| 摘要 |
An apparatus and a method for processing 3D graphics lighting are provided to split and disperse lighting processing operations in order to optimize lighting operations, thereby making the operating speed four or more times faster. A pipelined lighting apparatus(200) includes a normalization unit(210), a spot and attenuation term calculating unit(220), a vector inner product unit(230), and a vertex color value calculating unit(240). The normalization unit receives vertex data, a lighting parameter and a normal vector to calculate a lighting vector, normalizes the lighting vector and the normal vector, and produces 2-path global ambient. The spot and attenuation term calculating unit calculates the sum of a previously designated vision vector and the normalized lighting vector and calculates a spot term and an attenuation term using the lighting parameter and the normalized lighting vector. The vector inner product unit produces a diffuse term and a first specular term. The vertex color value calculating unit calculates a second specular term using the first specular term and produces vertex color data using at least one of the 2-path global ambient, the spot term, the attenuation term, the diffuse term, and the second specular term. |
