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 kMyProjectId = new Guid("7E1DEA84-51F1-477A-82B5-B5C57AC1EBF7");
    public static readonly int kTextureInfoTag = 0;
    public static readonly int kTextureDataTag = 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(kMyProjectId, kTextureInfoTag, new[] { textureInfo });
        Profiler.EmitFrameMetaData(kMyProjectId, kTextureDataTag, 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>(kMyProjectId, kTextureInfoTag);
            if (textureInfos.Length == 0)
                return null;

            NativeArray<byte> textureData = frameData.GetFrameMetaData<byte>(kMyProjectId, kTextureDataTag);
            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 lifetime of the returned NativeArray is defined by the FrameDataView instance. If FrameDataView is disposed all returned metadata becomes invalid and can not be used anymore.

另请参阅：Profiler.EmitFrameMetaData。