vkCmdBuildClusterAccelerationStructureIndirectNV(): pCommandInfos->srcInfosArray.stride may be zero

[zeux]

Environment:

• OS: Ubuntu Linux 25.10
• GPU and driver version: GeForce RTX 5070 Ti + driver 580.95.05
• SDK or header version if building from repo: SDK 1.4.328.1
• Options enabled (synchronization, best practices, etc.): -

Describe the Issue

Using vkCmdBuildClusterAccelerationStructureIndirectNV with srcInfosArray.stride=0 produces a validation error

Expected behavior

The specification states:

srcInfosArray is a VkStridedDeviceAddressRegionKHR where input data for the build or move operation is read from. If the stride is 0, the structures are assumed to be packed tightly. Its format is dependent on VkClusterAccelerationStructureInputInfoNV::opType as per the table below.

... and yet, using srcInfosArray.stride = 0 produces a validation error:

ERROR: vkCmdBuildClusterAccelerationStructureIndirectNV(): pCommandInfos->srcInfosArray.stride (0) must be greater than size of VK_CLUSTER_ACCELERATION_STRUCTURE_OP_TYPE_BUILD_TRIANGLE_CLUSTER_NV (64).
The Vulkan spec states: The stride in srcInfosArray must be greater than the type of structure the address is describing (https://vulkan.lunarg.com/doc/view/1.4.328.1/linux/antora/spec/latest/chapters/accelstructures.html#VUID-VkClusterAccelerationStructureCommandsInfoNV-srcInfosArray-10476)

This is easy to work around by providing a non-zero stride, but does not match the spec text.

[spencer-lunarg]

similar to #10971

[spencer-lunarg]

@huili0423 can you get a fix for this since this is the extension you just added

[huili0423]

Hi @spencer-lunarg , I noticed this issue has been marked as completed. Do I still need to make any fixes for it? Thanks!

[spencer-lunarg]

@huili0423 it was more trivial than expected after I looked, so took care of it