How does a layer style like glow or stroke works in 3D rendering mode? (Classic3D)

Question

I am working on OpenGL plugin for AE where I need to reproduce some of the layer styles. I have played around with stroke and outer glow styles in 3d mode and I can see that , if setting spread 100% , it seems as if the outer glow area is defined by a polygon? if not , is it a signed distance field texture responsible for the expansion of the glow? What is the most preciese way to reproduce this kind of styles?

Thanks .

shachar carmi · Answer

hey SasMaster! welcome to the forum.the exact behavior of the glow layer style is not really documented anywhere. if you want to mimic it, you'll have to reverse engineer it. :-(how ever it shouldn't be too difficult. IMHO it's just a contasted blur of the layer's alpha...i just want to make sure you're aware of the layer styles being applied to the layer post-transform, and not pre, like regular effects.so if you're planning on building a layer effect that mimics the layer styles it's going to differ by at least that notion.sorry for being nothing but bad news... i'm usually a very nice person. :-)

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