WGSL Compute Shaders

Write a WGSL @compute entry point with a correct workgroup size, invocation ids, shared workgroup memory, atomics, and barriers, without shader-creation errors or workgroup-memory data races.

Quick Reference

WGSL is the shading language of WebGPU 1.0-stable (Chrome 113+, Safari 26+, Firefox 141+). A compute shader is one function marked @compute and @workgroup_size(x, y, z). The host dispatches a grid of workgroups; each workgroup runs x*y*z invocations that can share var<workgroup> memory.

Compute builtin values

All compute builtins are inputs declared with @builtin(name) on entry-point parameters. All are vec3<u32> except local_invocation_index.