Add Editor for Mac impl progress

Source/Engine/Engine/Engine.cpp

@@ -531,6 +531,8 @@ void EngineImpl::InitPaths()
     Globals::MonoPath = Globals::StartupFolder / TEXT("Source/Platforms/Editor/Windows/Mono");
 #elif PLATFORM_LINUX
     Globals::MonoPath = Globals::StartupFolder / TEXT("Source/Platforms/Editor/Linux/Mono");
+#elif PLATFORM_MAC
+    Globals::MonoPath = Globals::StartupFolder / TEXT("Source/Platforms/Editor/Mac/Mono");
 #else
     #error "Please specify the Mono data location for Editor on this platform."
 #endif

Source/Engine/Graphics/Shaders/Cache/ShaderAssetBase.cpp

@@ -270,6 +270,8 @@ bool ShaderAssetBase::LoadShaderCache(ShaderCacheResult& result)
         platformDefine.Name = "PLATFORM_WINDOWS";
 #elif PLATFORM_LINUX
         platformDefine.Name = "PLATFORM_LINUX";
+#elif PLATFORM_MAC
+        platformDefine.Name = "PLATFORM_MAC";
 #else
 #error "Unknown platform."
 #endif

Source/Engine/ShadersCompilation/ShadersCompilation.Build.cs

@@ -53,6 +53,8 @@ public class ShadersCompilation : EngineModule
         case TargetPlatform.Linux:
             options.PrivateDependencies.Add("ShaderCompilerVulkan");
             break;
+        case TargetPlatform.Mac:
+            break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }
 

Source/Engine/Tools/ModelTool/ModelTool.Build.cs

@@ -56,6 +56,7 @@ public class ModelTool : EngineModule
             options.PrivateDependencies.Add("UVAtlas");
             break;
         case TargetPlatform.Linux:
+        case TargetPlatform.Mac:
             break;
         default: throw new InvalidPlatformException(options.Platform.Target);
         }