ned help alpha rendering

Support Compositing and Post Processing
1

iw as wondering if you can render so the colour of the world is set as alpha then you could render in tiff’s and have an alpah channel the purpose is so i can render it then plant something inbetween two objects by post processing. or would it be easier jsut to ave the thing i will put in as a animated texture.

Example so render a board then render water over the top but render it seperatly and the waters alpha will show up in the tiff so i can put something between the two and it will show up through the water?

Thanks

Reaper

2

To render an alpha image, you have to set it to premul and RBGA in the render buttons window.

Any one can correct me if I am wrong.

3

How do i set the world colour to alpha though?

Reaper

4

As microman pointed out, setting the Premul or Key buttons in the render window automatically removes the World (‘Sky’) color and replaces it with alpha. Make sure you save to a format that supports alpha channels, like Targa.

5

ahh thank you a lot this has helped me loads :stuck_out_tongue: thanks guys you come up with th answers once again :smiley:

Reaper