Re: Refection in the RayShade renderer

[James W. <ja...@fr...>]

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 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 accurate 
to say that you get a non-reflecting surface by setting the specular 
color to black, never mind the value of GL_SHININESS.
-- 
   James W. Walker, Innoventive Software LLC
   <http://www.frameforge3d.com/>