Vulkan is deprecating host-side ray tracing acceleration structure build commands in favor of a single, device-address-based path. This aligns Vulkan Ray Tracing with the direction of DirectX Raytracing, modern engine architecture, and hardware trends.

In the six years since Vulkan Ray Tracing launched, the host-side path has seen limited adoption. Developers generally found it more cumbersome than helpful, while implementers had to maintain par

The Khronos Group is a consortium of technology companies and industry experts that develops open standards for graphics, compute, and vision processing. Through initiatives like Vulkan, OpenGL, and WebGL, Khronos Group defines cross-platform APIs for accelerating graphics rendering and computational tasks across diverse hardware platforms. Developers can learn about Khronos Group's standards, participate in working groups, and leverage open APIs for building high-performance graphics and compute applications.

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Vulkan is deprecating host-side acceleration structure build commands (accelerationStructureHostCommands and micromapHostCommands) in favor of the device-address-based path. The change is a deprecation, not a removal — existing code continues to work. New extensions will not add host-side equivalents, and validation tooling will begin flagging their use. Migration involves switching to Cmd-prefixed device-side commands, moving geometry data to device memory, and handling asynchronous execution. The decision was driven by low adoption, high maintenance cost for implementers, alignment with DirectX Raytracing's device-only model, and the need to support the new VK_KHR_device_address_commands extension cleanly.

Vulkan Ray Tracing: Deprecating Host-Side Acceleration Structure Builds