NAME
    ReadPixelArray8 -- read the pen number value of a rectangular array
    of pixels starting at a specified x,y location and continuing
    through to another x,y location within a certain rastport. (v36)

SYNOPSIS
    count = ReadPixelArray8(rp,xstart,ystart,xstop,ystop,array,temprp)
    D0                      A0 D0:16  D1:16  D2:16 D3:16 A2    A1

 LONG ReadPixelArray8(struct  rastport *, uword, uword, uword, uword,
       UBYTE *, struct rastport *);

FUNCTION
    For each pixel in a rectangular region, combine the bits from each
    of the bit-planes used to describe a particular rastport into the pen
    number selector which that bit combination normally forms for the
    system hardware selection of pixel color.

INPUTS
    rp    -  pointer to a rastport structure
    (xstart,ystart) - starting point in the rastport
    (xstop,ystop)   - stopping point in the rastport
    array -  pointer to an array of ubytes from which to fetch the pixel
             data allocate at least ((((width+15)>>4)<<4)*(ystop-ystart+1))
             bytes.
    temprp - temporary rastport (copy of rp with layer set == null,
             temporary memory allocated for
             temprp->BitMap with Rows set == 1,
             temprp->BytesPerRow == (((width+15)>>4)<<1),
             and temporary memory allocated for
             temprp->BitMap->Planes[])

RESULT
    For each pixel in the array:
        Pen - (0..255) number at that position is returned
      count - the number of pixels read.

NOTE
    xstop must be >= xstart
    ystop must be >= ystart

BUGS

SEE ALSO
    readpixel()  readpixelline8()  graphics/rastport.h