公开(公告)号：US12260486B2

公开(公告)日：2025-03-25

申请号：US17946828

申请日：2022-09-16

Applicant: NVIDIA Corporation

Inventor： John Burgess ,  Gregory Muthler ,  Nikhil Dixit ,  Henry Moreton ,  Yury Uralsky ,  Magnus Andersson ,  Marco Salvi ,  Christoph Kubisch

IPC: G06T15/50 ,  G06T1/60 ,  G06T9/00 ,  G06T15/00 ,  G06T15/06 ,  G06T15/40 ,  G06T17/10 ,  G06T17/20 ,  G06T19/20

Abstract: A Displaced Micro-mesh (DMM) primitive enables high complexity geometry for ray and path tracing while minimizing the associated builder costs and preserving high efficiency. A structured, hierarchical representation implicitly encodes vertex positions of a triangle micro-mesh based on a barycentric grid, and enables microvertex displacements to be encoded efficiently (e.g., as scalars linearly interpolated between minimum and maximum triangle surfaces). The resulting displaced micro-mesh primitive provides a highly compressed representation of a potentially vast number of displaced microtriangles that can be stored in a small amount of space. Improvements in ray tracing hardware permit automatic processing of such primitive for ray-geometry intersection testing by ray tracing circuits without requiring intermediate reporting to a shader.

公开(公告)号：US12249022B2

公开(公告)日：2025-03-11

申请号：US17946515

申请日：2022-09-16

Applicant: NVIDIA Corporation

Inventor： John Burgess ,  Gregory Muthler ,  Nikhil Dixit ,  Henry Moreton ,  Yury Uralsky ,  Magnus Andersson ,  Marco Salvi ,  Christoph Kubisch

IPC: G06T15/06 ,  G06T1/60 ,  G06T9/00 ,  G06T15/40 ,  G06T17/10 ,  G06T17/20 ,  G06T19/20

Abstract: A Displaced Micro-mesh (DMM) primitive enables high complexity geometry for ray and path tracing while minimizing the associated builder costs and preserving high efficiency. A structured, hierarchical representation implicitly encodes vertex positions of a triangle micro-mesh based on a barycentric grid, and enables microvertex displacements to be encoded efficiently (e.g., as scalars linearly interpolated between minimum and maximum triangle surfaces). The resulting displaced micro-mesh primitive provides a highly compressed representation of a potentially vast number of displaced microtriangles that can be stored in a small amount of space. Improvements in ray tracing hardware permit automatic processing of such primitive for ray-geometry intersection testing by ray tracing circuits without requiring intermediate reporting to a shader.