How to bake ALPHA in CYCLES?

I can’t seem to find a way to bake the alpha map in cycles… there is no option… and the combined mode don’t use the alpha…

The only way i managed to get teh alpha was rendering it from camera, in ortographic view. But it don´t match the other baked textures… if there is no way of baking it, i guess i’ll have to render all of them…



What? alpha is a greyscale image. You can bake it however you like. What you probably want is the compositor. Use combine RGBA and put your baked alpha into the alpha channel of the texture. If that’s not going where you want, you’re going to have to be more specific what your desired result is.