I need to have a grayscale (8-bit) transparent mask for an image in my app;
I read this tutorial
"How to display transparent PNG on canvas with masks"
but when I load an png image (i even tried the one that comes with tutorial) it gives me the following errore message:
"ValueError: mask must be a binary (1-bit) or grayscale (8-bit) Image"
I both tried with png and bmp but it seems that there's no way..
I'm using a 3rd edition phone (N95)
Does anyone succeded in making a grayscale mask?