Alpha blending 'from black' even with premultiplied alpha

Gooni

Hi,

I've been using Spine since the second kickstarter but with my recent update to 2.1.05 (i also updated the runtimes) I have a new issue:
I have a couple of images I want to alpha-blend in and with spine.
All animations (resp. alpha blendings) look as expected in the editor.
When I run them in LibGDX however, my images are 'tinted black', while fading.
I've double-checked that the keyframe color for my images are both 255,255,255,X (X being 0 resp. 255), which is obviously the case because it looks fine in the editor.
In my game however it looks as if i was blending from 0,0,0,0 to 255,255,255,255.
I've done my homework and found some responses by Nathan where he points out that you are expected to export with premultiplied alpha for proper blending, which I did, but to no avail.
Does anyone have the same issue?

Cheers, Gooni.

Nate

Did you tell SkeletonRenderer you are using premultiplied alpha?

Gooni

i told no one. now it works, thx.
it seems to work w/o premultiplied alpha as long as i don't use meshes, does that make sense?
also would you suggest reexporting everything with premultiplied alpha and it on for skeletonrenderer at startup?
or should i decide per animation resp. atlas and turn that on/off? i assumed it would somehow be done automatically per animation, so i didnt know i was expected to set that manually..

Nate

Ideally, all images use premultiplied alpha but you can use normal alpha and bleeding, it is likely good enough that you'll never notice any blending issues.

Gooni

thx a ton for your quick answers!