Irion was the codename for a game-engine I worked on, in Lyon. It was big and ambitious, probably too much for its own good. Here is an excerpt of what I did in this project :

• Arrays, data compression, standard classes
• The MAX exporter, Character Studio, skinning, motion blending, motion graph
• Serialization methods
• Fast Fourier transform
• TCB interpolators
• Perlin noise, Cellular noise
• A volume integrator to compute inertia tensors
• A big part of the DirectX7 renderer
• Porting the renderer to the Dreamcast
• A lot of computational geometry
• Intersection tests, advanced collision detection, sweep & prune
• A triangle striper
• A silhouette tracker
• Occlusion culling
• Shadow volumes, stencil shadows
• Stencil mirrors, clip planes mirrors
• Basic IK
• Subdivision surfaces
• Progressive meshes
• Particles
• Rigid Body Simulation, ODE solvers
• A game prototype finally, using Irion
• Etc !

The complete list is huge, this was a year without much sleep……….

Screenshots

 An unreleased hardware-rendered version of Eden, using Irion DX6 (old !).

• Snap#1
• Snap#2
• Snap#3
• Snap#4
• Snap#5
• Snap#6

Some cute stencil CSG :

• CSG #1
• CSG #2

Water effect

• Water

Cellular noise

• Cellular

Terrain stuff :

• The terrain snapshot : everything is generated (mesh + texture) with a mixture of Perlin and Cellular noise. The water is a 3D version of the old 2D water effect, and looks better animated ! All of that was realtime rendered with Irion.
• Terrain snapshot 2
• Old terrain snapshot #1
• Old terrain snapshot #2
• Old terrain snapshot #3

• Old terrain snapshot #4

Back to main