The image above was rendered using A+D materials, it took 3H45min. One of the challenges is the when using the MR exposure control, the preview does not show an enough lit scene for me to make the right decissions in regards to exposure and such (setting) Is there a way to make it render slightly longer?
The main concern is the glass panes on windows. In the above render I had to completly hide the glass (a thin box with a double sided glass A+D material) in order for the sun to shine in and cast shadows. I wonder what I am doing wrong. I have see the in the Autodesk demos they have glass in their scenes.
Here is the Mentalray counter part, it took 1min 12sec. GI+FG
Can I get the same results with iray?
At this point I am starting to question what is the advantage of iray.... at least with other engines you get realtime feedback and they seem to be much much faster. For instance Octane (the only one I have played with).
In case you're wondering the iray machine is
i7 930 + 2 GTX470 GPU
Mentalray render took place on i5 Quadcore (imac) + i7 930 distribured rendering.