WGSL Builtin Functions and Values

Call the right WGSL builtin function and declare builtin input/output values with the correct stage, direction, and type, without triggering shader-creation errors.

Quick Reference

WGSL is the shading language of WebGPU 1.0-stable (Chrome 113+, Safari 26+, Firefox 141+). Builtin functions need no import. Builtin values bind to system inputs/outputs via the @builtin(name) attribute on entry-point parameters and return members.

Builtin function categories