| 摘要 |
An image generating apparatus and program capable of realistically displaying an image of a submerged land portion in consideration of water characteristics is provided. In rendering processing, when an object to be rendered is a water surface object, from color data (VR, VG, VB) of an object such as a land already written in the frame buffer, new color data (VR', VG', VB') is generated according to color parameters (alphar, alphag, alphab) predetermined based on the water characteristics. The color parameters are so determined that the ratio of reducing a red color component value VR becomes larger than the ratios of reducing a green color component value VG and a blue color component value VB (alphar<alphag, alphab). Then, by adding the color data (WR, WG, WB) of the water surface object and the new color data at a predetermined ratio with translucent processing, final color data (NR, NG, NB) is generated. Thus, an image realistically representing the submerged land portion can be generated.
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