Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] General Discussion => Topic started by: Worldmaker on 2015-06-01, 00:49:39

Title: PointPositionPass trouble
Post by: Worldmaker on 2015-06-01, 00:49:39
hi guys. im using corona alpha 1.00.02
3d max 2012. EyeonFusion 6.2 for compose.
I dont understand...
From 3d max i got CGeometry_WPP 32bit.. Loaded in fusion and got
a strange result... 3 volume masks))) instead of one. Can u expalain wats wrong? See pic below...
(http://i.imgur.com/uNgFFr7.jpg)
Title: Re: PointPositionPass trouble
Post by: racoonart on 2015-06-01, 00:51:27
It's broken. The wpp should have negative values, but corona currently outputs only absolute values =/
Title: Re: PointPositionPass trouble
Post by: Worldmaker on 2015-06-01, 00:55:14
so no way using corona WPP now?
may b any color correction or color normalization?
Title: Re: PointPositionPass trouble
Post by: racoonart on 2015-06-01, 11:02:59
A) You could move your scene so every coordinate is in positive space ;)
B) you could generate a new wpp in fusion using an imported camera and a zdepth (there is a node for that)

other than that, no there is no way. The data in the wpp is garbage.
Title: Re: PointPositionPass trouble
Post by: Worldmaker on 2015-06-01, 12:23:36
ok then.Will u fix this stuff in future?
A)))))))))))))
B)tooooo long(((

thx.


Title: Re: PointPositionPass trouble
Post by: racoonart on 2015-06-01, 12:28:55
I'm sure the corona devs will fix it eventually, the question is just "when".

A) is maybe not the best idea in huge scenes
B) is actually quite simple, your camera info is saved in the exr anyways. You just have to extract it and use it. You can do that with a few nodes and save it as a macro in fusion.
Title: Re: PointPositionPass trouble
Post by: Worldmaker on 2015-06-01, 14:15:26
many thx man...
Title: Re: PointPositionPass trouble
Post by: Ondra on 2015-06-01, 14:30:07
AFAIK I made this (using abs values) because 3dsmax was unable to handle negative values... I will give it another look.
Title: Re: PointPositionPass trouble
Post by: Worldmaker on 2015-06-01, 16:01:40
i was trying the same scene with Vray and mentalRay... everything ok. I got both negative values, then normalize
them from -1 to 1 in fusion and get nice result.

. I will give it another look. wat did u mean?
Title: Re: PointPositionPass trouble
Post by: rfletchr on 2015-06-09, 17:30:56
AFAIK I made this (using abs values) because 3dsmax was unable to handle negative values... I will give it another look.

Mental rays XYZ Generator works perfectly in max. Thats my "go to" for point position passes at the moment. of course the edging is different which causes its own issues. It would be great to have PPP working correctly from Corona. and Motion Vectors ;).. and all 3 types of normals
Title: Re: PointPositionPass trouble
Post by: rfletchr on 2015-06-09, 18:05:44
i was trying the same scene with Vray and mentalRay... everything ok. I got both negative values, then normalize
them from -1 to 1 in fusion and get nice result.

. I will give it another look. wat did u mean?

he means he'll(they'll?) take a look and see if they can make it work