### 2019.1.9f1 Release Notes #### System Requirements Changes Nothing changed. #### Backwards Compatibility Breaking Changes * Asset Import: Added a warning when multiple sub-assets are imported with the same name/type. This often happen in the ModelImporter when multiple meshes or material have the same name in the .fbx file. Their resulting fileID (and thus references to them) may break/change if a new sub-asset witht he same name is found before the existing one after a re-import. #### Fixes * Animation: Fixed prefab import of animator with dangling references. ([1154048](https://issuetracker.unity3d.com/issues/unityscene-addroottoscene-crashes-when-importing-a-prefab), 1160255) * Asset Import: Fixed a crash in the Sketchup Importer with specific .skp files. ([1152480](https://issuetracker.unity3d.com/issues/editor-crashes-after-importing-big-skp-file), 1158399) * Asset Import: Fixed models imported into Unity before 2019.1 with meshes that don't have a name not conserving their Local IDs and references to them being lost. ([1147902](https://issuetracker.unity3d.com/issues/prefabs-lose-references-to-unnamed-meshes-after-upgrading-the-project-to-2019-dot-1-0a10-and-above), 1160478) * Audio: Fixed send value propagation in mixer. ([1150703](https://issuetracker.unity3d.com/issues/audio-mixer-group-duck-volume-effect-does-not-receive-signal-input-when-sending-signal-from-another-audio-mixer-group), 1166920) * Audio: Fixed setting already-scaled curves on audio sources. ([1152137](https://issuetracker.unity3d.com/issues/animation-curve-on-the-audio-source-is-copied-with-an-offset-when-using-getcustomcurve-and-setcustomcurve-methods), 1166921) * Audio: Fixed Unity crashing at AudioScriptBufferManager::GetPCMReadArray while recompiling script in play mode. ([884965](https://issuetracker.unity3d.com/issues/unity-crashes-at-audioscriptbuffermanager-getpcmreadarray-while-recompiling-script-in-play-mode), 1162741) * Editor: Fixed a bug where scene root objects were not properly taken into account for Scene SceneVis state when they had hideflags set. ([1156127](https://issuetracker.unity3d.com/issues/gameobjects-with-hideflags-dot-hideinhierarchy-prevent-scene-visibility-from-being-toggled-back-on), 1158020) * Editor: Fixed crash on quit in UNITY\_FT\_Done\_Face when using large prefab with TextMesh. (1075972, 1140678) * Editor: Fixed false-positive for multiple audio listeners when editing prefabs. ([1152491](https://issuetracker.unity3d.com/issues/console-spams-thousands-of-logs-when-audio-listener-exists-in-scene-and-prefab-view), 1166915) * Editor: Fixed stop button in audio clip preview panel. ([1154598](https://issuetracker.unity3d.com/issues/audiosource-continues-to-play-after-being-stopped-in-preview-window), 1166913) * Graphics: Fixed a tessellation crash issue with Intel 4000 GPU and fencing. ([1158299](https://issuetracker.unity3d.com/issues/mac-shader-importing-tessellation-shaders-on-mac-with-metal-graphic-api-leads-to-editor-crash), 1159313) * Graphics: Fixed crash that can occur when accessing the MeshFilter.mesh property when the mesh is loaded via the async upload manager. ([1124524](https://issuetracker.unity3d.com/issues/standalone-player-crashes-when-accessing-mesh-filter-of-mesh-that-has-read-slash-write-disabled), 1158403) * Graphics: Fixed editor throwing "d3d12: CreateGraphicsPipelineState failed." error when switching Graphics API to DX12. ([1122343](https://issuetracker.unity3d.com/issues/hdrp-editor-throws-the-d3d12-creategraphicspipelinestate-failed-dot-error-when-switching-graphics-api-to-dx12), 1125321) * Graphics: Fixed OpenGL 4.2 rendering the editor pink. ([1146762](https://issuetracker.unity3d.com/issues/shader-editor-is-fully-pink-if-launched-on-opengl-4-dot-2), 1150531) * Hub: Fixed two identical HDRP templates are shown in new project creation when selecting 2019.1.8f1 or 2019.1.7f1 version. ([1164282](https://issuetracker.unity3d.com/issues/hub-two-identical-hdrp-templates-are-shown-in-new-project-creation-when-selecting-2019-dot-1-8f1-or-2019-dot-1-7f1-version)) * IL2CPP: Added support for NamedPipeClientStream on Windows platforms. ([1159863](https://issuetracker.unity3d.com/issues/il2cpp-notimplementedexception-is-thrown-when-use-system-dot-io-dot-pipes), 1160511) * Linux: Fixed Linux Standalone Player touch events for IMGUI. ([1106839](https://issuetracker.unity3d.com/issues/linux-standalone-player-not-receiving-touch-events), 1142854) * OSX: Fixed jitter from magic mouse and trackpad input on ScrollView component. (1144634, 1150397) * Particles: Fixed editor crashes with WorldCollision when Spawning Particles. ([1155477](https://issuetracker.unity3d.com/issues/editor-crashes-with-worldcollision-when-spawning-particles), 1162838) * Particles: Fixed Particle System sorting unstable when Sort