Write and discuss Z-Buffer algorithm with suitable example. What are the maximum number of objects that can be handled by the Z-buffer algorithm? What will happen if Z-buffer algorithm is used and it is found that two polygons have same Z-value?

The Z-buffer algorithm, also known as the depth-buffer algorithm, is a fundamental technique used in computer graphics for rendering 3D scenes. It aims to determine which objects or parts of objects are visible and should be displayed on the screen based on their depth or Z-coordinate.

The Z-buffer algorithm works by maintaining a Z-buffer, which is a two-dimensional array that stores the depth value (Z-coordinate) ____ ________ ____ ______ ________ _______ __________ ______.
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