Sorry to bump this, but I have a question.
I'm having trouble with specific Macs... If their videocard is the Intel HD 3000, I get some weird artifacts in my game when using Node-Webkit. I do not get the same artifacts if it's the same videocard running on Windows.
This only happens with some webgl effects. In this case my character has a ReplaceColor effect, so this black square appears around her... It also happens with the outline effect but that's a 3rd party plugin.
However, it doesn't happen with some effects like the greyscale effect.
It really looks like it would be problem that could easily be fixed by updating the videocard, but I'm new to OS X and apparently this isn't a possibility. I'm running OS X 10.9...
Anyone experienced anything like that? Right now this is the only thing avoiding me from releasing my game on OS X.