UV Map node not fully working #39808

New Issue

Gwenael Le Page · 2014-04-20T14:50:53+02:00

Gwenael Le Page commented

2014-04-20 14:50:53 +02:00

Blender 2.70, buildbot from the 20/4 regular win 64 build. Hash b4cb467

I am not sure what to think about that, it may well be me doing something wrong…

I was playing with todays buildbot build and noticed the UV Map node. Very handy to input a UV map, more logical that the "Attribute" node.

But i couldn't use the UV for displacement.
You'll find a very very crude file here:
Bug_UVMaps_input.blend

Go to rendered view, and select the "UV Map" node as input for your UV, and the displacement won't work, whereas it works with Attribute or Texture coordinates nodes.

It will work if you use the image for the color info though…

Blender 2.70, buildbot from the 20/4 regular win 64 build. Hash b4cb467 I am not sure what to think about that, it may well be me doing something wrong… I was playing with todays buildbot build and noticed the UV Map node. Very handy to input a UV map, more logical that the "Attribute" node. But i couldn't use the UV for displacement. You'll find a very very crude file here: [Bug_UVMaps_input.blend](https://archive.blender.org/developer/F85400/Bug_UVMaps_input.blend) Go to rendered view, and select the "UV Map" node as input for your UV, and the displacement won't work, whereas it works with Attribute or Texture coordinates nodes. It will work if you use the image for the color info though…

Gwenael Le Page commented

2014-04-20 14:50:53 +02:00

Changed status to: 'Open'

Gwenael Le Page commented

2014-04-20 14:50:53 +02:00

Added subscriber: @gwentiv

Kévin Dietrich commented

2014-04-20 16:15:22 +02:00

Added subscribers: @brecht, @kevindietrich

Kévin Dietrich commented

2014-04-20 16:15:22 +02:00

I did the implementation of that node, and "displacement" wasn't included, so it seems more like a feature request than a bug.

@brecht: what do you think about that ? I could do it :) (just assign this to me)

I did the implementation of that node, and "displacement" wasn't included, so it seems more like a feature request than a bug. @brecht: what do you think about that ? I could do it :) (just assign this to me)

Willi commented

2014-04-20 16:24:31 +02:00

Added subscriber: @willi-2

Willi commented

2014-04-20 16:24:31 +02:00

Confirmed. Strange indeed. If you connect the UV map node to an emission shader, the result is the same as if you connect the Vector node of the Attribute node to the emission shader. This indicates there should be no difference.
Internally, there must be something global that is not passed through as expected if the Displacement pin is used, I think.

Confirmed. Strange indeed. If you connect the UV map node to an emission shader, the result is the same as if you connect the Vector node of the Attribute node to the emission shader. This indicates there should be no difference. Internally, there must be something global that is not passed through as expected if the Displacement pin is used, I think.

Gwenael Le Page commented

2014-04-20 17:45:04 +02:00

Yes kevindietrich, I wasn't sure as well, that's why i started my post this way.

But why should it make a difference if you want to use a UV Map for a color or a displacement ?
I think it should behave just like the other nodes with UV output sockets do.

Yes kevindietrich, I wasn't sure as well, that's why i started my post this way. But why should it make a difference if you want to use a UV Map for a color or a displacement ? I think it should behave just like the other nodes with UV output sockets do.

Kévin Dietrich self-assigned this 2014-04-20 18:25:34 +02:00

Kévin Dietrich commented

2014-04-20 18:25:34 +02:00

Sorry, I downloaded your file but forgot to test it, I see what you mean now.

I didn't included the displacement because, by looking at the code (for the other nodes), it felt different than what it is actually doing and also, to me, the displacement was supposed to be no different than color info (if you know what I mean).

Anyway, guess I have no choice but fixing this. I'll try to have a patch for this ASAP.

Sorry, I downloaded your file but forgot to test it, I see what you mean now. I didn't included the displacement because, by looking at the code (for the other nodes), it felt different than what it is actually doing and also, to me, the displacement was supposed to be no different than color info (if you know what I mean). Anyway, guess I have no choice but fixing this. I'll try to have a patch for this ASAP.

Bastien Montagne commented

2014-04-20 19:36:33 +02:00

Added subscriber: @mont29