Efficient Rendering of Rounded Corners and Edges for Convex Objects
| Autor: | Mickaël Ribadière, Daniel Meneveaux, Sébastien Horna, Pierre Poulin, Simon Courtin |
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| Rok vydání: | 2019 |
| Předmět: |
Computer science
Regular polygon 020207 software engineering 02 engineering and technology Rendering algorithms 01 natural sciences Bevel 0104 chemical sciences Rendering (computer graphics) 010404 medicinal & biomolecular chemistry Computer graphics (images) Path tracing Polygon 0202 electrical engineering electronic engineering information engineering Polygon mesh Ray tracing (graphics) Shading Shader ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Advances in Computer Graphics ISBN: 9783030225131 CGI |
| Popis: | Many manufactured objects and worn surfaces exhibit rounded corners and edges. These fine details are a source of sharp highlights and shading effects, important to our perception between joining surfaces. However, their representation is often neglected because they introduce complex geometric meshing in very small areas. This paper presents a new method for managing thin rounded corners and edges without explicitly modifying the underlying geometry, so as to produce their visual effects in sample-based rendering algorithms (e.g., ray tracing and path tracing). Our method relies on positioning virtual spheres and cylinders, associated with a detection and acceleration structure that makes the process more robust and more efficient than existing bevel shaders. Moreover, using our implicit surfaces rather than polygonal meshes allows our method to generate extreme close views of the surfaces with a much better visual quality for little additional memory. We illustrate the achieved effects and analyze comparisons generated with existing industrial software shaders. |
| Databáze: | OpenAIRE |
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