Real-time Fluid Rendering

This technical research investigates real-time fluid rendering techniques through the implementation of screen-space shaders in TouchDesigner. It demonstrates the practical application of modern real-time graphics techniques in an interactive context.

Background

This research was inspired by Vincent Houzé's fluid structure, which demonstrate the artistic potential of real-time fluid dynamics. The project aimed to deconstruct and advance these techniques for new media installations

The challenge of real-time fluid visualization lies at the intersection of two complex domains:

Technical Architecture

Fluid Simulation Core

The foundation of the system relies on particle-based fluid simulation using Lagrangian schemes:

The simulation core handles thousands of particles in real-time, calculating physics-based interactions and collisions while maintaining performance.

Gesture Control Interface

We implemented hand tracking through LeapMotion, allowing intuitive manipulation of the fluid environment. This creates a direct connection between human gesture and fluid dynamics.

Advanced Rendering Pipeline

The rendering system employs modern screen-space techniques, inspired by Nvidia's GDC 2010 presentation on game industry standards:

The rendering pipeline processes multiple passes through custom GLSL shaders, combining different visual aspects to achieve the final fluid appearance.

Artistic Exploration

The technical framework served as a foundation for exploring various artistic directions with modified shaders. I experimented with different visual styles by manipulating:

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Acknowledgements

This research was conducted during an internship at OUTPUT, with special thanks for their support in providing resources and creative freedom. The project builds upon Vincent Houzé's pioneering work in interactive fluid installations.