想做遊戲但不知從哪開始，Unity能幫你什麼

What's new in this version:

Fixes:
- 2D: Fixed animation has incorrect dependency on UnityEngine.XR.WSA.Input
- 2D: Fixed ArgumentException errors are thrown when 2D Game Kit is imported for the first time
- 2D: Fixed ArgumentException when applying Sprite Import settings with mosaic property unchecked
- 2D: Fixed BakeCollider requires GC every frame even when there are no changes in SpriteShape
- 2D: Fixed exception thrown continuously when Undo operation is performed with sprites are assigned earlier
- 2D: Fixed NullReferenceException on creating Prefab with SpriteSkin
- 2D: Fixed NullReferenceException when creating Preset for SpriteSkin component
- 2D: Fixed Skinning Module flickers when creating new category in Visibility Window
- 2D: SpriteAtlasManager late binding crash
- 2D: [Sprite Atlas] atlasRequested callback does not trigger after unloading and loading sprite atlas
- AI: Resolves an issue where NavMeshQuery::Raycast could get stuck in an infinite loop if the NavMesh contains degenerate polygons
- Asset Pipeline: Fix a crash that can occur when downloading non primary artifacts from cache server
- Asset Pipeline: Fixes editor hang after getting disconnected and quickly reconnected to cache server
- DX12: 8 Multi-RenderTarget gives Assert error d3d12: querying for an out-of-bounds color surface
- DX12: Editor crashes when shader global constant buffer exceeds 64kB on dx12
- DX12: Editor crashes when using ProBuilder in Vertex Edit mode View on Crashes HQ with HDRP/DXR
- DX12: Texture2DArray MSAA resolve is broken on d3d12
- Editor: corrects keycode mappings in play mode by only using gdk keyvals to map to sdlk values
- Editor: Fixed an issue where Inspector window is not updated when multiple assets from the Project window are deselected/selected.
- Editor: Fixed Editor crashes when unlocking Inspector with PropertyInfo.SetValue function.
- Editor: Fixed Mac OpenGL editor causing a kernel panic on Intel Graphics
- Editor: Fixed NullReferenceException when changing Asset serialization mode
- Editor: fixes crash on drag and drop from a closing window
- Editor: Renamed themes to Light and Dark now that they are available irrespective of license
- Editor: Update Collab packag
- GI: Fix Static Analysis Defect 53214 (Potentially overflowing expression in RRBakeLightProbesTechnique.cpp)
- GI: Fixed erroneous logic for resolving shadowmask texture format
- Graphics: fixed readback from temporary RT not working on metal
- Graphics: Metal: Fix shader compiler warnings that could appear on macOS 11 Big
- Graphics: SkinnedMeshRenderer.BakeMesh now bakes cloth changes into the target Mesh
- GraphView: Addressed some issues with heterogeneous selections involving stack nodes and disabled a
- iOS: Fixed unintended storyboard rotation if device changes orientation during initial application loading.
- Kernel: Fixed an editor crash in the Jobs Debugger which could happen when using the Hybrid renderer.
- Linux: Reduced polling frequency for stale Editor windows
- Package Manager: Added support for External symbols on a platform that required it
- Package Manager: Don't prints message in console when user cancels "Add package from disk" dialog
- Package Manager: Fixed a potential error when running the linker with a failure on lld command.
- Package Manager: Fixed an issue where Git dependencies could cause UPM to hang when using SSH with a passphrase-protected private key without setting up an SSH authentication agent.
- Package Manager: Fixed Debug.Log by re-enabling it when used in function pointers or jobs
- Package Manager: Fixed errors when opening Inspector with a non-public Execute method on a job producer type
- Package Manager: If path to the package contained spaces, then native command execution could fail. This would manifiest as weird errors with 'lld' or 'vswhere' or other native tools.
- Prefabs: Fixed SerializableObject.GetIterator() throws ArgumentNullException when UnpackPrefabInstance() is called on an instantiated Prefab in Inspector logic
- Profiler: Fixed an issue where attempting to order a set of filtered samples by either time or size in either Hierarchy or Raw Hierarchy would cause all the items to disappear
- Profiler: Fixed an issue where PackedMemorySnapshot.nativeObjects.gcHandleIndex would always return -1 due to not reporting the correct managed object address during processing
- Profiler: Fixed an issue with the memory profilers type metadata where some fields would be skipped due to types failing to be reported
- Scripting: Build incompatible custom assemblies with a dirty predefined assembly ref should not be compiled
- Scripting: Correct file sharing for exFAT partitions on macOS
- Scripting: Fix unlimited warnings to Editor.log using all disk space
- Scripting: Fixed crash that would occur when an exception was thrown during the initialization of a custom attribute
- Scripting: Fixed hang that would occur when a Debugger.Break was in the accessor of a field
- Scripting: Fixed NotImplementedException when accessing X509Chain.ChainStatus in certificate validation callback
- Scripting: Include Defines in Response Files(csc.rsp) for Define Constraints
- Serialization: Fixed data loss that could occur when serializing string arrays where elements started with the character ':'
- Serialization: Restore arrays from null serialized properties backport
- UI: Fixed canvas drawing multiple times per frame when OnDemandRendering.renderFrameInterval is more than 1.
- UI Toolkit: Fix LongField binding
- UI Toolkit: Fixed Label tooltip behavior when text value can change while elided
- UI Toolkit: Fixed TextElements that generates more than 16k vertices cause IndexOutOfRangeException on vertex buffers
- Fixed UI Toolkit leaks memory when new large mesh is allocated via MeshGenerationContext
- Fixed Small visual regressions
- Universal Windows Platform: Fixed incorrect warning saying that BC7 texture format is not supported on UWP when in fact it is
- Universal Windows Platform: Fixed Unity crashing after initializing it second time if splashscreen is enabled
- Universal Windows Platform: Work around MSBuild issue when building UWP AppxBundles from the command line
- Web: UnityWebRequest: fix hang or crash on iOS (upload/abort related)
- Windows: Fix Shift key not reporting in GUI Event.keyCode property
- XR: Added option to always discard depth after rendering

API Changes:
- iOS: Removed: Removed the breaking interface change to IUserProfile (gameID)

Changes:
- Package Manager: Asserts that are currently discarded no longer discard arguments with potential side effects
- Package Manager: Automatically add embedded package files to the version control system
- Package Manager: Bump com.unity.mathematics to 1.2.1 version
- Timeline: Updated Timeline package to version 1.3.5

Improvements:
- Editor: Update Polybrush to 1.0.2
- Package Manager: Added support for returning enterprise entitlement packages from the PackageManager.Client.SearchAll() method. These packages will now show in the Package Manager UI Unity Registry section when users have the entitlement to use them.
- Serialization: Increased the allowed serialization depth to allow larger, more complex data models to be serialized