.BMP files definitely won't work.
Since there is no "base URL", texture URL such as "./image.png" is useless. You have to specify fully qualified URL, for example "file:///C:/Scenes/textures/image.png".
(Make string containing full path to texture, then convert it to URL with file scheme.)
Tanks o lot! I tried this way with .png and it works.
The only problem is that the image is upside down.
How can I fix it?
Regards
Stoyan