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More from ~Djohaal

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December 10, 2009
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:icondjohaal:
First one of my rendering tutorials, more to follow.
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:iconmishrafathom:
~MishraFathom Dec 21, 2009
this confuses me a little i use maya.... and normaly depends on the material i use but is this like the same thing as blurring the reflections........ or what... cos diffuse, reflectivity and stuff like that are normaly different things i can ajust cos isnt diffuse related to how the hot spot and the shadows wrap around an objects??

texturing and lighting is not my strong point..
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:icondjohaal:
~Djohaal Dec 21, 2009
It really depends on your renderer. Most engines simplify stuff and divide the reflection from the diffuse component. While an approximation, it works well in 99% of the cases. Although in the truth, "reflection" and "diffuse" components are a monolithic physical entity. This tutorial covers the concept of roughness itself, regardless of software, adapting it to specific aplications is beyond it scope.
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:iconmishrafathom:
~MishraFathom Dec 21, 2009
ah .... so wouldnt just havin a reflective object with a type of bump map work too just making it fine and messing with the bump map options?
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:icondjohaal:
~Djohaal Dec 21, 2009
The default blur reflections should be faster and more optimized (it is there for a reason) But yes, very fine bump map is a possible implementation, although a bit inneficient.
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:iconmishrafathom:
~MishraFathom Dec 21, 2009
ah okay,.... well there is most likely a material that has roughness built in to it or you could layer shaders....
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:icondjohaal:
~Djohaal Dec 21, 2009
It often is misnamed "glossyness" in some renderers. The effect however is a bit mashed up, you need to tune both specular and glossyness values to mimic different roughness curves.
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:iconmishrafathom:
~MishraFathom Dec 21, 2009
well i phong material has gloss.... its pretty good for making metalic and plastic stuff. but it has a few other setting that i cant think of right now but that sounds the closes the the material you are describing.
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:icondjohaal:
~Djohaal Dec 21, 2009
Experiment! Plop a sphere, a light, and try out different settings :)
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(1 Reply)
:icondanielkrull:
~danielkrull Dec 11, 2009
Awsome!
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:iconmehranmo:
~MehranMo Dec 10, 2009  Hobbyist General Artist
Great Tutorial. Soon I'll do a Glass tutorial. I've always wanted to make one but never got round to it.
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