On 4/5/07, Oliver Müller <[EMAIL PROTECTED]> wrote:
Hi,
I want to change the alpha channel of an 32bit integer.
At the moment I extract every color channel, change the alpha and then
put them together at the end.
(alpha << 24) | (red << 16) | (green << 8) | blue )
How can I change the alpha channel directly ?
You could...:
color = (color & (-1 >>> 8)) | (alpha << 24);
...but I'm not sure if that would be better.
Mark
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