private IDataSource <object> SubmitPrefetchRequest(
IProducer <object> producerSequence,
ImageRequest imageRequest,
RequestLevel lowestPermittedRequestLevelOnSubmit,
object callerContext,
int priority)
{
IRequestListener requestListener = GetRequestListenerForRequest(imageRequest);
try
{
RequestLevel lowestPermittedRequestLevel = RequestLevel.GetMax(
imageRequest.LowestPermittedRequestLevel,
lowestPermittedRequestLevelOnSubmit);
SettableProducerContext settableProducerContext = new SettableProducerContext(
imageRequest,
GenerateUniqueFutureId(),
requestListener,
callerContext,
lowestPermittedRequestLevel.Value,
/* isPrefetch */ true,
/* isIntermediateResultExpected */ false,
priority);
return(ProducerToDataSourceAdapter <object> .Create(
producerSequence,
settableProducerContext,
requestListener));
}
catch (Exception exception)
{
return(DataSources.ImmediateFailedDataSource <object>(exception));
}
}
private IDataSource <CloseableReference <T> > SubmitFetchRequest <T>(
IProducer <CloseableReference <T> > producerSequence,
ImageRequest imageRequest,
RequestLevel lowestPermittedRequestLevelOnSubmit,
object callerContext)
{
IRequestListener requestListener = GetRequestListenerForRequest(imageRequest);
try
{
RequestLevel lowestPermittedRequestLevel = RequestLevel.GetMax(
imageRequest.LowestPermittedRequestLevel,
lowestPermittedRequestLevelOnSubmit);
SettableProducerContext settableProducerContext = new SettableProducerContext(
imageRequest,
GenerateUniqueFutureId(),
requestListener,
callerContext,
lowestPermittedRequestLevel.Value,
/* isPrefetch */ false,
imageRequest.IsProgressiveRenderingEnabled ||
!UriUtil.IsNetworkUri(imageRequest.SourceUri),
imageRequest.Priority);
return(CloseableProducerToDataSourceAdapter <T> .Create(
producerSequence,
settableProducerContext,
requestListener));
}
catch (Exception exception)
{
return(DataSources.ImmediateFailedDataSource <CloseableReference <T> >(exception));
}
}
/// <summary>
/// @deprecated Use GetDataSourceSupplier(ImageRequest imageRequest,
/// object callerContext, RequestLevel requestLevel) instead.
/// </summary>
public ISupplier <IDataSource <CloseableReference <CloseableImage> > > GetDataSourceSupplier(
ImageRequest imageRequest,
object callerContext,
bool bitmapCacheOnly)
{
RequestLevel requestLevel = bitmapCacheOnly ?
new RequestLevel(RequestLevel.BITMAP_MEMORY_CACHE) :
new RequestLevel(RequestLevel.FULL_FETCH);
return(GetDataSourceSupplier(imageRequest, callerContext, requestLevel));
}
void LoadRes(int abIndex, RequestLevel level)
{
ResourceManager.Instance.GetResource("u3d" + abIndex + ".u3d", "obj", (obj) => {
j++;
print("----->" + obj.name);
//Instantiate(obj);
if (j == 999)
{
print("花费时间-------" + (Time.time - start).ToString());
}
}, level);
}
/// <summary>
/// Returns an IDataSource supplier that will on get submit
/// the request for execution and return an IDataSource
/// representing the pending results of the task.
/// </summary>
/// <param name="imageRequest">
/// The request to submit (what to execute).
/// </param>
/// <param name="callerContext">
/// The caller context of the caller of data source supplier.
/// </param>
/// <param name="requestLevel">
/// Which level to look down until for the image.
/// </param>
/// <returns>
/// An IDataSource representing pending results and completion
/// of the request.
/// </returns>
public ISupplier <IDataSource <CloseableReference <CloseableImage> > > GetDataSourceSupplier(
ImageRequest imageRequest,
object callerContext,
RequestLevel requestLevel)
{
return(new SupplierImpl <IDataSource <CloseableReference <CloseableImage> > >(
() =>
{
return FetchDecodedImage(imageRequest, callerContext, requestLevel);
},
() =>
{
return $"{ base.ToString() }{{uri={ imageRequest.SourceUri.ToString() }}}";
}));
}
// Use this for initialization
void Start()
{
print("本次加载1000个资源");
start = Time.time;
for (int i = 0; i < 1000; i++)
{
int ramdomIndex = Random.Range(1, 5);
float ramdomLevel = Random.Range(1, 3);
RequestLevel level = ramdomLevel == 1 ? RequestLevel.High : RequestLevel.Low;
LoadRes(ramdomIndex, level);
}
//for (int i = 0; i < 100; i++)
//{
// LoadRes(1, RequestLevel.High);
//}
}
/// <summary>
/// Submits a request for execution and returns an IDataSource
/// representing the pending decoded image(s).
