This is the first in our series of articles about WebGL. In this piece, we will discuss how WebGL works, what you need to create WebGL applications, and what a simple example looks like. You can view the WebGL specification at the Khronos site.
Also, having a good graphics card will likely improve WebGL performance on your computer. Another great demo to check out is Hello Racer. WebGL allows developers to put real-time interactive 3D graphics in the browser. WebGL can be applied to interactive music videos, games, data visualization, art, 3D design environments, 3D modeling of space, 3D modeling of objects, plotting mathematical functions, or creating physical simulations.
This is what allows it to rapidly do complex 3D rendering involving lots of calculations. There are several WebGL libraries available to take some of the complexity out of your hands. However, gaining an understanding of it can be useful in case you want to spice up your code with features that are not in your library of choice, or you feel that having a better grasp of the technology will help you find your way around what the libraries have to offer.
This information is then fed to the GPU, which processes it, and returns a view of the scene. Next we will look in more detail at how this last bit happens. The process starts with the creation of the vertex arrays.
When a rendering job is submitted, we also have to supply an additional array of indices that point to the vertex array elements. They control how the vertices get assembled into triangles later on. The GPU begins by reading each selected vertex out of the vertex buffer and running it through the vertex shader.
The vertex shader is a program that takes a set of vertex attributes as inputs and outputs a new set of attributes. At a minimum, the vertex shader calculates the projected position of the vertex in screen space. But it can also generate other attributes such as colour or texture coordinates for each vertex.
You can code your own vertex shader or use one provided by a WebGL library. The GPU then connects the projected vertices to form triangles. It does this by taking the vertices in the order specified by the indices array and grouping them into sets of three.Note: the features covered in this article are now available in a much more stable form in our latest Opera Next release.
A long time ago, in an office far far away… Opera released a custom build showing an implementation of a 3D canvas context. Now, more than 3 years later, we are releasing the first public build with a standards-based 3D Canvas implementation using WebGL for Windows. WebGL is a standard developed by the Khronos Groupwhere Opera is an active member participating in the standardization process.
We have been working on a WebGL implementation since earlywhen the standardization process started. The specification has been changing quite frequently over the past few years, but now it is starting to mature and stabilise, which makes this the perfect time to release a public preview of our current WebGL implementation. The WebGL public wiki contains more information about the standard, including tutorials and lots of demos — so it is a good place to go if you want to see our WebGL implementation in action.
In June — around the same time as our first 3D canvas experiments — we showed a video preview of our fully hardware-accelerated renderer. One of the requirements we had for enabling that code was that the software fallback — used when hardware acceleration is not available — should be at least as fast as what we were using in our desktop product at the time. Following the release of The results of this work have been rolled into this preview as well, meaning that this build also has full hardware acceleration enabled on systems with compatible hardware and drivers.
Our hardware acceleration is a bit different from what other browsers have implemented. Most of them do full hardware acceleration of all draw operations, but only on Windows Vista and Windows 7 — dropping to a more limited set of accelerated draw operations on other platforms. Our implementation will feature full acceleration on any OS with sufficient hardware support.
WebGL Fingerprint Defender
This build only has an OpenGL backend. That means your system must have an OpenGL 2. In future builds we will also add a Direct3D backend, which will reduce the requirements on drivers and should work out of the box on most modern systems.
So how can you tell if hardware acceleration is enabled? There are two easy ways to check.
WebGL and Hardware Acceleration
The first option is to load some WebGL content — if it works that means your hardware and drivers are compatible, and hardware acceleration is enabled in the browser. This preview is currently only available for Windows — but builds for other operating systems are being worked on as well.
Disclaimer: this is not a stable build — it is an early preview of upcoming technologies in Opera. Neither WebGL nor hardware acceleration will be included in the upcoming release of Opera Some other aspects, such as SVG rendering, may not work correctly.
We will continue working on these new features — fixing on all remaining bugs and optimizing our code — and we will release further preview builds to keep you up to date with our progress. Please give us your feedback — but remember to information about which graphics card and driver version you have, and if Vega is using the OpenGL or Software backend. Tim Johansson. Edit this article on GitHub. Licensed under a Opera Software AS license.
This is a bug in Opera. Not quite sure it's an Opera bug Latest version running under High Sierra:. I am using Opera I have MacOS That is more than I can say about Safari and Pale Moon. With those browsers, WebGL 2 is not working. WebGL doesn't work only in Opera This topic has been deleted. Only users with topic management privileges can see it.
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Getting a WebGL Implementation
Opera for basic phones Visit m. Opera 36 Download now. Opera portable browser for Windows. Opera USB Download now. Archived versions of Opera. Opera browser for computers Find in FTP archive.I have done away with them and I am now paying more with DISH but would rather pay more than to deal with DirecTV and all of their lies. Helpful 2 people found this review helpful Theresa of Toledo, OH Verified Reviewer Original review: Dec. Helpful 2 people found this review helpful Debbie of Frankfort, KY Verified Reviewer Original review: Dec.
