Hi,
Much how photoshop alpha transparency works. Thanks.
C
On Sunday, November 28, 2004, at 04:16 AM, Patrick H. Lauke wrote:
Chris Kennon wrote:
This is exactly what I had in mind, thanks. to clarify my
understanding an 8-bit png doesn't have an alpha channel, so
transparency is derived the same as gif, from a solid color. However,
the 24-bit png has an alpha channel specifying transparency?
Both PNG 8 and PNG 24 have alpha transparency channels available.
However, in PNG 8 it's an additional 1 bit channel (so pixels are
either fully opaque, or fully transparent), while in PNG 24 it's a
full 8 bit channel (allowing up to 256 levels of transparency -
effectively, you now have a 32 bit image: a byte for R,G,B and A).
At least that's how I undestand it...
--
Patrick H. Lauke
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