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// Copyright 2017 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_METAL_BUFFERMTL_H_
#define DAWNNATIVE_METAL_BUFFERMTL_H_
#include "dawn/common/NSRef.h"
#include "dawn/common/SerialQueue.h"
#include "dawn/native/Buffer.h"
#import <Metal/Metal.h>
namespace dawn::native::metal {
class CommandRecordingContext;
class Device;
class Buffer final : public BufferBase {
public:
static ResultOrError<Ref<Buffer>> Create(Device* device,
const BufferDescriptor* descriptor);
id<MTLBuffer> GetMTLBuffer() const;
bool EnsureDataInitialized(CommandRecordingContext* commandContext);
bool EnsureDataInitializedAsDestination(CommandRecordingContext* commandContext,
uint64_t offset,
uint64_t size);
bool EnsureDataInitializedAsDestination(CommandRecordingContext* commandContext,
const CopyTextureToBufferCmd* copy);
static uint64_t QueryMaxBufferLength(id<MTLDevice> mtlDevice);
private:
using BufferBase::BufferBase;
MaybeError Initialize(bool mappedAtCreation);
~Buffer() override;
MaybeError MapAsyncImpl(wgpu::MapMode mode, size_t offset, size_t size) override;
void UnmapImpl() override;
void DestroyImpl() override;
void* GetMappedPointerImpl() override;
bool IsCPUWritableAtCreation() const override;
MaybeError MapAtCreationImpl() override;
void InitializeToZero(CommandRecordingContext* commandContext);
void ClearBuffer(CommandRecordingContext* commandContext,
uint8_t clearValue,
uint64_t offset = 0,
uint64_t size = 0);
NSPRef<id<MTLBuffer>> mMtlBuffer;
};
} // namespace dawn::native::metal
#endif // DAWNNATIVE_METAL_BUFFERMTL_H_