Re: [Opensg-users] Collada Loader Problem (OpenSG 2.0, Win x64)

[Christoph Fünfzig]

Hi,

 

thanks a lot for looking into it.

Just a question on the side:

Is it correct Collada to have ids, which start with an underscore,

e.g., "<visual_scene id="_entity_balken01" name="_entity_balken01">" ?

Because in the combination

 "<scene>
    <instance_visual_scene url="">   </scene>"

it does not find the scene root node ..

 

Thanks,

Christoph

 

 

On 25.09.2013 11:14, Gerrit Voß wrote:

Hi,

On Mon, 2013-09-23 at 18:44 -0500, Carsten Neumann wrote:



> 	Hello Christoph,
> 
> On 09/23/2013 07:37 AM, "Christoph Fünfzig" wrote:



> > I have a crash with rendering a scene loaded as Collada (OpenSG 2.0, Win x64).
> > In OSGGeoImmediatePumpGroup.cpp:
> >     void pumpMultiAttrib(PumpClassicInfo &info,   UInt16 slot, GLenum           attrib, UInt32 vertIdx)
> > for slot==9 all indices "info.attribIndex [slot]->getValue<UInt32>(vertIdx)" are invalid.
> >
> > I used no graph-ops at all during loading: OSG::SceneFileHandler::the()->setDefaultGraphOp(NULL);
> > Please see the example scene
> > https://www.dropbox.com/s/ytyzymw07rmewqa/_entity_balken01.dae
> > to reproduce the problem!



> 
> thanks, I'm looking into it. Looks like the collada loader produces an 
> invalid geometry (default graph ops crash as well - specifically the 
> striper). More precisely the index for TexCoords1 is broken, it has a 
> bunch of leading UInt32(-1) values, before (what looks to be) correct 
> data starts. Haven't found the source of it yet.



the source of the -1 is in the dae file. Problem is the dom code returns
these arrays as domListOfUInt. One thing one has to do is check if an
index contains -1 (readTriangles does this) and than discard it. But
there is a bug, the comparison uses the wrong type UInt32, it should be 
domUint as otherwise the comparison fails on 64bit system.

If you haven't got one I can quickly generate the patch.

kind regards
  gerrit

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