Hello, I'm having an issue I didn't expect to have.
HtoA 6.0.2.0
Arnold 7.0.0.1
Houdini 19.0.383
I have cached a cube to alembic. If I use an 'instance' object node to instance the cube onto some points and give each point a unique integer value I can then use it to create a random colour in the shader which I have applied. They all share one shader.
(fast point instance of single alembic)
However, if I do the same thing in SOPs with copy-to-points, I copy the alembic primitive and give the primitives the same integer attribute to be used in the shader and I give the 'ar_make_instance' attribute to instance them, the integer attribute no longer works per instance.
(copy-to-points alembic with make_instance)
If I turn off 'make_instance' this works as expected, but I lose the efficiencies of instancing. Furthermore, if I inspect the .ass file, I see "myInteger" declared with the unique values.
(copy-to-points alembic with make_instance - ass archive)
Firstly is there a way to instance alembics using copy-to-points while retaining the ability to apply per-instance attributes for shader variation?
I can still apply different shaders to the 'make_instance' primitives, but just not attributes?
(copy-to-points alembic with make_instance - per primitive material)
Could this be a bug?
Many Thanks,
Adam
