NAME
    ReadPixelLine8 -- read the pen number value of a horizontal line
    of pixels starting at a specified x,y location and continuing
    right for count pixels. (V36)

SYNOPSIS
    count = ReadPixelLine8(rp,xstart,ystart,width,array,temprp)
    D0                     A0 D0:16  D1:16  D2    A2    A1

    LONG ReadPixelLine8(struct rastport *, 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
    (x,y)  - a point in the rastport
    width  - count of horizontal pixels to read
    array -  pointer to an array of UBYTEs from which to fetch the pixel
             data allocate at least (((width+15)>>4)<<4) 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
    width must be non negative

BUGS

SEE ALSO
    readpixel()  graphics/rastport.h