Scenegraph. Vienna University of Technology 2

Transcription

1 Scenegraphs and Engines

2 Scenegraphs Application Scenegraph Windows/Linux OpenGL Hardware Vienna University of Technology 2

3 Scenegraphs Choosing the right libraries is a difficult process Very different target applications Different capabilities Underlying Graphics APIs Needs to fit the content pipeline Important for application development Not important for research (though convenient) Vienna University of Technology 3

4 Content Pipeline Choosing the right libraries is a difficult process Very different target applications Different capabilities Underlying Graphics APIs/Operating Systems Needs to fit the content pipeline Important for application development Not important for research (though convenient) Vienna University of Technology 4

5 Typical Content Pipeline We need: Content creation tools Exporters Scenegraph/ Engine Vienna University of Technology 5 MechAssault 2 content pipeline

6 DCC tools Only real open source option: Blender Everything you need for Game/Movie production Modelling/Rigging Animation Rendering/Compositing Contains complete game engine+editor Fully integrated with UI Immense feature list causes steep learning curve! Vienna University of Technology 6

7 Blender Vienna University of Technology 7

8 Blender Vienna University of Technology 8

9 Wings3D Easy to use subdivion surface modeller Vienna University of Technology 9

10 Textures Gimp: Full featured image editing Vienna University of Technology 10

11 Scenegraphs/Engines Scenegraphs deal with Rendering Engines deal with Rendering Physics AI Audio Game logic Vienna University of Technology 11

12 OpenScenegraph Inofficial Scenegraph of OpenGL Implements OpenGL 2.0 Very clean design Very high performance High portability Manipulators Targeted to VR Application Visualisation Vienna University of Technology 12

13 Delta3D Game and Simulation-Engine, integrates OpenScenegraph OpenDynamics Engine Character Animation Library OpenAL (Audio) Game Networking Engine Tracker Editor Vienna University of Technology 13

14 OGRE Commercial Grade Graphics Engine Highly active community Strong modular design Bindings/Implementations in C++,Java, C#, Python, Ruby State of the art rendering Abstracts DirectX and OpenGL Combines with a lot of other librariesi Build your own game engine! Vienna University of Technology 14

15 OGRE Countless tools/addons Very extensible Higher order render management state management, spatial culling, dealing with transparency Proven, stable engine used in several commercial products Everything you need to make a computer game! Vienna University of Technology 15

16 OGRE I will use OGRE example implementations throughout the course Pretty much everything in this course is implemented in OGRE and OGRE addons Very good way to play around with the course contents..without having to implement the basic algorithms Vienna University of Technology 16

17 Scenegraphs Open Source delivers many choices: OGRE OpenScenegraph jme (Java) OpenSG The Nebula Device 2 C4 Engine Irrlicht Crystal Space Panda3D Blender Game Engine Reality Factory RealmForge Many, many others 3D Engine Database/Search Engine: Vienna University of Technology 17

18 Tipps Learn one of the major DCC Programs Blender, Maya, 3DSMax, Softimage XSI, Cinema4D, Lightwave Takes time and is sometimes painful Learn one of the major scenegraphs/engines Fast implementation of small projects Reference Design/Implementation Choose software on Previous knowledge/ Programming Language Required features Application content Vienna University of Technology 18