Game Debugging and Profiling Questions

Covers debugging techniques and performance analysis specific to game development. Candidates should demonstrate familiarity with debuggers available in game engines including breakpoints, stepping, watches, and call stack inspection. Understand common game development defects such as timing and synchronization issues, null references, physics glitches, animation and state desynchronization, and platform specific runtime failures. Explain profiling workflows and tools to identify performance bottlenecks in rendering, simulation, and resource loading, including sampling and instrumentation profilers, frame time analysis, and memory and resource usage tracking. Discuss core performance concepts such as frame rate, delta time, frame budget, central processing unit and graphics processing unit hotspots, cache friendliness, and data locality. Show judgment about when to optimize and when optimization is premature, methods to build reproducible repro cases, how to measure before and after changes, and common optimization strategies for CPU, GPU, and memory.