High-quality image scaling

Summary

This feature is about switching to high-quality image scaling while balancing the impact on page rendering speed.

Reference

Developer documentation and reference material as related to this feature may be viewed here

Implementation and Tracking Bug

bug 669851 - Don't use nearest-neighbour filtering when neon isn't available
bug 598736 - Use higher-quality image interpolation on mobile

Use Cases to Test

• Zoomed text and images on pages should look smooth

Test Cases

Text images

Steps to perform
• Open a new tab and go to https://www.xkcd.com/
• Zoom in the page and look at the pictures

Expected results
• Images should not be jagged and pixelated when zoomed in or out

Fig.1: Before

Fig.1: After

• Please open the screenshots to see the difference better.

Bugs