[WIP] MetalANGLE support?

.github/workflows/kivy_ios.yml

@@ -47,6 +47,36 @@ jobs:
       run: |
         .ci/test_project.sh
 
+  build_python3_kivy_metalangle:
+    runs-on: macos-latest
+    env:
+      KIVYIOS_USE_METALANGLE: 1
+    steps:
+    - name: Checkout kivy-ios
+      uses: actions/checkout@v2
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.8.x'
+    - name: Install requirements
+      run: |
+        pip3 install -r requirements.txt
+        brew install autoconf automake libtool pkg-config
+        brew link libtool
+        pip3 install Cython==0.29.17
+        gem install xcpretty
+    - name: Build Python & Kivy with MetalANGLE support
+      run: |
+        python toolchain.py build python3 kivy
+    - name: Checkout kivy for tests apps
+      uses: actions/checkout@v2
+      with:
+        repository: kivy/kivy
+        path: kivy-ci-clone
+    - name: Create & Build test project
+      run: |
+        .ci/test_project.sh
+
   build_python3_kivy_venv:
     runs-on: macos-latest
     steps:

kivy_ios/recipes/kivy/__init__.py

@@ -1,5 +1,6 @@
 from kivy_ios.toolchain import CythonRecipe
 from os.path import join
+import os
 import logging
 import shutil
 
@@ -17,7 +18,7 @@ class KivyRecipe(CythonRecipe):
     depends = ["sdl2", "sdl2_image", "sdl2_mixer", "sdl2_ttf", "ios",
                "pyobjus", "python", "host_setuptools3"]
     python_depends = ["certifi"]
-    pbx_frameworks = ["OpenGLES", "Accelerate", "CoreMedia", "CoreVideo"]
+    pbx_frameworks = ["Accelerate", "CoreMedia", "CoreVideo"]
     pre_build_ext = True
 
     def get_recipe_env(self, arch):
@@ -41,9 +42,17 @@ def _remove_line(lines, pattern):
             for line in lines[:]:
                 if pattern in line:
                     lines.remove(line)
+
+        def _sub_pattern(lines, pattern_old, pattern_new):
+            for i, line in enumerate(lines[:]):
+                if pattern_old in line:
+                    lines[i] = lines[i].replace(pattern_old, pattern_new)
+
         with open(pyconfig) as fd:
             lines = fd.readlines()
         _remove_line(lines, "flags['libraries'] = ['GLESv2']")
+        if os.environ.get("KIVYIOS_USE_METALANGLE"):
+            _sub_pattern(lines, "OpenGLES", "MetalANGLE")
         with open(pyconfig, "w") as fd:
             fd.writelines(lines)
 

kivy_ios/recipes/sdl2/__init__.py

@@ -1,36 +1,84 @@
 from kivy_ios.toolchain import Recipe, shprint
+from os.path import join
+import os
 import sh
 
 
 class LibSDL2Recipe(Recipe):
-    # version = "2.0.9"
-    # url = "https://www.libsdl.org/release/SDL2-{version}.tar.gz"
-    version = "7cc4fc886d9e"
-    url = "https://hg.libsdl.org/SDL/archive/{version}.tar.gz"
-    library = "Xcode-iOS/SDL/build/Release-{arch.sdk}/libSDL2.a"
+    version = "ios-use-metalangle"
+    url = "https://github.com/misl6/SDL/archive/refs/heads/feature/{version}.zip"
+
+    metalangle_baseurl = (
+        "https://github.com/kakashidinho/metalangle/releases/download/gles3-0.0.6"
+    )
+    metalangle_arch_map = dict(
+        x86_64="MetalANGLE.framework.ios.simulator.zip",
+        arm64="MetalANGLE.framework.ios.zip",
+    )
+
+    library = "Xcode/SDL/build/Release-{arch.sdk}/libSDL2.a"
     include_dir = "include"
     pbx_frameworks = [
-        "OpenGLES", "AudioToolbox", "QuartzCore", "CoreGraphics",
-        "CoreMotion", "GameController", "AVFoundation", "Metal",
-        "UIKit"]
+        "AudioToolbox",
+        "QuartzCore",
+        "CoreGraphics",
+        "CoreMotion",
+        "GameController",
+        "AVFoundation",
+        "Metal",
+        "UIKit",
+        "CoreHaptics",
+    ]
+
+    def __init__(self):
+        if os.environ.get("KIVYIOS_USE_METALANGLE"):
+            self.frameworks = ["MetalANGLE"]
+            self.pbx_frameworks.append("MetalANGLE")
+        else:
+            self.pbx_frameworks.append("OpenGLES")
 
     def prebuild_arch(self, arch):
         if self.has_marker("patched"):
             return
-        self.apply_patch("uikit-transparent.patch")
+        # self.apply_patch("uikit-transparent.patch")
+        if os.environ.get("KIVYIOS_USE_METALANGLE"):
+            self.apply_patch("enable-metalangle.patch")
+            downloaded_file = self.download_file(
+                join(self.metalangle_baseurl, self.metalangle_arch_map[arch.arch]),
+                self.metalangle_arch_map[arch.arch],
+            )
+            self.extract_file(
+                downloaded_file,
+                join(self.get_build_dir(arch.arch), "Xcode/SDL/third-party/frameworks"),
+            )
+            if arch.arch == "arm64":
+                self.extract_file(
+                    downloaded_file,
+                    join(self.ctx.dist_dir, "frameworks"),
+                )
         self.set_marker("patched")
 
