公开(公告)号：US20210287419A1

公开(公告)日：2021-09-16

申请号：US17159399

申请日：2021-01-27

Applicant: Intel Corporation

Inventor： Gabor LIKTOR ,  Karthik VAIDYANATHAN ,  Jefferson AMSTUTZ ,  Atsuo KUWAHARA ,  Michael DOYLE ,  Travis SCHLUESSLER

IPC: G06T15/00 ,  G06T1/60 ,  G06T15/06

Abstract: Apparatus and method for speculative execution of hit and intersection shaders on programmable ray tracing architectures. For example, one embodiment of an apparatus comprises: single-instruction multiple-data (SIMD) or single-instruction multiple-thread (SIMT) execution units (EUs) to execute shaders; and ray tracing circuitry to execute a ray traversal thread, the ray tracing engine comprising: traversal/intersection circuitry, responsive to the traversal thread, to traverse a ray through an acceleration data structure comprising a plurality of hierarchically arranged nodes and to intersect the ray with a primitive contained within at least one of the nodes; and shader deferral circuitry to defer and aggregate multiple shader invocations resulting from the traversal thread until a particular triggering event is detected, wherein the multiple shaders are to be dispatched on the EUs in a single shader batch upon detection of the triggering event.