Re: Dynamic arrays

[Bob Pendleton <bob@pendleton.com>]

For colors it depends on the way the actual bits in the frame buffer are
interpreted by the hardware. Usually some number of bits are allocated
for each of RGB. For example, if the machine supports 24 bit color then
there are 8 bits for each of read, green, and blue. The value range for
an 8 bit number is 0-255. When a color is specified as a float between 0
and 1 then the color value is mapped from the range 0.0-1.0 to 0-255.
That means that if you specify a color value of 0 then the bits get set
to zero and if you specify a color value of 1.0 the bits get set to 255.
If you are using 15 bit color then each of red, green, and blue get 5
bits. 

Who ever told you that is not very well informed. 

			Bob P.

dakline@vassar.edu wrote:
> 
> >OpenGL uses integers for their color.  It's operators are overloaded so it
> >can take nearly any value but behind the scene they are all converted to
> >integers for their functions.
> >
> What are the ranges for these integers? I thought rgb values went from 0-1,
> which makes for very simple colors if you can only use integers.
> 
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