src/dawn/native/metal/DeviceMTL.h

// Copyright 2018 The Dawn & Tint Authors
//
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// 1. Redistributions of source code must retain the above copyright notice, this
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//    this list of conditions and the following disclaimer in the documentation
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#ifndef SRC_DAWN_NATIVE_METAL_DEVICEMTL_H_
#define SRC_DAWN_NATIVE_METAL_DEVICEMTL_H_

#include <atomic>
#include <memory>
#include <mutex>
#include <vector>

#include "dawn/native/dawn_platform.h"

#include "dawn/native/Commands.h"
#include "dawn/native/Device.h"
#include "dawn/native/metal/CommandRecordingContext.h"
#include "dawn/native/metal/Forward.h"

#import <IOSurface/IOSurfaceRef.h>
#import <Metal/Metal.h>
#import <QuartzCore/QuartzCore.h>

namespace dawn::native::metal {

struct KalmanInfo;

class Device final : public DeviceBase {
  public:
    static ResultOrError<Ref<Device>> Create(AdapterBase* adapter,
                                             NSPRef<id<MTLDevice>> mtlDevice,
                                             const UnpackedPtr<DeviceDescriptor>& descriptor,
                                             const TogglesState& deviceToggles,
                                             Ref<DeviceBase::DeviceLostEvent>&& lostEvent);
    ~Device() override;

    MaybeError Initialize(const UnpackedPtr<DeviceDescriptor>& descriptor);

    MaybeError TickImpl() override;

    id<MTLDevice> GetMTLDevice() const;

    MaybeError CopyFromStagingToBufferImpl(BufferBase* source,
                                           uint64_t sourceOffset,
                                           BufferBase* destination,
                                           uint64_t destinationOffset,
                                           uint64_t size) override;
    MaybeError CopyFromStagingToTextureImpl(const BufferBase* source,
                                            const TextureDataLayout& dataLayout,
                                            const TextureCopy& dst,
                                            const Extent3D& copySizePixels) override;

    uint32_t GetOptimalBytesPerRowAlignment() const override;
    uint64_t GetOptimalBufferToTextureCopyOffsetAlignment() const override;

    float GetTimestampPeriodInNS() const override;

    bool IsResolveTextureBlitWithDrawSupported() const override;

    bool UseCounterSamplingAtCommandBoundary() const;
    bool UseCounterSamplingAtStageBoundary() const;

    // Get a MTLBuffer that can be used as a mock in a no-op blit encoder based on filling this
    // single-byte buffer
    id<MTLBuffer> GetMockBlitMtlBuffer();

  private:
    Device(AdapterBase* adapter,
           NSPRef<id<MTLDevice>> mtlDevice,
           const UnpackedPtr<DeviceDescriptor>& descriptor,
           const TogglesState& deviceToggles,
           Ref<DeviceBase::DeviceLostEvent>&& lostEvent);

    ResultOrError<Ref<BindGroupBase>> CreateBindGroupImpl(
        const BindGroupDescriptor* descriptor) override;
    ResultOrError<Ref<BindGroupLayoutInternalBase>> CreateBindGroupLayoutImpl(
        const BindGroupLayoutDescriptor* descriptor) override;
    ResultOrError<Ref<BufferBase>> CreateBufferImpl(
        const UnpackedPtr<BufferDescriptor>& descriptor) override;
    ResultOrError<Ref<CommandBufferBase>> CreateCommandBuffer(
        CommandEncoder* encoder,
        const CommandBufferDescriptor* descriptor) override;
    ResultOrError<Ref<PipelineLayoutBase>> CreatePipelineLayoutImpl(
        const UnpackedPtr<PipelineLayoutDescriptor>& descriptor) override;
    ResultOrError<Ref<QuerySetBase>> CreateQuerySetImpl(
        const QuerySetDescriptor* descriptor) override;
    ResultOrError<Ref<SamplerBase>> CreateSamplerImpl(const SamplerDescriptor* descriptor) override;
    ResultOrError<Ref<ShaderModuleBase>> CreateShaderModuleImpl(
        const UnpackedPtr<ShaderModuleDescriptor>& descriptor,
        ShaderModuleParseResult* parseResult,
        OwnedCompilationMessages* compilationMessages) override;
    ResultOrError<Ref<SwapChainBase>> CreateSwapChainImpl(
        Surface* surface,
        SwapChainBase* previousSwapChain,
        const SurfaceConfiguration* config) override;
    ResultOrError<Ref<TextureBase>> CreateTextureImpl(
        const UnpackedPtr<TextureDescriptor>& descriptor) override;
    ResultOrError<Ref<TextureViewBase>> CreateTextureViewImpl(
        TextureBase* texture,
        const UnpackedPtr<TextureViewDescriptor>& descriptor) override;
    Ref<ComputePipelineBase> CreateUninitializedComputePipelineImpl(
        const UnpackedPtr<ComputePipelineDescriptor>& descriptor) override;
    Ref<RenderPipelineBase> CreateUninitializedRenderPipelineImpl(
        const UnpackedPtr<RenderPipelineDescriptor>& descriptor) override;
    void InitializeComputePipelineAsyncImpl(Ref<CreateComputePipelineAsyncEvent> event) override;
    void InitializeRenderPipelineAsyncImpl(Ref<CreateRenderPipelineAsyncEvent> event) override;

    ResultOrError<wgpu::TextureUsage> GetSupportedSurfaceUsageImpl(
        const Surface* surface) const override;

    ResultOrError<Ref<SharedTextureMemoryBase>> ImportSharedTextureMemoryImpl(
        const SharedTextureMemoryDescriptor* descriptor) override;
    ResultOrError<Ref<SharedFenceBase>> ImportSharedFenceImpl(
        const SharedFenceDescriptor* descriptor) override;

    void DestroyImpl() override;

    NSPRef<id<MTLDevice>> mMtlDevice;

    // The current estimation of timestamp period
    float mTimestampPeriod = 1.0f;
    // The base of CPU timestamp and GPU timestamp to measure the linear regression between GPU
    // and CPU timestamps.
    MTLTimestamp mCpuTimestamp API_AVAILABLE(macos(10.15), ios(14.0)) = 0;
    MTLTimestamp mGpuTimestamp API_AVAILABLE(macos(10.15), ios(14.0)) = 0;
    // The parameters for kalman filter
    std::unique_ptr<KalmanInfo> mKalmanInfo;
    bool mIsTimestampQueryEnabled = false;

    // Support counter sampling between blit commands, dispatches and draw calls
    bool mCounterSamplingAtCommandBoundary;
    // Support counter sampling at the begin and end of blit pass, compute pass and render pass's
    // vertex/fragement stage
    bool mCounterSamplingAtStageBoundary;
    NSPRef<id<MTLBuffer>> mMockBlitMtlBuffer;
};

}  // namespace dawn::native::metal

#endif  // SRC_DAWN_NATIVE_METAL_DEVICEMTL_H_