├── .gitignore ├── .swiftpm └── xcode │ └── xcshareddata │ └── xcschemes │ ├── SkinSmoothingFilter-Package.xcscheme │ └── SkinSmoothingFilter.xcscheme ├── Demo ├── Demo.xcodeproj │ ├── project.pbxproj │ └── project.xcworkspace │ │ ├── contents.xcworkspacedata │ │ └── xcshareddata │ │ ├── IDEWorkspaceChecks.plist │ │ └── swiftpm │ │ └── Package.resolved └── Demo │ ├── Assets.xcassets │ ├── AccentColor.colorset │ │ └── Contents.json │ ├── AppIcon.appiconset │ │ └── Contents.json │ └── Contents.json │ ├── ContentView.swift │ ├── Demo.entitlements │ ├── DemoApp.swift │ └── Preview Content │ └── Preview Assets.xcassets │ └── Contents.json ├── LICENSE ├── Package.swift ├── README.md ├── Sources └── SkinSmoothingFilter │ ├── Shaders.metal │ └── SkinSmoothingFilter.swift ├── Tests └── SkinSmoothingFilterTests │ └── SkinSmoothingFilterTests.swift ├── sample1.JPG └── sample2.JPG /.gitignore: -------------------------------------------------------------------------------- 1 | # Xcode 2 | # 3 | # gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore 4 | 5 | ## User settings 6 | xcuserdata/ 7 | 8 | ## compatibility with Xcode 8 and earlier (ignoring not required starting Xcode 9) 9 | *.xcscmblueprint 10 | *.xccheckout 11 | 12 | ## compatibility with Xcode 3 and earlier (ignoring not required starting Xcode 4) 13 | build/ 14 | DerivedData/ 15 | *.moved-aside 16 | *.pbxuser 17 | !default.pbxuser 18 | *.mode1v3 19 | !default.mode1v3 20 | *.mode2v3 21 | !default.mode2v3 22 | *.perspectivev3 23 | !default.perspectivev3 24 | 25 | ## Obj-C/Swift specific 26 | *.hmap 27 | 28 | ## App packaging 29 | *.ipa 30 | *.dSYM.zip 31 | *.dSYM 32 | 33 | ## Playgrounds 34 | timeline.xctimeline 35 | playground.xcworkspace 36 | 37 | # Swift Package Manager 38 | # 39 | # Add this line if you want to avoid checking in source code from Swift Package Manager dependencies. 40 | # Packages/ 41 | # Package.pins 42 | # Package.resolved 43 | # *.xcodeproj 44 | # 45 | # Xcode automatically generates this directory with a .xcworkspacedata file and xcuserdata 46 | # hence it is not needed unless you have added a package configuration file to your project 47 | # .swiftpm 48 | 49 | .build/ 50 | 51 | # CocoaPods 52 | # 53 | # We recommend against adding the Pods directory to your .gitignore. However 54 | # you should judge for yourself, the pros and cons are mentioned at: 55 | # https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control 56 | # 57 | # Pods/ 58 | # 59 | # Add this line if you want to avoid checking in source code from the Xcode workspace 60 | # *.xcworkspace 61 | 62 | # Carthage 63 | # 64 | # Add this line if you want to avoid checking in source code from Carthage dependencies. 65 | # Carthage/Checkouts 66 | 67 | Carthage/Build/ 68 | 69 | # Accio dependency management 70 | Dependencies/ 71 | .accio/ 72 | 73 | # fastlane 74 | # 75 | # It is recommended to not store the screenshots in the git repo. 76 | # Instead, use fastlane to re-generate the screenshots whenever they are needed. 77 | # For more information about the recommended setup visit: 78 | # https://docs.fastlane.tools/best-practices/source-control/#source-control 79 | 80 | fastlane/report.xml 81 | fastlane/Preview.html 82 | fastlane/screenshots/**/*.png 83 | fastlane/test_output 84 | 85 | # Code Injection 86 | # 87 | # After new code Injection tools there's a generated folder /iOSInjectionProject 88 | # https://github.com/johnno1962/injectionforxcode 89 | 90 | iOSInjectionProject/ 91 | 92 | .DS_Store 93 | /.build 94 | /Packages 95 | xcuserdata/ 96 | DerivedData/ 97 | .swiftpm/configuration/registries.json 98 | .swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata 99 | .netrc 100 | -------------------------------------------------------------------------------- /.swiftpm/xcode/xcshareddata/xcschemes/SkinSmoothingFilter-Package.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 9 | 10 | 16 | 22 | 23 | 24 | 25 | 26 | 32 | 33 | 35 | 41 | 42 | 43 | 44 | 45 | 55 | 56 | 62 | 63 | 65 | 66 | 69 | 70 | 71 | -------------------------------------------------------------------------------- /.swiftpm/xcode/xcshareddata/xcschemes/SkinSmoothingFilter.xcscheme: -------------------------------------------------------------------------------- 1 | 2 | 5 | 9 | 10 | 16 | 22 | 23 | 24 | 25 | 26 | 32 | 33 | 35 | 41 | 42 | 43 | 44 | 45 | 55 | 56 | 62 | 63 | 69 | 70 | 71 | 72 | 74 | 75 | 78 | 79 | 80 | -------------------------------------------------------------------------------- /Demo/Demo.xcodeproj/project.pbxproj: -------------------------------------------------------------------------------- 1 | // !$*UTF8*$! 