SR&ED Case Study: Physics Engine Optimization for Real-Time Rendering

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Background

A game studio’s title required simulating destructible environments with hundreds of interacting physical objects, but the engine’s standard physics system caused unacceptable frame rate drops once object counts exceeded a fraction of the design target.

The Challenge

The studio needed to determine whether the simulation could be optimized to hit target frame rates without visibly compromising physical accuracy, or whether the object interaction model itself would need to be redesigned.

Technological Uncertainty

It was not known in advance whether standard optimization techniques — spatial partitioning, collision simplification — could close the performance gap at the required object density, or whether a fundamentally different simulation approach would be needed.

Experimental Development

The team systematically tested combinations of spatial partitioning strategies, collision approximation methods, and simulation update scheduling, measuring frame rate, physical accuracy, and visual artifact rates for each configuration under target scene complexity.

What Failed?

An initial spatial partitioning optimization improved frame rate but introduced visible object interpenetration under high-density collision events, requiring the team to redesign the collision resolution step itself.

Technological Advancement

The team developed a hybrid simulation approach combining adaptive spatial partitioning with a custom collision resolution method, achieving target frame rates at the required object density while maintaining acceptable physical accuracy, generating new technical knowledge specific to high-density destructible environment simulation.

Potentially Relevant SR&ED Activities

●   Systematic testing of spatial partitioning and collision approximation strategies

●   Frame rate and physical accuracy benchmarking across configurations

●   Development of a custom collision resolution method for high-density interactions

What Would Generally Not Qualify

Applying the finalized, optimized physics system to additional levels using the same object density and interaction types would be routine implementation and would not itself qualify.

Documentation

Frame rate and accuracy benchmarks across configurations, technical design notes on the collision resolution redesign, and profiling data isolating the performance bottleneck would support this claim.

About The Author

Dale Doering

Dale Doering is the owner of SRED Consultants Inc., helping businesses navigate the complexities of Scientific Research and Experimental Development (SR&ED) claims. With a strong understanding of the technical and interpretive requirements of the SR&ED program, Dale works with companies to identify eligible projects, document technological challenges, and clearly demonstrate the systematic experimentation or analysis undertaken to achieve advancement. His approach focuses on translating complex technical work into well-supported SR&ED claims, helping clients maximize eligible opportunities while maintaining a clear understanding of the program’s requirements.

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Frequently Asked Questions

What core challenge was the game studio trying to solve?

The studio needed to optimize its physics engine to handle destructible environments with hundreds of physical objects without causing severe frame rate drops or sacrificing physical accuracy.

It was unknown prior to testing whether standard optimization methods (like spatial partitioning and collision simplification) could achieve the necessary performance at high object densities, or if an entirely new simulation model would have to be created.

What failed during the experimental development phase?

The team created a hybrid simulation model that combined adaptive spatial partitioning with a custom collision resolution method. This hit target frame rates at high object densities while maintaining accuracy, creating new technical knowledge for simulating high-density destructible environments.

Applying the completed, optimized physics system to additional game levels using the same object density and interaction types would be considered routine implementation rather than experimental development, making it ineligible.

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