Cannot find uv option in texture mapping in Blender 2.72 I want to add a world texture in Blender and choose its coordinate mapping to UV to create a particle system fade out effect when using an explosion modifier just as this dissolving tutorial does: https://www.youtube.com/watch?v=gD8qlNdEt6E. But when I tried to do this, I cannot find such an option (no "uv" in the option list):



Could anyone please tell me how I can do this? Appreciate for your kindly help~
This is correct, world has no vertices so it cannot have UVs.