Difference between revisions of "Decal"
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| − | + | A texture with [[Opacity map|transparency]] on a floating polygon, so that it appears to be painted directly on the underlying mesh. When placing decals, care must be taken to avoid [[Z-Fighting]]. Decals are commonly used for effects such as bullet marks, graffiti, broken edges, and tire tracks. | |
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| − | A texture with [[Opacity map|transparency]] on a floating polygon, so that it appears to be painted directly on the underlying mesh. When placing decals, care must be taken to avoid [[Z-Fighting]]. | + | |
| − | + | For hard-edged decals use "[[Transparency map#Alpha_Test|alpha test]]" because this is usually cheaper to render. If the decals must be softer (tire tracks in a racing game) then use [[Transparency map#Alpha_Blend|alpha blend]] instead. See also [[MultiTexture]]. | |
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| − | + | = Examples = | |
| − | + | [[Image:decals_crytek.png]] <BR> | |
| + | [http://freesdk.crydev.net/display/SDKDOC3/Using+Decals+for+Destroyed+Structures Using Decals for Destroyed Structures] - from the [http://freesdk.crydev.net/display/SDKDOC3/Home CryENGINE Art Asset Creation Guide] - Using alpha blended decals for broken concrete edges. | ||
| − | + | [[Image:decals_nyhlen.png]] <BR> | |
| − | + | [http://www.polycount.com/forum/showthread.php?t=100867 Broken concrete for CE3 (Tutorial)] - by [http://vnyhlen.se/ Valdemar 'sltrOlsson' Nyhlén] - Video tutorials using Zbrush and Maya to generate tiled maps for broken concrete edges. | |
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| + | [[Image:decals_schreibt.png]] <BR> | ||
| + | [http://simonschreibt.de/gat/fallout-3-edges/ Fallout 3 – Edges] from Simon Schreibt - Investigating decal usage in Fallout 3. | ||
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[[Category:TextureTechnique]] | [[Category:TextureTechnique]] | ||
Revision as of 02:57, 25 November 2014
A texture with transparency on a floating polygon, so that it appears to be painted directly on the underlying mesh. When placing decals, care must be taken to avoid Z-Fighting. Decals are commonly used for effects such as bullet marks, graffiti, broken edges, and tire tracks.
For hard-edged decals use "alpha test" because this is usually cheaper to render. If the decals must be softer (tire tracks in a racing game) then use alpha blend instead. See also MultiTexture.
Examples
Using Decals for Destroyed Structures - from the CryENGINE Art Asset Creation Guide - Using alpha blended decals for broken concrete edges.
Broken concrete for CE3 (Tutorial) - by Valdemar 'sltrOlsson' Nyhlén - Video tutorials using Zbrush and Maya to generate tiled maps for broken concrete edges.
Fallout 3 – Edges from Simon Schreibt - Investigating decal usage in Fallout 3.
