Day 5. 在设置Unity VR环境时遇到的问题，以及不存在的解法Q

Warning与error直扑而来XDD

蛮头痛的，我目前遇到的有两个问题被回报为Bug。

简单来说，我现在的目标是让HMD Mock可以顺利地在没有头盔的情况下，模拟VR的操作输入。
　
　

1. 软硬体配备：

Mac 10.15.5
Unity 2020.3.14f1
　
　

2. 专案设定：

3D Project

设定部分

Project Setting:
- XR Plug-in Management: 勾选PC, Mac & Linux Standalone的Mock HMD Loader
- Quality: Pixel Light Count = 1, 取消Soft Particles
- *1Preset Manager: Preset XRI Default Left/Right Controller，并分别加入Left/Right Filter
- Player: Other Settings > Configuration > Active Input Handling = Both
- Package Manager: 勾选Enable Preview Packages
Package Manager:
- 安装XR Plugin Management
- 安装XR Interaction Toolkit，并import Default Input Actions 和 XR Device Simulator

场景内置

Hierarchy:
- Main Camera: Inspector的Position&Rotation重置为全0
- 放入XR Device Simulator
- 创建XR Rig:
  - 浏览Assets/Samples/XR Interaction Toolkit/1.0.0-pre.6/Default Input Action，将XRI Default Left/Right Controller Add to ActionBasedController default -> *1去设定Preset Manager
  - XR Rig Add Component: Input Action Manager，并把XRI Default Input Actions加入至Input Aciton Manager的Action Assests List里

3. 遇到的Bug

(1) 三角形!`Invalid AssetDatabase path: /Assets/Samples/XR Interaction Toolkit/1.0.0-pre.6/Default Input Actions. Use path relative to the project folder.`

UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

import Default Input Actions 和 XR Device Simulator遇到的错误。
　
　
　

(2) 只要勾选Mock HMD Loader，在PlayMode下，切回Scene会闪烁黑屏

已知Unity Community有此讨论：
[Bug] Flickering shadow issue
　
　
　

(3) 按照参考影片做完後，在PlayMode下可看到Controller，但按下keyboard或移动滑鼠皆无任何反应

Console没有任何讯息
　
　
　

(4) 如果将XR Rig的Input Action Manager的Action Assests换成XR Device Simulator Controls，则Console会出现以下三角形!，貌似都是有关XR Interaction toolkit的讯息

'Enable Input Tracking' is enabled, but Position and/or Rotation Action is disabled. The pose of the controller will not be updated correctly until the Input Actions are enabled. Input Actions in an Input Action Asset must be explicitly enabled to read the current value of the action. The Input Action Manager behavior can be added to a GameObject in a Scene and used to enable all Input Actions in a referenced Input Action Asset.
UnityEngine.XR.Interaction.Toolkit.XRBaseController:Update () (at Library/PackageCache/[email protected]/Runtime/Interaction/Controllers/XRBaseController.cs:300)
'Enable Input Actions' is enabled, but Select, Activate, and/or UI Press Action is disabled. The controller input will not be handled correctly until the Input Actions are enabled. Input Actions in an Input Action Asset must be explicitly enabled to read the current value of the action. The Input Action Manager behavior can be added to a GameObject in a Scene and used to enable all Input Actions in a referenced Input Action Asset.
UnityEngine.XR.Interaction.Toolkit.XRBaseController:Update () (at Library/PackageCache/[email protected]/Runtime/Interaction/Controllers/XRBaseController.cs:300)
'Enable Input Tracking' is enabled, but Position and/or Rotation Action is disabled. The pose of the controller will not be updated correctly until the Input Actions are enabled. Input Actions in an Input Action Asset must be explicitly enabled to read the current value of the action. The Input Action Manager behavior can be added to a GameObject in a Scene and used to enable all Input Actions in a referenced Input Action Asset.
UnityEngine.XR.Interaction.Toolkit.XRBaseController:Update () (at Library/PackageCache/[email protected]/Runtime/Interaction/Controllers/XRBaseController.cs:300)
'Enable Input Actions' is enabled, but Select, Activate, and/or UI Press Action is disabled. The controller input will not be handled correctly until the Input Actions are enabled. Input Actions in an Input Action Asset must be explicitly enabled to read the current value of the action. The Input Action Manager behavior can be added to a GameObject in a Scene and used to enable all Input Actions in a referenced Input Action Asset.
UnityEngine.XR.Interaction.Toolkit.XRBaseController:Update () (at Library/PackageCache/[email protected]/Runtime/Interaction/Controllers/XRBaseController.cs:300)