NVIDIA Corporation
TECHNIQUES FOR ANISOTROPIC TEXTURE FILTERING USING RAY CONES

Abstract:

One embodiment of a method for computing a texture color includes tracing a ray cone through a graphics scene, determining at least one axis of an ellipse formed by the ray cone intersecting a plane associated with geometry within the graphics scene at a hit point, computing one or more gradients along the at least one axis of the ellipse, and computing a texture color based on the one or more gradients and a texture.