Hello!

I have two images (for example both with alpha channel) and i need to create one image from them. The problem is that i tried some functions as ColorMul() and ColorAdd() (i tried to merge images by pixels) but all these functions do not make the same effect as two layers in simple image editor (PS, gimp etc) and colors are VERY far from what i need.

Is there any way to merge two images with alpha?

okay i figured it out, just another function that's not included in EE

My guess would be that you multiply the colors by their alpha % then add them together. What was the solution you came up with?

(06-20-2013 02:07 PM)Rubeus Wrote:  My guess would be that you multiply the colors by their alpha % then add them together. What was the solution you came up with?

Nope
From Wiki:

where
BackColor — initial pixel color,
ForeColor — color of pixel that we want to add,
Transparency — transparency of pixel that we want to add.

Actually, I was pretty darn close. Don't forget to clamp to 255, though, or you will get some very strange effects.

EE 'ColorLerp' function can be used for that.