Decal - Revision history

EricChadwick: depth offset, gbuffer

2015-10-02T00:22:19Z

depth offset, gbuffer

Obscura: /* Tutorials */

2015-08-04T05:39:25Z

‎Tutorials

Obscura: /* Tutorials */

2015-08-04T05:21:52Z

‎Tutorials

Obscura: /* Tutorials */

2015-08-04T05:17:09Z

‎Tutorials

Obscura: /* Tutorials */

2015-08-04T05:16:03Z

‎Tutorials

Obscura: /* Tutorials */

2015-08-04T05:04:29Z

‎Tutorials

EricChadwick: More info, blob shadow example.

2015-02-25T22:43:12Z

More info, blob shadow example.

Cman2k at 06:57, 25 November 2014

2014-11-25T06:57:32Z

Caustic at 14:37, 10 October 2014

2014-10-10T14:37:22Z

Throttlekitty at 17:40, 14 August 2014

2014-08-14T17:40:20Z

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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.
+A texture with [[Opacity map|transparency]] on a floating polygon, so that it appears to be painted directly on the underlying mesh. Decals are commonly used for effects such as bullet marks, graffiti, broken edges, and tire tracks.
-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]].
+When placing decals, care must be taken to avoid [[Z-Fighting]]. However if you use a shader with depth offset this completely avoids Z-fighting.
 Another common use is for blob shadows, which are soft dark circles under a model. Blob shadows are usually faster to render than using shadow-casting lights, and can replicate the look of soft shadowing.

@@ Line 20: / Line 20: @@
 [[Image:door_decals_img.jpg]] <BR>
-[http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for creating decals in "Star Citizen style".
+[http://www.polycount.com/forum/showthread.php?t=155894 Decal technique from Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for creating decals in "Star Citizen style", and using them in Unreal Engine.
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 [[Category:TextureTechnique]]

@@ Line 20: / Line 20: @@
 [[Image:door_decals_img.jpg]] <BR>
-[http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for decals in "Star Citizen style".
+[http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for creating decals in "Star Citizen style".
 ----
 [[Category:TextureTechnique]]

@@ Line 20: / Line 20: @@
 [[Image:door_decals_img.jpg]] <BR>
-[http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for decals, as they are used in the game.
+[http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for decals in "Star Citizen style".
 ----
 [[Category:TextureTechnique]]

@@ Line 19: / Line 19: @@
 [http://simonschreibt.de/gat/fallout-3-edges/ Fallout 3 – Edges] from Simon Schreibt - Investigating decal usage in Fallout 3.
 [http://www.polycount.com/forum/showthread.php?t=155894 Decals in Star Citizen] - By [http://www.polycount.com/forum/member.php?u=40578 Kristóf 'Obscura' Lovas] - Text based tutorial for decals, as they are used in the game.
 ----
 [[Category:TextureTechnique]]

@@ Line 3: / Line 3: @@
 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]].
-= Examples =
+[[image:blob_shadows.jpg|frame|left|Blob shadow example. Image by [http://ericchadwick.com Eric Chadwick].]]<br clear="all"/>
 [[Image:decals_crytek.png]] <BR>

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-__NOTOC__
+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.
-= Decal =
 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 bullet marks, graffiti, broken edges, tire tracks, etc.
+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]].
-See also [[MultiTexture]].
+= Examples =
-== Decal Examples ==
+[[Image:decals_crytek.png]] <BR>
-* [[Image:Decal$decals_crytek.png]] <<BR>> [http://freesdk.crydev.net/display/SDKDOC3/Using+Decals+for+Destroyed+Structures Using Decals for Destroyed Structures] - from the [http://freesdk.crydev.net/display/SDKDOC3/Home CryENGINE Art Asset Creation Guide]<<BR>>Using alpha blended decals for broken concrete edges.<<BR>><<BR>>
+[[Image:decals_nyhlen.png]] <BR>
-* [[Image:Decal$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]<<BR>>Video tutorials using Zbrush and Maya to generate tiled maps for broken concrete edges.<<BR>><<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.
-* [[Image:Decal$decals_schreibt.png]] <<BR>> [http://simonschreibt.de/gat/fallout-3-edges/ Fallout 3 – Edges] from Simon Schreibt<<BR>>Investigating decal usage in Fallout 3.<<BR>><<BR>>
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 [[Category:TextureTechnique]]