background image

[remon_v]

when I apply for example a HDRI image I can see it in the framebuffer.... but I can't see it after saving... I also get an alpha image. What's the use for it?

[thomthom]

Re: background image

When you save in .png format the alpha channel is merged into the image, so everything that's background becomes transparent. The Alpha image is for use in post processing.

If you go to Options->VFB Channels and remove the Alpha channel you can save in .png format without the background turning transparent. The Alpha image is also not created.

[jrharvey]

Re: background image

As the other guy said, its used for post processing such as photoshop when you want to add your own background and such. Its very helpful so that you dont have to spend alot of time cropping out a background. You can do what thomthom said about getting rid of the alpha or you could simply save the image file as a file type that does not support alphas such as jpg or bmp. If I remember right there is a way to get that background back once the image has already been saved but I dont remember how. Its a photoshop thing. If you dont have photoshop check out GIMP. Its free and very powerful.

[remon_v]

Re: background image

thnx for the reply... I can't find alpha channel in VFB channels.... there's nothing loaded so I can't unload anything. But I'll just save it as JPG or BMP

[dalomar_cg]

Re: background image

If you can't see the alpha channel, then you probably have an older version. In previous versions the Color and Alpha channel were required and therefore weren't on the list.