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Update README about WaitForEndOfFrame

pull/496/head
hadashiA 2023-09-08 18:00:39 +09:00
parent c65f9c3497
commit ffbadbcc4c
1 changed files with 8 additions and 1 deletions
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README.md
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@ -86,8 +86,13 @@ async UniTask<string> DemoAsync()
await UniTask.Yield(); await UniTask.Yield();
await UniTask.NextFrame(); await UniTask.NextFrame();
// replacement of WaitForEndOfFrame(requires MonoBehaviour(CoroutineRunner)) // replacement of WaitForEndOfFrame
#if UNITY_2023_1_OR_NEWER
await UniTask.WaitForEndOfFrame();
#else
// requires MonoBehaviour(CoroutineRunner))
await UniTask.WaitForEndOfFrame(this); // this is MonoBehaviour await UniTask.WaitForEndOfFrame(this); // this is MonoBehaviour
#endif
// replacement of yield return new WaitForFixedUpdate(same as UniTask.Yield(PlayerLoopTiming.FixedUpdate)) // replacement of yield return new WaitForFixedUpdate(same as UniTask.Yield(PlayerLoopTiming.FixedUpdate))
await UniTask.WaitForFixedUpdate(); await UniTask.WaitForFixedUpdate();
@ -499,6 +504,8 @@ It indicates when to run, you can check [PlayerLoopList.md](https://gist.github.
`PlayerLoopTiming.Update` is similar to `yield return null` in a coroutine, but it is called before Update(Update and uGUI events(button.onClick, etc...) are called on `ScriptRunBehaviourUpdate`, yield return null is called on `ScriptRunDelayedDynamicFrameRate`). `PlayerLoopTiming.FixedUpdate` is similar to `WaitForFixedUpdate`. `PlayerLoopTiming.Update` is similar to `yield return null` in a coroutine, but it is called before Update(Update and uGUI events(button.onClick, etc...) are called on `ScriptRunBehaviourUpdate`, yield return null is called on `ScriptRunDelayedDynamicFrameRate`). `PlayerLoopTiming.FixedUpdate` is similar to `WaitForFixedUpdate`.
> `PlayerLoopTiming.LastPostLateUpdate` is not equivalent to coroutine's `yield return new WaitForEndOfFrame()`. Coroutine's WaitForEndOfFrame seems to run after the PlayerLoop is done. Some methods that require coroutine's end of frame(`Texture2D.ReadPixels`, `ScreenCapture.CaptureScreenshotAsTexture`, `CommandBuffer`, etc) do not work correctly when replaced with async/await. In these cases, pass MonoBehaviour(coroutine runnner) to `UniTask.WaitForEndOfFrame`. For example, `await UniTask.WaitForEndOfFrame(this);` is lightweight allocation free alternative of `yield return new WaitForEndOfFrame()`. > `PlayerLoopTiming.LastPostLateUpdate` is not equivalent to coroutine's `yield return new WaitForEndOfFrame()`. Coroutine's WaitForEndOfFrame seems to run after the PlayerLoop is done. Some methods that require coroutine's end of frame(`Texture2D.ReadPixels`, `ScreenCapture.CaptureScreenshotAsTexture`, `CommandBuffer`, etc) do not work correctly when replaced with async/await. In these cases, pass MonoBehaviour(coroutine runnner) to `UniTask.WaitForEndOfFrame`. For example, `await UniTask.WaitForEndOfFrame(this);` is lightweight allocation free alternative of `yield return new WaitForEndOfFrame()`.
>
> Note: In Unity 2023.1 or newer, `await UniTask.WaitForEndOfFrame();` no longer requires MonoBehaviour. It uses `UnityEngine.Awaitable.EndOfFrameAsync`.
`yield return null` and `UniTask.Yield` are similar but different. `yield return null` always returns next frame but `UniTask.Yield` returns next called. That is, call `UniTask.Yield(PlayerLoopTiming.Update)` on `PreUpdate`, it returns same frame. `UniTask.NextFrame()` guarantees return next frame, you can expect this to behave exactly the same as `yield return null`. `yield return null` and `UniTask.Yield` are similar but different. `yield return null` always returns next frame but `UniTask.Yield` returns next called. That is, call `UniTask.Yield(PlayerLoopTiming.Update)` on `PreUpdate`, it returns same frame. `UniTask.NextFrame()` guarantees return next frame, you can expect this to behave exactly the same as `yield return null`.