Add updated iOS App support to the Vulkan examples (#1119)

* Fix clang Objective-C++ flags for macOS command line builds

* Fix getAssetPath() and getShaderBasePath() for macOS command line builds

* Protect debugUtilsMessageCallback() from failing when pMessageIdName is NULL

* Fix a few clang function override and mismatched type warnings

* Fix validation layer warnings on exit for computeraytracing example

* Fix regression in text visibility toggle for textOverlay example

* Support VK_USE_PLATFORM_METAL_EXT vs. deprecated VK_USE_PLATFORM_MACOS_MVK / DVK_USE_PLATFORM_IOS_MVK

* Check dynamic state features before enabling capabilities in dynamicstate example

* Fix vkCmdDraw() vertexCount argument (PARTICLE_COUNT) in particlesystem example

* Update examples list and restore benchmarking script (to top level)

* Fix validation warning in descriptorindexing example

* Fix device max recursion depth validation warnings in ray tracing examples

* Fix OpenMP build settings for texture3d example on all platforms

* Update and simplify build instructions for macOS

* Update CI script with correct library path for libomp on macOS x86_64

* Update CI scipt to install libomp prior to macOS builds

* Trying one more time to get the CI script working for macOS libomp

* Fix vertexCount argument using calculated size in particlesystem example

* Fix combined image descriptor offset calculation in descriptorbuffer example

* Add iOS App support for Vulkan examples on simulator and physical devices

* Add continuous integration (CI) script for iOS

* Update CI script to build iOS using Xcode 14 via macos-12 runner-image

* Update iOS project docs for Xcode 14 and rename ios folder to apple

* Update macOS docs and CI script to use LIBOMP_PREFIX for OpenMP library path

* Delete benchmark-all-validate.py

Delete benchmark script as per feedback from Sascha Willems

* Update debugprintf example documentation in examples.h

.github/workflows/build.yml

@@ -42,7 +42,7 @@ jobs:
           cmake --build .
 
   build_macOS:
-    name: Build Mac
+    name: Build macOS
     runs-on: macos-11
     steps:
       - uses: actions/checkout@v3
@@ -57,8 +57,31 @@ jobs:
           cd ~/VulkanSDK/latest
           sudo python ./install_vulkan.py
           brew install libomp
-          brew --prefix libomp 
       - name: Build
         run: |
-          cmake -G "Xcode" -DOpenMP_omp_LIBRARY=/usr/local/opt/libomp/lib/libomp.dylib
+          export LIBOMP_PREFIX=$(brew --prefix libomp)
+          cmake -G "Xcode" -DOpenMP_omp_LIBRARY=$LIBOMP_PREFIX/lib/libomp.dylib .
           cmake --build .
+
+  build_iOS:
+    name: Build iOS
+    runs-on: macos-12
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: "recursive"  
+      - name: Setup
+        run: |
+          curl -L "https://sdk.lunarg.com/sdk/download/latest/mac/vulkan-sdk.dmg" -o /tmp/vulkan-sdk.dmg
+          hdiutil attach /tmp/vulkan-sdk.dmg -mountpoint /Volumes/vulkan-sdk
+          /Volumes/vulkan-sdk/InstallVulkan.app/Contents/MacOS/InstallVulkan \
+              --root ~/VulkanSDK/latest --accept-licenses --default-answer --confirm-command install
+          cd ~/VulkanSDK/latest
+          sudo python ./install_vulkan.py
+      - name: Build
+        run: |
+          cd apple
+          rm MoltenVK.xcframework
+          ln -s ~/VulkanSDK/latest/macOS/lib/MoltenVK.xcframework
+          xcodebuild -scheme examples-ios build CODE_SIGNING_ALLOWED=NO
+          xcodebuild -scheme examples-macos build