Improved Shader and Texture Level of Detail Using Ray Cones

In real-time ray tracing, texture filtering is an important technique to increase image quality. Current games, such as Minecraft with RTX on Windows 10, use ray cones to determine texture-filtering footprints. In this paper, we present several improvements to the ray-cones algorithm that improve image quality and performance and make it easier to adopt in game engines. We show that the total time per frame can decrease by around 10% in a GPU-based path tracer, and we provide a public-domain implementation.

Jakub Boksansky (NVIDIA)
Laurent Belcour (Unity Technologies)
Alexey Panteleev (NVIDIA)
Oli Wright (NVIDIA)
Publication Date: 
Tuesday, April 27, 2021
Research Area: 
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