Bump to Swift 6.1 toolchain

Author: Kyle-Ye

.github/workflows/compatibility_tests.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         include:
           - os: macos-15
-            xcode-version: "16.0"   # Swift 6.0
+            xcode-version: "16.3"   # Swift 6.1
     runs-on: ${{ matrix.os }}
     env:
       OPENBOX_WERROR: 1

.github/workflows/ios.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-15]
-        xcode-version: ["16.0"]   # Swift 6.0
+        xcode-version: ["16.3"]   # Swift 6.1
         ios-version: ["18.0"]
         include:
           - ios-version: "18.0"

.github/workflows/macos.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-15]
-        xcode-version: [16.0]   # Swift 6.0
+        xcode-version: [16.3]   # Swift 6.1
     runs-on: ${{ matrix.os }}
     env:
       OPENBOX_WERROR: 1

.github/workflows/ubuntu.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        swift_version: ["6.0"]
+        swift_version: ["6.1"]
     runs-on: ubuntu-22.04
     env:
       OPENBOX_WERROR: 1

README.md

@@ -12,19 +12,25 @@ RenderBox is a high performance rendering engine written in C++.
 
 And it powers the underlying rendering of SwiftUI.
 
+The project is for the following purposes:
+- Add RB support for non-Apple platform (eg. Linux, WASI and Windows)
+- Diagnose and debug RB issues on Apple platform
+
+Currently, this project is in early development.
+
+## Build
+
+The current suggested toolchain to build the project is Swift 6.1 / Xcode 16.3.
+
+## Supported platforms
+
 | **CI Status** |
 |---|
 |[![Compatibility tests](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/compatibility_tests.yml/badge.svg)](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/compatibility_tests.yml)|
 |[![macOS](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/macos.yml/badge.svg)](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/macos.yml)|
 |[![iOS](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/ios.yml/badge.svg)](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/ios.yml)|
 |[![Ubuntu](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/ubuntu.yml/badge.svg)](https://github.com/OpenSwiftUIProject/OpenBox/actions/workflows/ubuntu.yml)|
 
-The project is for the following purposes:
-- Add OB support for non-Apple platform (eg. Linux, WASI and Windows)
-- Diagnose and debug RB issues on Apple platform
-
-Currently, this project is in early development.
-
 ## License
 
 See LICENSE file - MIT