OptixInstance Struct Reference

#include <optix_types.h>

Public Attributes
float	transform [12]
unsigned int	instanceId
unsigned int	sbtOffset
unsigned int	visibilityMask
unsigned int	flags
OptixTraversableHandle	traversableHandle
unsigned int	pad [2]

Detailed Description

Instances.

See also

OPTIX_BUILD_INPUT_TYPE_INSTANCE_POINTERS instances and aabbs should be in...">OptixBuildInputInstanceArray::instances

Member Data Documentation

flags

unsigned int OptixInstance::flags

Any combination of OptixInstanceFlags is allowed.

instanceId

unsigned int OptixInstance::instanceId

Application supplied ID. The maximal ID can be queried using OPTIX_DEVICE_PROPERTY_LIMIT_MAX_INSTANCE_ID.

pad

unsigned int OptixInstance::pad[2]

round up to 80-byte, to ensure 16-byte alignment

sbtOffset

unsigned int OptixInstance::sbtOffset

SBT record offset. In a traversable graph with multiple levels of instance acceleration structure (IAS) objects, offsets are summed together. The maximal SBT offset can be queried using OPTIX_DEVICE_PROPERTY_LIMIT_MAX_SBT_OFFSET.

transform

float OptixInstance::transform[12]

affine object-to-world transformation as 3x4 matrix in row-major layout

traversableHandle

OptixTraversableHandle OptixInstance::traversableHandle

Set with an OptixTraversableHandle.

visibilityMask

unsigned int OptixInstance::visibilityMask

Visibility mask. If rayMask & instanceMask == 0 the instance is culled. The number of available bits can be queried using OPTIX_DEVICE_PROPERTY_LIMIT_NUM_BITS_INSTANCE_VISIBILITY_MASK.