Profiling and Debugging

A WebGL page is slow on the CPU, where JavaScript and validation prepare commands, or on the GPU, which runs them later in another process. The timings here ran on a shared machine, so compare ratios, not milliseconds.

Subsections

• Frame Timing
• Spector.js
• Debug Extensions
• about://gpu
• Bottlenecks
• Batching and Atlases
• Shader Stalls
• Headless Testing