I had a texture which had some transparancy before. (And indeed at the
beginning I used alpha-blending). I removed alpha-blending long ago
and the texture doesnt have any transparency BUT it had an
alpha-channel (i.e. the image is saved as RGBA not as RGB).
After flattening the image in Gimp everything looks nice.Maybe it could be useful to put that as an extra hint into blender2cal3d? Henning
