I have a strange problem with a self-created texture. The output image is a * .jpg 330x890 pixels. In the 3D view "Material" everything still looks like it should, but the material preview already shows distortions. After rendering with the Blender engine (F12) come out very strange geometric figures. Whats going on here?
sorry, that was my own mistake. I have changed the value of "distortion" in 3D-View, "properties" panel, "influence". Problem solved.