Import dae file problem. The materials color are always white. #77212

New Issue

Daniel · 2020-05-31T01:58:09+02:00

Daniel commented

2020-05-31 01:58:09 +02:00

System Information
Operating system: Windows 10
Graphics card: MD Radeon R7 Graphics

Blender Version
2.82 sub 7

When I imported objetcs from dae files, all materials are white.

I select the file > Import > Collada
Select the dae file
All materials color are white

When I import the same dae file in unity it works fine.

Regards
Daniel

**System Information** Operating system: Windows 10 Graphics card: MD Radeon R7 Graphics **Blender Version** 2.82 sub 7 When I imported objetcs from dae files, all materials are white. 1. I select the file > Import > Collada 2. Select the dae file 3. All materials color are white When I import the same dae file in unity it works fine. Regards Daniel

Daniel commented

2020-05-31 01:58:09 +02:00

Added subscriber: @dandal71

ChristopherAnderssarian commented

2020-05-31 10:53:05 +02:00

Added subscriber: @ChristopherAnderssarian

ChristopherAnderssarian commented

2020-05-31 10:53:05 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

ChristopherAnderssarian commented

2020-05-31 10:53:05 +02:00

Do you have a small file you can upload for testing?

Daniel commented

2020-05-31 16:59:55 +02:00

Hi Christopher

Thanks for you time. Yes, I have several files. I have upladed the files. I am newbie in Blender, maybe I am doing something wrong.

Regards
Daniel

Hi Christopher Thanks for you time. Yes, I have several files. I have upladed the files. I am newbie in Blender, maybe I am doing something wrong. Regards Daniel [guadana.dae](https://archive.blender.org/developer/F8567789/guadana.dae) [materialTest.dae](https://archive.blender.org/developer/F8567787/materialTest.dae) [materialTest2.dae](https://archive.blender.org/developer/F8567786/materialTest2.dae) [ladrillos.dae](https://archive.blender.org/developer/F8567785/ladrillos.dae)

ChristopherAnderssarian commented

2020-05-31 19:02:53 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

ChristopherAnderssarian commented

2020-05-31 19:02:53 +02:00

Hmm, importing in to Blender there are materials from the export there, they're just not used.

Richard Antalik commented

2020-06-04 10:50:25 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Scurest commented

2021-04-17 00:01:02 +02:00

Added subscriber: @scurest

Scurest commented

2021-04-17 00:01:02 +02:00

This happens when s share an . Eg from materialTest2.dae

<library_effects>
	<effect id ="effect_id_156-fx"/>
</library_effects>

<library_materials>
	<material id="material_id_156" name="SOLID-MEDIUM_AZURE">
		<instance_effect url="#effect_id_156-fx" />
	</material>
	<material id="material_id_156-logo" name="SOLID-MEDIUM_AZURE">
		<instance_effect url="#effect_id_156-fx" />
	</material>
</library_materials>

When the importer visits a it associates the instantiated effect with a new Blender material like this

  this->uid_effect_map[cmat->getInstantiatedEffect()] = ma;

Then later on when it visits an , it looks up the material to stuff data into from the uid_effect_map.

I'm not sure why the control is "inverted" like this, but since the uid_effect_map only stores one material per effect, only the last material to use an effect "wins" and gets handled when the is visited.

This happens when <material>s share an <effect>. Eg from materialTest2.dae ``` <library_effects> <effect id ="effect_id_156-fx"/> </library_effects> <library_materials> <material id="material_id_156" name="SOLID-MEDIUM_AZURE"> <instance_effect url="#effect_id_156-fx" /> </material> <material id="material_id_156-logo" name="SOLID-MEDIUM_AZURE"> <instance_effect url="#effect_id_156-fx" /> </material> </library_materials> ``` --- When the importer visits a <material> it associates the instantiated effect with a new Blender material like this ``` this->uid_effect_map[cmat->getInstantiatedEffect()] = ma; ``` Then later on when it visits an <effect>, it looks up the material to stuff data into from the uid_effect_map. I'm not sure why the control is "inverted" like this, but since the uid_effect_map only stores one material per effect, only the last material to use an effect "wins" and gets handled when the <effect> is visited.

Philipp Oeser removed the

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Import dae file problem. The materials color are always white. #77212