hiprtSceneBuildInput

Build input for the scene.

Scene consists of a set of instances. Each of the instances is defined by:

• Root pointer of the corresponding geometry

• Transformation matrix

• Mask

Instances can refer to the same geometry, but with different transformation matrices (essentially implementing instancing). Mask is used to implement ray masking: ray mask is bitwise &ded with an instance mask and no intersections are evaluated with the primitive of corresponding instance if the result is 0.

Name	Type	Description
instanceGeometries	hiprtDevicePtr	Array of instanceCount pointers to geometries.
instanceTransformHeaders	hiprtDevicePtr	Array of instanceCount transform headers (optional: per object frame assumed if NULL).
instanceFrames	hiprtDevicePtr	Array of frameCount frames (supposed to be ordered according to time).
instanceMasks	hiprtDevicePtr	Per object bit masks for instance masking (optional: if NULL masks treated as 0xFFFFFFFF).
nodes	hiprtBvhNodeList*	Custom Bvh nodes (optional).
instanceCount	uint32_t	Number of instances.
frameCount	uint32_t	Number of frames (such that instanceCount <= frameCount).