webgpu-wgsl-builtins

What problem does it solve?

This Skill prevents WGSL shader-creation errors caused by using the wrong builtin function, the wrong builtin value, or the wrong shader stage for a WebGPU 1.0 workflow.

Core Features & Use Cases

• Builtin Function Guidance: Helps choose the correct WGSL math, geometric, integer, pack, texture, derivative, atomic, synchronization, and array builtins.
• Builtin Value Mapping: Clarifies which builtins are inputs or outputs in vertex, fragment, and compute stages, including direction and type.
• Error Prevention: Guards against common failures such as stage-restricted texture calls, invalid derivative usage, missing subgroup feature gates, and incorrect uniform control flow.
• Use Case: A shader author can use this Skill to fix a fragment shader that incorrectly calls a derivative builtin from compute, or to validate that a vertex output uses the proper builtin and interpolation rules.

Quick Start

Ask for the webgpu-wgsl-builtins skill to validate your WGSL builtin calls and builtin value declarations before you compile the shader.