Chaos Corona Forum

General Category => Gallery => Work in Progress/Tests => Topic started by: danielmn on 2015-02-07, 22:45:21

Title: dan'z Test
Post by: danielmn on 2015-02-07, 22:45:21

Hey guys been working with corona for a bit and thought I need to start posting some stuff.



some more playing around check page 3 for more

Title: Re: dan'z Test
Post by: danielmn on 2015-02-07, 22:47:02

a few color variations
and small imporvements on the shader

Title: Re: dan'z Test
Post by: danielmn on 2015-02-07, 22:51:07

here is a simple test on bottle scene I brefly started



the blotchyness i brought up in the i need help section btw

Title: Re: dan'z Test
Post by: danielmn on 2015-02-27, 07:56:22

hey guys just got the new Corona 1.0 and I freakin love it so much and I can stop tring to break it.   But its doing great

here are some of my latest wax test with the new volume and absorbtion methods

first one is just me playing around,

Title: Re: dan'z Test
Post by: danielmn on 2015-02-27, 08:01:27

and here is diamond for  measure

Title: Re: dan'z Test
Post by: danielmn on 2015-02-27, 17:17:34

here is something I have done for the cgtalk lighting challenge

doing element renders today but here is a raw beuty pass with almost no texturing wish i had more time.

and the second has some fast post on it

Title: Re: dan'z Test
Post by: danielmn on 2015-05-02, 05:52:57

so here is a gold material I am working on.  plus the shader tree

Title: Re: dan'z Test
Post by: danielmn on 2015-05-07, 17:25:27

some render stuff

Title: Re: dan'z Test
Post by: danielmn on 2015-05-07, 17:31:59

alex roman inspired piece

Title: Re: dan'z Test
Post by: danielmn on 2015-05-07, 17:48:38

here is a piece slowly coming along

Title: Re: dan'z Test
Post by: danielmn on 2015-05-18, 19:34:13

a little diagram i found on renderman knew layer shading,  but notes I thought were interesting and a good reference for other shaders

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 02:39:13

Diamonds in the sky for yall.

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 16:57:55

working on skin shading from
digital emily v2

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 17:02:51

here are some progress stuff showing the displacment and micro displacement....only displacment info.

Last image is the 2 maps coming together

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 17:57:52

here are a few more renders of what i have so far

first 2 are some difusse ans SSS work

the rest is everything I have so far put together.   NO photoshop work was done

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 18:03:07

here are some more render test

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 18:04:12

more renders

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 18:07:21

a few more

Title: Re: dan'z Test
Post by: maru on 2015-06-02, 18:36:01

I don't know how this model looks but SSS will work properly on capped (solid) geometry only.

Title: Re: dan'z Test
Post by: danielmn on 2015-06-02, 18:37:58

I did not know that.  The SSS seems to working well enough but I will do that and see what happens

Title: Re: dan'z Test
Post by: danielmn on 2015-06-04, 05:52:11

Ok
so I re-wrote the way I was doing things.  As one shader to do everything I wanted was not going to happen.
I am trying for this attempt to keep as true to the Dataset and parameters the Digital Human league have set out here:http://gl.ict.usc.edu/Research/DigitalEmily2/

So I made 4 passes  ( Difusse SSS, Single Scatter, Primary Spec, Secondary Spec)

This is only being lit up by the HDR no other lights.
I used a Max's standard Phong shader for the Spec didnt really see any other way to get around this, but the results seem to be pretty on par with theirs, even though its not completely physically plausible.  If corona has a way to turn its shader into phong that would be a great help.
I will do a Hires version later but I am very pleased with this version

Title: Re: dan'z Test
Post by: danielmn on 2015-06-04, 05:57:29

Here is a render pass breakdown

Title: Re: dan'z Test
Post by: GestaltDesign on 2015-06-04, 10:42:49

I am not sure if it will help, but as the legacy Ashikhmin Shirley BRDF is not a microfacet BRDF (Anisotropic Phong?) you might try that as an alternative.
The legacy BRDF can be activated from the advanced options in the material settings by selecting the A7 legacy mode.

As I understand The Digital Human League project is trying to acheive robust physically accurate results with micro displacement/bump which is why to avoid a microfacet BRDF model.
Don't hold me to it, sure there are points that I am missing lol, but it would seem the best approach for Corona guys joining the project, it is a really interesting subject.

Title: Re: dan'z Test
Post by: Ondra on 2015-06-04, 11:18:20

Quote from: GestaltDesign on 2015-06-04, 10:42:49

I am not sure if it will help, but as the legacy Ashikhmin Shirley BRDF is not a microfacet BRDF (Anisotropic Phong?) you might try that as an alternative.

Actually it kinda is (-ish)

Quote from: GestaltDesign on 2015-06-04, 10:42:49

The legacy BRDF can be activated from the advanced options in the material settings and activating the A7 legacy mode.

This is no longer possible in latest daily/upcoming stable builds

Title: Re: dan'z Test
Post by: GestaltDesign on 2015-06-04, 12:32:40

Ah, ok. I don't want to spread false information and it is good to check/confirm as I learn! Appreciate it!

Title: Re: dan'z Test
Post by: danielmn on 2015-06-05, 05:48:04

did a little more work on the shader and took some hi res stills

Title: Re: dan'z Test
Post by: danielmn on 2015-06-05, 05:49:30

a few more angles

Title: Re: dan'z Test
Post by: danielmn on 2015-06-05, 05:51:30

I went back on this one.
To take through some post adjustment and a better composite with the background.

Plus a few close ups

Title: Re: dan'z Test
Post by: danielmn on 2015-07-17, 09:29:11

test

Title: Re: dan'z Test
Post by: danielmn on 2016-03-09, 19:44:36

here is a HDRI, with back plate Test

the interesting thing here is I used spherical enviroment HDRI, but then flatten it with ptgui- demo version.  If you know any other way to get a back plate from the spherical enviroment , please let me know

Title: Re: dan'z Test
Post by: romullus on 2016-03-09, 20:37:18

Try Hugin. It does everything ptgui do, but without watermark, because it's free.

Title: Re: dan'z Test
Post by: danielmn on 2016-03-10, 22:38:39

thanks romullus ,  I couldnt get that to work for me.  So instead, I did what I should of done all along.

Mad a inverted sphere in max, put a cam in the middle and take a render.

attached is the the orignal spherical and new the  backplate taken from 3d max

Title: Re: dan'z Test
Post by: danielmn on 2016-03-10, 22:39:36

and here is a test with some random objects and material


thx to hdri haven for the orginal HDRI

Title: Re: dan'z Test
Post by: romullus on 2016-03-11, 13:17:35

You don't have to extract backplate for that. Just put HDRI panorama into enviroment and render - it will be exactly the same, just more flexible and convenient :]

Anyway, here's tutorial how to get rectilinear projection out of equirectangular: https://panospace.wordpress.com/2008/03/18/edit-the-nadir/ You just have to enter different numbers into numerical transformation window to get backplate you want.

Title: Re: dan'z Test
Post by: danielmn on 2016-03-11, 20:44:15

Hey rommullus, thx for the help.
Yeah that should work, seems obvious now.  Just been awhile since I was doing photo integration stuff  (which is exactly why I started )   thx again.