Orbit Trap in GI frag

[eiffie]

Oh your right, my bad, forgot about the powDir function etc.
Possibly the ambient term provides this light - I will look into it later. Thanks.

[vinz]

You're Super Kewl Eiffie , but i don't want to bother you with details ...

I just have a question, is it possible to make my object emiting light regarding the power of the color ?
i know that i can pout a -2 value to my object, but it become completly white ...

i'm looking something more like that ... it was the result of multiplicating the orbitrap color OrbitStrength  by 100 -  "vec3 color = mix(BaseColor, 3.0*orbitColor,  OrbitStrength);
the result is interesting, but i'm pretty sure that i can achieve a beter result in a more regular way! ...
i was also suprised to see that the diffuse color can give a result like that !  funny  

[eiffie]

Yes it is the "ambience" variable which is just a hack to add light particularly to translucent objects so they glow with an inner light.
This script isn't really designed for variable intensity of emitted light so not sure of the best way to add it. I have done that in other scripts (simply changing the color of the emitted light) but wasn't happy with the result - it was too unrealistic as the color of the light needs to blend as you move away from the object.
You are right you can just give it the -2.0 id and then adjust the lightColor much darker. It shouldn't be pure white then. You will need to change the lightColor based on the orbitTrap.

I am working on an unbiased version - one that doesn't cheat towards the light. It will use volumetric light sources which could then have different colors at different locations but then you will have to figure out how to change your DE to a LightEnergy check. - lol more on that later

[vinz]

Thanks for the clues i will give some Tries...

I am working on an unbiased version - one that doesn't cheat towards the light. It will use volumetric light sources ...

WOAW !!  
 I'm totaly Mind Blowed by what you're able to do !

[vinz]

HAHAH! It Works !!   ....

i've put the Icosa id to -2 and modified the line : else tcol=getColorOrbit()/max(lStrength*erl*erl,0.5);//we hit a DE light so make it bright!

1.- How can i Had bloom like for emitters ?

2.-there is strange behaviour because the  light projecttion on the floor is depending on the sun position   ( but it's fun )



Same with Dof !! Excellent



 

[vinz]

Hi   !!!

I've hard time to create nice metal material.

-> I would like to add some fresnel reflection and also control the specular color of material ! i'm requesting any help available to do this ...

as always i will try to do it by myself, but i'm pretty sure it will be an exotic mess (if i succeed ) , like all modifications i've already done until now

THANKS !!!!!!!!

[vinz]

Hahahaa Ok,  
so i wasn't  able to add a fresnel reflection, but i found the way to make a falloff map on the reflection  and also on color ! .... that make a nice effect.  
 
i added ...

Code:

coef = dot(nor,rd)-Falloff;
m.refrRefl = mix( 0.01,m.refrRefl, (coef));

in the same way with color:

Code:

m.color = mix( FalloffColor, BaseColor, (1-coef));

         

[eiffie]

I almost prefer hacks to physical equations as they are easier to control artistically. Nice job!

[vinz]

Thanks you Eiffie , glad to see that you are following , my adventure into the modding of your nice Gi renderer  

i've understood that "nor" is the normal of the surface and "rd" is related to the view, i saw that you used the vector product "dot(nor,rd)" for the refracting calculation.
please is it possible to you to try to explain me what this vector product is calculating ? is it an angle ? a distance ?

im' afraid to see that in despite of the days i've taken to try to understand the script , for now it still stay a black box