October 2014
Beginner
422 pages
10h 4m
English
book
Introduction to Computer Graphics
by Fabio Ganovelli, Massimiliano Corsini, Sumanta Pattanaik, Marco Di Benedetto
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Chapter 5
Turning Vertices into Pixels
In the previous chapters we learned the basic algorithms for turning a specification of a three-dimensional scene (vertices, polygons, etc.) into a picture on the screen. In the following sections we show the details of how a geometric primitive becomes a region of colored pixels and also several optimizations that are commonly used for making it an efficient operation.
5.1 Rasterization
Rasterization comes into play after the vertex positions are expressed in viewport space (see Section 4.6.4). Unlike all the previous reference systems (in order: object space, world space, view space, NDC) this one is discrete and we have to decide how many fragments belong to the primitive and which discrete coordinates ...
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