Five-dimensional occlusion queries

Patent metadata

Field	Value
Publication number	US-8970587-B2
Application number	US-201213569416-A
Country	US
Kind code	B2
Filing date	Aug 8, 2012
Priority date	Jan 16, 2012
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

A standard occlusion query (OQ) may be generalized to five dimensions, which can be used for motion blurred, defocused, occlusion culling. As such, the occlusion query concept is generalized so that it can be used within 5D rasterization, which is used for rendering of motion blur and depth of field. For 5D rasterization, occlusion culling may be done with OQs as well, applied to solve other rendering related problems.

First claim

What is claimed is:

1. A method comprising:
traversing triangles within a tile for an occlusion query in a graphics processor;
for that tile, computing intervals for lens, time and depth parameters; detecting which maximum depth values need to be considered using lens and time parameter intervals;
comparing a depth of a moving defocused triangle to the maximum depth values that;
if the depth of the moving defocused triangle is greater than all of the maximum depth values, th…

Assignees

• Nilsson Jim K
• Akenine-Möller Tomas G
• Intel Corp

Inventors

• Nilsson Jim K
• Akenine-Möller Tomas G

Classifications

• G06T13/00 Primary

  Physics · mapped topic

• G06T15/405

  Physics · mapped topic