OTOY Forums

I tried Octane Render 1.0 Beta on a quick scene I baked with Silo 2.1 Professional. However I had some problems...

1) Near-vertical surfaces seem to have this "stairs effect" or unaliased edges.

2) I would like to have some bokeh on background, but cannot understand how to do it with this program. With real photo camera I can do that with no problems.

I attached some pics, can someone offer some advice?

BTW, render time was about 3 hours and 15 minutes for 2880 x 1800 image, maxdepth 64 and maxsamples 16000.

Hi,

Enable 'filter' to render finals, that solves the aliasing issue.
It's turned off by default on the directlighting kernel for interactive/speed reasons.

16000 samples is a bit overkill no ?
I think you could get away easily with only 1000 or 2000 in say 10 minutes for that image tops...

Radiance

Thanks, Radiance - I had somehow missed the filter.

Below are some image quality comparisons using 1000, 2000, 4000 and 8000 samples per pixel. As can be seen, I also realized how to create bokeh-effect: you just have to bring the camera really close to the item you want to focus on. I took screenshots and cropped, so also the time required for each render can be seen. The resolution in these is 1280 x 720.

However, even with the filter on I can still see some aliasing, for example on the wooden frame around the lens. I guess this would be fixed if the user could select different antialiasing strengths, like in computer games, where you can use 4x, 8x or 16x AA?

Not sure what you are referring to here, but for the actual aliasing, this is just a JPG screenshot - do you still get the aliasing if you actually save the image (it will save as PNG)?

If you are referring to the faceting seen on the outer edges, you just need to smooth that piece of geometry more in your 3d app before exporting to OBJ for rendering.

Phr0stByte wrote:do you still get the aliasing if you actually save the image (it will save as PNG)?

I rendered the picture again, saved the final render as PNG and cropped the area where I see the problem. It is attached both in PNG and JPG format, so you can see the problem is not about filetype. The picture is rendered with "filter" option on, but this doesn't seem to be enough here. I don't think that the problem is in object geometry?

See Rad's explanation and workaround here: http://www.refractivesoftware.com/forum ... f=23&t=705