Crash on the simulator when loading some 3D models in DAE format.

[cancanw]

for (XmlNode controller : controllersNode.getChildren("controller")) {
This line of code has a null pointer。

---

java.lang.NullPointerException: Attempt to invoke virtual method 'java.util.List xxx.util.xml.XmlNode.getChildren(java.lang.String)' on a null object reference
at com.yiside.quote.dae.model3D.services.collada.loader.SkinLoader.extractSkinData(SkinLoader.java:28)
at com.yiside.quote.dae.model3D.services.collada.loader.ColladaLoader.loadColladaModel(ColladaLoader.java:213)
at com.yiside.quote.dae.model3D.services.collada.loader.ColladaLoader.buildAnimatedModel(ColladaLoader.java:55)
at com.yiside.quote.dae.model3D.services.collada.loader.ColladaLoader.access$000(ColladaLoader.java:43)
at com.yiside.quote.dae.model3D.services.collada.loader.ColladaLoader$ColladaLoaderTask.build(ColladaLoader.java:186)
at com.yiside.quote.dae.model3D.controller.LoaderTask.doInBackground(LoaderTask.java:87)
at com.yiside.quote.dae.model3D.controller.LoaderTask.doInBackground(LoaderTask.java:19)

[jiulincheng]

I got a same issues

[andresoviedo]

Hi @cancanw @jiulincheng thanks for your feedback.
I can try to analyze what is the missing information.
Please, if it's possible share your model so it's easier to find the error.
Regards

[ruanbaojun1105]

I got a same issues.

thanks~

test.zip

@andresoviedo

[andresoviedo]

Hello guys.

I'm working on this issue with the test example you provided. I confirm there are 2 major issues

1 - this dae model in particular has a visual scene with 693 nodes.

that's a very large uniform array to fit on all GPU.
to fix this we may need to upgrade to OpenGL ES 3.1 to support large joint structures
i fixed it augmenting the vertex shader buffer size from 60 to 700 but that won't work for everyone.
https://stackoverflow.com/questions/20647207/glsl-replace-large-uniform-int-array-with-buffer-or-texture

2 - the app does not position multiple mesh objects them on the space correctly:
I am working on it... :SS

Kind regards