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Urho3D Rebel Fork aka rbfx is an experimental fork of Urho3D game engine.

GitHub Wiki contains fork-specific documentation including build instructions and differences between original project and rbfx.

Doxygen Documentation is cloned from original project and is not updated (yet?), although it still contains relevant information regarding core functionality of the engine.

Note that rbfx is undergoing active developement. Please report all spotted bugs in the issue tracker.

Licensed under the MIT license, see LICENSE for details.

• Multiple rendering API support
  • Direct3D9
  • Direct3D11
  • OpenGL 2.0 or 3.2
  • OpenGL ES 2.0 or 3.0
  • WebGL
• HLSL or GLSL shaders + caching of HLSL bytecode
• Configurable rendering pipeline with default implementations of
  • Forward
  • Light pre-pass
  • Deferred
• Component based scene model
• Skeletal (with hardware skinning), vertex morph and node animation
• Automatic instancing on SM3 capable hardware
• Point, spot and directional lights
• Shadow mapping for all light types
  • Cascaded shadow maps for directional lights
  • Normal offset adjustment in addition to depth bias
• Particle rendering
• Geomipmapped terrain
• Static and skinned decals
• Auxiliary view rendering (reflections etc.)
• Geometry, material & animation LOD
• Software rasterized occlusion culling
• Post-processing
• HDR rendering and PBR rendering
• 2D sprites and particles that integrate into the 3D scene
• Task-based multithreading
• Hierarchical performance profiler
• Scene and object load/save in binary, XML and JSON formats
• Keyframe animation of object attributes
• Background loading of resources
• Keyboard, mouse, joystick and touch input (if available)
• Cross-platform support using SDL 2.0
• Physics using Bullet
• 2D physics using Box2D
• Scripting using C#
• Networking using SLikeNet + possibility to make HTTP requests
• Pathfinding and crowd simulation using Recast/Detour
• Inverse kinematics
• Image loading using stb_image + DDS / KTX / PVR compressed texture support + WEBP image format support
• 2D and “3D” audio playback, Ogg Vorbis support using stb_vorbis + WAV format support
• TrueType font rendering using FreeType
• Unicode string support
• Inbuilt UI, localization
• WYSIWYG scene editor and UI-layout editor implemented with undo & redo capabilities and hot code reload
• Model/scene/animation/material import from formats supported by Open Asset Import Library
• Alternative model/animation import from OGRE mesh.xml and skeleton.xml files
• Supported IDEs: Visual Studio, Xcode, Eclipse, CodeBlocks, CodeLite, QtCreator, CLion
• Supported compiler toolchains: MSVC, GCC, Clang, MinGW, and their cross-compiling derivatives
• Supports both 32-bit and 64-bit build
• Build as single external library (can be linked against statically or dynamically)
• Dear ImGui integration used in tools

rbfx uses the following third-party libraries:

• Box2D 2.3.2 WIP (http://box2d.org)
• Bullet 2.86.1 (http://www.bulletphysics.org)
• Civetweb 1.7 (https://github.com/civetweb/civetweb)
• FreeType 2.8 (https://www.freetype.org)
• GLEW 1.13.0 (http://glew.sourceforge.net)
• SLikeNet (https://github.com/SLikeSoft/SLikeNet)
• libcpuid 0.4.0+ (https://github.com/anrieff/libcpuid)
• LZ4 1.7.5 (https://github.com/lz4/lz4)
• MojoShader (https://icculus.org/mojoshader)
• Open Asset Import Library 4.1.0 (http://assimp.sourceforge.net)
• pugixml 1.10 (http://pugixml.org)
• rapidjson 1.1.0 (https://github.com/miloyip/rapidjson)
• Recast/Detour (https://github.com/recastnavigation/recastnavigation)
• SDL 2.0.10+ (https://www.libsdl.org)
• StanHull (https://codesuppository.blogspot.com/2006/03/john-ratcliffs-code-suppository-blog.html)
• stb_image 2.18 (https://nothings.org)
• stb_image_write 1.08 (https://nothings.org)
• stb_rect_pack 0.11 (https://nothings.org)
• stb_textedit 1.9 (https://nothings.org)
• stb_truetype 1.15 (https://nothings.org)
• stb_vorbis 1.13b (https://nothings.org)
• WebP (https://chromium.googlesource.com/webm/libwebp)
• ETCPACK (https://github.com/Ericsson/ETCPACK)
• Dear ImGui 1.75+ (https://github.com/ocornut/imgui/tree/docking)
• tracy (https://bitbucket.org/wolfpld/tracy/)
• nativefiledialog (https://github.com/mlabbe/nativefiledialog)
• IconFontCppHeaders (https://github.com/juliettef/IconFontCppHeaders)
• ImGuizmo 1.61 (https://github.com/CedricGuillemet/ImGuizmo)
• crunch (https://github.com/Unity-Technologies/crunch/)
• CLI11 v1.5.1 (https://github.com/CLIUtils/CLI11/)
• fmt 6.0.0 (http://fmtlib.net/)
• spdlog 1.4.2 (https://github.com/gabime/spdlog/)
• EASTL 3.16.01 (https://github.com/electronicarts/EASTL/)
• SWIG 4.0 (http://swig.org/)

• Embree 3.11 (https://github.com/embree/embree)

rbfx optionally uses the following external third-party libraries:

• Mono (http://www.mono-project.com/download/stable/)