Revision as of 03:42, 29 July 2014

Decal

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 bullet marks, graffiti, broken edges, tire tracks, etc.

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.

Decal Examples

• File:Decal$decals crytek.png <
  > Using Decals for Destroyed Structures - from the CryENGINE Art Asset Creation Guide<
  >Using alpha blended decals for broken concrete edges.<
  ><
  >
• File:Decal$decals nyhlen.png <
  > Broken concrete for CE3 (Tutorial) - by Valdemar 'sltrOlsson' Nyhlén<
  >Video tutorials using Zbrush and Maya to generate tiled maps for broken concrete edges.<
  ><
  >
• File:Decal$decals schreibt.png <
  > Fallout 3 – Edges from Simon Schreibt<
  >Investigating decal usage in Fallout 3.<
  ><
  >