Hi all, new in the forum but not with Corona here! :)
Just a question. At work, I start a render of a scene as usual. No problems. But sometimes it happens that the render, I don't know why, starts spreading black pixels randomly, in a similar way as they appear when pre-computing lighting, and in the end the render is completely black. Instead of light ray pixels, with RGB adjusting to finally get the render, I see black (pure black) dots (pixel-size) spreading, I call it "black fireflies" instead of usual light fireflies artifacts, until the completely black result.
This happens very rarely (just have seen it 2 or 3 times for some 400 renders), and don't know when it starts (pass #) because I allow the render to process all night long (big images, 5000x4000).
ID, wirecolor, sourcecolor, reflection, all render as usual, as they take only 5 passes. In scene, no funny things: correct lighting and materials, no black objects... just render turning black slowly.
I use a xeon e2650, 64gb RAM, and nvidia 1050. Video drivers in 3Dmax cannot be the issue, as all displays fine.
Any ideas?