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 widely used technique in computer graphics for managing image depth information. It is essential for rendering three-dimensional scenes, ensuring that objects which are closer to the viewer obscure objects farther away, creating a realistic view of a scene. The Z-buffer algorithm works by keeping track of the depth of every pixel in the image and comparing the depth of incoming objects to determine which should be visible.

The basic idea behind the Z-buffer algorithm is that every pixel on the screen has a corresponding depth value, stored in a Z-buffer. This buffer stores the depth of the closest object ____ __________ _________ _______ _____.
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