RADV Vulkan Driver Gets An On-Disk Shader Cache
Written by Michael Larabel in Vulkan on 11 October 2017 at 09:08 PM EDT. 7 Comments
VULKAN --
The RADV Radeon Vulkan driver in Mesa now supports an on-disk shader cache.

Timothy Arceri working for Valve who previously spearheaded the RadeonSI OpenGL on-disk shader cache support has added a similar on-disk shader cache for the RADV Vulkan driver. Vulkan supports the concept of a pipeline cache for reusing cached objects between pipelines and runs of a game/application.

As a fallback to a application/game not supporting a Vulkan pipeline cache, RADV now has its own on-disk shader cache to re-use compiled shaders on subsequent runs.

In implementing this new cache the commit explains, "If the app provided in-memory pipeline cache doesn't yet contain what we are looking for, or it doesn't provide one at all then we fallback to the on-disk cache."

This change is present for this quarter's Mesa 17.3 update. On-disk shader caches help with game load times in particular, but will be interesting to see the benefits of this in RADV if there are many apps/games not making use of a pipeline cache.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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