Test the transition between images in Image {nav View}, with the 'None'
transparent background option enabled. Should test between the folowing
types of images:
- Large raster with no alpha channel, e.g. a wallpaper
- Raster image with alpha channel
- SVG
Animation should be smooth with no artifacts. The main view background
shouldn't be visible behind the image during the fade.
{nav View} with animations turned off should work as expected.
Full screen should show a textured background with OpenGL animations, i.e.,
no different than with Software animations.