92 lines
3.4 KiB
Objective-C
92 lines
3.4 KiB
Objective-C
// Copyright 2018 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef INCLUDE_DAWN_NATIVE_METALBACKEND_H_
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#define INCLUDE_DAWN_NATIVE_METALBACKEND_H_
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#include <vector>
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#include "dawn/native/DawnNative.h"
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// The specifics of the Metal backend expose types in function signatures that might not be
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// available in dependent's minimum supported SDK version. Suppress all availability errors using
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// clang's pragmas. Dependents using the types without guarded availability will still get errors
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// when using the types.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wunguarded-availability"
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struct __IOSurface;
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typedef __IOSurface* IOSurfaceRef;
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#ifdef __OBJC__
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#import <Metal/Metal.h>
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#endif // __OBJC__
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namespace dawn::native::metal {
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struct DAWN_NATIVE_EXPORT AdapterDiscoveryOptions : public AdapterDiscoveryOptionsBase {
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AdapterDiscoveryOptions();
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};
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struct DAWN_NATIVE_EXPORT ExternalImageMTLSharedEventDescriptor {
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// Shared event handle `id<MTLSharedEvent>`.
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// This never passes ownership to the callee (when used as an input
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// parameter) or to the caller (when used as a return value or output parameter).
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#ifdef __OBJC__
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id<MTLSharedEvent> sharedEvent = nil;
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static_assert(sizeof(id<MTLSharedEvent>) == sizeof(void*));
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static_assert(alignof(id<MTLSharedEvent>) == alignof(void*));
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#else
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void* sharedEvent = nullptr;
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#endif
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// The value that was previously signaled on this event and should be waited on.
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uint64_t signaledValue = 0;
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};
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struct DAWN_NATIVE_EXPORT ExternalImageDescriptorIOSurface : ExternalImageDescriptor {
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public:
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ExternalImageDescriptorIOSurface();
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~ExternalImageDescriptorIOSurface();
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IOSurfaceRef ioSurface;
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// A list of events to wait on before accessing the texture.
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std::vector<ExternalImageMTLSharedEventDescriptor> waitEvents;
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};
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struct DAWN_NATIVE_EXPORT ExternalImageIOSurfaceEndAccessDescriptor
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: ExternalImageMTLSharedEventDescriptor {
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bool isInitialized;
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};
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DAWN_NATIVE_EXPORT WGPUTexture WrapIOSurface(WGPUDevice device,
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const ExternalImageDescriptorIOSurface* descriptor);
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DAWN_NATIVE_EXPORT void IOSurfaceEndAccess(WGPUTexture texture,
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ExternalImageIOSurfaceEndAccessDescriptor* descriptor);
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// When making Metal interop with other APIs, we need to be careful that QueueSubmit doesn't
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// mean that the operations will be visible to other APIs/Metal devices right away. macOS
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// does have a global queue of graphics operations, but the command buffers are inserted there
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// when they are "scheduled". Submitting other operations before the command buffer is
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// scheduled could lead to races in who gets scheduled first and incorrect rendering.
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DAWN_NATIVE_EXPORT void WaitForCommandsToBeScheduled(WGPUDevice device);
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} // namespace dawn::native::metal
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#pragma clang diagnostic pop
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#endif // INCLUDE_DAWN_NATIVE_METALBACKEND_H_
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