From 41dbdbc8166d4720c190beb74b75d8e417d8ac39 Mon Sep 17 00:00:00 2001
From: Andrew Kaster <andrew@ladybird.org>
Date: Fri, 20 Dec 2024 11:26:35 -0700
Subject: [PATCH] CMake: Add metal feature to angle port

---
 .../overlay-ports/angle/cmake-buildsystem/CMakeLists.txt  | 2 +-
 .../angle/cmake-buildsystem/PlatformMac.cmake             | 2 +-
 Meta/CMake/vcpkg/overlay-ports/angle/portfile.cmake       | 6 ++++++
 Meta/CMake/vcpkg/overlay-ports/angle/vcpkg.json           | 8 +++++++-
 4 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/CMakeLists.txt b/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/CMakeLists.txt
index bdffad91c38..e3129c6eb6f 100644
--- a/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/CMakeLists.txt
+++ b/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()
 
diff --git a/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/PlatformMac.cmake b/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/PlatformMac.cmake
index 6ba6ee72f70..2691ce61bf1 100644
--- a/Meta/CMake/vcpkg/overlay-ports/angle/cmake-buildsystem/PlatformMac.cmake
+++ b/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}
 
diff --git a/Meta/CMake/vcpkg/overlay-ports/angle/portfile.cmake b/Meta/CMake/vcpkg/overlay-ports/angle/portfile.cmake
index aed9e4b4564..5e5a54d04c7 100644
--- a/Meta/CMake/vcpkg/overlay-ports/angle/portfile.cmake
+++ b/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()
diff --git a/Meta/CMake/vcpkg/overlay-ports/angle/vcpkg.json b/Meta/CMake/vcpkg/overlay-ports/angle/vcpkg.json
index 88b558589b0..1a98457e066 100644
--- a/Meta/CMake/vcpkg/overlay-ports/angle/vcpkg.json
+++ b/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"
+    }
+  }
 }