Baked object coordinates don't work as expected when used with image texture node #46829

New Issue

gandalf3 · 2015-11-20T22:35:16+01:00

gandalf3 commented

2015-11-20 22:35:16 +01:00

System Information
Archlinux

Blender Version
Broken: 2.76b

Short description of error

I attempted to bake the object coordinates of a group of objects to an image,
in order to still be able to texture individual objects with blended-box mapping after joining them all into one object for the purpose of getting a unique random value for the whole group.
I baked the coordinates to a full float exr to avoid clamping, however the baked coordinates don't map 2D image textures properly.
It does seem to work with procedural textures however.

When compared directly, the baked coordinates look the same as the original coordinates.

Exact steps for others to reproduce the error

Open baked_object_coordinates-original.blend and enable viewport render
Open baked_object_coordinates-baked.blend and enable viewport render

The image texture is stretched along the side of the object in the second .blend.
It seems to work fine with a procedural texture (the second .blend looks just like the first).

**System Information** Archlinux **Blender Version** Broken: 2.76b **Short description of error** I attempted to bake the object coordinates of a group of objects to an image, in order to still be able to texture individual objects with blended-box mapping after joining them all into one object for the purpose of getting a unique random value for the whole group. I baked the coordinates to a full float exr to avoid clamping, however the baked coordinates don't map 2D image textures properly. It does seem to work with procedural textures however. When compared directly, the baked coordinates *look* the same as the original coordinates. **Exact steps for others to reproduce the error** 1. Open [baked_object_coordinates-original.blend](https://archive.blender.org/developer/F256448/baked_object_coordinates-original.blend) and enable viewport render 2. Open [baked_object_coordinates-baked.blend](https://archive.blender.org/developer/F256449/baked_object_coordinates-baked.blend) and enable viewport render The image texture is stretched along the side of the object in the second .blend. It seems to work fine with a procedural texture (the second .blend looks just like the first).

gandalf3 commented

2015-11-20 22:35:16 +01:00

Changed status to: 'Open'

gandalf3 commented

2015-11-20 22:35:16 +01:00

Added subscriber: @gandalf3

Brecht Van Lommel commented

2015-11-21 18:41:06 +01:00

Closed as duplicate of #44014

Brecht Van Lommel closed this issue

2015-11-21 18:41:06 +01:00

Brecht Van Lommel commented

2015-11-21 18:43:02 +01:00

Added subscriber: @brecht

Brecht Van Lommel commented

2015-11-21 18:43:02 +01:00

This doesn't work the same reason rotation doesn't work, besides the texture coordinates the image texture nodes also uses the object normal, which you can't specify manually right now.

In principle it's possible to make it work with just the object coordinates, but that would require a pretty major rework of the shading nodes to support propagating texture coordinate differentials, from which the normal could then be computed.

This doesn't work the same reason rotation doesn't work, besides the texture coordinates the image texture nodes also uses the object normal, which you can't specify manually right now. In principle it's possible to make it work with just the object coordinates, but that would require a pretty major rework of the shading nodes to support propagating texture coordinate differentials, from which the normal could then be computed.

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Baked object coordinates don't work as expected when used with image texture node #46829