2 | { 3 | archiveVersion = 1; 4 | classes = { 5 | }; 6 | objectVersion = 56; 7 | objects = { 8 | 9 | /* Begin PBXBuildFile section */ 10 | 045DBAAB2B88C035000DC52B /* SkinSmoothingFilter in Frameworks */ = {isa = PBXBuildFile; productRef = 045DBAAA2B88C035000DC52B /* SkinSmoothingFilter */; }; 11 | 048C9DDE2B7F78780029B9FE /* DemoApp.swift in Sources */ = {isa = PBXBuildFile; fileRef = 048C9DDD2B7F78780029B9FE /* DemoApp.swift */; }; 12 | 048C9DE02B7F78780029B9FE /* ContentView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 048C9DDF2B7F78780029B9FE /* ContentView.swift */; }; 13 | 048C9DE22B7F78790029B9FE /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 048C9DE12B7F78790029B9FE /* Assets.xcassets */; }; 14 | 048C9DE62B7F78790029B9FE /* Preview Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 048C9DE52B7F78790029B9FE /* Preview Assets.xcassets */; }; 15 | /* End PBXBuildFile section */ 16 | 17 | /* Begin PBXFileReference section */ 18 | 045DBAA82B88BF29000DC52B /* Sources */ = {isa = PBXFileReference; lastKnownFileType = folder; name = Sources; path = ../Sources; sourceTree = ""; }; 19 | 048C9DDA2B7F78770029B9FE /* Demo.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Demo.app; sourceTree = BUILT_PRODUCTS_DIR; }; 20 | 048C9DDD2B7F78780029B9FE /* DemoApp.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DemoApp.swift; sourceTree = ""; }; 21 | 048C9DDF2B7F78780029B9FE /* ContentView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ContentView.swift; sourceTree = ""; }; 22 | 048C9DE12B7F78790029B9FE /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = ""; }; 23 | 048C9DE32B7F78790029B9FE /* Demo.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = Demo.entitlements; sourceTree = ""; }; 24 | 048C9DE52B7F78790029B9FE /* Preview Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = "Preview Assets.xcassets"; sourceTree = ""; }; 25 | /* End PBXFileReference section */ 26 | 27 | /* Begin PBXFrameworksBuildPhase section */ 28 | 048C9DD72B7F78770029B9FE /* Frameworks */ = { 29 | isa = PBXFrameworksBuildPhase; 30 | buildActionMask = 2147483647; 31 | files = ( 32 | 045DBAAB2B88C035000DC52B /* SkinSmoothingFilter in Frameworks */, 33 | ); 34 | runOnlyForDeploymentPostprocessing = 0; 35 | }; 36 | /* End PBXFrameworksBuildPhase section */ 37 | 38 | /* Begin PBXGroup section */ 39 | 048C9DD12B7F78770029B9FE = { 40 | isa = PBXGroup; 41 | children = ( 42 | 048C9DDC2B7F78780029B9FE /* Demo */, 43 | 048C9DDB2B7F78770029B9FE /* Products */, 44 | 04F51E712B7F7A9A00DE5D0D /* Frameworks */, 45 | ); 46 | sourceTree = ""; 47 | }; 48 | 048C9DDB2B7F78770029B9FE /* Products */ = { 49 | isa = PBXGroup; 50 | children = ( 51 | 048C9DDA2B7F78770029B9FE /* Demo.app */, 52 | ); 53 | name = Products; 54 | sourceTree = ""; 55 | }; 56 | 048C9DDC2B7F78780029B9FE /* Demo */ = { 57 | isa = PBXGroup; 58 | children = ( 59 | 048C9DDD2B7F78780029B9FE /* DemoApp.swift */, 60 | 048C9DDF2B7F78780029B9FE /* ContentView.swift */, 61 | 048C9DE12B7F78790029B9FE /* Assets.xcassets */, 62 | 048C9DE32B7F78790029B9FE /* Demo.entitlements */, 63 | 048C9DE42B7F78790029B9FE /* Preview Content */, 64 | ); 65 | path = Demo; 66 | sourceTree = ""; 67 | }; 68 | 048C9DE42B7F78790029B9FE /* Preview Content */ = { 69 | isa = PBXGroup; 70 | children = ( 71 | 048C9DE52B7F78790029B9FE /* Preview Assets.xcassets */, 72 | ); 73 | path = "Preview Content"; 74 | sourceTree = ""; 75 | }; 76 | 04F51E712B7F7A9A00DE5D0D /* Frameworks */ = { 77 | isa = PBXGroup; 78 | children = ( 79 | 045DBAA82B88BF29000DC52B /* Sources */, 80 | ); 81 | name = Frameworks; 82 | sourceTree = ""; 83 | }; 84 | /* End PBXGroup section */ 85 | 86 | /* Begin PBXNativeTarget section */ 87 | 048C9DD92B7F78770029B9FE /* Demo */ = { 88 | isa = PBXNativeTarget; 89 | buildConfigurationList = 048C9DE92B7F78790029B9FE /* Build configuration list for PBXNativeTarget "Demo" */; 90 | buildPhases = ( 91 | 048C9DD62B7F78770029B9FE /* Sources */, 92 | 048C9DD72B7F78770029B9FE /* Frameworks */, 93 | 048C9DD82B7F78770029B9FE /* Resources */, 94 | ); 95 | buildRules = ( 96 | ); 97 | dependencies = ( 98 | ); 99 | name = Demo; 100 | packageProductDependencies = ( 101 | 045DBAAA2B88C035000DC52B /* SkinSmoothingFilter */, 102 | ); 103 | productName = Demo; 104 | productReference = 048C9DDA2B7F78770029B9FE /* Demo.app */; 105 | productType = "com.apple.product-type.application"; 106 | }; 107 | /* End PBXNativeTarget section */ 108 | 109 | /* Begin PBXProject section */ 110 | 048C9DD22B7F78770029B9FE /* Project object */ = { 111 | isa = PBXProject; 112 | attributes = { 113 | BuildIndependentTargetsInParallel = 1; 114 | LastSwiftUpdateCheck = 1530; 115 | LastUpgradeCheck = 1530; 116 | TargetAttributes = { 117 | 048C9DD92B7F78770029B9FE = { 118 | CreatedOnToolsVersion = 15.3; 119 | }; 120 | }; 121 | }; 122 | buildConfigurationList = 048C9DD52B7F78770029B9FE /* Build configuration list for PBXProject "Demo" */; 123 | compatibilityVersion = "Xcode 14.0"; 124 | developmentRegion = en; 125 | hasScannedForEncodings = 0; 126 | knownRegions = ( 127 | en, 128 | Base, 129 | ); 130 | mainGroup = 048C9DD12B7F78770029B9FE; 131 | packageReferences = ( 132 | 045DBAA92B88BF6C000DC52B /* XCRemoteSwiftPackageReference "SkinSmoothingFilter" */, 133 | ); 134 | productRefGroup = 048C9DDB2B7F78770029B9FE /* Products */; 135 | projectDirPath = ""; 136 | projectRoot = ""; 137 | targets = ( 138 | 048C9DD92B7F78770029B9FE /* Demo */, 139 | ); 140 | }; 141 | /* End PBXProject section */ 142 | 143 | /* Begin PBXResourcesBuildPhase section */ 144 | 048C9DD82B7F78770029B9FE /* Resources */ = { 145 | isa = PBXResourcesBuildPhase; 146 | buildActionMask = 2147483647; 147 | files = ( 148 | 048C9DE62B7F78790029B9FE /* Preview Assets.xcassets in Resources */, 149 | 048C9DE22B7F78790029B9FE /* Assets.xcassets in Resources */, 150 | ); 151 | runOnlyForDeploymentPostprocessing = 0; 152 | }; 153 | /* End PBXResourcesBuildPhase section */ 154 | 155 | /* Begin PBXSourcesBuildPhase section */ 156 | 048C9DD62B7F78770029B9FE /* Sources */ = { 157 | isa = PBXSourcesBuildPhase; 158 | buildActionMask = 2147483647; 159 | files = ( 160 | 048C9DE02B7F78780029B9FE /* ContentView.swift in Sources */, 161 | 048C9DDE2B7F78780029B9FE /* DemoApp.swift in Sources */, 162 | ); 163 | runOnlyForDeploymentPostprocessing = 0; 164 | }; 165 | /* End PBXSourcesBuildPhase section */ 166 | 167 | /* Begin XCBuildConfiguration section */ 168 | 048C9DE72B7F78790029B9FE /* Debug */ = { 169 | isa = XCBuildConfiguration; 170 | buildSettings = { 171 | ALWAYS_SEARCH_USER_PATHS = NO; 172 | ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES; 173 | CLANG_ANALYZER_NONNULL = YES; 174 | CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE; 175 | CLANG_CXX_LANGUAGE_STANDARD = "gnu++20"; 176 | CLANG_ENABLE_MODULES = YES; 177 | CLANG_ENABLE_OBJC_ARC = YES; 178 | CLANG_ENABLE_OBJC_WEAK = YES; 179 | CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES; 180 | CLANG_WARN_BOOL_CONVERSION = YES; 181 | CLANG_WARN_COMMA = YES; 182 | CLANG_WARN_CONSTANT_CONVERSION = YES; 183 | CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES; 184 | CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR; 185 | CLANG_WARN_DOCUMENTATION_COMMENTS = YES; 186 | CLANG_WARN_EMPTY_BODY = YES; 187 | CLANG_WARN_ENUM_CONVERSION = YES; 188 | CLANG_WARN_INFINITE_RECURSION = YES; 189 | CLANG_WARN_INT_CONVERSION = YES; 190 | CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES; 191 | CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES; 192 | CLANG_WARN_OBJC_LITERAL_CONVERSION = YES; 193 | CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR; 194 | CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES; 195 | CLANG_WARN_RANGE_LOOP_ANALYSIS = YES; 196 | CLANG_WARN_STRICT_PROTOTYPES = YES; 197 | CLANG_WARN_SUSPICIOUS_MOVE = YES; 198 | CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE; 199 | CLANG_WARN_UNREACHABLE_CODE = YES; 200 | CLANG_WARN__DUPLICATE_METHOD_MATCH = YES; 201 | COPY_PHASE_STRIP = NO; 202 | DEBUG_INFORMATION_FORMAT = dwarf; 203 | ENABLE_STRICT_OBJC_MSGSEND = YES; 204 | ENABLE_TESTABILITY = YES; 205 | ENABLE_USER_SCRIPT_SANDBOXING = YES; 206 | GCC_C_LANGUAGE_STANDARD = gnu17; 207 | GCC_DYNAMIC_NO_PIC = NO; 208 | GCC_NO_COMMON_BLOCKS = YES; 209 | GCC_OPTIMIZATION_LEVEL = 0; 210 | GCC_PREPROCESSOR_DEFINITIONS = ( 211 | "DEBUG=1", 212 | "$(inherited)", 213 | ); 214 | GCC_WARN_64_TO_32_BIT_CONVERSION = YES; 215 | GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; 216 | GCC_WARN_UNDECLARED_SELECTOR = YES; 217 | GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; 218 | GCC_WARN_UNUSED_FUNCTION = YES; 219 | GCC_WARN_UNUSED_VARIABLE = YES; 220 | LOCALIZATION_PREFERS_STRING_CATALOGS = YES; 221 | MTL_COMPILER_FLAGS = "-fcikernel"; 222 | MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE; 223 | MTL_FAST_MATH = YES; 224 | ONLY_ACTIVE_ARCH = YES; 225 | SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)"; 226 | SWIFT_OPTIMIZATION_LEVEL = "-Onone"; 227 | }; 228 | name = Debug; 229 | }; 230 | 048C9DE82B7F78790029B9FE /* Release */ = { 231 | isa = XCBuildConfiguration; 232 | buildSettings = { 233 | ALWAYS_SEARCH_USER_PATHS = NO; 234 | ASSETCATALOG_COMPILER_GENERATE_SWIFT_ASSET_SYMBOL_EXTENSIONS = YES; 235 | CLANG_ANALYZER_NONNULL = YES; 236 | CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE; 237 | CLANG_CXX_LANGUAGE_STANDARD = "gnu++20"; 238 | CLANG_ENABLE_MODULES = YES; 239 | CLANG_ENABLE_OBJC_ARC = YES; 240 | CLANG_ENABLE_OBJC_WEAK = YES; 241 | CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES; 