How to create transparent BMP file for overlay
A short guide to create a usable BMP file as transparent overlay using Adobe Photoshop:
1.
Create workspace according to the size width and height of the picture for overlay.
2.
Select your imagefile with transparent background (use format
PNG
or delete the background in the
picture).
3.
Copy the layer or duplicate it.
4.
Uncheck the copied layer and select only the original layer.
5.
Select your imagefile in the original layer window holding the CTRL button.
6.
Go to the channel window and save your selection as channel.
7.
Uncheck the colors, leaving only the alpha channel selected.
8.
Go to
File > Export > Layers to files
, select
BMP
,
32 bit
and click
Run
.
9.
Photoshop will make separated files. Delete the copied layer, use the original layer.
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