returning to an old thread, as i finally found the solution (+problem)
white alpha artifacts is a common problem for 3D render engines, it
relates to mip-mapping AKA rescaling of the image to lower resolution
for faster preview, and since photoshop CS5 does not support proper PNG
export with alpha channels any more - only transparency (not the same
thing) - the transparent pixels around the edge are treated as 100%
white. when resized, some of this white gets blended in to the mix,
resulting in those nasty grey artifact. see this post in the unity
forum:
http://answers.unity3d.com/questions/2827/messy-alpha-problem-white-around-edges
why adobe does not support PNG any more is beyond me. apparently they
did once.
so my workaround right now is saving files as BMP (yes, photoshop
supports alpha channels in BMPs) and then using the PC software
pixelformer to convert the files to PNG.
any tips on OS X image software that saves proper PNG with transparency
is much appreciated!
best,
jacob
On 11/1/10 11:28 , Thea Sikker Remin wrote:
thanks very much for your help. the borders are still there at lower
res, but when i save the photoshop file as PNG8 in stead of PNG24, the
problem is solved :)
best, thea
On Sun, Oct 31, 2010 at 11:36 AM, Michael Forrest
<[email protected] <mailto:[email protected]>> wrote:
I'd try fiddling with the Transparency or Matte setting when you
export the PNG to start with - it seems like it's not getting a
high enough bit depth on the alpha channel.
Alternatively it might be a problem with your image dimensions -
do you still get the same problem at a lower resolution? Can you
try making a PNG that is 1024x1024 and see if you have any
problems with that? (Internally everything gets converted to
squares so there might be some problem with the conversion process
that takes place on import)
On Sun, Oct 31, 2010 at 10:19 AM, Thea Sikker Remin
<[email protected] <mailto:[email protected]>> wrote:
here is a screenshot. this image is 1008x2058 pixels. but i
have this problem with all my files.
thanks very much, thea
On Sun, Oct 31, 2010 at 10:46 AM, Michael Forrest
<[email protected] <mailto:[email protected]>>
wrote:
Strange. Can you post a screenshot? What are the
dimensions of your images?
On 31 Oct 2010, at 09:23, Thea Sikker Remin
<[email protected] <mailto:[email protected]>> wrote:
> dear animata users,
>
> i am having a great time animating, but i have a problem
with white borders on the PNG files, when i import them
into animata. there aren't any when i view the files in
photoshop.
> what can i do?
>
> best, thea
> _______________________________________________
> animata-users mailing list
> [email protected]
<mailto:[email protected]>
>
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
_______________________________________________
animata-users mailing list
[email protected]
<mailto:[email protected]>
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
_______________________________________________
animata-users mailing list
[email protected]
<mailto:[email protected]>
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
_______________________________________________
animata-users mailing list
[email protected]
<mailto:[email protected]>
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
_______________________________________________
animata-users mailing list
[email protected]
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
--
bleep:
http://8bitklubben.dk/project/CFO/
http://mikrogalleriet.net/
http://bleepstreet.com/
http://campingsex.org/
http://rimbaud.dk/
http://myspace.com/blissfullymediocre/
_______________________________________________
animata-users mailing list
[email protected]
http://lists.kitchenbudapest.hu/cgi-bin/mailman/listinfo/animata-users
