Hello guy,
we know, opacity is a very “killer render time” beast!
I wanted to see if there is some boost with the new Coronabitmap
Unfortunately no. But I noticed that, with opacity OFF, I can have a 2.5X boost! WOW!
Ondra, maybe can you improve something? Like in VRay?
Thanks!
Comparing opacity vs no opacity in Corona and filtered opacity vs non filtered opacity in Vray isn’t very fair.
Yes, but for static rendering, I would like to get the lower rendering time possible. If non filtered can help, why not?
I tried with CoronaBitmap to change filtering blur and interpolation. No differences.
Vray has the new Clip Map Opacity to render really fast! Maybe corona can come up with something like that.
I know, but, maybe, as VRay does, we can reduce rendering time in such situations. 2.5X is very much!
Alternativelly you can make action in photoshop to resave image in indexed color mode, run all your opacity maps through it and forget all headaches with opacity once and for all :]
Did quick non scientific comparison with Mental Ray.
MR
no opacity - 67 s
opacity - 202 s (x3)
opacity + translucency - 1063 s (x16)
Corona
no opacity - 54 s
opacity - 84 s (x1.6)
opacity + translucency - 96 s (x1.8)
So we have nothing to complaint about ;]
So, it’s a ray-tracer “problem”. Nothing to do… =) good to know, sadly ^___^
