Transparent mirror

Support Materials and Textures
#1

Hi,
What materials and rendering settings would I have to use to get a transparent mirror?

What I need is a sort of glass floor that would reflect the objects placed over it (with reflection’s opacity gradually going down the further something is from the floor). Where there is no reflection I would like the floor to be completely transparent, so that an image that is being composited into the final render as a skybox of sorts is visible.

I use a plane as the floor and at this point I can only get mirroring effect when it is opaque, making it fully transparent makes the reflection transparent as well.

Can someone help?

Edit: I’m using 2.5

#2

Set the reflectivity to %100.
There is not “only reflection” button, but you can take the reflection render pass from the floor and composite it in with a render pass taken without the floor in it.

#3

Thanks for your help Asano.
Unfortunately it didn’t work. For some reason the reflection pass is always black.

#4

That is curious. Post the .blend? I’ll take a look at it tonight and see what I can come up with.

Alternately you could render your image without the floor, then render the whole image with the floor (%100 reflective) then render a 3rd image after you change the materials. Change the floor to be a white shadeless material (so it is matter white) and everything else to be a black shadeless material (matte black). Then use that 3rd render as a mask to combine the two.

#5

Hey MichalB,

I’m trying to get basically the same thing going, did you ever figure out a solution?

Thanks.

#6

I remember reading a tutorial on this some time ago, I think it was called ‘product rendering in blender’.

#7

Hey qumah,

In a search a few different results came up and none of them mention reflectivity, do you have any more specifics? Thanks for the tip, anyway.