+    def install_frameworks(self):
+        pass
+
     def build_arch(self, arch):
         env = arch.get_env()
-        shprint(sh.xcodebuild, self.ctx.concurrent_xcodebuild,
-                "ONLY_ACTIVE_ARCH=NO",
-                "ARCHS={}".format(arch.arch),
-                "BITCODE_GENERATION_MODE=bitcode",
-                "CC={}".format(env['CC']),
-                "-sdk", arch.sdk,
-                "-project", "Xcode-iOS/SDL/SDL.xcodeproj",
-                "-target", "libSDL-iOS",
-                "-configuration", "Release")
+        shprint(
+            sh.xcodebuild,
+            self.ctx.concurrent_xcodebuild,
+            "ONLY_ACTIVE_ARCH=NO",
+            "ARCHS={}".format(arch.arch),
+            "BITCODE_GENERATION_MODE=bitcode",
+            "CC={}".format(env["CC"]),
+            "-sdk",
+            arch.sdk,
+            "-project",
+            "Xcode/SDL/SDL.xcodeproj",
+            "-target",
+            "Static Library-iOS",
+            "-configuration",
+            "Release",
+        )
 
 
 recipe = LibSDL2Recipe()

kivy_ios/recipes/sdl2/enable-metalangle.patch

@@ -0,0 +1,15 @@
+diff -Naur SDL-feature-ios-use-metalangle.orig/include/SDL_config_iphoneos.h SDL-feature-ios-use-metalangle/include/SDL_config_iphoneos.h
+--- SDL-feature-ios-use-metalangle.orig/include/SDL_config_iphoneos.h	2021-04-30 23:56:59.000000000 +0200
++++ SDL-feature-ios-use-metalangle/include/SDL_config_iphoneos.h	2021-04-30 23:57:26.000000000 +0200
+@@ -173,9 +173,9 @@
+ #if !TARGET_OS_MACCATALYST
+ #define SDL_VIDEO_OPENGL_ES2 1
+ #define SDL_VIDEO_OPENGL_ES 1
+-#define SDL_VIDEO_RENDER_OGL_ES 1
++#define SDL_VIDEO_RENDER_OGL_ES 0
+ #define SDL_VIDEO_RENDER_OGL_ES2    1
+-#define SDL_VIDEO_OPENGL_METALANGLE 0
++#define SDL_VIDEO_OPENGL_METALANGLE 1
+ #endif
+
+ /* Metal supported on 64-bit devices running iOS 8.0 and tvOS 9.0 and newer

kivy_ios/toolchain.py

@@ -1231,17 +1231,19 @@ def update_pbxproj(filename, pbx_frameworks=None):
     group = project.get_or_create_group("Frameworks")
     g_classes = project.get_or_create_group("Classes")
     file_options = FileOptions(embed_framework=False, code_sign_on_copy=True)
+    file_options_embed = FileOptions(embed_framework=True, code_sign_on_copy=True)
     for framework in pbx_frameworks:
-        framework_name = "{}.framework".format(framework)
-        if framework_name in frameworks:
+        if framework in frameworks:
             logger.info("Ensure {} is in the project (pbx_frameworks, local)".format(framework))
-            f_path = join(ctx.dist_dir, "frameworks", framework_name)
+            f_path = join(ctx.dist_dir, "frameworks", f"{framework}.framework")
+            project.add_file(f_path, parent=group, tree="DEVELOPER_DIR",
+                             force=False, file_options=file_options_embed)
         else:
             logger.info("Ensure {} is in the project (pbx_frameworks, system)".format(framework))
             f_path = join(sysroot, "System", "Library", "Frameworks",
                           "{}.framework".format(framework))
-        project.add_file(f_path, parent=group, tree="DEVELOPER_DIR",
-                         force=False, file_options=file_options)
+            project.add_file(f_path, parent=group, tree="DEVELOPER_DIR",
+                             force=False, file_options=file_options)
     for library in pbx_libraries:
         logger.info("Ensure {} is in the project (pbx_libraries, dylib+tbd)".format(library))
         f_path = join(sysroot, "usr", "lib",

kivy_ios/tools/templates/{{ cookiecutter.project_name }}-ios/{{ cookiecutter.project_name }}.xcodeproj/project.pbxproj

@@ -27,6 +27,20 @@
 		59994E3B148E85C800863906 /* YourApp in Resources */ = {isa = PBXBuildFile; fileRef = 59994E3A148E85C800863906 /* YourApp */; };
 /* End PBXBuildFile section */
 
+
+/* Begin PBXCopyFilesBuildPhase section */
+		EF5745029C423687AC1203A1 /* Embed Frameworks */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
 /* Begin PBXFileReference section */
 		01532DA9137C099F0076F6BF /* icon.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = icon.png; sourceTree = "<group>"; };
 		1D6058910D05DD3D006BFB54 /* {{ cookiecutter.project_name }}.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = {{ cookiecutter.project_name }}.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -143,6 +157,7 @@
 				1D60588D0D05DD3D006BFB54 /* Resources */,
 				1D60588E0D05DD3D006BFB54 /* Sources */,
 				1D60588F0D05DD3D006BFB54 /* Frameworks */,
+				EF5745029C423687AC1203A1 /* Embed Frameworks */,
 			);
 			buildRules = (
 			);