To my surprise, I managed to create one single translucent shadow (unfortunately, I forgot to take a snapshot). Ever since then, all future shadows are just black.
How can one alter the opacity of a shadow? Is it solely dependent on the colour of the shadow caster sprite?
EDIT: Setting the character sprite to XOR (which made it disappear, kinda), I was able to recreate the effect.
Is there a way to force all shadows to look like the one on the right, without sacrificing the character sprite?
EDIT2: More importantly. How do I get WebGL enabled browsers to display those translucent shadows? They only show up in Firefox, as long as WebGL is disabled.
EDIT3: Never mind. I missed the opacity option inside the shadow light's menu. Working now. Alas, still a bit blocky.