Figma rendering: Powered by WebGPU

Summary

The article outlines Figma's transition from WebGL to WebGPU for rendering, emphasizing the performance enhancements and architectural changes involved in this upgrade. It details the challenges faced during the implementation, including the need to maintain compatibility with existing WebGL shaders while introducing a new shading language, WGSL. The authors describe how they modernized their graphics interface and optimized uniform handling to leverage WebGPU's capabilities effectively. Additionally, they discuss the dynamic fallback system developed to ensure stability during the rollout of WebGPU support.

Key Learnings

• 1Transitioning from WebGL to WebGPU requires careful architectural changes to optimize performance without breaking existing functionality.
• 2Explicitly managing draw-call arguments and uniform buffers can significantly reduce bugs and improve rendering efficiency.
• 3The introduction of a dynamic fallback system is crucial for maintaining application stability during the migration to WebGPU, especially in the presence of hardware compatibility issues.
• 4Utilizing open-source tools for shader conversion can streamline the process of supporting multiple shading languages while minimizing maintenance overhead.
• 5Performance testing across various devices is essential to identify regressions and optimize the rendering pipeline effectively.

Who Should Read This

Senior Graphics Engineers implementing advanced rendering techniques in web applications

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