FrameDataView.GetFrameMetaData

参数

返回

NativeArray<T> 以 NativeArray 形式返回帧元数据。

描述

获取与帧关联的元数据。

Use GetFrameMetaData to retrieve the data that the Profiler.EmitFrameMetaData method wrote to the Profiler stream.

Use id to identify the metadata from your Project or package.
Use tag to distinguish between different data streams.
Use index to retrieve separate data chunks for each Profiler.EmitFrameMetaData called in a frame.

using System;
using Unity.Collections;
using UnityEditor.Profiling;
using UnityEditorInternal;
using UnityEngine;
using UnityEngine.Profiling;

public class Example
{
    public struct TextureInfo
    {
        public int format;
        public int w;
        public int h;
    }

    public static readonly Guid MyProjectId = new Guid("7E1DEA84-51F1-477A-82B5-B5C57AC1EBF7");
    public static readonly int TextureInfoTag = 0;
    public static readonly int TextureDataTag = 1;

    public void EmitTextureToProfilerStream(Texture2D t)
    {
        TextureInfo textureInfo = new TextureInfo() { format = (int)t.format, w = t.width, h = t.height };
        NativeArray<byte> textureData = t.GetRawTextureData<byte>();
        Profiler.EmitFrameMetaData(MyProjectId, TextureInfoTag, new[] { textureInfo });
        Profiler.EmitFrameMetaData(MyProjectId, TextureDataTag, textureData);
    }

    public Texture2D GetTextureFromProfilerStream(int frame)
    {
        using (var frameData = ProfilerDriver.GetHierarchyFrameDataView(frame, 0, HierarchyFrameDataView.ViewModes.Default, HierarchyFrameDataView.columnDontSort, false))
        {
            NativeArray<TextureInfo> textureInfos = frameData.GetFrameMetaData<TextureInfo>(MyProjectId, TextureInfoTag);
            if (textureInfos.Length == 0)
                return null;

            NativeArray<byte> textureData = frameData.GetFrameMetaData<byte>(MyProjectId, TextureDataTag);
            if (textureData.Length == 0)
                return null;

            TextureInfo textureInfo = textureInfos[0];
            Texture2D texture = new Texture2D(textureInfo.w, textureInfo.h, (TextureFormat)textureInfo.format, false);
            texture.LoadRawTextureData(textureData);

            return texture;
        }
    }
}

Note:
The FrameDataView instance defines the lifetime of the returned ''NativeArray'. As such, if FrameDataView is disposed, all returned metadata becomes invalid and cannot be used. Copy data to a new NativeArray if you need it for longer duration.

另请参阅：Profiler.EmitFrameMetaData。