DirectStorage 1.1 Coming Soon
(devblogs.microsoft.com)https://devblogs.microsoft.com/directx/directstorage-1-1-coming-soon/For Gamers:
What is asset compression and how does GPU decompression change games?
Games require massive amounts of data to build immersive worlds – every character, object, and landscape has “assets” describing characteristics like shape, lighting, and color. This adds up to hundreds of gigabytes of data. To reduce the overall package size of a game, these assets are compressed. When a game is run, the assets are transferred to system memory, where the CPU decompresses the data before it is finally copied into GPU memory to be used as needed. The transfer and decompression of these assets on gaming devices contributes heavily to load times and limits how much detail can be included in open world scenes.
DirectStorage 1.0 improves the data transfer part of this process. Advances in Windows 11 combined with DirectStorage allow developers to make use of the higher bandwidth of NVMe drives. DirectStorage enabled games installed on NVMe drives should expect to see reductions in load times by up to 40%. After enhancing this part of the pipeline, developers will want to improve decompression performance next.
Typically, decompression work is done on the CPU because compression formats have historically been optimized for CPUs only. We are offering an alternative method in DirectStorage 1.1 by moving the decompression of those assets to the GPU instead – known as “GPU decompression.” Graphics cards are extremely efficient at performing repeatable tasks in parallel, and we can utilize that capability along with the bandwidth of a high-speed NVMe drive to do more work at once. As a result, the amount of time it takes for an asset to load decreases, reducing level load times and improving open world streaming.
