -274,7 +308,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineColorAttachmentDescriptorArray (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (id)copyWithZone: (NSZone*)zone
 {
@ -311,7 +345,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineColorAttachmentDescriptor

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize pixelFormat = _pixelFormat;
@synthesize writeMask = _writeMask;
@ -358,6 +392,16 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic pixelFormat;
+@dynamic writeMask;
+@dynamic blendingEnabled;
+@dynamic alphaBlendOperation;
+@dynamic rgbBlendOperation;
+@dynamic destinationAlphaBlendFactor;
+@dynamic destinationRGBBlendFactor;
+@dynamic sourceAlphaBlendFactor;
+@dynamic sourceRGBBlendFactor;
+
 MTL_UNSUPPORTED_CLASS

 #endif
@ -366,7 +410,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineColorAttachmentDescriptor (Internal)

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 - (Indium::RenderPipelineColorAttachmentDescriptor)asIndiumDescriptor
 {
@ -389,7 +433,7 @@ MTL_UNSUPPORTED_CLASS

@implementation MTLRenderPipelineStateInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize state = _state;
@synthesize device = _device;
@ -417,6 +461,9 @@ MTL_UNSUPPORTED_CLASS

 #else

+@dynamic device;
+@dynamic label;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/MTLTexture.mm
+++ b/src/Metal/MTLTexture.mm
@ -25,7 +25,7 @@

@implementation MTLTextureInternal

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

@synthesize texture = _texture;
@synthesize device = _device;
@ -215,6 +215,20 @@

 #else

+@dynamic textureType;
+@dynamic pixelFormat;
+@dynamic width;
+@dynamic height;
+@dynamic depth;
+@dynamic mipmapLevelCount;
+@dynamic arrayLength;
+@dynamic sampleCount;
+@dynamic framebufferOnly;
+@dynamic usage;
+@dynamic allowGPUOptimizedContents;
+@dynamic shareable;
+@dynamic swizzle;
+
 MTL_UNSUPPORTED_CLASS

 #endif
--- a/src/Metal/Metal.mm
+++ b/src/Metal/Metal.mm
@ -18,10 +18,13 @@
 */

 #import <Metal/Metal.h>
+#if DARLING_METAL_ENABLED
 #include <indium/indium.hpp>
+#endif
 #import <Metal/MTLDeviceInternal.h>
+#import <Metal/stubs.h>

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 // TODO: add some extension here that MetalKit needs.
 //
--- a/src/MetalKit/MTKView.m
+++ b/src/MetalKit/MTKView.m
@ -23,7 +23,7 @@

@implementation MTKView

-#if __OBJC2__
+#if DARLING_METAL_ENABLED

 {
 	id<MTKViewDelegate> _delegate;
@ -379,6 +379,32 @@

 #else

+@dynamic delegate;
+@dynamic device;
+@dynamic preferredDevice;
+@dynamic colorPixelFormat;
+@dynamic colorspace;
+@dynamic framebufferOnly;
+@dynamic drawableSize;
+@dynamic preferredDrawableSize;
+@dynamic autoResizeDrawable;
+@dynamic clearColor;
+@dynamic depthStencilPixelFormat;
+@dynamic depthStencilAttachmentTextureUsage;
+@dynamic clearDepth;
+@dynamic clearStencil;
+@dynamic sampleCount;
+@dynamic multisampleColorAttachmentTextureUsage;
+@dynamic currentRenderPassDescriptor;
+@dynamic currentDrawable;
+@dynamic depthStencilTexture;
+@dynamic multisampleColorTexture;
+@dynamic preferredFramesPerSecond;
+@dynamic paused;
+@dynamic enableSetNeedsDisplay;
+@dynamic presentsWithTransaction;
+@dynamic depthStencilStorageMode;
+
 MTL_UNSUPPORTED_CLASS

 #endif