Fix build for iOS

Change-Id: Ibe81e9312418efb007fc32b32b2accdd6bd3ddce
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/212074
Reviewed-by: Loko Kung <[email protected]>
Commit-Queue: Corentin Wallez <[email protected]>
Reviewed-by: Corentin Wallez <[email protected]>

Author: fs-eire

src/dawn/native/CMakeLists.txt

@@ -864,6 +864,11 @@ if (DAWN_ENABLE_SWIFTSHADER)
     target_compile_definitions(dawn_native_objects PRIVATE "DAWN_ENABLE_SWIFTSHADER")
 endif()
 
+if (IOS)
+    target_compile_options(dawn_native_objects PRIVATE -fno-objc-arc)
+    target_compile_options(dawn_native PRIVATE -fno-objc-arc)
+endif()
+
 if (DAWN_BUILD_MONOLITHIC_LIBRARY)
     ###############################################################################
     # Do the 'complete_lib' build.

src/dawn/native/Surface_metal.mm

@@ -33,10 +33,18 @@
 
 #import <QuartzCore/CAMetalLayer.h>
 
+#include "dawn/common/Platform.h"
+
 namespace dawn::native {
 
 bool InheritsFromCAMetalLayer(void* obj) {
-    id<NSObject> object = static_cast<id>(obj);
+    id<NSObject> object =
+#if DAWN_PLATFORM_IS(IOS)
+        (__bridge id)obj;
+#else   // DAWN_PLATFORM_IS(IOS)
+        static_cast<id>(obj);
+#endif  // DAWN_PLATFORM_IS(IOS)
+
     return [object isKindOfClass:[CAMetalLayer class]];
 }
 

src/dawn/native/metal/SharedFenceMTL.mm

@@ -25,6 +25,8 @@
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#include "dawn/common/Platform.h"
+
 #include "dawn/native/metal/SharedFenceMTL.h"
 
 #include "dawn/native/ChainUtils.h"
@@ -39,8 +41,13 @@
     const SharedFenceMTLSharedEventDescriptor* descriptor) {
     DAWN_INVALID_IF(descriptor->sharedEvent == nullptr, "MTLSharedEvent is missing.");
     if (@available(macOS 10.14, iOS 12.0, *)) {
-        return AcquireRef(new SharedFence(
-            device, label, static_cast<id<MTLSharedEvent>>(descriptor->sharedEvent)));
+        return AcquireRef(new SharedFence(device, label,
+#if DAWN_PLATFORM_IS(IOS)
+                                          (__bridge id<MTLSharedEvent>)(descriptor->sharedEvent)
+#else   // DAWN_PLATFORM_IS(IOS)
+                                          static_cast<id<MTLSharedEvent>>(descriptor->sharedEvent)
+#endif  // DAWN_PLATFORM_IS(IOS)
+                                              ));
     } else {
         return DAWN_INTERNAL_ERROR("MTLSharedEvent not supported.");
     }