Ok, let me make a small update, I was able to get osg-3.2 to load the example image using the code in attach. I can't be precise in what worked, but I guess updating libpng helped.
Now it output: 0 0 0 0 0 0 0 1 0 128 128 2 64 128 191 4 64 128 191 8 64 128 191 16 64 128 191 32 64 128 191 64 64 128 191 128 64 128 192 255 Which is still not the desired result, but it is different from the old result 0 0 0 0 0 0 0 1 0 127 127 2 63 127 191 4 63 127 191 8 63 127 191 16 63 127 191 32 63 127 191 64 63 127 191 128 64 128 192 255 Weird, weird. I guess I'll have to separate channels into several images as a workaround - at least for now. tschüss
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