Install this version with Unity Hub.
Select the runtime platforms of your choice from the list below (the desktop runtime is included as standard) or, to install the full complement of runtime platforms, use the download assistant installer above.
Known Issues in 2021.1.27f1
Android: Sometimes text is not rendered when using OpengLES3 on a Xiaomi Redmi9A device. (1347186)
Asset Bundles: Building process of the AssetBundles is slow when there is a huge filecount. (1358059)
Asset Importers: [MacOS] Second Unity instance in Activity Monitor is "not responding” after importing (1331736)
Global Illumination: Crash while sculpting Terrain and Baking Lightmaps (1266511)
Global Illumination: Scene is brighter in Standalone player if it was open in the Editor at build time (1375015)
Global Illumination: [Enlighten] Fatal Error when closing the Editor while Generating Lighting (1354238)
Global Illumination: [LightProbes] Probes lose their lighting data after entering Play mode when Baked and Realtime GI are enabled (1052045)
Input: Input.GetKey does not trigger when the mouse cursor is outside the Game window (1358134)
Input: Scrolling is jumping when scrolling in the Input Manager (1362327)
Inspector Framework: Long Layer names are not fully visible in the drop-down list when selecting it in the Inspector window from Script component (1366623)
Mobile: [Android] App stops due to OnPixelCopyFinishedListener not being supported on devices with lower than 24 SDK (1331290)
Mono: NullReferenceException causes freeze when thrown in the Player (1364311)
Packman: User can't easily configure location of both UPM and Asset Store package local cache (1317232)
Profiling: Profiler's timeline view loses context frames when frames go out of Frame Count bounds (1367470)
Scene Management: Instantiated FBX through code throws error after leaving Play Mode (1363573)
Scripting: Unity does not execute code weavers when the project is opened for the first time (1350116)
Shader System: Shaders are ignored when executing Build Asset Bundles method from console with -nographics argument (1369645)
uGUI: Poor performance when loading or unloading a large Scene (1375646)
Universal Windows Platform: UnityWebRequest fails on UWP with HTTPS (1375004)
Video: Crash on WindowsVideoMedia::StepAllStreams when reimporting a .m4v file (1340340)
Vulkan: [Editor] The Scene's GameObjects textures are seemingly random and change colours depending on the Scene's Camera pos. (1337772)
Window Management: Broken layout stops panels located in the top left corner of the Editor from rendering in the Karting Microgame project (1367783)
XR SDK: [XR][Linux] Scene View doesn't render when opening new AR or VR Template project or pressing "Show Tutorials" (1362435)
2021.1.27f1 Release Notes
- Scripting: Add GameObject link to Warning message: "SendMessage cannot be called during Awake, CheckConsistency, or OnValidate.".
Shadergraph: Added: ShaderGraph animated preview framerate throttle.
URP: Added: Support for controlling Volume Framework Update Frequency in UI on Cameras and URP Asset as well as through scripting.
- URP: Opacity as Density blending feature for Terrain Lit Shader is now disabled when the Terrain has more than four Terrain Layers. This is now similar to the Height-blend feature for the Terrain Lit Shader.
2D: Fixed an issue where Sprite.texture was null when it's loaded from SpriteAtlas in an AssetBundle and the Play mode was entered from the Prefab mode. (1345723)
Android: Disable cut/copy/paste popup that was appearing on the hidden Android inputfield (1317688)
Android: Fixed a crash when using Application.Quit with Optimized Frame Pacing. (1341467)
Android: Fixed an issue related to using a touchpad with Unity UI scroll rects. Touchpad scrolling iss much more sensitive now on Android and Chrome OS. (1364582)
Asset Pipeline: Fixed an issue where renaming an asset in the Project Browser could cause the selection highlight to disappear. (1351301)
Editor: Fixed an issue where nested property field context menu was not showing apply/revert if only the first property has changes. (1338670)
GI: Fixed a crash when generating lighting which calls print function with incorrect parameters. (1368383)
Graphics: Fixed an issue in SRPs where models appeared white in the preview window. (1297670)
Graphics: Fixed an issue where descriptor sets were not validated properly under certain circumstances for Vulkan. (1300203)
Graphics: Fixed an issue where TextureIDs could leak upon recreating RenderTextures with explicit stencil views. (1365351)
HDRP: Fixed an error when disabling opaque objects on a camera with MSAA.
HDRP: Fixed an issue where diffusion profile was being reset to default on SpeedTree8 materials with subsurface scattering enabled during import.
IL2CPP: Fixed an issue where the profile.json file output by IL2CPP was copied into the final application package for iOS. (1357923)
Particles: Fixed particle face-culling issue when rendering into Cubemaps. (1340494)
Prefabs: Fixed an issue were memory got allocated for GC each frame when using PrefabStageUtility.GetPrefabStage(). (1343935)
Shaders: Fixed a crash when using a non-UAV texture as ComputeShader UAV property. (1365411)
URP: Fixed an issue in Sprite-Lit-Default.shader that caused 2D lighting in perspective to be incorrect. (1315645)
URP: Fixed an issue where camera dimension could be zero. (1321168)
URP: Fixed an issue where depth texture was not available when ScriptableRenderPasses had configured it as input and MSAA were disabled.
URP: Fixed an issue where Opacity as Density blending artifacts on Terrain that that caused Terrain to have modified splat weights of zero in some areas and greater than one in others.
URP: Fixed an issue where the 2D Renderer was not rendering depth and stencil in the normal rendering pass. (1259874)
URP: Fixed an issue where UniversalRenderPipeineAsset could not use multi-edit.
VFX Graph: Fixe a potential infinite compilation when using subgraphs. (1346576)
VFX Graph: Fixed an issue where serialization of VFX assets were out of sync that caused the asset to be dirtied without reason.
VFX Graph: Fixed an issue where th extract position from a transform was wrong on GPU. (1353533)
VFX Graph: Fixed rendering artifacts on some mobile devices issue. (1149057)
VFX Graph: Fixed undetermitism in space with LocalToWorld and WorldToLocal operators. (1355820)
Virtual Texturing: Fixed a issue where VT-only textures were rendered as default color in the Player when VT was disabled. (1280281)
XR: Fixed a single-pass stereo state after shadow map rendering issue. (1335518)