How do i generate 3d textures?

Is there an easy way to render a part of an scene into an 3d texture?

Thanks for your answers in advance!

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I haven't tried but I would believe that you can do it like this

generate a 3d texture like a normal texture though using this call instead:


Then you can copy to it from the screen like this:

where plane indicates the z plane to copy to. As it's a 256x256x256 texture you can specify 0..255