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1. Z-BUFFER
ROLL NO 221-230
ALGORITHM

2. CONTENTS OF THE ALGORITHM
There’s what you’ll find in this ‘ALGORITHM’
1. UNDERSTANDING THE Z-BUFFER ALGORITHM.
2. OVERVIEW OF THE Z-BUFFER ALGORITHM
3. HOW THE ALGORITHM WORKS
4. ADVANTAGES & DISADVANTAGES
5. APPLICATIONS

3. Understanding the Z-Buffer Algorithm.
This presentation will provide an overview
of the Z-buffer algorithm, a popular
algorithm used in computer graphics for
rendering 3D scenes in real-time. It will
explore how the algorithm works, its
advantages and disadvantages, and how it
can be used in various applications.

4. Overview of the Algorithm
- Used to determine which
objects in a scene are visible
and which are hidden.
- Keeps track of the depth of
each pixel in the scene as it is
rendered.

5. How the Algorithm
Works?
Compares depth of new object to depth of
existing pixel in the buffer.
- If depth of new object is closer, it is drawn
and depth is updated.
- If depth of new object is further away, it is
hidden and not drawn.

6. ADVANTAGES
 Simple to implement and highly
efficient
 Any kind of opaque surface can be
handled/removed.
 Well-suited for real-time rendering
applications like video games.
 It displays complex surface
intersections easily.

7. DISADVANTAGES
 Can require a large amount of memory,
especially for high-resolution displays.
 It is a time-consuming process as it
needs to scan and convert every
polygon.
 Since depth storing is not done, a
location in the z-buffer may have to be
changed many times depending on
the number of surfaces representing
the scene.

8. Applications:
 The Z-buffer is a technology used in almost all contemporary computers,
laptops, and mobile phones for performing 3D computer graphics.
 Used in computer graphics for rendering 3D scenes in real-time.
 The primary use now is for video games, which require fast and accurate
processing of 3D scenes.
 The Z-buffer is implemented in hardware within consumer graphics
cards.

9. THANKYOU!