Difference between revisions of "PaintingAcrossSeams"

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When a 2D texture is applied to a 3D model, the [[TextureCoordinates]] often need to be split into multiple chunks to minimize distortion. These splits often cause seams in the texture, which need to be removed by an artist.
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<!-- ## page was renamed from Painting Across Seams -->
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= Painting Across Seams =
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There are four common workflows for solving texture seams:
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There are some common workflows for solving texture seams. It is often easier if the seams can be painted non-destructively, on a separate layer with transparency.
  
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# Paint & save in your 2D painting app (Photoshop, GiMP, etc.), reload texture in your 3D app (3ds Max, Maya, etc.) to examine, repeat until seams are solved.
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# Use a 3D paint tool or plugin inside your 3D app to paint directly across the seams:
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== 2D Paint ==
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#* 3ds max:  
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# Paint & save in your 2D painting app (Photoshop, GiMP, etc.).
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#** [http://docs.autodesk.com/3DSMAX/13/ENU/Autodesk%203ds%20Max%202011%20Help/files/WS1a9193826455f5ff-6672057a11ce3b1f807-74cb.htm Viewport Canvas] for Max 2010 and 2011. Layers are only supported in the Max 2011 version.  
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# Reload the texture in your 3D app (3ds Max, Maya, etc.) to examine.
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#** [http://renderhjs.net/textools/ TexTools] is a free set of tools. Camera Map allows projection painting in conjunction with your 2D painting app, via the Windows clipboard. Does not isolate the painted details on a transparent layer.
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# Repeat until seams are solved.
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#** [http://www.polyboost.com/ PolyBoost] was the genesis of Viewport Canvas. It works in older versions of Max, but is not free. Does not isolate the painted details on a transparent layer.
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#** [http://www.texpaint3d.de/tutorialtexpaint3d.html TexPaint3D] is a free painting plugin, but does not isolate the painted details on a transparent layer.
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# Maya [http://download.autodesk.com/us/maya/2011help/files/Paint_Effects_and_3D_Paint_Tool_overview_What_is_Painting_in_Maya_.htm has various painting methods].
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== Integrated 3D Paint ==
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# Use a dedicated 3D painting program  to paint directly across the seams:
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Use a 3D paint tool or plugin inside your main 3D software to paint directly on the model.
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#* ZBrush
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#* Mudbox
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* [http://polycount.com/discussion/174473/mari-vs-quixel Mari Vs. Quixel ?] Polycount Forum thread has 3d paint comparisons and workflows from multiple artists.
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#* Body Paint 3D
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#* [http://boards.polycount.net/showthread.php?t=56709 Photoshop CS4]
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* 3D Coat
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#* [http://wiki.blender.org/index.php/Dev:Ref/Competitor_Analysis/Texturing etc.]
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** [http://3d-coat.com The Paint Room].
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# Use your 3D app's texture-baking tool and multiple UV channels:
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#* Apply a 2nd UV layout that is setup to be seamless where the original seam was.
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* 3ds Max
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#* Bake it out to a new texture.  
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** [http://help.autodesk.com/view/3DSMAX/2016/ENU/?guid=GUID-F5518487-A253-44F0-A8D9-9CB537A8F392 3ds Max 2016 Help - Viewport Canvas]. See the tutorial [http://www.shawnolson.net/a/1810/creating_a_tileable_texture_from_a_photo.html Creating a Tileable Texture from a Photo] by [http://www.shawnolson.net/u/1/shawn_olson.html Shawn Olson].
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#* Fix the seam in your 2D painting app.
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** [http://renderhjs.net/textools/ TexTools] is a free set of tools. Camera Map allows projection painting in conjunction with your 2D painting app, via the Windows clipboard. Does not isolate the painted details on a transparent layer.
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#* Apply the new map in your 3D app, and bake it back into the original UV layout.  
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** [http://www.texpaint3d.de/tutorialtexpaint3d.html TexPaint3D] is a free painting plugin. 3ds Max 2010 only. Does not isolate the painted details on a transparent layer.
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#* [http://www.gamasutra.com/features/20061019/kojesta_01.shtml 3ds Max Tutorial] for this process - by ''[http://www.peterkojesta.com Peter Kojesta]''
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* Blender
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** [http://wiki.blender.org/index.php/Doc:2.4/Manual/Textures/Painting Texture Paint].
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* Maya
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** [http://help.autodesk.com/view/MAYAUL/2015/ENU/?guid=Paint_Effects_and_3D_Paint_Tool_overview Maya 2015 Help - Paint Effects and 3D Paint Tool Overview].
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* Photoshop
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** [https://helpx.adobe.com/photoshop/using/3d-painting-photoshop.html Photoshop Help / 3D painting].
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**[http://quixel.se Quixel 3DO] is a 3d paint app running inside of Photoshop.
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**[http://quixel.se Quixel NDO] is a normal map painting app running inside of Photoshop.
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* Zbrush
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** [http://docs.pixologic.com/user-guide/3d-modeling/painting-your-model/polypaint/ Polypaint] uses vertex color to paint details on the model. This can be converted into a texture using [http://docs.pixologic.com/reference-guide/tool/polymesh/texture-map/ Texture Map], or the model can be exported to a [[Texture Baking|texture baker]] like Xnormal.
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== Dedicated 3D Paint ==
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You can use a [[Tools#3D Paint Software|dedicated 3D painting program]] to paint directly across seams.
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* Blacksmith3D Paint
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* BodyPaint 3D
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* CrackArt
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* Mari
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* P-XCEL
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* Substance Painter
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== Multiple UV Channels ==
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Fix seams by using two UV channels and baking textures:
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# Create a UV layout and texture for your model.
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# Create a 2nd UV layout which moves the UV splits away from the existing seams.
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# Use a [[Texture Baking|baking tool]] to render the existing texture into the new UV layout.  
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# Use a 2D painting tool to fix the seams.
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# Apply the fixed texture to your model, and bake it back into the original UV layout.  
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# [http://www.gamasutra.com/features/20061019/kojesta_01.shtml 3ds Max Tutorial] for this process - by ''[http://www.peterkojesta.com Peter Kojesta]''
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== More Information ==
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* [[:Category:TextureTechnique]] - Texturing techniques commonly used in game development.
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* [[Concept Fundamentals]] - The basics of concept drawing and painting.
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* [[TexturingTutorials]] - Tutorials for creating game textures.
  
