Table of Contents
- 1 How does the z-buffer algorithm determine which surface are hidden?
- 2 Which two buffers are associated with z-buffer algorithm while processing?
- 3 Which of the following is true about z-buffer algorithm?
- 4 What is z-buffer algorithm for hidden surface removal?
- 5 What is the drawback of z-buffer algorithm?
- 6 Which algorithm is required two different buffers?
- 7 What are the advantages and disadvantages of z-buffer method?
- 8 What is the difference between z-buffer and a buffer?
Z-buffer, which is also known as the Depth-buffer method is one of the commonly used method for hidden surface detection. It is an Image space method. Image space methods are based on the pixel to be drawn on 2D. For these methods, the running time complexity is the number of pixels times number of objects.
Which two buffers are associated with z-buffer algorithm while processing?
To override the closer polygons from the far ones, two buffers named frame buffer and depth buffer, are used. Depth buffer is used to store depth values for position, as surfaces are processed position, as surfaces are processed . The frame buffer is used to store the intensity value of color value at each position .
What does the z-buffer do?
A depth buffer, also known as a z-buffer, is a type of data buffer used in computer graphics to represent depth information of objects in 3D space from a particular perspective. Depth buffers are an aid to rendering a scene to ensure that the correct polygons properly occlude other polygons.
Which of the following is true about z-buffer algorithm?
Which of the following is true about z-buffer algorithm? Explanation: Option 1: False, as it is a depth buffer and not depth sort algorithm. Option 2: True, as the size of objects can be large. Option 3: False, as only the depth of object is compared and not the entire object.
The Z-Buffer Algorithm. A “z-buffer” is a 2D array of values equivalent in size to the color buffer that stores a rendered image. Each value in a z-buffer represents the distance between an object rendered at that pixel and the camera. Remember that the camera is always at the origin looking down the -Z axis.
Which of the following is a disadvantage of using z-buffer algorithm?
Advantages of z-buffer algorithm: It always works and is simple to implement. Disadvantages: May paint the same pixel several times and computing the color of a pixel may be expensive.
What is the drawback of z-buffer algorithm?
Advantages of z-buffer algorithm: It always works and is simple to implement. Disadvantages: May paint the same pixel several times and computing the color of a pixel may be expensive. So might compute the color only if it passes the z_buffer test.
Which algorithm is required two different buffers?
We have devised a new wait-free IPC mechanism that is less computationally complex than Chen’s algorithm. It, however, trades off time for space complexity, requiring approximately twice the buffer space. Hence, it is called the Double Buffer algorithm.
How many buffers are used for the z-buffer algorithm why are they used for?
Two buffers are required to implement this algorithm, the one for preserving the z-value and the second for preserving the intensity value of pixels. The buffer that stores the pixel’s intensity is known as Frame Buffer or Refresh Buffer, which is initially set to background intensity.
What are the advantages and disadvantages of z-buffer method?
What is the difference between z-buffer and a buffer?
Z buffer and A buffer are two of the most popular visible surface detection techniques. In fact, A buffer is an extension to Z buffer, which adds anti-aliasing. Typically, A buffer has a better image resolution than Z buffer, because it uses an easily computable Fourier window.
What is z-buffer algorithm for hidden-surface removal?