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Dynamic tessellation definition12/6/2023 ![]() If one or more polygons are then defined within the primitive, such that one new vertex lies on each edge of the primitive (thereby dividing each edge into two segments), then the tessellation rate will be 2. Thus, for example, a primitive has (by definition) a tessellation rate of 1. Formally, the tessellation rate is the number of segments into which an edge of the primitive is divided by the vertices of the polygons defined within the primitive. The process of defining polygons within a primitive is referred to as “tessellation”, and the number of polygons defined within a primitive is given by the “tessellation rate”. However, since smooth animation requires that an image be refreshed at a rate of at least 30 frames per second, a compromise between animation performance and rendering detail must normally be found. Current graphics processing systems are typically capable of rendering millions of polygons per second. As a result, rendering a highly detailed image (consisting of a large number of polygons) of an object requires more processor resources, and thus typically takes longer, than rendering an image of the same object with less detail. However, the amount of processing resources required to render an image is directly related to the number of polygons within the mesh. Thus, for example, a large number of small polygons are used where a high level of surface detail is required, whereas a smaller number of large polygons can be used where less detail is needed. wire-frame surface description, tesselationĪs is also well known in the art, the level of detail in the rendered image is directly related to the size of the polygons within the mesh. G06T17/20- Finite element generation, e.g.G06T17/00- Three dimensional modelling, e.g.G06T- IMAGE DATA PROCESSING OR GENERATION, IN GENERAL. ![]() G06- COMPUTING CALCULATING OR COUNTING.Adjusted expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: MATROX ELECTRONIC SYSTEMS LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALSTOM (SWITZERLAND) LTD Application granted granted Critical Publication of US6940505B1 publication Critical patent/US6940505B1/en Assigned to MATROX GRAPHICS, INC. Assignors: BEAUDOIN, PHILLIPPE JEAN, CARDENAS, JUAN MIGUEL GUARDADO, OSTIGUY, JEAN-JACQUES, SAVINE, DMITRI Assigned to ALSTOM TECHNOLOGY LTD reassignment ALSTOM TECHNOLOGY LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). reassignment MATROX ELECTRONIC SYSTEMES LTD. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Matrox Electronic Systems Ltd filed Critical Matrox Electronic Systems Ltd Priority to US10/147,805 priority Critical patent/US6940505B1/en Assigned to MATROX ELECTRONIC SYSTEMES LTD. Original Assignee Matrox Electronic Systems Ltd Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime, expires Application number US10/147,805 Inventor Dmitri Savine Philippe Jean Beaudoin Juan Miguel Guardado Cardenas Jean-Jacques Ostiguy Current Assignee (The listed assignees may be inaccurate. Google Patents Dynamic tessellation of a base meshĭownload PDF Info Publication number US6940505B1 US6940505B1 US10/147,805 US14780502A US6940505B1 US 6940505 B1 US6940505 B1 US 6940505B1 US 14780502 A US14780502 A US 14780502A US 6940505 B1 US6940505 B1 US 6940505B1 Authority US United States Prior art keywords edge vertex tessellation calculating base Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US6940505B1 - Dynamic tessellation of a base mesh US6940505B1 - Dynamic tessellation of a base mesh
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