Imagination Technologies Limited

Other

Aaron Dwyer

Luke Tilman Peterson

Neils Nesse

James Alexander McCombe

James Jones

Benjamin Dwyer

Karen K Dwyer

James A Mccombe

Luke T Peterson

James A McCombe

Systems and methods for producing an acceleration structure provide for subdividing a 3-D scene into a plurality of volumetric portions, which have different sizes, each being addressable using a multipart address indicating a location and a relative size of each volumetric portion. A stream of primitives is processed by characterizing each according to one or more criteria, selecting a relative size of volumetric portions for use in bounding the primitive, and finding a set of volumetric portions of that relative size which bound the primitive. A primitive ID is stored in each location of a cache associated with each volumetric portion of the set of volumetric portions. A cache location is selected for eviction, responsive to each cache eviction decision made during the processing. An element of an acceleration structure according to the contents of the evicted cache location is generated, responsive to the evicted cache location.

Systems and methods for 3-D scene acceleration structure creation and updating

Graphics processing system configured to perform ray tracing. Rays are bundled together and processed together. When differential data is needed by a shader, the data of a true ray in the bundle can be used rather than processing separate tracker rays.

Methods and graphics processing units for determining differential data for rays of a ray bundle

During tracing of a primary ray in a 3-D space (e.g., a 3-D scene in graphics rendering), a ray is found to intersect a primitive (e.g., a triangle) located in the 3-D space. Secondary ray(s) may be generated for a variety of purposes. For example, occlusion rays may be generated to test occlusion of a point of intersection between the primary ray and primitive is illuminated by any of the light(s). An origin for each secondary ray can be modified from the intersection point based on characteristics of the primitive intersected. For example, an offset from the intersection point can be calculated using barycentric coordinates of the intersection point and interpolation of one or more parameters associated with vertices defining the primitive. These parameters may include a size of the primitive and differences between a geometric normal for the primitive and a respective additional vector supplied with each vertex.

Rendering a scene using secondary ray tracing

Normal offset smoothing

Rendering a 3-D scene using secondary ray tracing

Rendering a 3-D scene using normal offset smoothing

A spring-loaded coupling mechanism includes a tubular housing having an internal cavity, a forward end, a rearward end, and a tapered forward portion and further includes a catch member which is connected to a first elongate support member and is biasedly seated in said tapered portion of said housing, the first elongate support member being attached to an object, and also includes a connecting member which is attached to a second elongate support member and which is extendible and releasably securable inside the housing with the second elongate support member being substantially taut and being attached to another object. This spring-loaded coupling mechanism easily and conveniently ties at least two objects together such as a boat being moored to a dock or on a trailer.

Spring-loaded coupling mechanism

Growing community of inventors

San Francisco, CA, United States of America

Aaron Dwyer