the colorID function is awesome for varying geometry, but we have run into an issue with flickering between renders at the edges of surface objects.
the issue seems to be that forestPack is incorrectly interpreting colors from the ColorID texture at the edge of a uvw mapped object. in the screenshot, the plane is mapped with a standard planar uvwMap modifier and the colorID texture that is used in the forestpack system, which is working pretty accurately across the surface of the plane but at the near left edge there are red boxes where no red appears in the color texture. when this renders over a sequence of frames, this edge pops with different color correlated geometry spawning at each frame.
adjusting the uvwmapping size/scale even larger than the object doesn't resolve the issue, and it almost looks like some kind of rounding error at the very edge of the uv information. this appears to be a bug, but is there anything we might be able to do to work around it? is this a known issue?
attached is the max scene file that produced the screenshot.. any assistance is greatly appreciated.