首页>
外国专利>
EXTENSION OF FAST PHONG SHADING TECHNIQUE FOR BUMP MAPPING
EXTENSION OF FAST PHONG SHADING TECHNIQUE FOR BUMP MAPPING
展开▼
机译:扩展了用于碰撞映射的快速Phong Shading技术
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for implementing bump mapping is provided that is fast enough to be used with real time interactive graphics products. Computationally expensive color values are precalculated for a sample of normal vector orientations as a function of orientation-dependent color variables, collected in a color map, and referenced through the color variables. The color variables are linearly related to angle coordinates that specify the normal vector orientations in a selected coordinate system. Angle coordinates are determined for the vertices of the polygons representing the object to be imaged. During rendering, the vertex angle coordinates are interpolated to provide pixel angle coordinates. Modified angle coordinates are generated by combining the angle coordinates with angle perturbations provided by a perturbation source, and converted to color variables. Color values referenced by the color variables are assigned to the corresponding pixels.
展开▼