242 | CLANG_WARN_BOOL_CONVERSION = YES; 243 | CLANG_WARN_COMMA = YES; 244 | CLANG_WARN_CONSTANT_CONVERSION = YES; 245 | CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES; 246 | CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR; 247 | CLANG_WARN_DOCUMENTATION_COMMENTS = YES; 248 | CLANG_WARN_EMPTY_BODY = YES; 249 | CLANG_WARN_ENUM_CONVERSION = YES; 250 | CLANG_WARN_INFINITE_RECURSION = YES; 251 | CLANG_WARN_INT_CONVERSION = YES; 252 | CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES; 253 | CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES; 254 | CLANG_WARN_OBJC_LITERAL_CONVERSION = YES; 255 | CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR; 256 | CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES; 257 | CLANG_WARN_RANGE_LOOP_ANALYSIS = YES; 258 | CLANG_WARN_STRICT_PROTOTYPES = YES; 259 | CLANG_WARN_SUSPICIOUS_MOVE = YES; 260 | CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE; 261 | CLANG_WARN_UNREACHABLE_CODE = YES; 262 | CLANG_WARN__DUPLICATE_METHOD_MATCH = YES; 263 | COPY_PHASE_STRIP = NO; 264 | DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym"; 265 | ENABLE_NS_ASSERTIONS = NO; 266 | ENABLE_STRICT_OBJC_MSGSEND = YES; 267 | ENABLE_USER_SCRIPT_SANDBOXING = YES; 268 | GCC_C_LANGUAGE_STANDARD = gnu17; 269 | GCC_NO_COMMON_BLOCKS = YES; 270 | GCC_WARN_64_TO_32_BIT_CONVERSION = YES; 271 | GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; 272 | GCC_WARN_UNDECLARED_SELECTOR = YES; 273 | GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; 274 | GCC_WARN_UNUSED_FUNCTION = YES; 275 | GCC_WARN_UNUSED_VARIABLE = YES; 276 | LOCALIZATION_PREFERS_STRING_CATALOGS = YES; 277 | MTL_COMPILER_FLAGS = "-fcikernel"; 278 | MTL_ENABLE_DEBUG_INFO = NO; 279 | MTL_FAST_MATH = YES; 280 | SWIFT_COMPILATION_MODE = wholemodule; 281 | }; 282 | name = Release; 283 | }; 284 | 048C9DEA2B7F78790029B9FE /* Debug */ = { 285 | isa = XCBuildConfiguration; 286 | buildSettings = { 287 | ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon; 288 | ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor; 289 | CODE_SIGN_ENTITLEMENTS = Demo/Demo.entitlements; 290 | CODE_SIGN_STYLE = Automatic; 291 | CURRENT_PROJECT_VERSION = 1; 292 | DEVELOPMENT_ASSET_PATHS = ""; 293 | DEVELOPMENT_TEAM = 64T4PJ8WCZ; 294 | ENABLE_HARDENED_RUNTIME = YES; 295 | ENABLE_PREVIEWS = YES; 296 | GENERATE_INFOPLIST_FILE = YES; 297 | INFOPLIST_KEY_NSPhotoLibraryAddUsageDescription = "Used for saving photos."; 298 | "INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphoneos*]" = YES; 299 | "INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphonesimulator*]" = YES; 300 | "INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphoneos*]" = YES; 301 | "INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphonesimulator*]" = YES; 302 | "INFOPLIST_KEY_UILaunchScreen_Generation[sdk=iphoneos*]" = YES; 303 | "INFOPLIST_KEY_UILaunchScreen_Generation[sdk=iphonesimulator*]" = YES; 304 | "INFOPLIST_KEY_UIStatusBarStyle[sdk=iphoneos*]" = UIStatusBarStyleDefault; 305 | "INFOPLIST_KEY_UIStatusBarStyle[sdk=iphonesimulator*]" = UIStatusBarStyleDefault; 306 | INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight"; 307 | INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight"; 308 | IPHONEOS_DEPLOYMENT_TARGET = 15.0; 309 | LD_RUNPATH_SEARCH_PATHS = "@executable_path/Frameworks"; 310 | "LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks"; 311 | MACOSX_DEPLOYMENT_TARGET = 14.2; 312 | MARKETING_VERSION = 1.0; 313 | PRODUCT_BUNDLE_IDENTIFIER = com.shima.apps.Demo; 314 | PRODUCT_NAME = "$(TARGET_NAME)"; 315 | SDKROOT = auto; 316 | SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx"; 317 | SWIFT_EMIT_LOC_STRINGS = YES; 318 | SWIFT_VERSION = 5.0; 319 | TARGETED_DEVICE_FAMILY = "1,2"; 320 | }; 321 | name = Debug; 322 | }; 323 | 048C9DEB2B7F78790029B9FE /* Release */ = { 324 | isa = XCBuildConfiguration; 325 | buildSettings = { 326 | ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon; 327 | ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor; 328 | CODE_SIGN_ENTITLEMENTS = Demo/Demo.entitlements; 329 | CODE_SIGN_STYLE = Automatic; 330 | CURRENT_PROJECT_VERSION = 1; 331 | DEVELOPMENT_ASSET_PATHS = ""; 332 | DEVELOPMENT_TEAM = 64T4PJ8WCZ; 333 | ENABLE_HARDENED_RUNTIME = YES; 334 | ENABLE_PREVIEWS = YES; 335 | GENERATE_INFOPLIST_FILE = YES; 336 | INFOPLIST_KEY_NSPhotoLibraryAddUsageDescription = "Used for saving photos."; 337 | "INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphoneos*]" = YES; 338 | "INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphonesimulator*]" = YES; 339 | "INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphoneos*]" = YES; 340 | "INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphonesimulator*]" = YES; 