daylight portal

Hello,

I wanted to test daylight portal feature so, in the model below, (I cannot upload the sketchup model 94kb), I set the left window glass material to daylight, the right window not.

After 10 passes, I cannot see any difference. Is it normal?

▶ Reply to This

Replies to This Discussion

Permalink Reply by Render Plus on October 15, 2011 at 8:14am

There is a setting "Automatic daylight portals" on the Preset setup tab.

You will have to uncheck it if you want to see how things work without daylight portals.

▶ Reply

Permalink Reply by Alain Bonnefoy on October 16, 2011 at 5:37am

I tried to uncheck "Atomatic daylight portal" on the preset tab but don't see difference between the 2 windows.

Well, I suppose it's not so important in fact. Just for curiosity.

▶ Reply

Permalink Reply by Render Plus on October 16, 2011 at 7:38am

It will work eventually if you get all the settings right. But for interiors we recommend the Interior w/sun preset with the auto daylight portals left on.

Here is a similar scene with no daylight portals on the left and 10 passes

▶ Reply

Permalink Reply by Alain Bonnefoy on October 16, 2011 at 11:34am

Ok AL,

Thanks

▶ Reply

Permalink Reply by Render Plus on October 17, 2011 at 8:04am

Just use auto0-daylight portals on interior scenes with windows.

Auto-daylight portals, and daylight portals do not with the Path tracer engine. The path tracer processes light from all directions - one direction per pass - so it needs many more passes to resolve.

Here is that same scene rendered for 500 passes, (about 40 minutes), in the path tracer.