Computer Graphics Programming I - FreeDesktop.Org

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Heightbased Fog (cont.) Store a look-up where the value at an elementn is:n∫ −∞ ydy To calculate the integral over y eyeto y point, simplycalculate table[y_point]-table[y_eye]● This kind of table is called a summed-area table,and it is incredibly useful!20-November-2007 © Copyright Ian D. Romanick 2007
Referenceshttp://developer.nvidia.com/object/shadows_transparency_fog.htmlhttp://mrl.nyu.edu/~perlin/experiments/ball/● Very cool example of what can be done with explicit fogcoordinates...by one of the legends of computer graphicshttp://mrl.nyu.edu/~perlin/experiments/gabor/● Some of the theory behind the above Java applet.Legakis, J. Fast multi-layer fog. In ACM SIGGRAPH 98Conference Abstracts and Applications (Orlando, Florida,United States, July 19 - 24, 1998). SIGGRAPH '98. ACM, NewYork, NY.● Great paper, but not available on-line. :(20-November-2007 © Copyright Ian D. Romanick 2007
Page 1 and 2: Computer Graphics Programming I Age
Page 3: Fog Parameters Fog has 4 main param
Page 6 and 7: Heightbased Fog Fog factor is giv
Page 10 and 11: Radial Fog GL_FRAGMENT_DEPTH based
Page 12 and 13: Blending Typically used for one of
Page 14 and 15: GL_EXT_blend_colorC srcF src C dst
Page 16 and 17: Blend Equation C dstC src× ×F src
Page 18 and 19: Referenceshttp://en.wikipedia.org/w
Page 20 and 21: Multipass Rendering Please...no 5
Page 22 and 23: Problems with Multipass Why do we
Page 24 and 25: Problems with Multipass Why do we
Page 26 and 27: Referenceshttp://www.bluesnews.com/
Page 28: Legal Statement This work represent

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