341 | "INFOPLIST_KEY_UILaunchScreen_Generation[sdk=iphoneos*]" = YES; 342 | "INFOPLIST_KEY_UILaunchScreen_Generation[sdk=iphonesimulator*]" = YES; 343 | "INFOPLIST_KEY_UIStatusBarStyle[sdk=iphoneos*]" = UIStatusBarStyleDefault; 344 | "INFOPLIST_KEY_UIStatusBarStyle[sdk=iphonesimulator*]" = UIStatusBarStyleDefault; 345 | INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight"; 346 | INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight"; 347 | IPHONEOS_DEPLOYMENT_TARGET = 15.0; 348 | LD_RUNPATH_SEARCH_PATHS = "@executable_path/Frameworks"; 349 | "LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks"; 350 | MACOSX_DEPLOYMENT_TARGET = 14.2; 351 | MARKETING_VERSION = 1.0; 352 | PRODUCT_BUNDLE_IDENTIFIER = com.shima.apps.Demo; 353 | PRODUCT_NAME = "$(TARGET_NAME)"; 354 | SDKROOT = auto; 355 | SUPPORTED_PLATFORMS = "iphoneos iphonesimulator macosx"; 356 | SWIFT_EMIT_LOC_STRINGS = YES; 357 | SWIFT_VERSION = 5.0; 358 | TARGETED_DEVICE_FAMILY = "1,2"; 359 | }; 360 | name = Release; 361 | }; 362 | /* End XCBuildConfiguration section */ 363 | 364 | /* Begin XCConfigurationList section */ 365 | 048C9DD52B7F78770029B9FE /* Build configuration list for PBXProject "Demo" */ = { 366 | isa = XCConfigurationList; 367 | buildConfigurations = ( 368 | 048C9DE72B7F78790029B9FE /* Debug */, 369 | 048C9DE82B7F78790029B9FE /* Release */, 370 | ); 371 | defaultConfigurationIsVisible = 0; 372 | defaultConfigurationName = Release; 373 | }; 374 | 048C9DE92B7F78790029B9FE /* Build configuration list for PBXNativeTarget "Demo" */ = { 375 | isa = XCConfigurationList; 376 | buildConfigurations = ( 377 | 048C9DEA2B7F78790029B9FE /* Debug */, 378 | 048C9DEB2B7F78790029B9FE /* Release */, 379 | ); 380 | defaultConfigurationIsVisible = 0; 381 | defaultConfigurationName = Release; 382 | }; 383 | /* End XCConfigurationList section */ 384 | 385 | /* Begin XCRemoteSwiftPackageReference section */ 386 | 045DBAA92B88BF6C000DC52B /* XCRemoteSwiftPackageReference "SkinSmoothingFilter" */ = { 387 | isa = XCRemoteSwiftPackageReference; 388 | repositoryURL = "https://github.com/shima11/SkinSmoothingFilter"; 389 | requirement = { 390 | branch = main; 391 | kind = branch; 392 | }; 393 | }; 394 | /* End XCRemoteSwiftPackageReference section */ 395 | 396 | /* Begin XCSwiftPackageProductDependency section */ 397 | 045DBAAA2B88C035000DC52B /* SkinSmoothingFilter */ = { 398 | isa = XCSwiftPackageProductDependency; 399 | package = 045DBAA92B88BF6C000DC52B /* XCRemoteSwiftPackageReference "SkinSmoothingFilter" */; 400 | productName = SkinSmoothingFilter; 401 | }; 402 | /* End XCSwiftPackageProductDependency section */ 403 | }; 404 | rootObject = 048C9DD22B7F78770029B9FE /* Project object */; 405 | } 406 | -------------------------------------------------------------------------------- /Demo/Demo.xcodeproj/project.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /Demo/Demo.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | IDEDidComputeMac32BitWarning 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /Demo/Demo.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved: -------------------------------------------------------------------------------- 1 | { 2 | "originHash" : "6a197446f8ae23b3f56abea04d7c1c91a4d1fbcd3b7f75f49273fd0a689a4b07", 3 | "pins" : [ 4 | { 5 | "identity" : "skinsmoothingfilter", 6 | "kind" : "remoteSourceControl", 7 | "location" : "https://github.com/shima11/SkinSmoothingFilter", 8 | "state" : { 9 | "branch" : "main", 10 | "revision" : "ce14eb44def22bbe3430176fce87dffbc60e1978" 11 | } 12 | } 13 | ], 14 | "version" : 3 15 | } 16 | -------------------------------------------------------------------------------- /Demo/Demo/Assets.xcassets/AccentColor.colorset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "colors" : [ 3 | { 4 | "idiom" : "universal" 5 | } 6 | ], 7 | "info" : { 8 | "author" : "xcode", 9 | "version" : 1 10 | } 11 | } 12 | -------------------------------------------------------------------------------- /Demo/Demo/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "idiom" : "universal", 5 | "platform" : "ios", 6 | "size" : "1024x1024" 7 | }, 8 | { 9 | "idiom" : "mac", 10 | "scale" : "1x", 11 | "size" : "16x16" 12 | }, 13 | { 14 | "idiom" : "mac", 15 | "scale" : "2x", 16 | "size" : "16x16" 17 | }, 18 | { 19 | "idiom" : "mac", 20 | "scale" : "1x", 21 | "size" : "32x32" 22 | }, 23 | { 24 | "idiom" : "mac", 25 | "scale" : "2x", 26 | "size" : "32x32" 27 | }, 28 | { 29 | "idiom" : "mac", 30 | "scale" : "1x", 31 | "size" : "128x128" 32 | }, 33 | { 34 | "idiom" : "mac", 35 | "scale" : "2x", 36 | "size" : "128x128" 37 | }, 38 | { 39 | "idiom" : "mac", 40 | "scale" : "1x", 41 | "size" : "256x256" 42 | }, 43 | { 44 | "idiom" : "mac", 45 | "scale" : "2x", 46 | "size" : "256x256" 47 | }, 48 | { 49 | "idiom" : "mac", 50 | "scale" : "1x", 51 | "size" : "512x512" 52 | }, 53 | { 54 | "idiom" : "mac", 55 | "scale" : "2x", 56 | "size" : "512x512" 57 | } 58 | ], 59 | "info" : { 60 | "author" : "xcode", 61 | "version" : 1 62 | } 63 | } 64 | -------------------------------------------------------------------------------- /Demo/Demo/Assets.xcassets/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "info" : { 3 | "author" : "xcode", 4 | "version" : 1 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /Demo/Demo/ContentView.swift: -------------------------------------------------------------------------------- 1 | import Foundation 2 | import SwiftUI 3 | import SkinSmoothingFilter 4 | import PhotosUI 5 | 6 | @available(iOS 16.0, *) 7 | struct ContentView: View { 8 | 9 | @State var selectedPhotoItem: PhotosPickerItem? = nil 10 | @State var originalImage: UIImage? = nil 11 | @State var inputAmount: Double = 0.5 12 | @State var inputSharpness: Double = 0.3 13 | @State var inputRadius: Double = 8.0 14 | @State var edittedImage: UIImage? = nil 15 | 16 | @State var onPress: Bool = false 17 | 18 | var body: some View { 19 | NavigationView { 20 | ScrollView { 21 | VStack { 22 | 23 | if let originalImage = originalImage { 24 | Image(uiImage: originalImage) 25 | .resizable() 26 | .scaledToFit() 27 | .overlay( 28 | ZStack { 29 | if let edittedImage = edittedImage { 30 | Image(uiImage: edittedImage) 31 | .resizable() 32 | .scaledToFit() 33 | } 34 | } 35 | .opacity(onPress ? 0 : 1) 36 | ) 37 | .gesture( 38 | DragGesture(minimumDistance: 0) 39 | .onChanged { _ in 40 | onPress = true 41 | } 42 | .onEnded { _ in 43 | onPress = false 44 | } 45 | ) 46 | } 47 | 48 | if let edittedImage = edittedImage { 49 | Button("Save") { 50 | save(image: edittedImage) 51 | } 52 | } 53 | 54 | VStack { 55 | Text("amount: \(inputAmount)") 56 | Slider(value: $inputAmount, in: 0...5, step: 0.01) 57 | Text("sharpness: \(inputSharpness)") 58 | Slider(value: $inputSharpness, in: 0...5, step: 0.01) 59 | Text("radius: \(inputRadius)") 60 | Slider(value: $inputRadius, in: 0...15, step: 0.1) 61 | } 62 | .padding(.top, 24) 63 | .padding(.horizontal, 24) 64 | 65 | } 66 | .onChange(of: originalImage, perform: { _ in 67 | perform() 68 | }) 69 | .onChange(of: [inputAmount, inputSharpness, inputRadius], perform: { _ in 70 | perform() 71 | }) 72 | .onChange(of: selectedPhotoItem) { selectedPhotoItem in 73 | Task { 74 | do { 75 | if let data = try await selectedPhotoItem?.loadTransferable(type: Data.self) { 76 | if let uiImage = UIImage(data: data) { 77 | originalImage = uiImage 78 | } 79 | } 80 | } catch { 81 | print(error) 82 | } 83 | } 84 | } 85 | } 86 | .navigationTitle("SkinSmoothingFilter Demo") 87 | .navigationBarTitleDisplayMode(.inline) 88 | .toolbar { 89 | ToolbarItem(placement: .topBarTrailing) { 90 | PhotosPicker(selection: $selectedPhotoItem, matching: .images) { 91 | Image(systemName: "photo") 92 | } 93 | } 94 | } 95 | } 96 | } 97 | 98 | private func perform() { 99 | guard let uiImage = originalImage else { return } 100 | Task { 101 | let ciImage = CIImage(image: uiImage)! 102 | 103 | let filter = SkinSmoothingFilter() 104 | filter.inputImage = ciImage 105 | filter.inputAmount = inputAmount 106 | filter.inputSharpness = inputSharpness 107 | filter.inputRadius = inputRadius 108 | 109 | if let result = filter.outputImage?.toUIImage() { 110 | edittedImage = result 111 | } 112 | } 113 | } 114 | 115 | private func save(image: UIImage) { 116 | UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil) 117 | } 118 | } 119 | 120 | extension CIImage { 121 | func toCGImage() -> CGImage? { 122 | let context = { CIContext(options: nil) }() 123 | return context.createCGImage(self, from: self.extent) 124 | } 125 | 126 | func toUIImage() -> UIImage? { 127 | guard let cgImage = self.toCGImage() else { return nil } 128 | return UIImage(cgImage: cgImage) 129 | } 130 | } 131 | 132 | #Preview { 133 | if #available(iOS 16.0, *) { 134 | ContentView() 135 | } else { 136 | EmptyView() 137 | } 138 | } 139 | -------------------------------------------------------------------------------- /Demo/Demo/Demo.entitlements: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | com.apple.security.app-sandbox 6 | 7 | com.apple.security.files.user-selected.read-only 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /Demo/Demo/DemoApp.swift: -------------------------------------------------------------------------------- 1 | // 2 | // DemoApp.swift 3 | // Demo 4 | // 5 | // Created by Jinsei Shima on 2024/02/16. 