Comments (5)
Any idea about this issue?
from sceneform-android-sdk.
Hi @rramprasad thank you for submitting this issue.
The lighting on the asset in your screenshot definitely doesn't look right. It looks like there are a few different issues:
- If you're concerned about shininess, this is happening because of the line
Ns 50.000000
in your .mtl file. That is requesting a material with a very high phong exponent, which in our lighting model maps to a very low roughness. Try setting the 'roughness' parameter in your.sfa
to 1.0 and rebuild. - It looks like the geometry with the icon texture isn't exported with normals. There is an issue in the 1.01 release where normal generation always makes a fully smoothed model, which is rarely what people want. This will be addressed in the next release; in the meantime you can work around by exporting explicit normals to your
.obj
file. - Note that a separate issue in 1.01 is the view does not consistently update when a new
.sfb
is computed; closing the asset in android studio and re-opening should work.
from sceneform-android-sdk.
@AdrianAtGoogle,please see comments below,
If you're concerned about shininess, this is happening because of the line
Ns 50.000000 in your .mtl file. That is requesting a material with a very high phong exponent, which in our lighting model maps to a very low roughness. Try setting the 'roughness' parameter in your .sfa to 1.0 and rebuild.
Yes,Already my .sfa roughness parameter is 1.0. So the output is same as above screenshot.
It looks like the geometry with the icon texture isn't exported with normals. There is an issue in the 1.01 release where normal generation always makes a fully smoothed model, which is rarely what people want. This will be addressed in the next release; in the meantime you can work around by exporting explicit normals to your .obj file.
I think already by .obj contains normals. I have attached my .obj file(renamed .obj to .txt). Is it anything issue in this .obj file?
icon_03.txt
from sceneform-android-sdk.
Hi @rramprasad,
You're correct that the model already has normals - in fact it seems that is the problem.
I saved your linked text file as an .obj
, made the .mtl
and the .jpg
from the contents of the OP, and imported the model into blender 2.79 - the result has the same issues present in the sceneform asset.
Here is a screenshot:
The normals in the asset do not seem to be correct; many of them are inward facing (causing the lighting seams across triangles). The normal issues need to be fixed in the source asset
from sceneform-android-sdk.
Sounds like this resolved - please reopen if not. Thanks!!
from sceneform-android-sdk.
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from sceneform-android-sdk.