Op 18/06/2021 om 19:08 schreef Norbert Kern:
> Thomas de Groot <tho### [at] degrootorg> wrote:
> 
>> The Master did it again.
>>
>> What can I say? It is the kind of scene we would like to emulate but
>> somehow we always stay far behind. Very inspiring indeed.
>>
>> The brook's water is very well done. I guess the surface is one of the
>> many meshes? with the proper media of course.
>>
>> These kind of landscapes are your trademark without any doubt.
>>
>> What I do doubt however, is whether I could manage a 22 GB memory usage
>> on my systems (for rendering the scene?)
>>
>> --
>> Thomas
> 
> 
> Thanks Thomas,
> water is a mesh indeed, but it doesn't look very special. I think a heightfield
> made with an averaged wrinkles / rigded_mf pattern could do it too.

Well, it is perfectly doing its job.

> The water material is simple -
> texture {
>          pigment {color rgbt <0.25,0.35,0.2,1>}
>          normal {
>                  average
>                  normal_map {
>                          [1      wrinkles 0.04 scale 50]
>                          [1      granite 0.01 scale 0.5]
>                          [1      bumps 0.14 warp {turbulence 1} scale 0.03]
>                          [1      bumps 0.1 warp {turbulence 0.5} scale 0.0003]
>                  }
>          }
>          finish {
>                  ambient 0
>                  diffuse 0.3
>                  reflection {0.03, 1 fresnel on metallic 0.3}
>                  specular 5
>                  roughness 0.003
>          }
> }
> interior {
>          ior 1.33
>          caustics 2
>          fade_distance 0.4
>          fade_power 1001
>          fade_color <0.5,0.7,0.4>
> }
> 
I notice that you use /some/ color in the rgbt of the water, despite a 
transmit of 1. Personally, I have not noticed this approach did add 
anything (I may be wrong) and simply use  rgbt 1, in general. Using 
'filter' would be a different matter of course.

> Starting point of the image was a 76 MB obj file with stones and water.
> I split it in 7 parts and used the displacement function of Poseray. In the end
> I had 7 large meshes (> 1.1 GB in sum).
> 
Very good. I am increasingly using the displacement function of Poseray. 
It does not get all the attention that it merits.

-- 
Thomas

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