Draco developed by Google and Pixar supports USD format to accelerate 3D object transmission & lt; Forward & gt;

writing / F. Sebastian Grassia, Pixar and Jamieson Brettle, Chrome Media

original text https://opensource.googleblog.com/2019/11/google-and-pixar-add-draco-compression.html

Original translation : https://cloud.tencent.com/developer/article/1554798?from=article.detail.2048894

Google and Pixar Has cooperated to Draco Compression added to USD In file , In order to achieve smaller grid transmission , And in web And real-time object delivery in mobile applications .

Draco Is an open source compression library , For improvement 3D Storage and transmission of objects —— Including compression points 、 Connection information 、 Texture coordinates 、 Color information 、 Normals and any other attributes related to geometry .

Use Draco, Applications can present complex 3D object , Without affecting visual fidelity . For users , This means that the application will now download faster ,3D Graphics will also load faster , And it can be transmitted through any type of network , Without considering bandwidth .

USD It meets the requirements of powerful and scalable exchange and enhancement 3D Requirements of scenarios , These scenes may consist of many models and animations .USD You can also assemble and organize any number of elements into virtual sets 、 Scenes and shots , Transfer from one application to another , And use a consistent API Edit them losslessly in a scene map ( As a substitute ).USD Provides a rich toolbox , For reading 、 writing 、 Edit and quick preview 3D Geometry and shadows .

We are in a representative group USD Tested on the object Draco Compression performance , Find out Draco The average compressed object of exceeds 15 times . In a typical 4G On the Internet , The loading speed of these assets will be increased to 2.5 times , Plan with less user data at the same time .

use Draco Compress USD Objects can drive the development of a wider range of use cases , Especially when delivering runtime assets to consumer devices . from 3D Business to complex AR scene , Anything can benefit from reduced data requirements and shorter release times .

We're looking forward to seeing how people combine Draco Compression and USD Format . I hope you can have a look GitHub（https://github.com/PixarAnimationStudios/USD） The code on , Let us know what you think and how you plan to use it !