The following cases are from the "Digital Twin World White Paper (2023 Edition)"
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Real-time cloud rendering is the third large-scale digital twin application delivery solution in parallel with the development of locally deployed applications based on game engines and applications developed based on WebGL. The advantages.
Real-time cloud rendering is a cloud rendering platform based on distributed GPU clusters that provides audio and video streaming and application cloudification. Users only need to upload the application package, publish the application, and access the link in three steps to experience the rendering experience in the cloud. It is suitable for scenarios such as GPU rendering workstations, digital twins, cloud games, virtual house inspections, car rendering, exhibitions, smart cultural tourism, and AR/VR/MR.
1) Technical comparison between cloud rendering and local rendering
2) Typical cloud rendering implementation
(1) UE Cloud Rendering - Pixel Streaming
Through UE's cloud rendering pixel push function, the rendered picture can be transmitted to the web in real time, allowing users to access the digital twin application in the browser. The advantage of this solution is that it allows users to access the digital twin on any device, as long as they can open a browser. At the same time, this solution does not require users to install any client software, which is very beneficial for the promotion and dissemination of digital twins. In addition, the Web side has richer styles and interactive design capabilities, which can make the digital twin more vivid and intuitive. However, UE-based cloud rendering pixel streaming also has certain limitations, which are only applicable to UE models, and there are also certain limitations in compatibility with different browsers in actual projects.
The framework of pixel streaming technology consists of two parts: pixel streaming plug-in Pixel Streaming, signaling and web server. The Pixel Streaming Plugin runs in UE, encodes the final result of each rendered frame using video compression, packages these video frames together with game audio into a media stream, and sends that stream to one or more connected browsers. The signaling and web server are responsible for negotiating the connection between the browser and the pixel stream plug-in, and providing the browser with an HTML and JavaScript environment for playing media streams.
(2) 3DCAT real-time cloud rendering
3DCAT provides a one-stop Iaas+Pass cloud rendering solution, provides 3D visualization and interactive design services for various scenarios, cooperates with the cloud rendering platform, deploys 3D applications to run on the cloud, and uses cloud resources for real-time calculation and output of graphic data. And the running results are pushed to the terminal in the form of "Raystreaming" for presentation, providing a lightweight cloud experience with low latency and high image quality. Improve the collaboration, mobility, dissemination and replicability of digital twin applications.
With real-time rendering and cloud streaming technology, interactive 3D experiences are more immersive and accessible than ever before, and anyone can easily experience immersive applications of various virtual displays anywhere in the world.
3DCAT cloud rendering solution application architecture
Cloud rendering implementation steps:
① Upload 3D application: upload the application to the 3DCAT real-time rendering cloud platform, and release it once and it will be available for a long time;
② Generate application access methods: share the URL or QR code with users to support mass user access;
③ Multi-terminal access/interaction: No need to log in to the platform account, no need to download the application; any networked device can run the application through the URL or QR code.
With the 3DCAT cloud rendering solution, all rendering tasks are placed on the high-performance server, and users can smoothly access 3D images with excellent quality only through the web page. At the same time, cloud rendering allows users to access the large screen of the project on different terminals. It is perfectly compatible with computers, mobile terminals and other devices, helping users to view the large screen through various devices anytime, anywhere, control the progress of the project, and communicate in real time.
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