Re: Refection in the RayShade renderer

[Jose' C. <cru...@ce...>]

Il giorno 27/apr/07, alle ore 22:45, James Walker ha scritto:

> Roger Holmes wrote:
>> On 27 Apr, 2007, at 13:45, Jose' Cruanyes wrote:
>
>>> this parameter controls how big is the reflection light spot on the
>>> figure.
>>>
>>> in GL it goes from
>>>
>>> 0 (no spot (because too big) and hence rough and hence not =20
>>> reflecting)
>>> to
>>> 128 (pointy spot, hence polish hence reflecting)
>>
>> Is it the other way round perhaps?
>
> No, it is not the other way around, but it is a bit more complicated,
> because specular color is also involved.  In OpenGL it is more =20
> accurate
> to say that you get a non-reflecting surface by setting the specular
> color to black, never mind the value of GL_SHININESS.

I've think about it, to make the reflection value based in the =20
luminance of the specular color, but at last I've opted for the =20
reasoning in the previous mail, to have a parameter easier to set by =20
the user

I'm open to suggestions


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