Professional WebGPU vs Canvas 2D performance comparison tool. Real-time screen sharing rendering performance test with resolution and post-processing stress test configurations
WebGPU doesn't wait for GPU completion, immediately freeing the main thread; Canvas 2D post-processing blocks the main thread
Click the button rapidly while test is running to observe UI response delay
// CPU Work (Fast) Build commands → Submit queue → Return immediately ✅ // GPU Work (Parallel) Async rendering in background... // Main Thread State Idle! Can handle UI, animations, user input
// CPU Work (Slow) drawImage → getImageData → Process millions of pixels → putImageData ❌ // Main Thread State Completely blocked! UI unresponsive, animations stuttering, input delayed
WebGPU Performance Test Tool is a professional graphics performance benchmark tool for comparing WebGPU and Canvas 2D performance in real rendering scenarios. By capturing live screen sharing, it renders in parallel using both technology stacks, intuitively demonstrating WebGPU's performance advantages and async rendering capabilities.
The tool provides rich stress test configurations: supports 720p, 1080p, and 4K resolution testing; configurable 1/4/9 instances for batch rendering tests; optional post-processing effects (blur, sharpen, contrast, saturation) for testing compute-intensive scenarios. Real-time monitoring of key metrics including FPS, CPU time, GPU queue depth, dropped frames, plus main thread responsiveness testing to verify WebGPU's async advantages.
WebGPU's core advantage lies in its async rendering architecture: CPU only builds render commands and submits to GPU queue, immediately releasing the main thread to handle UI interactions, animations, etc., while Canvas 2D post-processing blocks the main thread until all pixel processing completes. This tool helps developers intuitively understand this difference, providing data support for choosing the right graphics technology stack. Suitable for WebGPU learning, performance optimization, technology selection, and more.
Understand WebGPU's performance advantages and async rendering mechanism compared to traditional Canvas 2D through actual test data
Choose appropriate rendering technology for web graphics applications, evaluate performance benefits of migrating to WebGPU
Test GPU performance across different devices and browsers, establish baseline performance data
Visually demonstrate performance differences between async and sync rendering, and main thread blocking impact in teaching