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The Unity Burst Compiler transforms your C# code into highly optimized machine code. Since the first stable release of Burst Compiler a year ago, we have been working to improve the quality, experience, and robustness of the compiler. As we’ve released a major new version, Burst 1.3, we would like to take this opportunity to give you more insights about why we are excited about a key performance focused feature - our new enhanced aliasing support. The new compiler intrinsics Unity.Burst.CompilerServices.Aliasing.ExpectAliased and Unity.Burst.CompilerServices.Aliasing.ExpectNotAliased allow users to gain deep insight into how the compiler understands the code they write. These new intrinsics are combined with extended support for the [Unity.Burst.NoAlias] attribute, we've given our users a new superpower in the quest for performance.
As part of a recent session at Unite Now, we discussed how technology in the Burst compiler enables developers who are building projects with Unity to take advantage of the Arm Neon instruction set. You can use the Burst compiler when targeting Android devices to improve the performance of Unity projects supported by Arm architecture. Unity and Arm have formed a partnership to enhance the mobile game development experience for the billion-plus Arm-powered mobile devices in the Android ecosystem. For game developers, performance is paramount. Year after year, Arm invests in improving its CPU and GPU technologies to provide the advances in performance and efficiency needed to build richer experiences. Recently, Arm announced two new products, Cortex-A78, which provides greatly improved power efficiency, and the even more impressive Cortex-X1. These hardware developments are complemented by advances in compiler technology for the Arm architecture. Compilers ensure that when you develop high-performance games, they are translated and optimized into efficient binaries that make the best use of the Arm architecture’s features.
The Unity Burst Compiler transforms your C# code into highly optimized machine code. One question that we get often from our amazing forum users like @dreamingimlatios surrounds in parameters to functions within Burst code. Should developers use them and where? We’ve put together this post to try and explain them a bit more in detail.
Our High Performance C# (HPC#) compiler technology, Burst, has gone from strength to strength. In the latest version Burst 1.5, we’ve made some major improvements. In this post we’ll take you through the headline features, and show you how to make the most of Burst in your projects.
Real-time 3D (RT3D) is transforming how we approach social impact, and we’re excited to continue supporting creators who harness this technology to build a more equitable, inclusive, and sustainable world. Today, we’re thrilled to announce that applications are open for the Unity for Humanity 2025 Grant, an opportunity for creators to secure funding for their social impact projects.
Due to popular demand, we have decided to open our bug database to the public. Take a look at the issue tracker and vote on the bugs that are most important to you here. We want to enable you to search our known bugs easily, so you can identify problems in your games and find workarounds faster. As a user, you can also comment on bugs, vote on bugs that are important to you, suggest workarounds you found or add information. We will use this information in our ongoing prioritization of bugs, so you can have a very real impact on the future of Unity. When you have logged in with your Unity Developer Network account, you will have 10 votes you can place on active bugs. If a bug is resolved or in other ways removed, the vote is returned to you. You can always see a list of your own votes on the site. Privacy has been a huge concern for us, so ANY bug which reveals ANY information about the submitter will NOT be made public. It is a manual task for QA to mark bugs public and the default is that a bug is NOT public. Likewise, we are not sharing projects, logs, attachments or communication on any bug even though it might help others. We simply can't risk any privacy to be invaded. The bugs you will see on the site are all confirmed internally in Unity. They are reproducible and acknowledged. If you have sent a report to us, it will not be visible before we have processed it, so it may not even become public, depending on how we decide to handle it. The fields we use are set specifically by us, so no part of what you write will be public without editing and your email address is nowhere on the site. We are very excited about opening up this new way to communicate with you. We hope it will result in an even tighter and more relevant prioritization of bugs. Enjoy, and use your voting power!
Culling is only possible when a system has predictable behaviour. Turning on a single module will not only add to that module’s overhead, but may increase the overall systems impact due to switching from procedural to non-procedural mode. Changing values via script will prevent culling. Using custom culling can provide a performance benefit, but only you the developer can decide if and when it is appropriate. Take into consideration the type of effect, if the player may notice it isn’t animating when invisible, and if it is possible to predict the area it will affect?