I'm betting you hit the same premultiplied alpha problem/limitation
reported in SDL_image.
http://bugzilla.libsdl.org/show_bug.cgi?id=868
The workaround/solution was to add a block of code at the end of the
loader to un-premultiply the alpha (now in the codebase).
If that is indeed the problem an
Hi Robert and Stephan,
I can see the problem using osgviewer.
The images I use are available from:
http://cvs.flightgear.org/viewvc/data/Textures/Sky/
Here I list some images that show the problems:
[Black Edges instead of transparency]
broken_n.png: PNG image data, 256 x 256, 8-bit/color RGBA,
Hi,
Tatsuhiro Nishioka schrieb:
> Another problem is that imageio's libpng doesn't properly handle transparency
> in PNG file. The problem I have is that the transparency in PNG files are not
> at all handled and we see a lot of unexpected black or dark portions. I
> strongly recommend the use
HI Tat,
I don't have a OSX system to test against personally, but for those
who do have OSX and wish to help investigate this bug with the imageio
plugin it would be worth putting together a small set of test images
that you see problems so that they can reproduce the problem
themselves.
Also if
Hi there,
I have two problems in drawing PNG image using imageio on Mac OS X.
One problem is that 16-bit grayscale textures (PNG images) cannot be loaded due
to the following errors:
: CGBitmapContextCreate: unsupported parameter combination: 8 integer
bits/component; 16 bits/pixel; 1-componen
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