- From: Bob Holmes <rangsynth@gmail.com>
- Date: Mon, 6 Aug 2012 23:35:52 +0200
- To: Rik Cabanier <cabanier@gmail.com>
- Cc: Nikos Andronikos <Nikos.Andronikos@cisra.canon.com.au>
RESEND TO THE GROUP On 8/6/12, Rik Cabanier <cabanier@gmail.com> wrote: > On Mon, Aug 6, 2012 at 9:29 AM, Bob Holmes <rangsynth@gmail.com> wrote: > >> Off Topic/Transparency >> >> In Delphi, they have a concept of transparency where you can set the >> "Transparent Color" for a bitmap. If the color from the bitmap equals >> the "transparent color" then it does not show on the screen. This is >> from older methods of compositing where the composite is ignored for >> the transparent color. >> > > That's color key masking in PDF and PostScript. > > >> >> In new system with proper blending this must be a result of simply >> setting the alpha of the source to zero? >> > > No, I don't think it's possible. If you feel like SVG needs this, you > should bring it up on the mailing list. > > >> >> If you are planning on including anything about transparency and >> bitmaps that use a transparent color for whole pixels(like 24 bit >> bitmaps where everything that is fuschia color is invisible or >> equivalent to alpha of 0) in the spec then please let me know about >> that and if there might be any catches at the blending side of things. >> >
Received on Monday, 6 August 2012 21:36:14 UTC