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Per Gregory Ch. 8, HOT RELOAD of shaders / scripts in an engine works by which mechanism?
AAll changes saved to disk only at quit time
BFile-watcher detects edit; engine reloads asset live
CEditor restarts the engine process for each change
DSource is parsed but never re-applied at runtime
Answer & Solution
Correct answer: B. File-watcher detects edit; engine reloads asset live
Unity / Unreal / Godot editors + Gregory: filesystem watch fires; importer re-runs; new bytecode / shader binds at next frame. Skips full restart.
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