Documentation should mention call order for enable_segmentation_output() #1225
Description
Describe your feature request
Today, when trying to add segmentation output to a custom script, I found that the segmentation data didn't show any of our objects (it was a single solid color when output as an image, and printing the NumPy array showed that every pixel always had the value "0").
Eventually, I discovered that this issue was occurring because I was calling bproc.renderer.enable_segmentation_output() before loading the scene. Segmentation data apparently only works correctly if enable_segmentation_output() is called after loading the scene, which I guess is why enable_segmentation_output() is always called just before rendering in the example scripts.
I don't see this limitation mentioned in the renderer tutorial or in the renderer API documentation. I would suggest clearly stating that bproc.renderer.enable_segmentation_output() must be called after the scene is loaded in both of these documentation pages.
Describe a possible solution
No response