Hi Gene,
thanks for looking into this, that´s exactly what I´m getting
with the physical sky environment shader, a semitransparent
result in the RGB channels when opening a 16bit *.tif in Photoshop CS2.
As you did, adding a full black layer underneath will result in
the image as you´d get it when output through XSI in another
format, like 8bit *.pic.
I´m not sure if this is a *.tif 16bit problem, in the way
the channels are interpreted on Photoshop CS2 import and
also why the physical sky environment would be interpreted
(or stored?) semitransparent in the first place by mR?
Cheers
tim
Gene Crucean wrote:
I'm a little confused by how you worded this Tim. Does this file demonstrate
your problem? http://www.genecrucean.com/misc/TimL.rar
Look at the background in the channels with the background layer visible,
then toggle off the background layer then look at them again.
-Gene
On Fri, May 2, 2008 at 4:42 AM, Tim Leydecker <baueroink(at)gmx.de> wrote:
XSI 6.5 32bit, XP64.
Hi guys,
using a mR physical sky as the environment,
when I output to RGBA *.tif 16bit and open
the file in Photoshop, the alpha channel is
missing and I get semitransparent RGB channels
in the regions the environment shows through.
Now this seems like two problems, one with the
*.tif 16bit RGBA interpreted wrong by Photoshop
(like the initial Photoshop 7 bug with *.tga)
but also with mR_settings the environment should
either have a solid white or black Alpha, right?
(I´d prefer a toggle, so one can comp as desired).
Anyone can repro this or provide a workaround?
I can add a solid black layer beneath my RGB/color
in Photoshop to get solid color channel but still
don´t know wether I might simply have set something
wrong within XSI, like clipping or premult settings?
Cheers
tim
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