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ISRO | ISRO CS 2014 | Question 34

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How much memory is required to implement z-buffer algorithm for a 512 x 512 x 24 bit-plane image? (A) 768 KB (B) 1 MB (C) 1.5 MB (D) 2 MB

Answer: (C)

Explanation: Z-buffer, which is also known as the Depth-buffer method is one of the commonly used method for hidden surface detection. Z-buffer requires 2 type of buffers to be filled: Depth buffer and Frame buffer Space required by depth buffer = 512 x 512 x 24 = 6291456 bits. Space required by frame buffer = 512 x 512 x 24 = 6291456 bits. Total space required = 6291456 + 6291456 bits = 12582912 bits ≈ 1.5 MB

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Last Updated : 11 May, 2018
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