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Lighting and Shadows
- Full-scene dynamic lighting and shadows.
- Point, spot, and infinite light sources.
- 2D and cubic texture projections.
- Conventional and cascaded shadow mapping.
- Highly robust stencil shadow volumes.
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World Editor
- World editor runs as an engine plugin and uses the engine's own user interface system.
- Powerful and intuitive interface design that allows fast level creation.
- Zero build time, so results are immediately visible while editing a level.
- Includes a large variety of tool palettes.
- Support for multiple undo.
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Shaders
- Large variety of built-in shading features.
- Support for arbitrary custom cross-platform shaders.
- Latest 3D hardware features are used by the engine.
- Comprehensive bump/normal mapping capabilities.
- Parallax bump texture mapping.
- Horizon bump shadow mapping.
- Bumpy reflection and refraction.
- Cook-Torrance microfacet shading.
- Ambient lighting volumes.
- Cube environment reflections.
- Realistic water shading.
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Shader Editor
- Custom shaders are edited graphically and work on all platforms without modification.
- A wide variety of packaged components are provided for easy shader design.
- Shaders automatically work with all types of light sources and atmospheric effects without having to explicitly create variations.
- Painting features provide spatially parameterized inputs to shaders so that material variation can be painted into the scene.
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Voxel Terrain
- Terrain is based on voxel maps that can be edited in real time.
- Direct support for vertical cliffs, overhangs, caves, arches, etc., that are impossible with height-based terrain systems.
- Seamless levels of detail are automatically created using our exclusive multiresolution Transvoxel™ stitching technology.
- Editor provides sculpting and texture painting tools.
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Script Editor
- Scripts are edited graphically for easy artist/designer access.
- Games can easily define custom script components, and these automatically appear in the editor.
- Controllers can advertise custom function calls that can be accessed from scripts.
- Scripts support variables, looping, and conditional execution, all shown in a concise graphical manner.
- Support for arbitrary expression evaluation in scripts.
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Special Effects
- Full-scene cinematic motion blur.
- Distortion effects such as heat haze and shockwaves.
- High-quality and high-performance procedural fire effects.
- Volumetric fog with multiple density functions.
- Interactive in-game interface panels.
- Fully extensible particle systems.
- Voxel-based blob (metaball) particle systems.
- Surface markings on arbitrary geometry.
- Emission glow and specular bloom effects.
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User Interface / Panels
- Built-in user interface system includes windows, buttons, menus, scroll bars, icons, list boxes, sliders, etc.
- Complete support for Unicode text rendering and user input.
- Fully interactive in-game interface panels can be created graphically in a panel editor.
- Custom scripts can be attached to panel items for limitless interactivity.
- Panels have an extensible animation system with many built-in techniques.
- Proprietary cross-platform movie format can be used to play movies to windows or panels.
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World Manager / Scene Graph
- Clean class hierarchy for scene graph nodes, including geometries, cameras, lights, sounds, zones, portals, triggers, markers, and special effects.
- State-of-the-art portal system used for indoor visibility determination and lighting analysis.
- High-quality impostor system for rendering large numbers of instanced objects like trees with fully dynamic lighting and shadows.
- General state serialization support for saving worlds.
- Quicksave and quickload capabilities for fast delta saves during gameplay.
- Separation between per-instance and shared data.
- External world referencing / instancing (for prefabs, etc.). Nested worlds supported.
- Powerful hierarchical animation blending system.
- Full skeletal hierarchy support for skinned meshes.
- Extensible controller design with tool integration.
- Substance registration system for identifying stone, metal, wood, etc.
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Art Pipeline / Tools
- Support for the Collada scene format, enabling models to be imported from 3D Studio MAX, Maya, XSI, Blender, and other content creation packages.
- Collada importer can automatically import textures and merge materials with existing scene.
- Textures imported from TGA format, (16/24/32-bit with or without compression).
- Texture tool generates mipmaps and applies S3TC compression.
- Normal maps, parallax maps, horizon maps, and ambient occlusion channels calculated by texture tool.
- Font generator creates Unicode font textures from system fonts. (Windows and Mac only.)
- Resource packer utility generates PAK files to optimize and conceal resource access.
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Physics
- Built-in fully integrated physics library.
- Rigid body simulation.
- Real-time cloth simulation.
- Real-time large-scale fluid surface simulation.
- Continuous collision detection.
- Contact forces and friction.
- Precise buoyancy forces.
- Customizable force fields.
- Joints (spherical, universal, discal, revolute, cylindrical, and prismatic).
- Full networking support.
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Input Devices
- Generic treatment of keyboards and mice.
- Broad support for USB devices such as joysticks, gamepads, steering wheels, etc.
- Direct support for Xbox 360 controllers under Windows.
- Events reported to game through an action binding system.
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Audio
- Fully spatialized 3D sound effects.
- Doppler shift and other frequency effects.
- Reverberation with multiple simultaneous environments.
- Atmospheric absorption effects.
- Directional sounds with cone attenuation.
- Obstruction attenuation applied to direct and reflected paths.
- Frequency-dependent volume settings for all effects.
- Permeation system determines how far sounds travel through interiors.
- Unlimited streaming music channels with seamless looping and concatenation.
- Audio capture capabilities.
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Core System
- Cross-platform multiprocessor / multithreading support.
- Resource management with support for pack files and caching.
- Containers library (arrays, lists, maps, trees, graphs).
- Mathematics and geometry library.
- Extensible system commands and variables.
- Tool module plugin architecture.
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Networking
- Fast, reliable network implementation using UDP/IP.
- Solid fault tolerance and hacker resistance.
- Advanced security measures, including packet encryption.
- Automatic routing of messages to object controllers.
- Support for different delivery types (reliable, unrelaible, unordered).
- Extensible and customizable message classes.
- Supports heterogeneous clients—PCs, Macs, and consoles can all be connected to the same game.
- Cross-platform internet voice chat.
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Plugins
- Browser plugin, based on Awesomium, can display and interact with web browsers in user interfaces. (Windows only.)
- Logitech plugin can display images on G15 keyboards. (Windows only.)
- Plugins can depend on other plugins and load in the correct order.
- Game modules can depend on plugins.
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