| // Copyright 2020 the Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| // Contains a helper function for Surface.cpp that needs to be written in ObjectiveC. |
| |
| #if !defined(DAWN_ENABLE_BACKEND_METAL) |
| #error "Surface_metal.mm requires the Metal backend to be enabled." |
| #endif // !defined(DAWN_ENABLE_BACKEND_METAL) |
| |
| #import <QuartzCore/CAMetalLayer.h> |
| |
| namespace dawn::native { |
| |
| bool InheritsFromCAMetalLayer(void* obj) { |
| id<NSObject> object = static_cast<id>(obj); |
| return [object isKindOfClass:[CAMetalLayer class]]; |
| } |
| |
| } // namespace dawn::native |