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NPAR
2006
ACM

X-toon: an extended toon shader

14 years 4 months ago
X-toon: an extended toon shader
: Some example effects achieved by our extended toon shader: continuous levels of abstraction (a); abstraction of near-silhouette regions: smoothing (b), and opacity (c); backlighting (d); and highlighting: plastic (e), and metal (f). Traditional toon shading uses a 1D texture that describes how tone varies with surface orientation relative to a given light source. In this paper we describe two extensions to the basic algorithm that support view-dependent effects. First, we replace the 1D texture with a 2D texture whose second dimension corresponds to the desired “tone detail,” which can vary with depth or surface orientation. This supports effects such as levels-of-abstraction, aerial perspective, depth-of-field, backlighting, and specular highlights. Second, we further extend the toon shader to use a modified normal field that can range from the original normals to a simpler set ls taken from an “abstracted shape.” A global shape detail parameter determines the degree of ...
Pascal Barla, Joëlle Thollot, Lee Markosian
Added 14 Jun 2010
Updated 14 Jun 2010
Type Conference
Year 2006
Where NPAR
Authors Pascal Barla, Joëlle Thollot, Lee Markosian
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