Renders 1st test (triangle):  (3 points)

    Three points for rendering one triangle correctly.  This
tests
    that the edges were in fact set up and that you are
tracking the
    x values along the edges correctly.


Renders 2nd test (rgb triangle):  (2 points)

    Interpolates colors correctly.


Renders 3rd test (cube):  (2 points)

    Do you handle multiple polygons?  We also use this test to
check
    for sharp edges.


Renders 4th test (intersecting cubes):  (2 points)

    We were looking for interpolation of the inverse depth (h
= 1/z),
    and correct logic for testing the current depth value
against the
    depth buffer.  Interpolating eye-space z in image space
will give
    curved intersections in the 3rd test file.


Renders 5th test (ellipse):  (2 points)

    It is important that you use a consistent rule for
deciding when
    to begin tracking a span, and when to remove it.  It is
also
    important to use a consistent rule when deciding which
pixel a
    span should start and end on.  Adjacent polygons should
neither
    leave cracks between them, nor color the same pixel.


Renders 6th test (geekball):  (2 points)

    We tested your file on geekball.iv in the ixexamples
directory.


Exactitude:  (2 points)
   
    General category of how well you implemented the
assignment.