Perhaps we chould choose the shader style we want ? why not ?
With dark ugly lines or not ?

I don't really know why?
The dark lines are not a feature. They are an unwanted and bad looking effect caused by the "old" blending mode.

Yes, but in fact it makes some sort of new shaders

@Kartoffel :
Is your last shader update enought optimize if we could say in terms of speed ?
We can consider it as final and ready for projects ?
(personnaly i don't mind a lot and will use it as it works)

Yes it can already be used for projects and it's already optimized.

But I've got 7 free days ( no school ) and I'm going to make some final adjustments and efficiency optimizations in the next one or two days and I will make it more userfriendly.

This bloom shader works with .tga images ? How ?