Use GPU to pevent flickr and trails (repaints) CSS3 transitions

Harnessing the GPU to Eliminate Flicker and Trails in CSS3 Transitions

This article explores leveraging the GPU to improve the performance of CSS3 transitions, specifically addressing the issue of flicker and trails (repaints) often observed in Chrome. We'll examine key CSS3 properties and their impact on animation smoothness.

Key Findings:

• GPU Acceleration: Offloading rendering tasks from the CPU to the GPU significantly boosts browser performance, resulting in smoother CSS3 transitions and reduced resource consumption, especially beneficial for mobile devices.
• CSS3 Properties: scale3d and cubic-bezier curves refine animation fidelity, creating a more fluid user experience.
• Trade-offs: While offering performance advantages, GPU acceleration can increase power consumption and heat generation, particularly on mobile devices with limited battery life and cooling.

Hardware Acceleration Explained:

Hardware acceleration redirects CPU-intensive tasks to the GPU, leading to substantial performance gains and decreased resource usage on mobile devices.

Addressing Repaints and Relayout:

Efficiently managed CSS transitions, often hardware-accelerated, minimize page relayouts during animations, enhancing animation fidelity.

Monitoring FPS:

Enable the FPS counter in Chrome (chrome://flags) to verify GPU acceleration. A high FPS indicates successful GPU utilization.

scale vs. scale3d:

scale3d generally offers superior performance for 3D transformations.

Example: scale vs. scale3d

Cubic-Bezier Curves and Timing Functions:

Cubic-bezier functions provide fine-grained control over animation speed curves.

transition: all 300ms cubic-bezier(0.420, 0.000, 0.580, 1.000); /* ease-in-out */

[More on Timing Functions](Mozilla Timing Function Documentation)

Illustrative Examples:

CSS3 Transition Control Properties:

Let's explore some CSS3 properties and their limitations:

• -webkit-backface-visibility: hidden; (Chrome default is visible) [CSS Tricks Backface Visibility](CSS Tricks Backface Visibility Link)
• -webkit-perspective: 1000; (Limited browser support) [W3 CSS3 Perspective](W3 CSS3 Perspective Link)
• -webkit-font-smoothing: subpixel-antialiased; (Safari-specific) [maxvoltar font smoothing](maxvoltar font smoothing Link)
• -webkit-transform-style: preserve-3d; [Transform Style Demo](Transform Style Demo Link)
• useTranslate3d: true; (For smoother animations on iOS devices) [CSS Animatable Properties](CSS Animatable Properties Link)

Resources:

• [HTML5 Rocks on Speed](HTML5 Rocks on Speed Link)
• [jQuery Animate Enhanced](jQuery Animate Enhanced Link)
• [Paul Irish on requestAnimationFrame](Paul Irish on requestAnimationFrame Link)
• [Advanced animation demos](Advanced animation demos Link)
• [Pretty cool article on css transforms](Pretty cool article on css transforms Link)
• [GPU CSS](GPU CSS Link)
• [cubic-bezier easing tool](cubic-bezier easing tool Link)

(Note: Replace bracketed placeholders like "[Mozilla Timing Function Documentation]" with actual links to relevant resources.)

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