CMake: Add metal feature to angle port

Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/CMakeLists.txt

@@ -7,7 +7,7 @@ include(WebKitCommon-minimal)
 set(ANGLE_FRAMEWORK_HEADERS_DIR "${CMAKE_BINARY_DIR}/ANGLE/headers")
 
 set(USE_ANGLE_EGL ON)
-if (NOT WINDOWS_STORE)
+if (NOT WINDOWS_STORE AND NOT USE_METAL)
     set(USE_OPENGL ON)
 endif()
 

Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/PlatformMac.cmake

@@ -43,7 +43,7 @@ if(USE_OPENGL)
     list(APPEND ANGLE_DEFINITIONS ANGLE_ENABLE_GLSL ANGLE_ENABLE_GL_DESKTOP_BACKEND ANGLE_ENABLE_APPLE_WORKAROUNDS)
 endif()
 
-if(USE_ANGLE_EGL OR ENABLE_WEBGL)
+if(USE_OPENGL OR ENABLE_WEBGL)
     list(APPEND ANGLE_SOURCES
         ${gl_backend_sources}
 

Meta/CMake/vcpkg/overlay-ports/angle/portfile.cmake

@@ -30,6 +30,11 @@ else()
   set(ANGLE_BUILDSYSTEM_PORT "Linux")
 endif()
 
+set(USE_METAL OFF)
+if ("metal" IN_LIST FEATURES)
+    set(USE_METAL ON)
+endif()
+
 # chromium/7067
 set(ANGLE_COMMIT 48103cb2f2b292cb50cc5a29546b358b2e47fd29)
 set(ANGLE_VERSION 7085)
@@ -169,6 +174,7 @@ vcpkg_cmake_configure(
         "-DPORT=${ANGLE_BUILDSYSTEM_PORT}"
         "-DANGLE_USE_D3D11_COMPOSITOR_NATIVE_WINDOW=${ANGLE_USE_D3D11_COMPOSITOR_NATIVE_WINDOW}"
         "-DVCPKG_TARGET_IS_WINDOWS=${VCPKG_TARGET_IS_WINDOWS}"
+        "-DUSE_METAL=${USE_METAL}"
 )
 
 vcpkg_cmake_install()

Meta/CMake/vcpkg/overlay-ports/angle/vcpkg.json

@@ -36,5 +36,11 @@
       "host": true
     },
     "zlib"
-  ]
+  ],
+  "features": {
+    "metal": {
+      "description": "Metal support for angle",
+      "supports": "ios, osx"
+    }
+  }
 }