> i'm currently in the need of getting the depth output of the scanline > renderer. Works fine so far, but as soon as you lower the resolution in the > viewer, major glitches in the depth map occur. I thought at first they might > originate in my node that i develop, but then i found out when rendering a > standard sphere through the scanline renderer, glitches may show up - in > terms of false depth values. > > i've attached screenshots that should outline the problem. the first 3 > impressions are from a standard sphere rendered through the scanline renderer > at different viewer resolutions, where the contrast was optimized by my own > plugin. the latter two screenshots show the original depth output, one in a > standard view, one with optimized contrast in photoshop - my plugin is not in > the stream. > > can someone tell me what this is - or if this is a bug - or how i could work > around that.
They're cracks at the edges of polys caused by a numerical instability that was never tracked down. It's a bug though I'm not sure if there's an official bug report. There's no workaround that I know of except to change the poly count which won't really fix the problem, but it might minimize its effects. -jonathan _______________________________________________ Nuke-users mailing list [email protected], http://forums.thefoundry.co.uk/ http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
