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Raw WebGL 101 — Part 2: a simple shader
By Erik Möller · Wednesday, June 27, 2012 9
This article picks up where the previous article in the series left off, looking at creating a simple shader to apply a gradient to a sample shape and offset it. Read more…
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An Introduction to WebVTT and <track>
By Ian Devlin · Wednesday, June 20, 2012 14
The HTML5 specification includes two features for improving media accessibility — the WebVTT format, for marking up external text tracks such as subtitles and captions, and the <track> element, for applying those text tracks alongside HTML5
<video>and<audio>. This article provides a detailed introduction to both features, showing how you can make use of them in your projects today. Read more… -
HTTP: Let's GET it on!
By karlcow · Wednesday, June 20, 2012 20
The 2nd part of a series of HTTP tutorials written by Karl Dubost, this article explores how HTTP is used to communicate between clients and servers. Read more…
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Understanding the CSS Transforms Matrix
By Tiffany Brown · Wednesday, May 23, 2012 19
In this article we explain how transform matrices work — these involve some rather complicated math, but they are not so hard to understand when you sit down and check out a few examples! Once you understand how to put together matrices, you can use them inside the CSS transform: matrix(); and transform: matrix3d(); functions to apply transform effects to your web pages. Read more…
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Making a move with CSS3 animations
By Chris Mills · Wednesday, April 25, 2012 22
CSS animations allow us to animate our web content, by declaring property values at different keyframes, and then applying the animations you've declared to the elements you want to animate. And what's more is that they're available in Opera 12+! In this article, we'll walk you through the basics and look at some examples along the way. Read more…
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Opera's year in Dev Rel 2012
By Chris Mills · Wednesday, December 19, 2012 103
Opera's dev rel team have done a lot this year. To tie things up for 2012, we would like to present our highlights and best publications of 2012; some golden moments for you to read when the vacation gets boring! Read more…
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Web standards curriculum translations
By Chris Mills · Tuesday, October 9, 2012 30
This article groups together all of the translations available so far for the Opera web standards curriculum. It's nice to see such a lot of work available already, but we'd like to see more - get in touch if you have created some translations, or would like to get involved in some translation efforts! Read more…
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The W3C device orientation API: detecting orientation and acceleration
By Shwetank Dixit · Wednesday, July 11, 2012 35
Using the W3C's device orientation API, we can determine the orientation of the device as well as gather information about its movement. This information is valuable in certain types of applications, such as games that require the user to tilt the device in some way. In this article we'll look at the basics of how device orientation works, along with some simple examples. Read more…