Mode is set to By Distance. ([1154497](https://issuetracker.unity3d.com/issues/particle-system-sorting-is-unstable-when-sort-mode-is-set-to-by-distance), 1162835) * Particles: Fixed Particle System trails changing their size randomly when there is a Realtime Reflection Probe in the Scene. ([1117520](https://issuetracker.unity3d.com/issues/particle-system-trails-brakes-when-using-certain-trail-parameters-while-having-a-realtime-reflection-probe-in-the-scene), 1162818) * Particles: Fixed Particle Systems being scaled incorrectly when using Velocity render alignment. ([1149730](https://issuetracker.unity3d.com/issues/particle-systems-are-rendered-in-significantly-lower-resolution-when-scaled), 1162832) * Particles: Fixed some ParticleSystems using the wrong texture when several of them are being rendered with different Textures. ([1148610](https://issuetracker.unity3d.com/issues/some-particlesystems-use-the-wrong-texture-when-several-of-them-are-being-rendered-with-different-textures), 1162829) * Prefabs: Fixed prefabs lose references to unnamed meshes after upgrading the project to 2019.1.0a10 and above. ([1147902](https://issuetracker.unity3d.com/issues/prefabs-lose-references-to-unnamed-meshes-after-upgrading-the-project-to-2019-dot-1-0a10-and-above), 1160478) * SceneManager: Disabled editing the name of the root GameObject of a Prefab Asset. ([1146439](https://issuetracker.unity3d.com/issues/cannot-rename-prefabs-via-the-inspector-when-they-are-selected-in-project-view), 1155975) * SceneManager: Fixed editor freezing if error is thrown while modifying multiple Prefab assets. ([1150176](https://issuetracker.unity3d.com/issues/improved-prefabs-editor-freezes-after-applying-an-original-prefab-as-a-child-through-override-window), 1155979) * SceneManager: Fixed editor preference behavior to only update modified values in the plist file on MacOS. ([1117481](https://issuetracker.unity3d.com/issues/osx-some-editorprefs-properties-are-deleted-when-running-and-closing-multiple-instances-of-unity-at-the-same-time), 1154215) * SceneManager: Fixed undo of prefab asset after using Apply All from the overrides dropdown. ([1150496](https://issuetracker.unity3d.com/issues/improved-prefabs-duplicate-prefab-gets-created-when-undo-is-pressed-after-applying-override-to-nested-prefabs), 1155978) * Scripting Upgrade: Fixed crash during Asset GC with large managed collections. ([1137077](https://issuetracker.unity3d.com/issues/editor-silent-crash-when-attempting-to-load-a-new-scene-after-allocating-data), 1144681) * Scripting Upgrade: Fixed crash during async debugging. ([1153078](https://issuetracker.unity3d.com/issues/debugging-unity-c-number-code-containing-async-slash-await-breaks-debugger-and-causes-editor-to-crash), 1162262) * Scripting Upgrade: Fixed incorrect ServicePointManager DefaultConnectionLimit. ([1156607](https://issuetracker.unity3d.com/issues/il2cpp-player-has-incorrect-servicepointmanager-dot-defaultconnectionlimit), 1158687) * Version Control: Fixed Prefab Editor overwriting files which are exclusively checked out in Version Control. ([1027165](https://issuetracker.unity3d.com/issues/vcs-files-exclusively-checked-out-by-remote-client-are-still-written-on-save), 1150746) * XR: Fixed Render Viewport Scale Jitter when render viewport scale changes continuously. ([1153261](https://issuetracker.unity3d.com/issues/xr-render-viewport-scale-jitter-when-render-viewport-scale-changes-continuously), 1159974) #### System Requirements ##### For development **OS**: Windows 7 SP1+, 8, 10, 64-bit versions only; macOS 10.12+. (Server versions of Windows & OS X are not tested.) **CPU**: SSE2 instruction set support. **GPU**: Graphics card with DX10 (shader model 4.0) capabilities. The rest mostly depends on the complexity of your projects. ###### Additional platform development requirements: * iOS: Mac computer running minimum macOS 10.12.6 and Xcode 9.4 or higher. * Android: Android SDK and Java Development Kit (JDK); IL2CPP scripting backend requires Android NDK. * Universal Windows Platform: Windows 10 (64-bit), Visual Studio 2015 with C++ Tools component or later and Windows 10 SDK ##### For running Unity games Generally content developed with Unity can run pretty much everywhere. How well it runs is dependent on the complexity of your project. More detailed requirements: * Desktop: * OS: Windows 7 SP1+, macOS 10.12+, Ubuntu 12.04+, SteamOS+ * Graphics card with DX10 (shader model 4.0) capabilities. * CPU: SSE2 instruction set support. * iOS player requires iOS 9.0 or higher. * Android: OS 4.1 or later; ARMv7 CPU with NEON support or Atom CPU; OpenGL ES 2.0 or later. * WebGL: Any recent desktop version of Firefox, Chrome, Edge or Safari. * Universal Windows Platform: Windows 10 and a graphics card with DX10 (shader model 4.0) capabilities