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Standard
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OGRE
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IrrLicht
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Truevision3D
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General
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Type
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Only rendering engine
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Game engine
Include TV3DEngine,TV3DMedia,TV3DNet……
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Languages
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Written in pure C++, totally object orientated.
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Written in pure C++, totally object orientated.
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Written in C++ and VB6 with DirectX8.1
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License
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LGPL
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zlib/libpng License(totally free)
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· Free TV3DSDK
· Registered Developer License
· group or site licenses
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Develop platforms
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· C++
· .NET
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· C++
· .NET language binding
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VB/VC++/DELPHI/
C#/vb.net
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Platforms
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Windows
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ü Support
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ü Support
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ü Support
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Linux
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ü Support
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ü Support
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MacOS
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ü Support
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ü Support
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3D API
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Direct3D
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ü Support
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ü Support
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ü Support
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OpenGL
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ü Support
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ü Support
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Other
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· The Irrlicht Engine software renderer.
· The Apfelbaum Software Renderer
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Architecture
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Extensibility
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· Extensible example framework
· Flexible plugin architecture allows engine to be extended without recompilation
· Use some other professional engines to achieve other features
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Scripting
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Materials & Textures
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Materials
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· Powerful material declaration language
· Multiple material
· Material LOD
· Multi-texture and multi-pass blending
· Projective texturing
· Textures can be provided and updated in real-time by plugins
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· Provide common built in materials based on fixed function pipeline or programmable pipeline
· add new materials to Irrlicht at runtime, without the need of modifying/recompiling the engine
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Textures and Mapping
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自動產生MipMap；
自動調整紋理大小以滿足硬件需求。
支持可程序控制的紋理坐標生成和轉換。
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· Bump mapping
· Parallax mapping
· Light maps
· Sphere mapping
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DOT3 Bump mapping
沒有提供多層紋理和混合模式
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Shaders
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· Supports vertex and fragment programs, both written in assembler, and in Cg, DirectX9 HLSL, or GLSL
· Support many commonly bound constant parameters like worldview matrices, light state information, object space eye position etc
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· Pixel and Vertex Shaders 1.1 to 3.0
· ARB Fragment and Vertex Programs
· HLSL
· GLSL
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· Hardware Vertex Shaders
· HLSL
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Scene Management
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General
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· Highly customizable, flexible scene management, not tied to any single scene type.
· Hierarchical scene graph; nodes allow objects to be attached to each other and follow each others movements, articulated structures etc
· Scene querying
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· Using a hierarchical scene graph, can mix indoor and outdoor scene seamless together
· Extensible hierarchical scene management
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BSP Support
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BSP 場景的天空穹、粒子特效、高級材質屬性，乃至 BSP 的空間分割規則都會被正確識別、自動實現
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· 對 BSP 的特性支持比較貧乏
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對 BSP 的讀取存在 BUG
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Other
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Special effects
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Particle System
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· easily extensible emitters, affectors and renderers
· can be defined in text scripts for adjusting in real-time
· particle pooling
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· Customizeable Particle systems for snow, smoke, fire, ...
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Atmospheric effects like fog, cloud, sky (box and sphere), stars.
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Light & Shadow
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當前支持三種陰影：調整紋理陰影,調整模版陰影,附加模板陰影。不支持軟陰影
Multiple shadow rendering techniques,
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· Dynamic lights
· Dynamic shadows using the stencil buffer
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· Optimized dynamic stencil shadows
· DirectX Hardware Lighting
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Other
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· Support for skyboxes, skyplanes and skydomes
· Billboarding for sprite graphics
· Transparent objects automatically managed
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· Realistic water surfaces
· Billboards
· Transparent objects
· Skyboxes
· Fog
· Texture animation
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Billboard
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Character Animation
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· Skeletal animation
· blending of multiple animations
· variable bone weight skinning
· hardware-accelerated skinning
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· Morph target animation:
· Skeletal animation
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· Skeleton based, Key frame based, morph based animations
· Animations that can be enhanced by bone attaching or custom bone rotations.
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Supported Formats
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textures file formats
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· PNG, JPEG, TGA, BMP or DDS
· 1D textures, volumetric textures, cubemaps and compressed textures (DXT/S3TC)
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· PSD,JPG,PNG,TGA,BMP,PCX
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mesh file formats
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Milkshape3D, 3D Studio Max, Maya, Blender and Wings3D
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· 3DS,OBJ,CSM,DAE,DMF,OCT,X,MS3D,MY3D,LMTS,BSP,MD2
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3DS, X, MDL, MD2, MD3
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Document
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Great number of users and well documented.
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well documented API with lots of examples and tutorials.
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Other
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GUI
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2D Drawing
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XML
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ü Support
XML Converter: convert efficient runtime binary formats to/from XML for interchange or editing
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ü Support
快速的XML分析器
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Web Site
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http://www.ogre3d.org
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http://irrlicht.sourceforge.net
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http://www.truevision3d.com
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