6 | // 7 | 8 | import SwiftUI 9 | 10 | @main 11 | struct DemoApp: App { 12 | var body: some Scene { 13 | WindowGroup { 14 | if #available(iOS 16.0, *) { 15 | ContentView() 16 | } else { 17 | Text("WIP") 18 | } 19 | } 20 | } 21 | } 22 | -------------------------------------------------------------------------------- /Demo/Demo/Preview Content/Preview Assets.xcassets/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "info" : { 3 | "author" : "xcode", 4 | "version" : 1 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2024 shima 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /Package.swift: -------------------------------------------------------------------------------- 1 | // swift-tools-version: 5.10 2 | // The swift-tools-version declares the minimum version of Swift required to build this package. 3 | 4 | import PackageDescription 5 | 6 | let package = Package( 7 | name: "SkinSmoothingFilter", 8 | platforms: [ 9 | .iOS(.v15), 10 | .macOS(.v11), 11 | ], 12 | products: [ 13 | .library( 14 | name: "SkinSmoothingFilter", 15 | targets: ["SkinSmoothingFilter"] 16 | ), 17 | ], 18 | targets: [ 19 | .target( 20 | name: "SkinSmoothingFilter" 21 | ), 22 | .testTarget( 23 | name: "SkinSmoothingFilterTests", 24 | dependencies: ["SkinSmoothingFilter"] 25 | ), 26 | ] 27 | ) 28 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # SkinSmoothingFilter 2 | 3 | A lightweight SkinSmoothing Filter using Metal and CoreImage. 4 | 5 | | Before | After | 6 | | ------ | ----- | 7 | | ![Before](sample1.JPG) | ![After](sample2.JPG) | 8 | 9 | 10 | # Requirements 11 | 12 | iOS 15+, macOS 11+ 13 | 14 | # Installation 15 | 16 | You can add SkinSmoothingFilter to your project via Swift Package Manager by adding the following to your `Package.swift` file: 17 | 18 | ```swift 19 | dependencies: [ 20 | .package(url: "https://github.com/shima11/SkinSmoothingFilter.git", .upToNextMajor(from: "1.0.0")) 21 | ] 22 | ``` 23 | 24 | # Usage 25 | 26 | To use the SkinSmoothingFilter, you first need to import the package into your project: 27 | 28 | ```swift 29 | import SkinSmoothingFilter 30 | ``` 31 | 32 | Then, create an instance of SkinSmoothingFilter, set your desired parameters, and process your images like so: 33 | 34 | ```swift 35 | let filter = SkinSmoothingFilter() 36 | filter.inputImage = ciImage // Your input CIImage 37 | filter.inputAmount = inputAmount // Smoothing amount 38 | filter.inputSharpness = inputSharpness // Image sharpness 39 | filter.inputRadius = inputRadius // Blur radius 40 | 41 | let result = filter.outputImage // Processed CIImage 42 | ``` 43 | 44 | # Contributing 45 | 46 | Contributions are welcome! Please feel free to submit a pull request or open an issue if you have any ideas, bug reports, or suggestions. 47 | 48 | # License 49 | 50 | SkinSmoothingFilter is available under the MIT license. See the LICENSE file for more info. 51 | -------------------------------------------------------------------------------- /Sources/SkinSmoothingFilter/Shaders.metal: -------------------------------------------------------------------------------- 1 | 2 | #include 3 | #include 4 | using namespace metal; 5 | 6 | [[stitchable]] float4 highpass(coreimage::sample_t image, coreimage::sample_t blurredImage) { 7 | return float4(float3(image.rgb - blurredImage.rgb) + 0.5, image.a); 8 | } 9 | 10 | float overlayBlend(float base, float blend) { 11 | return base < 0.5 ? (2.0 * base * blend) : (1.0 - 2.0 * (1.0 - base) * (1.0 - blend)); 12 | } 13 | 14 | [[stitchable]] float4 greenBlueOverlayBlendKernel(coreimage::sample_t image) { 15 | 16 | float green = image.g; 17 | float blue = image.b; 18 | 19 | float blendedGreen = overlayBlend(green, green); 20 | float blendedBlue = overlayBlend(blue, blue); 21 | 22 | return float4(0, blendedGreen, blendedBlue, image.a); 23 | } 24 | -------------------------------------------------------------------------------- /Sources/SkinSmoothingFilter/SkinSmoothingFilter.swift: -------------------------------------------------------------------------------- 1 | import Foundation 2 | import CoreImage 3 | 4 | public final class SkinSmoothingFilter: CIFilter { 5 | 6 | public var inputImage: CIImage? 7 | public var inputAmount: Double = 0.5 8 | public var inputSharpness: Double = 0.3 9 | public var inputRadius: Double = 8.0 10 | 11 | override public var outputImage: CIImage? { 12 | guard let inputImage = self.inputImage else { return nil } 13 | 14 | let colorFilter = ColorOverlayBlendFilter() 15 | colorFilter.inputImage = inputImage 16 | 17 | let highpassFilter = HighpassFilter() 18 | highpassFilter.inputImage = colorFilter.outputImage 19 | highpassFilter.inputAmount = inputRadius 20 | 21 | let hardLightBlendFilter1 = CIFilter(name: "CIHardLightBlendMode")! 