Matt
02-20-2006, 11:38 AM
Hi All!
I'm pretty sure this may have been posted before, but I couldn't find it. I was doing some renders for a client, that had some transparent areas with refraction on. The original background had a dark 'infinity wall' but after seeing the final render the client wanted a light background. No problem! I'd saved the alpha channel within the render and set the background object's surface to 'Unaffacted by Surface' while all foreground objects were on 'Surface Opacity'.
However, when I came to removing the background with the alpha channel it was incorrect. It was like the refraction just hadn't been calculated! See the attached test image to see what I mean.
I had to render out some patches of the affected areas using LightWave, even turned off reflections and shadows it still took a while (render size was a massive 9933 x 7016, basically A1 @ 300dpi).
Anyone else had this? Is Worley aware of this? Quite a fundamental cockup if you ask me!
Matt
I'm pretty sure this may have been posted before, but I couldn't find it. I was doing some renders for a client, that had some transparent areas with refraction on. The original background had a dark 'infinity wall' but after seeing the final render the client wanted a light background. No problem! I'd saved the alpha channel within the render and set the background object's surface to 'Unaffacted by Surface' while all foreground objects were on 'Surface Opacity'.
However, when I came to removing the background with the alpha channel it was incorrect. It was like the refraction just hadn't been calculated! See the attached test image to see what I mean.
I had to render out some patches of the affected areas using LightWave, even turned off reflections and shadows it still took a while (render size was a massive 9933 x 7016, basically A1 @ 300dpi).
Anyone else had this? Is Worley aware of this? Quite a fundamental cockup if you ask me!
Matt