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w element, of the source register, 220, 221
warm air-cold air interface, of a road heated by the sun, 61-62
wave theory of light, advanced unintentionally by Poisson, 67
wavelength of light, index of refraction as a function of, 62
Web sites, on DirectX and shader programming, 144-145
well-formed vertex data, 128-129
white light, passing through a prism, 62, 63
world and view matrices, concatenating into a single matrix, 98-99
world coordinates
creating a light directional vector in, 159
getting to clip coordinates, 98
world/model transformations, consisting only of rotations and translations, 104
world transformation matrix, multiplying an object's vertices by, 98
write masks, 268-269
destination, 363-367
write only registers, 200
WVP (world-view-projection) matrix
creating a temporary matrix containing, 100
loading the concatenated, 100
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