Engine 2 test

[Peter Milner]

Just started a render using Engine 2 and this is the CPU usage I get (no higher than 23%).

Is this normal?

With Path Tracer, everything maxes out

[Peter Milner]

At the moment it seems that PT resolves quicker than Engine 2 judging by the number of artefacts left in this render.

Here's a more direct comparison.

PT took  one hour to do 300 passes and is nearly finished, whereas Engine 2 took one and a half hours to do 300 passes and clearly needs much longer.

Balance of lighting is much different though I can't say which is more accurate.

[Roy Hirshkowitz]

Good comparison test-- it illustrates a bunch of things pretty nicely.  We do need to do equal time comparisons-- I'll add that feature soon to make it a little easier to compare these directly.

e2 is doing a pretty nice job of handling the diffuse indirect illumination on the walls. Much less noise there, particularly in the shadow of the painting.  (There is still a vestigial bloom artifact just to the right of the window on the left-- near the little edge which doesn't show up on e1 at all (is this real??))

Most glossy reflections of daylight are doing better with the path tracer-- expected due to the use of portals.

Table legs are doing a little better with e2,

Don't like the e2 low-gloss surfaces at all wrt daylight-- armrests, telephone, etc..  This is probably an action item, though I'm not yet sure what to do.

[Jan Verzelen]

i already sent you this drawing (see the "new engine" topic") it's just another view of the same room. The drawing changed but it already occured in the one you have.

[Roy Hirshkowitz]

Thanks Jan-- I've got the alpha channel problem fixed now.

[akinlolu olugboji]

Clipping Plane does not work well with E2 & 3 but it does with E0 & 1.

[Miguel Tano Adanes]

I still have to really understand how clipping planes work in nXt. I was used to Ar3 ones which were more efficient, in my opinion.

[akinlolu olugboji]

Within the NXT interface is widget for adding clipping plane. You just click and put it where you want. It comes in as a T, the red line is the direction of the clip, in other words everything in front of the white line on the side of the red shows and those on the other side invisible but they do contribute to the rendering.