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High Roughness, Sharp Highlights: Auditing a glTF Material in Three.js

An imported car-body model still showed sharp highlights on its hood and rear fender after switching to a preset labeled Matte . The overall reflection became weaker, but some bright patches remained.

  • BMW M4 G82 ADRO-kit car body imported into Three.js environment
  • Matte preset showed sharp highlights on hood and rear fender
  • Clearcoat extension explained remaining highlights in rendered image

How Browser-Based Reaction Time Tests Work

A reaction time test looks simple: wait for a color change, then click. Behind the result are a timer, browser rendering, input events, and measurement limits.

  • Browser-based reaction tests monitor color shift and button press.
  • JavaScript code initiates trials with random delay and captures timestamps.
  • Randomized delay prevents prediction of signal appearance.

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