Epic Games launches Unreal Engine 4.20

Epic Games has introduced Unreal Engine 4.20, which allows developers to build even more realistic characters and immersive environments across games, film and TV, VR/AR/MR and enterprise applications. The Unreal Engine 4.20 release combines the latest realtime rendering advancements with improved creative tools, making it even easier to ship games across all platforms. With hundreds of optimizations, especially for iOS, Android and Nintendo Switch — which have been built for Fortnite and are now rolled into Unreal Engine 4.20 and released to all users — Epic is providing developers with the scalable tools they need for these types of projects.

Artists working in visual effects, animation, broadcast and virtual production will find enhancements for digital humans, VFX and cinematic depth of field, allowing them to create realistic images across all forms of media and entertainment. In the enterprise space, Unreal Studio 4.20 includes upgrades to the UE4 Datasmith plugin suite, such as SketchUp support, which make it easier to get CAD data prepped, imported and working in Unreal Engine.

Here are some key features of Unreal Engine 4.20:

A new proxy LOD system: Users can handle sprawling worlds via UE4’s production-ready Proxy LOD system for the easy reduction of rendering cost due to poly count, draw calls and material complexity. Proxy LOD offers big gains when developing for mobile and console platforms.

A smoother mobile experience: Over 100 mobile optimizations developed for Fortnite come to all 4.20 users, marking a major shift for easy “shippability” and seamless gameplay optimization across platforms. Major enhancements include improved Android debugging, mobile Landscape improvements, RHI thread on Android and occlusion queries on mobile.

Works better with Switch: Epic has improved Nintendo Switch development by releasing tons of performance and memory improvements built for Fortnite on Nintendo Switch to 4.20 users as well.

Niagara VFX (early access): Unreal Engine’s new programmable VFX editor, Niagara, is now available in early access and will help developers take their VFX to the next level. This new suite of tools is built from the ground up to give artists unprecedented control over particle simulation, rendering and performance for more sophisticated visuals. This tool will eventually replace the Unreal Cascade particle editor.

Cinematic depth of field: Unreal Engine 4.20 delivers tools for achieving depth of field at true cinematic quality in any scene. This brand-new implementation replaces the Circle DOF method. It’s faster, cleaner and provides a cinematic appearance through the use of a procedural bokeh simulation. Cinematic DOF also supports alpha channel and dynamic resolution stability, and has multiple settings for scaling up or down on console platforms based on project requirements. This feature debuted at GDC this year as part of the Star Wars “Reflections” demo by Epic, ILMxLAB and Nvidia.

Digital human improvements: In-engine tools now include dual-lobe specular/double Beckman specular models, backscatter transmission in lights, boundary bleed color subsurface scattering, iris normal slot for eyes and screen space irradiance to build the most cutting-edge digital humans in games and beyond.

Live record and replay: All developers now have access to code from Epic’s Fortnite Replay system. Content creators can easily use footage of recorded gameplay sessions to create incredible replay videos.

Sequencer cinematic updates: New features include frame accuracy, media tracking, curve editor/evaluation and Final Cut Pro 7 XML import/export.

Shotgun integration: Shotgun, a production management and asset tracking solution, is now supported. This will streamline workflows for Shotgun users in game development who are leveraging Unreal’s realtime performance. Shotgun users can assign tasks to specific assets within Unreal Engine.

Mixed reality capture support (early access): Users with virtual production workflows will now have mixed reality capture support that includes video input, calibration and in-game compositing. Supported webcams and HDMI capture devices allow users to pull real-world greenscreened video into the engine, and supported tracking devices can match your camera location to the in-game camera for more dynamic shots.

AR support: Unreal Engine 4.20 ships with native support for ARKit 2, which includes features for creating shared, collaborative AR experiences. Also included is the latest support for Magic Leap One, Google ARCore 1.2 support.

Metadata control: Import metadata from 3ds Max, SketchUp and other common CAD tools for the opportunity to batch process objects by property, or expose metadata via scripts. Metadata enables more creative uses of Unreal Studio, such as Python script commands for updating all meshes of a certain type, or displaying relevant information in interactive experiences.

Mesh editing tools: Unreal Engine now includes a basic mesh editing toolset for quick, simple fixes to imported geometry without having to fix them in the source package and re-import. These tools are ideal for simple touch-ups without having to go to another application. Datasmith also now includes a base Python script that can generate Level of Detail (LOD) meshes automatically.

Non-destructive re-import: Achieve faster iteration through the new parameter tracking system, which monitors updates in both the source data and Unreal Editor, and only imports changed elements. Previous changes to the scene within Unreal Editor are retained and reapplied when source data updates.


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