Glasses at PMC - caustics smooth - fail!? Tweet

[nuno1980]

Hi!

Glasses have 1.36 millions of polygons!! But...

Due to have any limitations for PMC kernel?

see screenshots:


caustics smooth - fail


-wireframe


-glasses setting


-Mat (liquid) setting


-PMC kernel setting

How do I remove "fail"?

[FooZe]

Are you happy to zip and post the obj for one of these glasses and let me have a try?
(or email to [email protected] Attention Chris.)

Thanks

[nuno1980]

Are you happy to zip and post the obj for one of these glasses and let me have a try?
(or email to [email protected] Attention Chris.)

Thanks

Ok, I have sent to support by email.

[FooZe]

Hi, i have been having a play with the scene. Depending on what process i put the OBJ through before rendering i get different results.

ie: I have loaded it into blender, removed the un-necessary geometry then rendered in blender, exported as OBJ again, rendered in the standalone and also imported the obj into C4D and rendered there.

I think a few things could be tweaked:
1) Use less max depth, i know it gives a lot of intricate caustics, but this is probably causing your problem. Far to many bounces means you see all sorts of things and have no idea where they are coming from (it also makes the render slower).
2) Double check your settings on export - check if you are exporting normals (if not try turning it on).
3) Add some caustic blur, even if you want crisp caustics - using something like 0.001 or even 0.0001 will increase render speed of caustics and shouldn't blur them too much.
4) Try using a lower parallelism (3,2 or even 1).
5) Double check scale. I had scale the scene by 0.0001 to get it the right size on import into blender. (and use something other than meters on import into the standalone).

To confirm if it's a OBJ export problem you could try the demo of the c4d plugin (it looked like it was exported from c4d?) and see if you get the same results.

Hope that's not information overload!

Thanks
Chris.

[nuno1980]

@FooZe: Sorry, I have sent by email on today (11:27am UTC). But I read here now and will try...

I want keep max depth 32 for especially objects mirrored and/or speculars (eg: glasses...) because the difference between 16- and 32-depth is little - 32-depth is less dark "glitch".

[nuno1980]

Oh! I haven't Cinema4D...

[MaTtY631990]

Why so many polys for the glasses, anyway. Is this is just testing for limits you are doing here.

[nuno1980]

New OR 1.5 fixed my issue. But specular material for glass hasn't "floattexture"!??? What's name succeed "floattexture"?

WARNING: But I'm very worried due to "water marks" added despite I don't want to render animation. But the developer may be maked mistake because the information doesn't say "water marks" for standalone demo. I respect remove "water marks" but to lock to save image fixed and animation for demo.

[roeland]

The floattexture is now called greyscale color.

--
Roeland

[nuno1980]

@roeland: Ok, I tried to change 0.500 (reflection) and 1.000 (transmission) in greyscale for glass/water material but looks glass/water very mirrored. Before, 1.20 is excellent - floattexture (reflection w/ 0.5 and transmission w/ 1.0) for glass/water.