Collada exporter texcoord-source name error when exporting mesh with multiple uv-maps #37753

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Mo · 2013-12-09T14:34:32+01:00

Mo commented

2013-12-09 14:34:32 +01:00

System Information
Operating system and graphics card

Linux 3.8.1 32bit

Blender Version

Broken:

Blender 2.69.0 r60991
Blender 2.68a r58536

Short description of error

when exporting a mesh with multiple uv-maps while the option "only active UV-Layer" is selected, the exporter generates wrong texcoord-source names
if the active uv-map is not the first one.

Exact steps for others to reproduce the error

For example when exporting the default cube from a new scene:

create 2 uv-map-slots in the object-data panel
uv unwrap it twice to the diffrent slots
set the second uv-map to be active/selected
now export it as collada with the following options activated:
- selection only
- only active uv-layer
- include uv layers
- include material textures

In the resulting .dae file, there will be the following mesh in xml:

with a UV-Map source:

...

the source id is "Cube - Mesh-map-0" even though the second uv-map was selected to be active.

but in the geometry's - polylist, the input element will refer to a source-element with id "Cube-mesh-map-1", which isn't exported because we used
the "only active uv-layer" - option when exporting.

``` ``` ...

because of this, importing the refered uv-map will fail.

Based on a (as simple as possible) attached .blend file with minimum amount of steps
cube_2_uv.blend

**System Information** Operating system and graphics card Linux 3.8.1 32bit **Blender Version** Broken: - Blender 2.69.0 r60991 - Blender 2.68a r58536 **Short description of error** when exporting a mesh with multiple uv-maps while the option "only active UV-Layer" is selected, the exporter generates wrong texcoord-source names if the active uv-map is not the first one. **Exact steps for others to reproduce the error** For example when exporting the default cube from a new scene: - create 2 uv-map-slots in the object-data panel - uv unwrap it twice to the diffrent slots - set the second uv-map to be active/selected - now export it as collada with the following options activated: - selection only - only active uv-layer - include uv layers - include material textures In the resulting .dae file, there will be the following mesh in xml: <geometry id="Cube-mesh" name="Cube"> with a UV-Map source: <source id="Cube-mesh-map-0"> ... </source> the source id is "**Cube - Mesh-map-0**" even though the second uv-map was selected to be active. but in the geometry's - polylist, the input element will refer to a source-element with id "**Cube-mesh-map-1**", which isn't exported because we used the "only active uv-layer" - option when exporting. <polylist material="Material-material" count="12"> ``` <input semantic="VERTEX" source="#Cube-mesh-vertices" offset="0"/> <input semantic="NORMAL" source="#Cube-mesh-normals" offset="1"/> <input semantic="TEXCOORD" source="#Cube-mesh-map-1" offset="2" set="1"/> ``` ... </polylist> because of this, importing the refered uv-map will fail. Based on a (as simple as possible) attached .blend file with minimum amount of steps [cube_2_uv.blend](https://archive.blender.org/developer/F37863/cube_2_uv.blend)

Mo commented

2013-12-09 14:34:32 +01:00

Changed status to: 'Open'