Hi Robert,
I had a look at the code in osg::Geometry. The lines in question are:
if(handleVertexAttributes)
{
for(unsignedintindex=0;index<_vertexAttribList.size();++index)
{
constArray*array=_vertexAttribList[index].get();
if(array&&array->getBinding()==osg::Array::BIND_PER_VERTEX)
{
vas->setVertexAttribArray(state,index,array);
}
}
}
Do you remember, why the condition
getBinding() == BIND_PER_VERTEX
is there?
_But(!) _the same condition is at _normalArray, _colorArray etc. and they are
handled correct with BIND_OVERALL.
I don't understand what is really done there. Sorry.
- Werner -
Am 09.03.2021 um 21:27 schrieb Robert Osfield:
> HI Werner,
>
> I can't think of think of reason that would cause a problem. It's quite a
> while since I look at the associated code so it might be simply that I've
> forgotten constraints. Have
> a look at the osg::Geometry::drawImplementation() to see if there is a
> constraint on vertex attributes needing to be BIND_PER_VERTEX.
>
> If you were using the VSG that I'd suggest running with Vulkan debug and API
> layer as it's great for picking up errors. Are there any OpenGL errors being
> produced?
>
> Robert.
>
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