Trying to recreate warehouse lamps with IES textures

[joseph]

Check this out:

How to make an IES area light in blender

I don’t know if anyone has posted a similar tip before. Recently I was trying to use blender to do lighting design for my new home and found that all the documentation and tutorials say that IES Texture node can only be used for point light or spot light. but as far as I know from cycles, there should be no difference between IES Texture used for point light and area light. So I opened the source code of Blender and found that IES Texture node will use the Normal vector to calculate the luminous…