Unreal Engine Research & Evidence-Based Practice 5

Question 1

Which Unreal Engine feature lets a designer run data-driven experiments on AI behavior trees without modifying code?

Accepted Answer

Gameplay Ability System attributes driving Blackboard keys

Answer

Exposing Gameplay Ability System attributes to Blackboard keys allows designers to swap numeric parameters at runtime, enabling data-driven behavioral experiments without code changes.

Question 2

A team researching texture streaming efficiency should analyze which Unreal Engine stat category?

Accepted Answer

stat streaming

Answer

`stat streaming` displays real-time texture streaming throughput, pool usage, and pending requests, giving direct evidence of streaming efficiency.

Question 3

When citing Unreal Engine source code behavior in technical documentation, which practice best supports reproducibility?

Accepted Answer

Reference the engine version and specific file path and line range in the GitHub mirror

Answer

Pinning a citation to a specific engine version, file path, and line range ensures readers can verify the exact code you describe, even as the engine evolves.

Question 4

Which profiling approach provides evidence for optimizing tick frequency of non-critical Actors in Unreal Engine?

Accepted Answer

Use Unreal Insights to identify Actors with high cumulative tick time, then increase their TickInterval

Answer

Identifying the highest-cost ticking Actors via Unreal Insights and increasing their TickInterval based on measured cost is an evidence-driven optimization.

Question 5

A developer proposes that Virtual Shadow Maps (VSMs) reduce shadow rendering cost. What constitutes sufficient empirical evidence for this claim?

Accepted Answer

Profiling the same scene with traditional shadow maps vs. VSMs using GPU Visualizer and recording GPU shadow pass time

Answer

Recording GPU shadow pass time under both shadow systems on the same scene using GPU Visualizer provides quantitative, reproducible evidence for the performance comparison.

Unreal Engine Practice Test

Unreal Engine Practice Test

Unreal Engine Research & Evidence-Based Practice 5