US 12,229,869 B2
Techniques for texture filtering using refracted ray cones
Tomas Akenine-Moller, Lund (SE); and Jakub Boksansky, Munich (DE)
Assigned to NVIDIA CORPORATION, Santa Clara, CA (US)
Filed by NVIDIA CORPORATION, Santa Clara, CA (US)
Filed on May 25, 2021, as Appl. No. 17/329,737.
Claims priority of provisional application 63/141,355, filed on Jan. 25, 2021.
Prior Publication US 2022/0237852 A1, Jul. 28, 2022
Int. Cl. G06T 15/06 (2011.01); A63F 13/52 (2014.01); G06T 15/04 (2011.01)
CPC G06T 15/06 (2013.01) [A63F 13/52 (2014.09); G06T 15/04 (2013.01); G06T 2210/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A computer-implemented method for rendering one or more graphics images, the method comprising:
tracing a ray cone through a three-dimensional (3D) graphics scene;
computing a two-dimensional (2D) coordinate frame based on a normal to a surface at a first hit point where the ray cone intersects the surface within the 3D graphics scene, and a projection of a direction vector associated with the ray cone;
generating a refracted ray cone based on the ray cone and the 2D coordinate frame; and
rendering a graphics image based on the refracted ray cone.