# Texture mapping

**URL:** <https://discourse.mcneel.com/t/texture-mapping/122500>\
**Category:** Rendering\
**Tags:** windows\
**Created:** [April 16, 2021, 10:12am UTC](https://discourse.mcneel.com/t/texture-mapping/122500 "2021-04-16T10:12:09Z")\
**Posts on this page:** 16\
**Page:** 1

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**Author:** ![karakusc](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/karakusc/32/240020_2.png) [@karakusc](https://discourse.mcneel.com/u/karakusc)\
**Post date:** [April 16, 2021, 10:12am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/1 "2021-04-16T10:12:09Z")

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Hello, i am trying to map a texture i made in photoshop and use as jpeg file on rhino 7. When i move the texture in mapping tool its resolution drops too much. I didnt have that kind of problem in rhino 6 but in rhino 7, it doesnt work or i couldnt make it work. I am attaching pictures to illustrate the problem.  
This is how it looks before clicking apply on mapping interface.

 ![beforeapply](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/b/2/5/b256ef3733fc0a72e0b1fa2d57a9bc01c0c9b749.jpeg)

This is how it looks before clicking apply on mapping interface.

 ![afterapply](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/a/3/7/a377d7a07312e7b9385abe13b9a9f707bea95015.jpeg)

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**Author:** ![Normand](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/normand/32/476050_2.png) [@Normand](https://discourse.mcneel.com/u/Normand)\
**Post date:** [April 16, 2021, 10:21am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/2 "2021-04-16T10:21:19Z")

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Hi @karakusc  
I had the exact same problem and posted about it [here](https://discourse.mcneel.com/t/uv-editor-texture-resolution/120401/2) a month ago - got no answer 😬  
Hopefully someone will chime in with a solution!  
-Jakob

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**Author:** ![karakusc](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/karakusc/32/240020_2.png) [@karakusc](https://discourse.mcneel.com/u/karakusc)\
**Post date:** [April 16, 2021, 10:24am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/3 "2021-04-16T10:24:36Z")

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Hey, i just found it by myself. After mapping, just increase the mapping channel under the metarial options. I hope it helps to you too!

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**Author:** ![Normand](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/normand/32/476050_2.png) [@Normand](https://discourse.mcneel.com/u/Normand)\
**Post date:** [April 16, 2021, 11:58am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/4 "2021-04-16T11:58:53Z")

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You are indeed right, @karakusc! I wonder if anyone knows the reason why? I was never much of a texture-wiz and have no idea if this is expected behaviour or not…  
-Jakob

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**Author:** ![Normand](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/normand/32/476050_2.png) [@Normand](https://discourse.mcneel.com/u/Normand)\
**Post date:** [April 16, 2021, 12:05pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/5 "2021-04-16T12:05:54Z")

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But… If the mapping channel on the material is set to 2, the texture doesn’t show up in Raytraced, only rendered viewmode…  
@nathanletwory - I know Cycles is your domain. Can you shed some light on what’s going on here.  
TIA, Jakob

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**Author:** ![nathanletwory](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/nathanletwory/32/482880_2.png) [@nathanletwory](https://discourse.mcneel.com/u/nathanletwory)\
**Post date:** [April 16, 2021, 12:18pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/6 "2021-04-16T12:18:16Z")

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Are you still on an older Rhino 7 version? I fixed this in Rhino 7.5:

 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/c/d/b/cdb214eb3d71df56585b5a819142771dc1a8796d.jpeg)

Diffuse texture on channel 2, transparency texture on channel 3.

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**Author:** ![karakusc](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/karakusc/32/240020_2.png) [@karakusc](https://discourse.mcneel.com/u/karakusc)\
**Post date:** [April 16, 2021, 12:21pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/7 "2021-04-16T12:21:53Z")

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i have updated my rhino yesterday but mapping still works strangely i dont know why. For now, i just save the day anyway:)

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**Author:** ![nathanletwory](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/nathanletwory/32/482880_2.png) [@nathanletwory](https://discourse.mcneel.com/u/nathanletwory)\
**Post date:** [April 16, 2021, 12:23pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/8 "2021-04-16T12:23:32Z")

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I don’t know about the uv editor in this case, @Jussi_Aaltonen can tell about that more.

Probably somehow related to usage of ATP (Advanced Texture Preview), or lack of usage of ATP. I generally don’t worry too much about it, I’ll just handle the data that’s handed to me in Raytraced (:

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**Author:** ![Normand](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/normand/32/476050_2.png) [@Normand](https://discourse.mcneel.com/u/Normand)\
**Post date:** [April 16, 2021, 12:39pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/9 "2021-04-16T12:39:11Z")

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> [@nathanletwory](#):
>
> I generally don’t worry too much about it, I’ll just handle the data that’s handed to me in Raytraced

😆 Fair enough!

