Chaos Corona for 3ds Max > [Max] Bug Reporting

refractive+round edges+curtter = huge slowdown

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v.p.vlasenko:
Hi,
setup - "glass" object (green on screenshot), "liquid" object intersecting "glass" with round edge map in bump slot (blue) to add capillarity effect, copy of "glass" with push modifier with a small negative value and a cutter material applied to match glass walls, included "liquid" only (red).


Render time to 1% noise
1. glass+liquid - 21s
2. glass+liquid+round - 36s, 1.7 times slower
3. glass+liquid+cutter - 49s, 2,33 times slower. This is a question by itself - using cutter material gives a significant slowdown.
4. glass+liquid+round+cutter - 249s, 11,8 times slower???

3 - is it expected behavior with cutter and such slowdown? I encountered a noticeable slowdown many times in absolutely different scenes + a bug when a cut object was visible through all scene geometry despite obstacles between it and the camera (but that's another story and I'll report it next time when/if I catch it).

4 looks like a bug. 



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