Download PDF by Corsini, Massimiliano; Di Benedetto, Marco; Ganovelli,: Introduction to Computer Graphics: A Practical Learning

By Corsini, Massimiliano; Di Benedetto, Marco; Ganovelli, Fabio; Pattanaik, Sumanta

ISBN-10: 1439852790

ISBN-13: 9781439852798

ISBN-10: 1439852804

ISBN-13: 9781439852804

ISBN-10: 1482236338

ISBN-13: 9781482236330

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2 Color Space Since color is influenced by many objective and subjective factors, it is difficult to define a unique way to represent it. We have just stated that color is the result of the trichromatic nature of the HVS, hence the most natural way to represent a color is to define it as a combination of three primary colors. These primary colors are typically combined following two models: additive and subtractive. With the additive color model, the stimulus is generated by combining different stimuli of three individual colors.

2 The WebGL Rasterization-Based Pipeline The WebGL pipeline is the concrete graphics pipeline that we will use throughout this book. Before going into our first rendering example, we must have a big picture of how it works. 1 depicts the stages that compose the WebGL pipeline, and which are the entities they involve. , the graphics hardware or the software library) with the WebGL API. When drawing commands are issued, data starts to flow from graphics memory and gets consumed or transformed by each pipeline stage, which we will discuss in the following: Vertex Puller (VP).

Function to draw lens areas. . . . . . . . . . Rendering axis-aligned billboards with depth sort. . . . Depth of field implementation (JavaScript side). . . . Depth of field implementation (shader side). . . . . Code to compute the edge strength. . . . . . . . A simple quantized-diffuse model. . . . . . . . Fragment shader for the second pass. . . . . . . Storing the modelview matrix at the previous frame. .

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Introduction to Computer Graphics: A Practical Learning Approach by Corsini, Massimiliano; Di Benedetto, Marco; Ganovelli, Fabio; Pattanaik, Sumanta

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