VkAccelerationStructureMotionInstanceNV(3)

Name

VkAccelerationStructureMotionInstanceNV - Structure specifying a single acceleration structure motion instance for building into an acceleration structure geometry

C Specification

Acceleration structure motion instances can be built into top-level acceleration structures. Each acceleration structure instance is a separate entry in the top-level acceleration structure which includes all the geometry of a bottom-level acceleration structure at a transformed location including a type of motion and parameters to determine the motion of the instance over time.

An acceleration structure motion instance is defined by the structure:

// Provided by VK_NV_ray_tracing_motion_blur
typedef struct VkAccelerationStructureMotionInstanceNV {
    VkAccelerationStructureMotionInstanceTypeNV     type;
    VkAccelerationStructureMotionInstanceFlagsNV    flags;
    VkAccelerationStructureMotionInstanceDataNV     data;
} VkAccelerationStructureMotionInstanceNV;

Members

type is a VkAccelerationStructureMotionInstanceTypeNV enumerant identifying which type of motion instance this is and which type of the union is valid.
flags is currently unused, but is required to keep natural alignment of data.
data is a VkAccelerationStructureMotionInstanceDataNV containing motion instance data for this instance.

Description

If writing this other than with a standard C compiler, note that the final structure should be 152 bytes in size.

Valid Usage (Implicit)

VUID-VkAccelerationStructureMotionInstanceNV-type-parameter
type must be a valid VkAccelerationStructureMotionInstanceTypeNV value
VUID-VkAccelerationStructureMotionInstanceNV-flags-zerobitmask
flags must be 0
VUID-VkAccelerationStructureMotionInstanceNV-staticInstance-parameter
If type is VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_STATIC_NV, the staticInstance member of data must be a valid VkAccelerationStructureInstanceKHR structure
VUID-VkAccelerationStructureMotionInstanceNV-matrixMotionInstance-parameter
If type is VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_MATRIX_MOTION_NV, the matrixMotionInstance member of data must be a valid VkAccelerationStructureMatrixMotionInstanceNV structure
VUID-VkAccelerationStructureMotionInstanceNV-srtMotionInstance-parameter
If type is VK_ACCELERATION_STRUCTURE_MOTION_INSTANCE_TYPE_SRT_MOTION_NV, the srtMotionInstance member of data must be a valid VkAccelerationStructureSRTMotionInstanceNV structure

Document Notes

For more information, see the Vulkan Specification.

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.