Displacement mapping: Difference between revisions

Revision as of 17:42, 18 June 2014

Revision as of 09:42, 24 July 2015

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{{No footnotes|date=August 2011}}

{{multiple image

[[Image:Displacement.jpg|thumb|Displacement mapping]]

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| align = right

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| width = 160

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|image1=Displacement.jpg

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|caption1=<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Displacement mapping in mesh.</div>

|alt1=Cartesian transport

|image2=Displace Map.svg

|width2 = 160

|caption2=<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">Displacement mapping with SVG filter effects.</div>

|alt2=Polar transport

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'''Displacement mapping''' is an alternative computer graphics technique in contrast to [[bump mapping]], [[normal mapping]], and [[parallax mapping]], using a ([[procedural texture|procedural]]-) [[texture mapping|texture-]] or [[heightmap|height map]] to cause an effect where the actual geometric position of points over the textured surface are ''displaced'', often along the [[Locally|local]] [[surface normal]], according to the value the texture function evaluates to at each point on the surface. It gives surfaces a great sense of depth and detail, permitting in particular self-occlusion, [[self-shadowing]] and silhouettes; on the other hand, it is the most costly of this class of techniques owing to the large amount of additional geometry.