22 | hardLightBlendFilter1.setValue(highpassFilter.outputImage, forKey: kCIInputImageKey) 23 | hardLightBlendFilter1.setValue(highpassFilter.outputImage, forKey: kCIInputBackgroundImageKey) 24 | 25 | let hardLightBlendFilter2 = CIFilter(name: "CIHardLightBlendMode")! 26 | hardLightBlendFilter2.setValue(hardLightBlendFilter1.outputImage, forKey: kCIInputImageKey) 27 | hardLightBlendFilter2.setValue(hardLightBlendFilter1.outputImage, forKey: kCIInputBackgroundImageKey) 28 | 29 | let hardLightBlendFilter3 = CIFilter(name: "CIHardLightBlendMode")! 30 | hardLightBlendFilter3.setValue(hardLightBlendFilter2.outputImage, forKey: kCIInputImageKey) 31 | hardLightBlendFilter3.setValue(hardLightBlendFilter2.outputImage, forKey: kCIInputBackgroundImageKey) 32 | 33 | let toneFilter = CIFilter(name: "CIToneCurve")! 34 | toneFilter.setValue(inputImage, forKey: kCIInputImageKey) 35 | toneFilter.setValue(CIVector(x: 0.0, y: 0), forKey: "inputPoint0") 36 | toneFilter.setValue(CIVector(x: 120/255.0, y: 146/255.0), forKey: "inputPoint1") 37 | toneFilter.setValue(CIVector(x: 1.0, y: 1.0), forKey: "inputPoint2") 38 | 39 | let blendWithMaskFilter = CIFilter(name: "CIBlendWithMask")! 40 | blendWithMaskFilter.setValue(inputImage, forKey: kCIInputImageKey) 41 | blendWithMaskFilter.setValue(toneFilter.outputImage, forKey: kCIInputBackgroundImageKey) 42 | blendWithMaskFilter.setValue(hardLightBlendFilter3.outputImage, forKey: kCIInputMaskImageKey) 43 | 44 | let sharpenFilter = CIFilter(name: "CISharpenLuminance")! 45 | sharpenFilter.setValue(inputSharpness*inputAmount, forKey: kCIInputSharpnessKey) 46 | sharpenFilter.setValue(blendWithMaskFilter.outputImage, forKey: kCIInputImageKey) 47 | 48 | return sharpenFilter.outputImage 49 | } 50 | } 51 | 52 | final class ColorOverlayBlendFilter: CIFilter { 53 | 54 | var inputImage: CIImage? 55 | 56 | override var outputImage : CIImage? { 57 | guard let input = inputImage else { 58 | return nil 59 | } 60 | 61 | let ciImage = Self.kernel.apply( 62 | extent: input.extent, 63 | roiCallback: { index, rect in 64 | return rect 65 | }, 66 | arguments: [input] 67 | ) 68 | return ciImage 69 | } 70 | 71 | private static var kernel: CIKernel = { () -> CIKernel in 72 | 73 | let url = Bundle.module.url( 74 | forResource: "default", 75 | withExtension: "metallib" 76 | )! 77 | 78 | let data = try! Data(contentsOf: url) 79 | let kernel = try! CIColorKernel( 80 | functionName: "greenBlueOverlayBlendKernel", 81 | fromMetalLibraryData: data 82 | ) 83 | return kernel 84 | }() 85 | 86 | } 87 | 88 | final class HighpassFilter: CIFilter { 89 | var inputImage: CIImage? 90 | var blurInputImage: CIImage? 91 | var inputAmount: Double = 5.0 92 | 93 | override public var outputImage: CIImage? { 94 | guard let inputImage = self.inputImage else { 95 | return nil 96 | } 97 | let blurInputImage = self.blurInputImage ?? makeBluredImage(from: inputImage) 98 | guard let highpassKernel = HighpassFilter.kernel else { 99 | return nil 100 | } 101 | return highpassKernel.apply(extent: inputImage.extent, arguments: [inputImage, blurInputImage]) 102 | } 103 | 104 | private func makeBluredImage(from inputImage: CIImage) -> CIImage { 105 | return inputImage.clampedToExtent().applyingGaussianBlur(sigma: inputAmount).cropped(to: inputImage.extent) 106 | } 107 | 108 | private static var kernel: CIColorKernel? { 109 | guard let url = Bundle.module.url(forResource: "default", withExtension: "metallib") else { return nil } 110 | guard let data = try? Data(contentsOf: url) else { return nil } 111 | return try? CIColorKernel(functionName: "highpass", fromMetalLibraryData: data) 112 | } 113 | } 114 | -------------------------------------------------------------------------------- /Tests/SkinSmoothingFilterTests/SkinSmoothingFilterTests.swift: -------------------------------------------------------------------------------- 1 | import XCTest 2 | @testable import SkinSmoothingFilter 3 | 4 | final class SkinSmoothingFilterTests: XCTestCase { 5 | func testExample() throws { 6 | // XCTest Documentation 7 | // https://developer.apple.com/documentation/xctest 8 | 9 | // Defining Test Cases and Test Methods 10 | // https://developer.apple.com/documentation/xctest/defining_test_cases_and_test_methods 11 | } 12 | } 13 | -------------------------------------------------------------------------------- /sample1.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shima11/SkinSmoothingFilter/42875d65aa2f0b14e6d492a7b988fde9fcc51e3f/sample1.JPG -------------------------------------------------------------------------------- /sample2.JPG: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shima11/SkinSmoothingFilter/42875d65aa2f0b14e6d492a7b988fde9fcc51e3f/sample2.JPG --------------------------------------------------------------------------------