TraceMotionRay

Description

Traces a ray with motion blur support through the acceleration structure.

Signature

void TraceMotionRay<payload_t>(
    RaytracingAccelerationStructure AccelerationStructure,
    uint RayFlags,
    uint InstanceInclusionMask,
    uint RayContributionToHitGroupIndex,
    uint MultiplierForGeometryContributionToHitGroupIndex,
    uint MissShaderIndex,
    RayDesc Ray,
    float CurrentTime,
    inout payload_t Payload);

Generic Parameters

payload_t

Parameters

AccelerationStructure : RaytracingAccelerationStructure

The acceleration structure to traverse

RayFlags : uint

Flags controlling ray behavior

InstanceInclusionMask : uint

Mask for filtering instance visibility

RayContributionToHitGroupIndex : uint

Offset for hit group indexing

MultiplierForGeometryContributionToHitGroupIndex : uint

Multiplier for geometry-based hit group indexing

MissShaderIndex : uint

Index of the miss shader to execute if no hit is found

Ray : RayDesc

Description of the ray to trace

CurrentTime : float

Time value for motion blur interpolation

Payload : payload_t

Structure for passing data between shaders

Remarks

Extended version of TraceRay with motion blur support

Availability and Requirements

Defined for the following targets:

hlsl

Available in stages: raygen, closesthit, miss.

Requires capability: hlsl_nvapi.

glsl

Available in stages: raygen, closesthit, miss.

spirv

Available in stages: raygen, closesthit, miss.

Requires capabilities: spvRayTracingMotionBlurNV, spvRayTracingKHR.