Merits and demerits of z-buffer or depth buffer
Write down some of the merits and demerits of z-buffer or depth buffer.
Expert
The merits of z-buffer or depth buffer are as described below:
a) The z-buffer technique is simple to implement and it needs no sorting of surface in a scene.
b) The z-buffer algorithm which is an arbitrary number of objects can be handled since each object is processed one at a time.
c) Simple hardware implementation.
The demerits of z-buffer or depth buffer are as described below:
a) Doubles memory needs (at least) one for z-buffer and one for the refresh buffer.
b) Device dependent and memory intensive.
c) Spends time while rendering polygons which are not visible.
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