Raymarching Distance Fields with CUDA

Raymarching is a technique for rendering implicit surfaces using signed distance fields. It has been known and used since the 1980s fractals CSG (constructive solid geometry) surfaces, but rarely commercial applications such as film 3D games. was first photorealistic in mid 2000s by demoscene developers hobbyist graphics programmers, receiving little to no attention from academic community professional engineers. In present work, we explain why use of Simple Fast Multimedia Library (SFML) nearly all existing approaches leads number inefficiencies, hence set out develop CUDA oriented approach instead. We next show that usual data handling pipeline further unnecessary flow overheads therefore propose novel structure eliminates much redundancy manner which are processed passed. proceed introduce series structures were designed with specific aim exploiting pipeline’s strengths terms efficiency while achieving high degree photorealism, well accompanying models optimizations ultimately result an engine capable real-time on complex scenes arbitrary objects. Lastly, effectiveness our framework demonstrated experiments compare both visual fidelity computational leading open source solutions, namely Unreal Engine Blender.