6be4742653
for shading if their 'visibility factor' is below 0.001. This gives no perceptible visual difference in my tests, but can significantly speed up shading when using lots of omni lights with quad falloff over a large area. Since quad lamps never actually fall off to 0, previously every lamp would be considered for shading each pixel, even if such lamps had a tiny falloff distance, and were miles away.