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// Copyright 2018 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.
#ifndef DAWNNATIVE_METALBACKEND_H_
#define DAWNNATIVE_METALBACKEND_H_
#include <dawn/dawn_wsi.h>
#include <dawn_native/DawnNative.h>
// The specifics of the Metal backend expose types in function signatures that might not be
// available in dependent's minimum supported SDK version. Suppress all availability errors using
// clang's pragmas. Dependents using the types without guarded availability will still get errors
// when using the types.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunguarded-availability"
struct __IOSurface;
typedef __IOSurface* IOSurfaceRef;
#ifdef __OBJC__
# import <Metal/Metal.h>
#endif //__OBJC__
namespace dawn_native { namespace metal {
DAWN_NATIVE_EXPORT WGPUTexture WrapIOSurface(WGPUDevice device,
const WGPUTextureDescriptor* descriptor,
IOSurfaceRef ioSurface,
uint32_t plane);
// When making Metal interop with other APIs, we need to be careful that QueueSubmit doesn't
// mean that the operations will be visible to other APIs/Metal devices right away. macOS
// does have a global queue of graphics operations, but the command buffers are inserted there
// when they are "scheduled". Submitting other operations before the command buffer is
// scheduled could lead to races in who gets scheduled first and incorrect rendering.
DAWN_NATIVE_EXPORT void WaitForCommandsToBeScheduled(WGPUDevice device);
}} // namespace dawn_native::metal
#ifdef __OBJC__
namespace dawn_native { namespace metal {
DAWN_NATIVE_EXPORT id<MTLDevice> GetMetalDevice(WGPUDevice device);
}} // namespace dawn_native::metal
#endif // __OBJC__
#pragma clang diagnostic pop
#endif // DAWNNATIVE_METALBACKEND_H_
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