 
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[[Category:Texturing]]  [[Category:TextureTechnique]]
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[[Category:TextureTechnique]]

Latest revision as of 10:12, 7 August 2016

When a 2D texture is applied to a 3D model, the TextureCoordinates often need to be split into multiple chunks to minimize distortion. These splits often cause seams in the texture, which need to be removed by an artist.

There are some common workflows for solving texture seams. It is often easier if the seams can be painted non-destructively, on a separate layer with transparency.


2D Paint

  1. Paint & save in your 2D painting app (Photoshop, GiMP, etc.).
  2. Reload the texture in your 3D app (3ds Max, Maya, etc.) to examine.
  3. Repeat until seams are solved.


Integrated 3D Paint

Use a 3D paint tool or plugin inside your main 3D software to paint directly on the model.

  • Mari Vs. Quixel ? Polycount Forum thread has 3d paint comparisons and workflows from multiple artists.


  • Zbrush
    • Polypaint uses vertex color to paint details on the model. This can be converted into a texture using Texture Map, or the model can be exported to a texture baker like Xnormal.

Dedicated 3D Paint

You can use a dedicated 3D painting program to paint directly across seams.

  • Blacksmith3D Paint
  • BodyPaint 3D
  • CrackArt
  • Mari
  • P-XCEL
  • Substance Painter


Multiple UV Channels

Fix seams by using two UV channels and baking textures:

  1. Create a UV layout and texture for your model.
  2. Create a 2nd UV layout which moves the UV splits away from the existing seams.
  3. Use a baking tool to render the existing texture into the new UV layout.
  4. Use a 2D painting tool to fix the seams.
  5. Apply the fixed texture to your model, and bake it back into the original UV layout.
  6. 3ds Max Tutorial for this process - by Peter Kojesta


More Information

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