Compose Multiplatform's Skia Rendering on iOS

--- title: "Compose Multiplatform iOS: Fixing Skia Rendering for 120fps" published: true description: "Profile and fix Compose Multiplatform frame drops on iOS. Metal shader warmup, texture atlas tuning, and when to drop to native UIKit views." tags: kotlin, ios, mobile, performance canonical_url: https://blog.mvpfactory.co/compose-multiplatform-ios-fixing-skia-rendering-for-120fps --- ## What You Will Learn By the end of this walkthrough, you will know how to diagnose and fix the three most common sources of frame drops in Compose Multiplatform on iOS: Metal shader compilation stalls, texture atlas thrashing, and missed ProMotion deadlines. You will also know exactly when dropping to native `UIKitView` is the right architectural call. ## Prerequisites - A working Compose Multiplatform project targeting iOS - Xcode with Instruments installed - A physical iOS device with ProMotion (iPhone 13 Pro or later) - Familiarity with Kotlin and basic Compose concepts ## Step 1: Understand How Ski