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I had to explain it, again, to the tech after repeatedly confirming with the customer service rep that all the correct information was included in the ticket. Helpful Be the first one to find this review helpful Cliff and Katina of Mandan, ND Verified Reviewer Original review: Dec. So far, every month we are having to call in and dispute the monthly bill charges. I checked our online statement to see what this charge was about and we still do not know what this charge was for.
I cancelled the auto pay because we should not have to worry about what they are charging us. This 2-year contract is B. I am regretting switching to DirecTV.Website clicks: The number of taps on the website link in your profile bio. Posts: The number of Instagram posts you have published. Mentions: The number of Instagram posts mentioning your Instagram handle.
Branded hashtags: The number of Instagram posts with your branded hashtags. Gender: The gender distribution of your followers (men or women).
Top locations: The top five cities and countries where your followers are. Impressions: The total number of times a post has been seen. Likes: The number of unique accounts that liked a post. Saved: The number of unique accounts that saved a post. Engagement: The number of unique accounts that liked, saved, or commented on a post.
Impressions: The number of times a particular photo or video has been seen in your story. Reach: The number of unique accounts that saw a particular photo or video in your story. Replies: The number of replies to a particular photo or video in your story.
People insights: The list of accounts that have seen a particular photo or video in your story. Tip: You can check out their accounts by simply clicking on their handle in the list. Viewers: The number of accounts that saw any part of your Instagram live video.
Note: There is no analytics available for Instagram live videos at the moment. Beyond the above-mentioned metrics that you can obtain from Instagram analytics tools, you can go one level deeper by using some of those numbers to calculate more useful performance metrics. Some of the Instagram analytics tools listed below can automatically calculate these metrics for you.
Growth metrics allow you to know the change (increase or decrease) of a metric. An example is follower growth how your follower count is growing over time. For example, engagement rate is the percentage of your followers that has engaged with your Instagram post. Tip: Completion rate is often used for calculating the percentage of people who viewed all the photos and videos in your Instagram Stories.
It is determined by dividing the number of views for the last post in a story with the number of views of the first post in the story.
Average metrics give you a benchmark for the general performance of your Instagram posts. For example, the metric, average likes per post, tells you generally the number of likes each of your posts received. Sum of metric for a period (e. But you can also use time period (i. For instance, you could calculate the average number of viewers for your Instagram live videos on different days of the week to determine which day might be best to live stream on Instagram.
Examples: Average comment, average engagement, average reach for Instagram Stories, and average viewers for Instagram live videos. By ranking your posts by the number of impressions, reach, engagement, or views they received, you can find out your top performing posts and attempt to repeat the success.
Examples: Top post, top video, top 10 posts in terms of comments, and top 10 posts in terms of engagement. Instagram provides pretty much all of the metrics and insights listed above in Instagram Insights.In midfield there are a lot of recognizable names. Joe Allen continues to be a positive contributor for Stoke, having a continued resurgence after his debacle in Liverpool.
Daren Fletcher, who at the ripe age of thirty-three, has started every game thus far for Stoke, which is just impressive. Kurt Zouma has been a fantastic addition on-loan from Chelsea and partners with captain and Stoke City hero Ryan Shawcross. Erik Pieters, Kevin Wimmer, and Geoff Cameron all also get time across the backline too. Finally, Stoke are very strong in net with Jack Butland. With all of this said though, the Stoke defense has been far from impenetrable this season.
Spurs need three points for confidence heading into the Christmas fixture list and just to simply put points on the board. Stoke can be dangerous, but they are a team Tottenham have consistently handled in the past. Toby Aldwerweireld and Davinson Sanchez will be out, so it will be a greater than usual challenge, but hopefully Spurs are up to the task and get back on track.
TV: NBCSN (NBC Sports Live Extra), BBC Radio (UK), TSN4, TSNGO (Canada), Optus Sport (Australia), other listings at livesoccertv. Poch quelled fears this morning stating that he avoided anything too serious. Victor Wanyama has resumed light outdoor training, which is a big positive. With Dier being forced to the backline, we could really use him right now. Lastly, Davinson Sanchez will miss out due to his red card against Watford.
Maybe Ben Davies slots to the left center-back spot and Danny Rose could feature out left, but that is unlikely. My predicted lineup will be in a 4-2-3-1 formation and will be as follows: Kieran Trippier will play at right-back, Eric Dier and Jan Vertonghen will feature in the middle, with Ben Davies at left-back. Harry Kane will start as the lone forward. Jake Meador and Joel Wertheimer nailed the 1-1 scoreline. With the perfect prediction Wertheimer, a newcomer to the competition, catapults himself into a two way first placed tie with the old Uncle himself.
Dustin Menno: I have nothing to say about Stoke, really. Matthew Pachniuk: Spurs have to bounce back, right. Jake Meador: Dr Stoke City will see you now. Spurs 3, Stoke 1. Pardeep Cattry: Kevin Wimmer v. Son Heung-Min for the first time since their separation means someone will be saying sorry for his team's success at the end.
It'll probably be Son.