18725519. DYNAMICALLY MODIFYING RAY CAST INTERSECTION ACCELERATION STRUCTURES (Google LLC)

DYNAMICALLY MODIFYING RAY CAST INTERSECTION ACCELERATION STRUCTURES

Organization Name

Google LLC

Inventor(s)

Douglas Sim Dietrich, Jr. of Los Gatos CA US

DYNAMICALLY MODIFYING RAY CAST INTERSECTION ACCELERATION STRUCTURES

This abstract first appeared for US patent application 18725519 titled 'DYNAMICALLY MODIFYING RAY CAST INTERSECTION ACCELERATION STRUCTURES

Original Abstract Submitted

Systems and techniques are provided for dynamically modifying an intersection acceleration structure (IAS) used to accelerate ray cast rendering of a three-dimensional (3D) scene. A frame of the 3D scene is rendered via a set of ray casting operations performed in accordance with a first IAS, the first IAS including a plurality of bounding volumes that each includes a portion of the 3D scene. For each bounding volume, a subset of virtual light rays is tracked, the virtual light rays being associated with the set of ray casting operations and encountering the bounding volume during the rendering of the frame. Based on the subset of virtual light rays associated with each bounding volume, a modified second IAS is generated for rendering the 3D scene.