/// <para />The returned DataSource must be closed once the
/// client has finished with it.
/// </summary>
/// <param name="imageRequest">
/// The request to submit.
/// </param>
/// <param name="callerContext">
/// The caller context for image request.
/// </param>
/// <param name="lowestPermittedRequestLevelOnSubmit">
/// The lowest request level permitted for image request.
/// </param>
/// <returns>
/// An IDataSource representing the pending decoded image(s).
/// </returns>
public IDataSource <CloseableReference <CloseableImage> > FetchDecodedImage(
ImageRequest imageRequest,
object callerContext,
RequestLevel lowestPermittedRequestLevelOnSubmit)
{
try
{
IProducer <CloseableReference <CloseableImage> > producerSequence =
_producerSequenceFactory.GetDecodedImageProducerSequence(imageRequest);
return(SubmitFetchRequest(
producerSequence,
imageRequest,
lowestPermittedRequestLevelOnSubmit,
callerContext));
}
catch (Exception exception)
{
return(DataSources.ImmediateFailedDataSource <CloseableReference <CloseableImage> >(exception));
}
}
public Handler(RequestLevel level)
{
HandlerLevel = level;
}
public Request(RequestLevel level, string msg)
{
reqLevel = level;
message = msg;
}
private IEnumerator GetRes_Cor(string abName, string fileName, Action <UnityEngine.Object> func, RequestLevel level = RequestLevel.Low)
{
//目标资源请求
ResourceRequest resourceRequest = new ResourceRequest();
//print("70------>" + loadedABClass.ContainsKey(abName));
//如果当前包名存在loadedABClass ,减少反复的LoadFromFileAsync
if (loadedABClass.ContainsKey(abName))
{
//直接就从以获取包名中获得封装AB包
//设置等待，当第一次加载成功后再继续
while (loadedABClass[abName] == null)
{
//print("loading " + abName+" "+ loadedABClass[abName]);
yield return(new WaitForEndOfFrame());
}
//print(loadedABClass[abName]);
var myab = loadedABClass[abName];
resourceRequest.abName = abName;
resourceRequest.fileName = fileName;
resourceRequest.func = func;
resourceRequest.level = level;
resourceRequest.resourceAB = myab;
}
//当前没加载过这个包
else
{
//某个ab包占位，开始加载
loadedABClass.Add(abName, null);
//TODO加载所有依赖包
//根据传进来的ab包名 加载ab包
AssetBundleCreateRequest abRequest = AssetBundle.LoadFromFileAsync(fileMain + abName);
// print(fileMain + abName);
//等待协程返回
yield return(abRequest);
if (abRequest.assetBundle == null)
{
//停止协程--没有加载到ab包
Debug.LogError("加载失败，没有找到对应的ab包");
yield break;
}
//该请求的request对象封装
resourceRequest.abName = abRequest.assetBundle.name;
resourceRequest.fileName = fileName;
resourceRequest.func = func;
resourceRequest.level = level;
resourceRequest.resourceAB = new ResourceABClass(abRequest.assetBundle);
//将当前加载成功的ab包，放入dic维护，下次可以直接使用
//print("112----->" + abName);
loadedABClass[abName] = new ResourceABClass(abRequest.assetBundle);
//print("115------>" + loadedABClass.ContainsKey(abName));
//新建一个资源加载请求
//--print(request.assetBundle.name);
//将资源加载请求resourceRequest放到资源中心队列中 根据优先等级
}
if (level == RequestLevel.High)
{
resourceRequests_high.Enqueue(resourceRequest);
}
else
{
resourceRequests_low.Enqueue(resourceRequest);
}
yield break;
}
/// <summary>
/// 根据ab包名获取对应的文件资源——高级
/// </summary>
/// <param name="abName">包名</param>
/// <param name="fileName">文件名</param>
/// <param name="func">回调函数</param>
public void GetResource(string abName, string fileName, Action <UnityEngine.Object> func, RequestLevel level = RequestLevel.Low)
{
//
StartCoroutine(GetRes_Cor(abName, fileName, func, level));
}
