Ray-tracing
2016-08-23
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Application background
Ray tracing is a method for displaying an object, which is proposed by Apple in 1968. Ray tracing method along the arrival point light anti direction tracking, after every pixel of the screen, find out intersect with the line of sight of object surface points P0, and continue to follow, find out influence points P0 intensity of light, and thus calculate the P0 point accurate light intensity, in the material editor is often used to mirror effect. Ray tracing or ray tracing is one of the core algorithms of computer graphics. In this algorithm, the light from the light source is ejected when they came through the surface and of their application all conform to the laws of physics and optical transform. In the end, the light enters the virtual camera negative, and the image is generated.Key Technology
For each pixel in the imageraytracing
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