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**Author:** ![Jussi\_Aaltonen](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jussi_aaltonen/32/494409_2.png) [@Jussi\_Aaltonen](https://discourse.mcneel.com/u/Jussi_Aaltonen)\
**Post date:** [April 19, 2021, 6:46am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/10 "2021-04-19T06:46:42Z")

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Sounds like a bug. Filed as [RH-63882](https://mcneel.myjetbrains.com/youtrack/issue/RH-63882) Texture mapping issue

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<div class="post-metadata">

**Author:** ![karakusc](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/karakusc/32/240020_2.png) [@karakusc](https://discourse.mcneel.com/u/karakusc)\
**Post date:** [April 19, 2021, 8:30am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/11 "2021-04-19T08:30:20Z")

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Might be, but changing the channel works for now.

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**Author:** ![Jussi\_Aaltonen](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jussi_aaltonen/32/494409_2.png) [@Jussi\_Aaltonen](https://discourse.mcneel.com/u/Jussi_Aaltonen)\
**Post date:** [June 16, 2021, 7:04am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/12 "2021-06-16T07:04:12Z")

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Hi @karakusc, sorry for a late reply.

After you click Apply on the UVEditor that object will have so called custom object mapping  
 ![image](https://global.discourse-cdn.com/mcneel/uploads/default/original/4X/6/2/0/620451ab7b848b86a1069902307d726ab8920de4.png)

Surface, polysurface and SubD objects that have custom object mapping use _Advanced texture preview_ in order to preview the mapping correctly. _Advanced texture preview_ uses texture baking which in many cases lowers the texture resolution seen on the object.

If your object has only one mapping channel and you define a texture to use channel other than 1 then the result will be undefined and depends on the display mode or renderer. In this case it appears that _Advanced texture preview_ gets disabled for that object because the mapping channel 2 assigned for the texture does not exist. I encourage to avoid that trick because it may break your model in any future Rhino update.

I suggest you try one of these:

1. Apply your texture using cylindrical mapping
2. Add your ornament to the object using a cylindrically projected decal
3. If neither of the above work turn _Advanced texture preview_ off temporarily from the display mode settings. Remember to turn it back on or you may experience other more severe texturing issues with other models.

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<div class="post-metadata">

**Author:** ![Jussi\_Aaltonen](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jussi_aaltonen/32/494409_2.png) [@Jussi\_Aaltonen](https://discourse.mcneel.com/u/Jussi_Aaltonen)\
**Post date:** [June 16, 2021, 7:06am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/13 "2021-06-16T07:06:08Z")

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@Normand The above answer may also be of interest for you.

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<div class="post-metadata">

**Author:** ![karakusc](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/karakusc/32/240020_2.png) [@karakusc](https://discourse.mcneel.com/u/karakusc)\
**Post date:** [June 16, 2021, 2:41pm UTC](https://discourse.mcneel.com/t/texture-mapping/122500/14 "2021-06-16T14:41:55Z")

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Hello, thank you very much for responds and advices bu i couldnt understand what i am suppose to do with that one " 1. Add your ornament to the object using a cylindrically projected decal"

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<div class="post-metadata">

**Author:** ![Jussi\_Aaltonen](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jussi_aaltonen/32/494409_2.png) [@Jussi\_Aaltonen](https://discourse.mcneel.com/u/Jussi_Aaltonen)\
**Post date:** [June 17, 2021, 6:50am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/15 "2021-06-17T06:50:47Z")

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Hi, there are some tutorials available in Youtube. Here’s one that shows how to apply decal with planar mapping: [Rhino 3D Tutorial: Decal / Logo Texture Application - YouTube](https://www.youtube.com/watch?v=a1a5at9rnzw)

By “cylindrically projected” I meant the cylindrical mapping style for the decal. It is useful to add a vertical guide line in the center of the bowl to make it easier to pick the start and end of the cylinder.

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<div class="post-metadata">

**Author:** ![Jussi\_Aaltonen](https://sea3.discourse-cdn.com/mcneel/user_avatar/discourse.mcneel.com/jussi_aaltonen/32/494409_2.png) [@Jussi\_Aaltonen](https://discourse.mcneel.com/u/Jussi_Aaltonen)\
**Post date:** [May 9, 2022, 8:27am UTC](https://discourse.mcneel.com/t/texture-mapping/122500/16 "2022-05-09T08:27:39Z")

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@karakusc Hi, wanted to let you (and others too) know that texture quality in Rendered and Raytraced display mode has been improved for Unwrapped polysurfaces in [Rhino WIP](https://www.rhino3d.com/download/rhino-for-windows/wip). Please, if you have a change to test and you find issues let me!