glass caustics

[bdancer]

Re: glass caustics

Well, this really looks like a bug, we will check this. Thanks for the report!

[tvel86]

Re: glass caustics

I found this: to generate accurate caustics you need to use bigger scene size. Here is two renders with bigger size and with different of light position. The settings of caustics: multiplier 2, search distance 2, max photons 130 and light caustics subbdivs 7000.

[tvel86]

Re: glass caustics

Here is another caustics tests what I was made: water and volumetric caustics.

[bdancer]

Re: glass caustics

tvel86, nice tests thanks!

[IkariShinji]

tvel86, thanks for posting this: It got me on the right track.

By scaling the scene up by a factor of 50 I got much better results. Still, this is a little bit inconvenient if you're used to modeling in real world scale. Unfortunately the scale function in Blender's scene settings seems to have no effect on the render (see attachment).

Could that be implemented into the exporter? So users could continue to model in real world scale and just adapt the scene scale before the export?

[tvel86]

Not at all! There is else one test of caustics with glases what I done in the same day when I posted previous posts, but unexpectedly the forum was moved to chaos group website and i did not post this image yet... I agree with IkariShinji - sometimes it is difficult to foresee what will be in the render when you work with these scale system. It looks like vray for blender "think", that 1 standart unit of blender scene(metric system also does not work correct) is 1cm in vray settings panel(search distance), and therefore you need to rescale your model. I could be wrong.

[bdancer]

Thanks guys! I'll check the units export.