Metal Playground

Playground where I mess around with Metal on iOS and macOS.

(Screenshot taken Tue 20th January 2026)

Features

• Cook-Torrance BRDF, PBR workflow
• Deferred shading
• Clustered light culling
• GPU driven rendering and culling
• Raytraced sun shadows
• Cascaded shadow mapping
• HDR rendering and environment mapping
• Works on iOS and macOS

WIP

• Reflections (screen space hi-z traced + raytraced)

Requirements

• iOS 16.0+
• macOS 15.0+
• KTX Texture Tools (for ASTC compression)

Building and running

Before you build, you need to compress every asset with scripts/compress_assets.sh

iOS: scripts/build_ios_simulator.sh macOS: scripts/build.sh