C4D Glass, HDRI, 3DS MAX Example....help please..

[R1PPER]

Hi mate, this thred should help you but get ready for some longish render times.

http://www.cgtalk.com/showthread.php?t=166147

[Tugmaster]

Kornboy, It's hard to duplicate someone elses work rendered in a different program. lighting and especially reflection maps have a big impact on on how the glass turns out. try using the Banj shader and a good reflect map and tweek untill you get the look your after. Here's a quick render I did but it doesn't look quite the same. I didn't use radiosity or caustics on this as it's just a quick shader test and I'm busy at work. I think you can get close with a little time and effort though. Good luck!




http://img.photobucket.com/albums/v50/Tugmaster/glasstest3.jpg

[BESTrin]

Ripper That thread is interesting but pretty app specific. I looked at it a while back but theres not much of use for c4d users. Im trying to get my old renderosity acount up so i can see the pic.

[AdamT]

Looks like the Max glass uses dispersion (darker middle), which is hard to recreate in Cinema. You can use the SSS shader in transparency, but be prepared for a looong render. Maybe Remo's new spectral shader can help?

[Tugmaster]

Adam, you can always fake the dipersion. I just added a slightly darker glass shader to the middle part.





http://img.photobucket.com/albums/v50/Tugmaster/glasstest4.jpg

[Per-Anders]

it's not dispersion, just depth tinting, and you could also simply use the free distance falloff plugin to do this.

[Tugmaster]

Funny thing is I already have the distance falloff plugin and didn't even think of it. I thought a circular gradient in the reflection and transparency channels might work. It's hell getting old. The memory is going fast. I better check my plugins folder to see what I have that I don't know I have.

[policarpo]

Hey, where is this Distance Falloff plugin everyone speaks of? Sorry for not digging around, but I just had to be blunt and ask. :drool:

[AdamT]

Distance falloff will work as long as the object is rotated as in the above image, but I don't think it will look right with different rotations. The far appendage will be darkened most when the middle part should should receive the bulk of the effect. That is if "distance" as used in the shader is distance from the camera and not distance measured from the surface normal. I think it is camera distance that's used in the shader.

[vesalus]

i personnally would avoid the banj cause it a time consuming texture...
what about a bit of fresnel in the reflection and in the transparency?
had you tested your hdr in the environement tag of your texture?

[kornboy_hiv]

Thanks everyone for discussing my topic, however I'm still a little unsure of how I can go about it, maybe if someone could give me some material settings?? I'm very much a beginner, so all the help I can get would be great, and very encouraging...

Cheers.

Grant McCall

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