OTOY Forums

hi

properbly a noob question, but i'm having some problems using a png with alpha map.

i have saved an image as png, with a transparent background and loaded it as a texture, but the transparency does not work.

do i need to use a separate file containing the alpha maps for it to work?

thanks

jorgensen

Noob away...

If you want to access the alpha of a texture, you need to use an alpha image map type rather than rgb texture or greyscale texture.

hi whalehunter

thanks for your feedback.

so i should be able to select an "alpha image", in the diffuse, and then select the png file with transparent background?

i have tried that, but it still wont work :-/

i know i can add a image in the opacity node, but hten i have to images i need to scale / move :-/

Yes you need to plug in the AlphaImage map to the opacity map. Here's the trick, go back to your diffuse texture and copy the Trasform and/or UV Projection map and Paste as an INSTANCE to your new alpha texture. It will make sure they they always stay in sync if either changes.

hi profbetis

oh man, never thought of that. thanks for the tip, you really made my day.

always nice to learn something new.

jorgensen