BestHub
search
Sign in
Tag

Core Animation

1 views collected around this technical thread.

Sohu Tech Products
Sohu Tech Products
Dec 24, 2020 · Mobile Development

Reducing Frame Rate in iOS Animations to Lower GPU Usage

The article explains why lowering the frame rate of iOS animations can trade a slight loss in visual smoothness for significant GPU load reduction, describes the Core Animation rendering pipeline, compares different frame‑rate reduction techniques, and presents test results showing the impact on CPU, GPU, and overall app performance.

CADisplayLinkCore AnimationGPU optimization
0 likes · 11 min read
Reducing Frame Rate in iOS Animations to Lower GPU Usage
Tencent Music Tech Team
Tencent Music Tech Team
Mar 31, 2017 · Mobile Development

iOS View and Animation Rendering Architecture and Performance Optimization

iOS renders views and animations through a multi‑stage pipeline—layout, backing image creation, preparation, commit, then GPU OpenGL compositing—so excessive layers, overdraw, off‑screen rendering, or image decompression can cause frame drops, while marking views opaque, reducing transparency, and using Instruments’ Core Animation and GPU Driver tools help diagnose and optimize performance.

Core AnimationPerformance OptimizationiOS
0 likes · 10 min read
iOS View and Animation Rendering Architecture and Performance Optimization
Tencent Music Tech Team
Tencent Music Tech Team
Dec 30, 2016 · Mobile Development

Understanding CAMediaTiming Protocol and Hierarchical Time Structure in iOS Animations

The CAMediaTiming protocol defines a hierarchical time system for CALayer and CAAnimation objects, where each layer owns a nested time space whose beginTime, speed, and timeOffset combine to compute active and basic local times, enabling developers to pause, offset, speed up, repeat, or auto‑reverse animations with precise control.

CAMediaTimingCore AnimationObjective-C
0 likes · 9 min read
Understanding CAMediaTiming Protocol and Hierarchical Time Structure in iOS Animations
WeChat Client Technology Team
WeChat Client Technology Team
Nov 19, 2015 · Mobile Development

Unlocking iOS Event Handling & Rendering: RunLoop, UI Threads, and Core Animation

This article explains iOS’s event processing pipeline—from hardware events through the RunLoop’s observer, source, timer, and dispatch mechanisms—detailing why UI must run on the main thread, how CALayer and Core Animation render, and the roles of CADisplayLink, NSTimer, and async display techniques.

AsyncDisplayCADisplayLinkCore Animation
0 likes · 20 min read
Unlocking iOS Event Handling & Rendering: RunLoop, UI Threads, and Core Animation