How do I animate Metal shaders in SwiftUI?

The standard pattern is to wrap your view in a TimelineView, which provides a continuous date or time value that can be passed into the ShaderLibrary as a parameter.

Why should I use 'half' instead of 'float' in Metal?

On Apple GPUs, 16-bit half-precision math is often twice as fast as 32-bit float math and reduces register pressure. It is highly recommended for color calculations and most visual effects.

What is the difference between colorEffect and layerEffect?

A colorEffect only changes the color of the current pixel. A layerEffect allows you to sample from other pixels in the view, which is necessary for effects like blurs, glows, or shadows.

What are SwiftUI stitchable shaders?

These are MSL functions marked with the [[ stitchable ]] qualifier that can be directly applied to SwiftUI views using modifiers like .colorEffect(), .distortionEffect(), or .layerEffect() starting in iOS 17.

Metal Shaders for Apple Platforms

Name: Metal Shaders for Apple Platforms
Author: lev-os

bylev-os

0•

Mobile Development

Builds, debugs, and optimizes production-ready Metal Shading Language (MSL) code for SwiftUI visual effects and high-performance GPU compute.

This skill provides specialized expertise in the Metal Shading Language (MSL) for Apple platforms, enabling developers to create advanced graphics and compute workloads. It excels at generating SwiftUI-integrated shader effects using the latest stitchable qualifiers, as well as complex compute kernels for physics and particle simulations. With a strong focus on Apple-specific GPU architecture, the skill provides actionable guidance on performance optimization, such as precision management with half-types, branch-free logic, and efficient memory coalescing, making it indispensable for developers building visually rich or data-intensive iOS and macOS applications.

主な機能

01Procedural rendering with Ray Marching and Signed Distance Functions (SDF)

02GPU performance profiling and optimization for Apple Silicon

030 GitHub stars

04Advanced post-processing (Bloom, Gaussian Blur, Chromatic Aberration)

05High-performance compute kernels for parallel GPU processing

06SwiftUI shader integration (colorEffect, distortionEffect, layerEffect)

ユースケース

01Creating custom animated backgrounds and interactive UI distortions in SwiftUI

02Developing high-efficiency image processing filters and procedural noise functions

03Implementing real-time physics and particle simulations using compute shaders

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add lev-os/agents metal-shaders

For use in Claude.ai and ChatGPT

Download Skill