For a color index, final conversion consists of masking the bits of the
index to the left of the binary point by 
,
where n is the number of bits in an index buffer.
For RGBA components,
each element is clamped to 
.
The resulting values are converted to fixed-point according to the rules
given in section 2.13.9 (Final Color Processing).
For a depth component,
an element is first clamped to 
and then converted to fixed-point
as if it were a window z value
(see section 2.10.1, Controlling the Viewport).
Stencil indices are masked by 
,
where n is the number of bits in the stencil buffer.