Let's go ahead and add a bloom filter to our game so we can see how to set these guys up. The bloom filter automatically integrates with glow maps, so it's easy to use it to make halos around glowing objects.
from direct.filter.CommonFilters import CommonFilters
CommonFilters, we need to create an instance of it. Add this code right before the
render.setShaderAutocall. It doesn't really have to precede that call, but that's as good a place as any.
self.filters = CommonFilters(base.win, base.cam)