neil.hug...@tesco.net schrieb:
> Hi All,
> 
> Please find attached a png file that has a purple circle, black boarder, and 
> an alpha channel. I'm using OSG1.2, and trying to read it in via the png 
> pluggin, and apply it to an object. The PNG loads, but the alpha channel is 
> being ignored, and I get solid white instead of the underlying object 
> color/texture. 
> 
> Please could someone tell me is there something wrong with the png file, the 
> reader, or am I doing something that's not possible.
> 
> Many thanks for any help.

there was no attachment.

Have you enabled GL_BLEND for your geometry?

node->getOrCreateStateSet()->setMode(GL_BLEND, osg::StateAttribute::ON);


cheers,
Stephan
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