Greetings,
I'm developing with flash stage3d api, so I can't say for sure what's going on, but it seems that I have antialiasing artifact.
It appears only when I render to texture with any antialiasing. On movement everything much worse - this broken pixels randomly appears on the edge of a sphere. I tried to debug with renderdoc (stage3d api uses dx11 under the hood), but this great tool shows me wrong results. So I'll listen for more experienced guys with pleasure - is it trully problems with antialiased render target or somethinf else? And I'll check my shader more carefully.