Unity 5.3 WebGL Updates
The upcoming Unity 5.3 release is the fourth version of Unity to support WebGL publishing. We have made a lot of progress since we first shipped WebGL support as a Preview in Unity 5.0, so we would like to share some updates.
Changes in Unity 5.3
Unity 5.3 brings a series of improvements which are relevant to WebGL developers:
- The Unity Standard Shader now uses Desktop-quality reflection functions for WebGL. Previously, Unity WebGL would use a simplified version of the Standard Shader built for mobile devices using the OpenGL ES 2.0 graphics library. Now WebGL uses the same reflection functions as we use on the desktop, resulting in much better quality materials.
- Soft shadow support.
- Data files will now be LZ4 compressed in memory. In WebGL, you don’t have access to a real file system. For this reason, we will keep all your assets in memory all the time. In Unity 5.3, asset data in memory is compressed using LZ4, and will only be decompressed when assets are loaded. This means that your asset data will use less space in memory, and you will be less likely to run out of memory.
- WebGL build files can now be more easily relocated to different urls. All files generated by the build process are now referenced directly in the generated index.html file. So if you want to deploy your build data to an external hosting solution it is now easier to configure, as all the urls you need to set are handily in one place. (See Moving build output files here).
- Support for WebCams. 5.3 adds support for the WebCamTexture class in Unity WebGL to access connected cameras on any browser which supports the getUserMedia API.
- WebGL in Unity Cloud Build is now a platform option. Team members can directly test the game/application in the browser.
- Improved documentation. For 5.3, we gave the WebGL documentation a makeover and added a lot of additional information. It was important for us to document, in detail, what things are currently not supported on the WebGL platform, or supported only on specific browsers.
- Numerous bug fixes. Unity 5.3 has 28 WebGL-specific bug fixes compared to 5.2.x – and many other fixes which benefit WebGL users but are not specific to the platform. Additionally, several other WebGL-specific bug fixes have been deployed in various patch releases during the 5.2.x release cycle, which are now all being rolled into 5.3.
Making WebGL an officially supported Unity Build Target
So far, WebGL in Unity has been available as an unsupported preview technology. With Unity 5.3, we are dropping the “Preview” label and making WebGL an officially supported build target. Our Premium and Enterprise support plans will now cover support tickets for the WebGL platform.
Unity 5.3 delivers a bunch of improvements to WebGL developers as listed above. 5.2 and 5.1 have delivered similar improvements in the past. So we feel that WebGL in Unity has come a long way since we launched it in 5.0. Similarly, browser technology has improved over that timeframe. Microsoft shipped its new Edge browser in Windows 10, which supports asm.js and which runs Unity WebGL content much better the Internet Explorer 11 ever did, giving you a wider potential audience for Unity WebGL content.
So, the WebGL platform has significantly improved since we shipped the Preview in 5.0. However, this does not mean that all features of Unity will now suddenly work in WebGL, or that performance will now match native builds, or even that any content will reliably run on any browser. There are improvements in each of these areas, but they happen very gradually. Overall, however, we feel that we have a product which works well within the constraints of the platform, and we think that this is a good time to start officially supporting the WebGL build target. We have put a lot of work into our documentation to make it clearly state what limitations you are expected to run into and on what browsers.
Working with the browser vendors
Our WebGL deployment solution relies heavily on web technologies provided by the browsers. We have been working closely with all the major browser vendors over the past few years to drive incremental improvements of these technologies.
Mozilla’s Director of Platform Product Management, Martin Best said “Today marks a milestone as Unity takes the next steps to provide full support for the WebGL export target. Mozilla pioneered technologies such as asm.js, WebGL, and Emscripten that make this possible and we are energized to continue working closely with Unity and other browser makers to create the best gaming experiences on the Web.” More info on Mozilla’s blog.
At Microsoft, David Catuhe, Principal Program Manager focused on Edge and Open Web Standards commented: “WebGL and asm.js in Microsoft Edge are an important part of providing a complete web experience to Windows 10 users. By releasing its WebGL build target, Unity enables developers to deliver great gaming experiences on the Web to our users. It’s also a great opportunity for us to continue to work together on improving WebGL, asm.js and other enhancements we are bringing to the web platform.”
Google Chrome WebGL team Brandon Jones, Zhenyao Mo and Ken Russell expressed similar sentiment for the developer community, declaring: “Unity’s support for HTML5 and WebGL deployments is one of the most exciting developments in the ecosystem to date. Developers worldwide will bring their amazing content to the web using Unity’s toolchain. We look forward to continuing to improve the performance and functionality of the web platform to enable even more exciting interactive content.”
We believe that Unity’s WebGL export is the future of gaming on the web. Join the list of Unity WebGL titles already published to the web today, such as Heroes Of Paragon, Spider Box, Big Buck Hunter.
To get started:
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